A high-pressure homogenizer and a booster pump thereof

Abstract

A booster pump and a high-pressure homogenizing device are disclosed, relating to the technical field of homogenization processing. The booster pump of the high-pressure homogenizing device includes: a pump body, a bushing, and a piston rod. The pump body has a cavity, the bushing is disposed within the pump body, and the bushing has a shaft hole communicating with the cavity. The piston rod is slidably mounted in the shaft hole. The bushing has at least one overflow prevention channel along its axial direction, the overflow prevention channel having a first end and a second end opposite to each other. Both the first end and the second end are located on the wall of the shaft hole and communicate with the shaft hole, with the second end located on the side of the first end away from the cavity. A first sealing ring is mounted inside the second end, and the first sealing ring is sleeved on the piston rod to seal the gap between the bushing and the piston rod, and to seal the second end, thereby restricting the material flowing into the overflow prevention channel from flowing out through the second end. When material enters the overflow prevention channel through the first end, it increases the pressure inside the overflow prevention channel. This pressure can cause the first sealing ring to press tightly against the piston rod, which is beneficial to improving the sealing effect.

Description

Technical Field

[0001] This application relates to the technical field of homogenization processing, specifically to a booster pump and a high-pressure homogenization device for a high-pressure homogenization apparatus. Background Technology

[0002] High-pressure homogenizers allow materials in suspension to flow at high speed through a cavity with a special internal structure (such as a homogenization cavity) under high pressure, causing a series of changes in the material's physical, chemical, and structural properties, ultimately achieving homogenization. For example, the high pressure can be provided by a booster pump, and the cavity with the special internal structure can be a narrow channel. Under high pressure, the material passes through the narrow channel and is processed by intense shearing, vibration, collision, cavitation effect, and jet propagation, causing changes in the material's physical, chemical, and structural properties. Ultimately, this can reduce the particle size to the nanometer scale, with a narrow distribution, accompanied by increased stability, uniformity, and transparency.

[0003] In high-pressure homogenizing devices, sealing rings can be installed inside the booster pump to prevent material leakage. However, during long-term use, unreliable sealing and material leakage still occur, leading to material waste. Summary of the Invention

[0004] This application provides a booster pump and a high-pressure homogenizing device, which can solve the problem of unreliable internal sealing of the booster pump.

[0005] According to one aspect of this application, one embodiment provides a booster pump for a high-pressure homogenizing device, comprising:

[0006] The pump body has a cavity, and a feed channel and a discharge channel communicating with the cavity;

[0007] A bushing is disposed in the pump body, and the bushing is sealed to the pump body. The bushing has a shaft hole that communicates with the cavity.

[0008] A piston rod, which is slidably fitted into the shaft hole;

[0009] The bushing is provided with at least one overflow prevention channel along its axial direction. The overflow prevention channel has a first end and a second end, both of which are located on the wall of the shaft hole and communicate with the shaft hole. The second end is located on the side of the first end away from the cavity. The second end has an annular groove structure. A first sealing ring is fitted inside the second end. The first sealing ring is sleeved on the piston rod to seal the gap between the bushing and the piston rod and to seal the second end, thereby restricting the material flowing into the overflow prevention channel from flowing out through the second end.

[0010] In one embodiment, the overflow prevention channel includes a first channel and a second channel arranged in parallel. The first channel and the second channel both extend radially along the bushing, and the second channel is located on the side of the first channel away from the cavity. The first end is located at the end of the first channel near the piston rod, and the second end is located at the end of the second channel near the piston rod. The end of the first channel away from the piston rod is connected to the end of the second channel away from the piston rod.

[0011] In one embodiment, the overflow channel further includes a third channel, which is disposed on the outer circumference of the bushing and is annular in shape extending circumferentially along the bushing; the bushing is provided with a plurality of first channels and a plurality of second channels circumferentially, the third channel is connected to each of the first channels and each of the second channels, and each of the second channels is connected to the second end.

[0012] In one embodiment, the first end has an annular groove structure extending circumferentially along the bushing, and each of the first flow channels is connected to the first end.

[0013] In one embodiment, the bushing is provided with a first circulation channel located on the side of the anti-overflow channel away from the cavity, the pump body is provided with a second circulation channel, one end of the second circulation channel is connected to the first circulation channel, the other end of the second circulation channel is connected to the feed channel, and a one-way valve is provided between the second circulation channel and the feed channel so that the material in the second circulation channel can flow to the feed channel.

[0014] In one embodiment, the booster pump further includes a flow sensor for detecting material leakage in the second circulation channel, and the flow sensor is electrically connected to the controller of the high-pressure homogenizer.

[0015] In one embodiment, the feeding channel includes a first feeding section, a second feeding section, and a circulation section that are connected to each other. One end of the second feeding section is connected to the first feeding section and the circulation section, and the other end of the second feeding section is connected to the cavity through a one-way valve. The first feeding section extends radially and is used to connect to a material supply component. The circulation section is connected to the second circulation channel through a one-way valve.

[0016] In one embodiment, the wall of the shaft hole is provided with an annular groove, and a cavity sleeve is assembled in the annular groove. The cavity sleeve is sleeved on the piston rod, and part of the first circulation channel is located in the cavity sleeve, while the other part is located on the shaft sleeve.

[0017] In one embodiment, the cavity sleeve, the second sealing ring, the clamping ring, and the cooling body are sequentially installed axially within the annular groove. The clamping ring presses the second sealing ring against one side of the cavity sleeve to seal the second sealing ring between the bushing and the piston rod. The cooling body is provided with cooling water channels. The pump body includes a main body and an end cap fixed to one end of the main body. The end cap confines the cavity sleeve, the second sealing ring, the clamping ring, and the cooling body within the annular groove.

[0018] According to another aspect of this application, one embodiment provides a high-pressure homogenizing device, comprising:

[0019] Homogenizing component, having a homogenizing chamber, used to homogenize materials;

[0020] The booster pump of the high-pressure homogenizing device described above, wherein the discharge channel is connected to the homogenizing chamber; and

[0021] A drive unit, which is connected to the piston rod to drive the piston rod to reciprocate.

[0022] According to the above embodiments, the booster pump and high-pressure homogenizing device of the high-pressure homogenizing device are provided in the pump body. The shaft sleeve is provided with at least one anti-overflow channel along its axial direction. The anti-overflow channel has a first end and a second end opposite to each other. The first end and the second end are both located on the hole wall of the shaft hole and communicate with the shaft hole. The second end is located on the side of the first end away from the discharge channel. The second end has an annular groove structure. A first sealing ring is assembled in the second end. The first sealing ring is sleeved on the piston rod to seal the gap between the shaft sleeve and the piston rod and to seal the second end, so as to restrict the material flowing into the anti-overflow channel from flowing out through the second end. When material leaks from the cavity into the gap between the bushing and the piston rod, the leaked material will first flow to the first end of the overflow channel and then into the overflow channel. Because the first sealing ring restricts the material in the overflow channel from flowing out through the second end, the second end cannot release pressure. Therefore, the material entering the overflow channel will increase the pressure in the overflow channel. This pressure will act on the first sealing ring, making the first sealing ring press tightly against the piston rod, which helps to improve the sealing effect, prevent material leakage, and improve the utilization rate of the material. Attached Figure Description

[0023] Figure 1 This is a cross-sectional schematic diagram of the booster pump of a high-pressure homogenizing device according to one embodiment;

[0024] Figure 2 As one embodiment Figure 1 Enlarged view of A;

[0025] Figure 3 This is a schematic diagram of the structure of a bushing according to one embodiment;

[0026] Figure 4 As one embodiment Figure 3 A schematic diagram of the BB cross-sectional structure;

[0027] Figure 5 As one embodiment Figure 3 Schematic diagram of CC cross-section structure;

[0028] Figure 6 This is a schematic diagram of the cavity sleeve in one embodiment;

[0029] Figure 7 This is a schematic diagram of the structure of a high-pressure homogenizing device according to one embodiment.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1-Pump body; 101-Feed channel; 1011-First feed section; 1012-Circulation section; 102-Discharge channel; 103-Cavity; 104-End cover; 2-Shaft sleeve; 201-Overflow prevention channel; 2011-First end; 2012-First flow channel; 2013-Third flow channel; 2014-Second flow channel; 2015-Second end; 202-Shaft hole; 3-Piston rod; 4-First circulation flow channel; 5-Second circulation flow channel; 6-One-way valve; 7-Cavity sleeve; 701-Outer annular flow channel; 702-Inner annular flow channel; 8-Second sealing ring; 9-Pressure ring; 10-Cooling body; 11-First sealing ring; 111-Groove; 12-Flow sensor; 13-Booster pump; 14-Homogenizing component; 15-Heat exchanger; 16-Pressure sensor; 17-Drive component. Detailed Implementation

[0032] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0033] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0034] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0035] In related technologies, high-pressure homogenizers are usually provided with high pressure by a booster pump. In order to prevent material leakage in the booster pump, a sealing ring can be installed in the booster pump. However, during long-term use, there are still cases of unreliable sealing and material leakage, which leads to material waste.

[0036] This application includes a bushing inside the pump body, with at least one overflow prevention channel along its axial direction. The overflow prevention channel has a first end and a second end, both of which are located on the wall of the shaft hole and communicate with it. The second end is located on the side of the first end away from the discharge channel, and has an annular groove structure. A first sealing ring is fitted inside the second end and is sleeved on the piston rod. When material in the cavity leaks into the gap between the bushing and the piston rod, the leaked material first flows to the first end of the overflow prevention channel and then into the overflow prevention channel. Because the first sealing ring restricts the material in the overflow prevention channel from flowing out through the second end, the second end cannot release pressure. Therefore, the material entering the overflow prevention channel increases the pressure inside the channel. This pressure acts on the first sealing ring, causing it to press tightly against the piston rod, which helps to improve the sealing effect, prevent material leakage, and improve material utilization.

[0037] The following describes some embodiments of the booster pump and high-pressure homogenizing device provided in this application, with reference to the accompanying drawings.

[0038] Please see Figures 1 to 7 This application provides a booster pump 13 for a high-pressure homogenizing device, including a pump body 1, a bushing 2, a piston rod 3, and other functional components as needed, which are described in detail below.

[0039] like Figures 1-6As shown, in this embodiment, the pump body 1 has a cavity 103, and a feed channel 101 and a discharge channel 102 communicating with the cavity 103. A bushing 2 is disposed inside the pump body 1, and the bushing 2 is sealed to the pump body 1. The bushing 2 has a shaft hole 202, which communicates with the cavity 103. The piston rod 3 is slidably mounted in the shaft hole 202.

[0040] It is understood that the feed channel 101 of the pump body 1 can be connected to the material supply component (not shown in the figure) of the homogenizing device, such as a hopper or material container. The material in this application can be from the fields of food, cosmetics, pharmaceuticals, and chemicals. One-way valves can be installed at both the feed channel 101 and the discharge channel 102 in this application to control the unidirectional flow of the material. The one-way valves at the feed channel 101 and the discharge channel 102 can be located inside the pump body 1, integrating the one-way valves controlling the material flow into the booster pump 13, which helps to reduce the overall volume of the homogenizing device; alternatively, the one-way valves can also be located on the pipes connecting the feed channel 101 and the discharge channel 102. This application does not limit the specific structure of the one-way valves; any structure that enables unidirectional flow control is acceptable. The discharge channel 102 in this application can be connected to the homogenizing component 14 of the homogenizing device. In this application, the bushing 2 is fixed inside the pump body 1. To prevent material leakage from the gap between the bushing 2 and the pump body 1, a layer of adhesive can be sintered between the bushing 2 and the pump body 1 at high temperature to improve the sealing performance. The piston rod 3 is slidably mounted in the shaft hole 202. When the piston rod 3 is pulled away from the discharge channel 102, the pressure in the cavity 103 decreases, the one-way valve at the feed channel 101 opens, and the one-way valve at the discharge channel 102 closes, allowing material to enter the cavity 103 through the feed channel 101. When the piston rod 3 is pushed closer to the discharge channel 102, the pressure in the cavity 103 increases, the one-way valve at the feed channel 101 closes, and the one-way valve at the discharge channel 102 opens, allowing material to be pressed into the homogenizing component 14 through the discharge channel 102.

[0041] In some implementations, such as Figure 1 As shown, the pump body 1 may be provided with an assembly hole. The discharge channel 102 and the assembly hole are located at opposite ends of the cavity 103, and the assembly hole extends through to the outer wall of the pump body 1. During assembly, the bushing 2 can be inserted through the orifice near the outer wall of the pump body 1, which simplifies the assembly of the bushing 2. In some embodiments, the cavity 103 may be cylindrical, and the assembly hole and bushing 2 may also be cylindrical. In this embodiment, the discharge channel 102 may be located on one side of the cavity 103, and the bushing 2 may be located on the opposite side of the cavity 103. The movement direction of the piston rod 3 may be parallel to the discharge direction.

[0042] In this embodiment, as Figures 1-5As shown, the bushing 2 is provided with at least one overflow channel 201 along its axial direction. The overflow channel 201 has a first end 2011 and a second end 2015. The first end 2011 and the second end 2015 are both located on the wall of the shaft hole 202 and communicate with the shaft hole 202. The second end 2015 is located on the side of the first end 2011 away from the cavity 103. The second end 2015 has an annular groove structure. A first sealing ring 11 is assembled in the second end 2015. The first sealing ring 11 is sleeved on the piston rod 3 to seal the gap between the bushing 2 and the piston rod 3 and to seal the second end 2015, so as to restrict the material flowing into the overflow channel 201 from flowing out through the second end 2015.

[0043] It is understood that the axial direction of the bushing 2 is the direction of the extension of the shaft axis of the bushing 2, and there may be one, two, three or more overflow channels 201 distributed along its axial direction. When there are multiple overflow channels 201, the overflow channels 201 can be evenly spaced along the axial direction. The first sealing ring 11 can restrict the material flowing into the overflow channel 201 from flowing out through the second end 2015, that is, the second end 2015 of the overflow channel 201 is closed. If the pressure in the overflow channel 201 increases, the pressure will not be relieved from the second end 2015. The first end 2011 of the overflow channel 201 is closer to the cavity 103 than the second end 2015. When the material overflows from the cavity 103 into the gap between the bushing 2 and the piston rod 3, it will first reach the first end 2011 of the overflow channel 201 and flow into the overflow channel 201 through the first end 2011. Material entering the overflow channel 201 increases the pressure within it. This pressure acts on the first sealing ring 11, applying a thrust close to the piston rod 3 to its outer circumference, causing the first sealing ring 11 to press tightly against the piston rod 3. Furthermore, as the piston rod 3 moves, the pressure within the cavity 103 increases, further increasing the pressure within the overflow channel 201. This also ensures the first sealing ring 11 remains firmly pressed against the piston rod 3, improving the sealing effect. Even if the overflow channel 201 overflows during long-term use, the material within it will directly act on the first sealing ring 11 as the pressure within the cavity 103 increases, maintaining a good sealing effect. Furthermore, when multiple overflow channels 201 are provided, if material leaks from the first sealing ring 11 of the first overflow channel 201, the second overflow channel 201 can further block the leaked material. Thus, through multiple layers of blocking (e.g., three layers), the difficulty of material leakage is significantly increased, thereby improving sealing reliability and helping to avoid frequent replacement of sealing rings during long-term use, thus improving production efficiency. This embodiment does not impose specific limitations on the specific shape of the overflow channel 201; material can enter the overflow channel 201 from the first end 2011.

[0044] In some implementations, such as Figure 1 , Figure 2As shown, in order to restrict the material flowing into the overflow channel 201 from flowing out through the second end 2015, the two opposite end faces of the first sealing ring 11 can be pressed against the groove sidewall of the second end 2015 with interference fit. The outer circular surface of the first sealing ring 11 can still serve as the force-bearing object, and the inner circular surface of the first sealing ring 11 is attached to the outer circumference of the piston rod 3. Furthermore, in order to improve the sealing effect, an annular groove 111 can be provided on the outer circular surface of the first sealing ring 11. When the first sealing ring 11 is subjected to pressure, the pressure will act on the surface of the groove 111, which not only has a radial thrust to bring the first sealing ring 11 closer to the piston rod 3, but also an axial thrust to make the part of the first sealing ring 11 located on both sides of the groove 111 move closer to the groove sidewall of the second end 2015. The two opposite end faces of the first sealing ring 11 can also be pressed tightly against the groove sidewall of the second end 2015, which is conducive to maintaining the stability of the closed environment of the second end 2015.

[0045] The booster pump 13 of the high-pressure homogenizing device provided in this embodiment has a bushing 2 inside the pump body 1. The bushing 2 has at least one overflow prevention channel 201 along its axial direction. The overflow prevention channel 201 has a first end 2011 and a second end 2015. The first end 2011 and the second end 2015 are both located in the hole wall of the shaft hole 202 and communicate with the shaft hole 202. The second end 2015 is located on the side of the first end 2011 away from the discharge channel 102. The second end 2015 has an annular groove structure. A first sealing ring 11 is installed in the second end 2015. The first sealing ring 11 is sleeved on the piston rod 3 to seal the gap between the bushing 2 and the piston rod 3 and to seal the second end 2015, so as to restrict the material flowing into the overflow prevention channel 201 from flowing out through the second end 2015. When the material in cavity 103 leaks into the gap between bushing 2 and piston rod 3, the leaked material will first flow to the first end 2011 of overflow channel 201 and then into overflow channel 201. Because the first sealing ring 11 restricts the material in overflow channel 201 from flowing out through the second end 2015, the second end 2015 cannot release pressure. Therefore, the material entering overflow channel 201 will increase the pressure in overflow channel 201. This pressure will act on the first sealing ring 11, making the first sealing ring 11 press tightly against piston rod 3, which is beneficial to improve the sealing effect, prevent material leakage, and improve material utilization.

[0046] In one embodiment, such as Figure 1 , Figure 2As shown, the overflow prevention channel 201 includes a first flow channel 2012 and a second flow channel 2014 arranged in parallel. Both the first flow channel 2012 and the second flow channel 2014 extend radially along the bushing 2, and the second flow channel 2014 is located on the side of the first flow channel 2012 away from the cavity 103. The first end 2011 is located at the end of the first flow channel 2012 near the piston rod 3, and the second end 2015 is located at the end of the second flow channel 2014 near the piston rod 3. The end of the first flow channel 2012 away from the piston rod 3 is connected to the end of the second flow channel 2014 away from the piston rod 3. In this embodiment, the first flow channel 2012 and the second flow channel 2014 both extend radially along the bushing 2, which helps to reduce the processing difficulty of the overflow prevention channel 201 and also helps to extend the length and volume of the overflow prevention channel 201.

[0047] Furthermore, such as Figures 1-5 As shown, the overflow channel 201 may further include a third flow channel 2013. The third flow channel 2013 is located on the outer circumference of the bushing 2 and is annular, extending circumferentially along the bushing 2. The bushing 2 is provided with a plurality of first flow channels 2012 and a plurality of second flow channels 2014 circumferentially. The third flow channel 2013 communicates with each of the first flow channels 2012 and each of the second flow channels 2014, and each of the second flow channels 2014 is connected to the second end 2015. In this embodiment, the third flow channel 2013 is located on the outer circumference of the bushing 2, which is convenient to process. Moreover, the annular third flow channel 2013 connects the first flow channels 2012 and the second flow channels 2014, which helps to simplify the structure of the overflow channel 201. In some embodiments, an annular groove may be provided on the outer periphery of the bushing 2. After the bushing 2 is assembled into the pump body 1, the bushing 2 and the pump body 1 together can form a third flow channel 2013. The bushing 2 and the pump body 1 are sealed to maintain the pressure in the overflow channel 201. In some embodiments, each first flow channel 2012 may be connected to the corresponding second flow channel 2014. That is, the overflow channel 201 may include an axially extending fourth flow channel. The number and position of the fourth flow channel correspond one-to-one with the first flow channel 2012 and the second flow channel 2014. Each first flow channel 2012 is connected to the corresponding second flow channel 2014 through the corresponding fourth flow channel. In this case, because the second end 2015 has an annular groove structure, when the pressure in the overflow channel 201 increases, the pressure of the corresponding second end 2015 will also increase, and a force can still be applied to the outer surface of the first sealing ring 11.

[0048] In one embodiment, such as Figure 3 , Figure 4 As shown, the first end 2011 has an annular groove structure extending circumferentially along the bushing 2, and each first flow channel 2012 is connected to the first end 2011. The annular groove structure of the first end 2011 ensures that all material overflowing between the bushing 2 and the piston rod 3 is contained by the first end 2011, which helps to improve the blocking effect of the overflow channel 201 on the material.

[0049] In one embodiment, such as Figure 1 As shown, the bushing 2 is provided with a first circulation channel 4, which is located on the side of the overflow channel 201 away from the cavity 103. The pump body 1 is provided with a second circulation channel 5, one end of which is connected to the first circulation channel 4, and the other end of which is connected to the feed channel 101. A one-way valve 6 is provided between the second circulation channel 5 and the feed channel 101 to allow the material in the second circulation channel 5 to flow to the feed channel 101. This enables the recovery of leaked material and provides automatic recovery through internal circulation, preventing external leakage and improving the sealing effect. If there is still leakage after the material passes through the overflow channel 201, it will flow into the first circulation channel 4 and the second circulation channel 5. After accumulating in the circulation channels, pressure will be generated to push open the one-way valve 6 between the feed channel 101 and the second circulation channel 5, thereby guiding the material in the circulation channels to the feed channel 101 for reuse. It is understandable that when the piston rod 3 is sucking up material, the one-way valve between the feed channel 101 and the cavity 103 opens, but it does not open the one-way valve 6 between the circulation channel and the feed channel 101. This is because the circulation channel is a closed space, while the feed channel 101 is not closed. When the one-way valve 6 between the circulation channel and the feed channel 101 is not pushed open, the negative pressure formed in the cavity 103 will only cause the material at the feed channel 101 to flow into the cavity 103.

[0050] In one embodiment, the booster pump 13 further includes a flow sensor 12, which is used to detect the amount of material leakage in the second circulation channel 5. The flow sensor 12 is electrically connected to the controller of the high-pressure homogenizer. By detecting the amount of material leakage in the second circulation channel 5 through the flow sensor 12 and feeding it back to the controller, the controller compares it with the user's set value. If the leakage exceeds the set value, the homogenizer can provide a corresponding prompt to remind the user to replace the sealing ring, which is beneficial to the stable operation of the booster pump 13.

[0051] In one embodiment, such as Figure 1As shown, the feeding channel 101 includes a first feeding section 1011, a second feeding section 1013, and a circulation section 1012 that are connected to each other. One end of the second feeding section 1013 is connected to the first feeding section 1011 and the circulation section 1012, and the other end of the second feeding section 1013 is connected to the cavity 103 through a one-way valve. The first feeding section 1011 extends radially and is used to connect to the material supply component. The circulation section 1012 is connected to the second circulation channel 5 through a one-way valve. The first feeding section 1011 facilitates the connection between the feeding channel 101 and the material supply component, and the circulation section 1012 facilitates the connection between the circulation channel and the feeding channel 101. The first feeding section 1011 extends radially, while the circulation section 1012 and the second feeding section 1013 can extend axially and can be arranged on the same straight line, which helps to simplify the processing of the feeding channel 101.

[0052] In one embodiment, such as Figure 1 , Figure 6 As shown, the wall of the shaft hole 202 is provided with an annular groove, and a cavity sleeve 7 is fitted inside the annular groove. The cavity sleeve 7 is fitted onto the piston rod 3. Part of the first circulation channel 4 is located inside the cavity sleeve 7, and the other part is located on the shaft sleeve 2. Providing the cavity sleeve 7 inside the shaft hole 202, and having part of the first circulation channel 4 located inside the cavity sleeve 7, facilitates subsequent maintenance and replacement, and helps reduce maintenance costs. In some embodiments, such as... Figure 6 As shown, the first circulation channel 4 may include an inner annular channel 702 and an outer annular channel 701. The inner annular channel 702 is located on the inner hole side of the cavity sleeve 7, and the outer annular channel 701 is located on the outer circumference of the cavity sleeve 7. The inner annular channel 702 and the outer annular channel 701 can be connected by multiple radially extending channels.

[0053] In one embodiment, such as Figure 1 As shown, a cavity sleeve 7, a second sealing ring 8, a clamping ring 9, and a cooling body 10 are sequentially installed axially within the annular groove. The clamping ring 9 presses the second sealing ring 8 against one side of the cavity sleeve 7, thereby sealing the second sealing ring 8 between the bushing 2 and the piston rod 3. The cooling body 10 is provided with cooling water channels. The pump body 1 includes a main body and an end cap 104 fixed to one end of the main body. The end cap 104 confines the cavity sleeve 7, the second sealing ring 8, the clamping ring 9, and the cooling body 10 within the annular groove. The clamping ring 9 presses the second sealing ring 8 against one side of the cavity sleeve 7, which can further improve the sealing effect. Cooling water can flow through the cooling water channels in the cooling body 10. The pump body 1 includes a main body and an end cap 104, which facilitates the installation of components in the annular groove. In some embodiments, the end cap 104 can be fixed to the end of the main body by means of screw connection, and the end cap 104 may be provided with a through hole for the piston rod 3 to be inserted into the shaft hole 202.

[0054] The booster pump 13 of the high-pressure homogenizing device provided in the above embodiment has a bushing 2 inside the pump body 1. The bushing 2 has at least one overflow prevention channel 201 along its axial direction. The overflow prevention channel 201 has a first end 2011 and a second end 2015. The first end 2011 and the second end 2015 are both located in the hole wall of the shaft hole 202 and communicate with the shaft hole 202. The second end 2015 is located on the side of the first end 2011 away from the discharge channel 102. The second end 2015 has an annular groove structure. A first sealing ring 11 is assembled in the second end 2015. The first sealing ring 11 is sleeved on the piston rod 3 to seal the gap between the bushing 2 and the piston rod 3 and to seal the second end 2015, so as to restrict the material flowing into the overflow prevention channel 201 from flowing out through the second end 2015. When the material in cavity 103 leaks into the gap between bushing 2 and piston rod 3, the leaked material will first flow to the first end 2011 of overflow channel 201 and then into overflow channel 201. Because the first sealing ring 11 restricts the material in overflow channel 201 from flowing out through the second end 2015, the second end 2015 cannot release pressure. Therefore, the material entering overflow channel 201 will increase the pressure in overflow channel 201. This pressure will act on the first sealing ring 11, making the first sealing ring 11 press tightly against piston rod 3, which is beneficial to improve the sealing effect, prevent material leakage, and improve material utilization.

[0055] Please see Figures 1-7 This application also provides a high-pressure homogenizing device, including: a homogenizing component 14 having a homogenizing chamber for homogenizing materials; a booster pump 13 of the high-pressure homogenizing device as described above, with a discharge channel 102 communicating with the homogenizing chamber; and a driving component 17 for connecting to a piston rod 3 to drive the piston rod 3 to reciprocate.

[0056] It is understood that the booster pump 13 of the high-pressure homogenizing device in this embodiment is the same as that in the above embodiment, and will not be described again here. The homogenizing component 14 and the booster pump 13 can be connected by a pipe. The piston rod 3 pushes into the cavity 103, and the material is squeezed out of the discharge channel 102 and enters the homogenizing chamber in the homogenizing component 14. The homogenizing chamber has a specific structure. Under the high pressure generated by the booster pump 13, a high-speed micro-jet will be formed in the homogenizing chamber. The structure of the homogenizing chamber allows the material to undergo physical, chemical, and structural changes after undergoing intense shearing, vibration, collision, cavitation effect, and jet propagation, ultimately achieving a homogenization effect such as reducing the particle size to nanoscale particles and increasing stability, uniformity, and transparency. This application does not limit the specific structure of the homogenizing chamber, as long as it can achieve the homogenization effect. The driving component 17 in this application can be a motor. The motor drives the piston rod 3 to reciprocate in the booster pump 13 after passing through a reduction gearbox.

[0057] In some embodiments, the high-pressure homogenizer may further include a controller (not shown in the figure), and a pressure sensor 16 may be provided between the booster pump 13 and the homogenizing component 14. The pressure sensor 16 and the aforementioned flow sensor 12 may both be electrically connected to the controller. The pressure sensor 16 is used to detect the pressure of the discharge material and can send it to the controller. The controller compares it with the target pressure and displays the result on the touch screen. In some embodiments, the high-pressure homogenizer may further include a heat exchanger 15, and the material flowing out of the homogenizing component 14 can flow into the heat exchanger 15, thereby realizing the recovery and utilization of heat in the material, improving energy utilization efficiency, and also reducing the temperature of the outflowing material.

[0058] The high-pressure homogenizing device provided in the above embodiment has a bushing 2 inside the pump body 1. The bushing 2 has at least one overflow prevention channel 201 along its axial direction. The overflow prevention channel 201 has a first end 2011 and a second end 2015. The first end 2011 and the second end 2015 are both located in the hole wall of the shaft hole 202 and communicate with the shaft hole 202. The second end 2015 is located on the side of the first end 2011 away from the discharge channel 102. The second end 2015 has an annular groove structure. A first sealing ring 11 is installed in the second end 2015. The first sealing ring 11 is sleeved on the piston rod 3 to seal the gap between the bushing 2 and the piston rod 3 and to seal the second end 2015, so as to restrict the material flowing into the overflow prevention channel 201 from flowing out through the second end 2015. When the material in cavity 103 leaks into the gap between bushing 2 and piston rod 3, the leaked material will first flow to the first end 2011 of overflow channel 201 and then into overflow channel 201. Because the first sealing ring 11 restricts the material in overflow channel 201 from flowing out through the second end 2015, the second end 2015 cannot release pressure. Therefore, the material entering overflow channel 201 will increase the pressure in overflow channel 201. This pressure will act on the first sealing ring 11, making the first sealing ring 11 press tightly against piston rod 3, which is beneficial to improve the sealing effect, prevent material leakage, and improve material utilization.

[0059] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A booster pump for a high-pressure homogenizing device, characterized in that, include: The pump body has a cavity, and a feed channel and a discharge channel communicating with the cavity; A bushing is disposed in the pump body, and the bushing is sealed to the pump body. The bushing has a shaft hole that communicates with the cavity. A piston rod, which is slidably fitted into the shaft hole; The bushing is provided with at least one overflow prevention channel along its axial direction. The overflow prevention channel has a first end and a second end, both of which are located on the wall of the shaft hole and communicate with the shaft hole. The second end is located on the side of the first end away from the cavity. The second end has an annular groove structure. A first sealing ring is fitted inside the second end. The first sealing ring is sleeved on the piston rod to seal the gap between the bushing and the piston rod and to seal the second end, thereby restricting the material flowing into the overflow prevention channel from flowing out through the second end.

2. The booster pump of the high-pressure homogenizing device as described in claim 1, characterized in that, The overflow prevention channel includes a first channel and a second channel arranged in parallel. Both the first channel and the second channel extend radially along the bushing, and the second channel is located on the side of the first channel away from the cavity. The first end is located at the end of the first channel near the piston rod, and the second end is located at the end of the second channel near the piston rod. The end of the first channel away from the piston rod is connected to the end of the second channel away from the piston rod.

3. The booster pump of the high-pressure homogenizing device as described in claim 2, characterized in that, The overflow prevention channel also includes a third channel, which is located on the outer circumference of the bushing and is annular, extending circumferentially along the bushing. The bushing is provided with a plurality of first channels and a plurality of second channels along the circumferential direction. The third channel is connected to each of the first channels and each of the second channels, and each of the second channels is connected to the second end.

4. The booster pump of the high-pressure homogenizing device as described in claim 3, characterized in that, The first end has an annular groove structure extending circumferentially along the bushing, and each of the first flow channels is connected to the first end.

5. The booster pump of the high-pressure homogenizing device as described in any one of claims 1-4, characterized in that, The bushing is provided with a first circulation channel, which is located on the side of the anti-overflow channel away from the cavity. The pump body is provided with a second circulation channel, one end of which is connected to the first circulation channel and the other end of which is connected to the feed channel. A one-way valve is provided between the second circulation channel and the feed channel so that the material in the second circulation channel can flow to the feed channel.

6. The booster pump of the high-pressure homogenizing device as described in claim 5, characterized in that, The booster pump also includes a flow sensor, which is used to detect the amount of material leakage in the second circulation channel and is electrically connected to the controller of the high-pressure homogenizer.

7. The booster pump of the high-pressure homogenizing device as described in claim 5, characterized in that, The feeding channel includes a first feeding section, a second feeding section, and a circulation section that are connected to each other. One end of the second feeding section is connected to the first feeding section and the circulation section, and the other end of the second feeding section is connected to the cavity through a one-way valve. The first feeding section extends radially and is used to connect to the material supply component. The circulation section is connected to the second circulation channel through a one-way valve.

8. The booster pump of the high-pressure homogenizing device as described in claim 5, characterized in that, The hole wall of the shaft hole is provided with an annular groove, and a cavity sleeve is assembled in the annular groove. The cavity sleeve is sleeved on the piston rod. Part of the first circulation channel is located in the cavity sleeve, and the other part is located on the shaft sleeve.

9. The booster pump of the high-pressure homogenizing device as described in claim 8, characterized in that, The cavity sleeve, the second sealing ring, the clamping ring, and the cooling body are sequentially installed axially within the annular groove. The clamping ring presses the second sealing ring against one side of the cavity sleeve to seal the second sealing ring between the bushing and the piston rod. The cooling body is provided with cooling water channels. The pump body includes a main body and an end cap fixed to one end of the main body. The end cap confines the cavity sleeve, the second sealing ring, the clamping ring, and the cooling body within the annular groove.

10. A high-pressure homogenizing device, characterized in that, include: Homogenizing component, having a homogenizing chamber, used to homogenize materials; The booster pump of the high-pressure homogenizing apparatus as described in any one of claims 1-9, wherein the discharge channel is connected to the homogenizing chamber; and A drive unit, which is connected to the piston rod to drive the piston rod to reciprocate.

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