Dispenser and dispensing device
By designing a distributor including fixed columns, hubs, blades and elastic support, the problem that the existing distribution device cannot effectively mix and evenly distribute the gas-liquid two-phase mixed fluid medium, the full mixing and uniform distribution of the fluid medium is achieved, and the efficiency of fluid treatment is improved.
Patent Information
- Application Number
- CN202110073529.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-01-20
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2041-01-20
AI Technical Summary
The existing distribution devices cannot effectively mix and evenly distribute the fluid medium mixed with gas and liquid phases, resulting in the accumulation of gas or liquid phases in the outlet cavity, affecting subsequent processing.
A distributor is designed, including fixed columns, hubs, blades and elastic support. Through the rotation of the hub and the drive of the blades, the mixing and uniform distribution of the fluid medium is achieved. Wire grooves and blades are provided on the hub. When the blades impact, the hub will rotate. The wire grooves divide the hub plates for bending and rotating.
Through the rotation and design of the distributor, the full mixing and uniform distribution of the gas-liquid mixed fluid is achieved, which solves the problem of fluid media aggregation in the outlet cavity and improves the efficiency of fluid treatment.
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Figure CN114849518B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of heat exchange technology, and in particular to a distributor and a distribution device. Background Art
[0002] Conventional distribution devices usually have a distribution plate with multiple through holes between the inlet cavity and the outlet cavity, so that the fluid medium entering from the inlet cavity is distributed to different outlet cavities through the distribution holes on the distribution plate. However, the medium distributed by the existing distribution device is often a gas-liquid two-phase mixed fluid medium. Since the distribution device does not have a mixing function, there is usually a cluster or a bundle of fluid media in the gas phase or liquid phase flowing into the same outlet cavity, which is not conducive to the subsequent treatment of the fluid medium. Summary of the invention
[0003] In view of this, it is necessary to provide an improved distributor, which is arranged between the inlet chamber and the outlet chamber. Through the rotation of the distributor, the mixed fluid entering the distributor can be fully mixed and evenly distributed to different outlet chambers through the distribution device.
[0004] The present invention provides a distributor, including a fixed column, a wheel hub and a first clamping ring. The fixed column has a first end and a second end arranged opposite to each other. The wheel hub is sleeved on the first end of the fixed column and is clamped to the fixed column through the first clamping ring. The wheel hub can rotate.
[0005] In this way, by arranging the distributor, the fluid entering the distributor drives the distributor to rotate, mix the fluid, and evenly distribute the fluid.
[0006] In order to make the gas-liquid mixed fluid medium evenly mixed through the distributor and evenly flow to each outlet cavity, the hub spacer ring is provided with a plurality of wire grooves along the radial direction of the hub, and the plurality of wire grooves divide the hub into a plurality of hub slices, and the hub slices can be bent toward the second end of the fixing column.
[0007] In this arrangement, by arranging the wire groove on the wheel hub and forming a gap between the wheel hub and the inner wall of the transition cavity, the gas-liquid mixed fluid medium is evenly mixed through the distributor and can flow evenly to each outlet cavity.
[0008] In order to facilitate the rotation of the wheel hub, the wire groove extends from a position relatively close to the middle of the wheel hub to the outer periphery of the wheel hub, and the wire groove is in a spiral line shape.
[0009] Such arrangement makes it easier to bend and rotate the wheel hub by extending the wire groove from the middle of the wheel hub to the outer periphery of the wheel hub.
[0010] In order to drive the distributor to rotate, the distributor further includes a blade, and the blade is arranged at the first end of the hub relatively close to the fixing column.
[0011] In this way, by arranging blades on the hub, when the fluid medium impacts the blades, the hub can be driven to rotate.
[0012] In order to facilitate the rotation of the hub, the number of the blades is set to be multiple, and each blade is located between every two adjacent wire grooves.
[0013] Such arrangement, by providing a plurality of blades, facilitates driving the hub to rotate.
[0014] In order to facilitate the rotation of the hub by the blades, a plurality of blades are arranged around the hub with the fixed column as the center, and the blades are in a spiral line shape.
[0015] In this way, by setting the hub into a vortex line shape, it is easier for the blades to drive the hub to rotate.
[0016] In order to make the wheel hub have a predetermined preset force, the distributor also includes an elastic support member and a second clamping ring. The elastic support member is sleeved on the fixing column through the second clamping ring and abuts against the second end of the wheel hub relatively close to the fixing column.
[0017] In this way, by arranging the elastic support member to support the hub, the hub has a predetermined supporting force, so that the distributor can bend at different angles according to different pressures.
[0018] The present invention also provides a distribution device, which also includes a distribution pipe and a distributor, wherein the distributor is a distributor as described in any one of the above items, wherein an inlet chamber is opened at one end of the distribution pipe, and a plurality of outlet chambers are opened at the other end, wherein the inlet chamber and the plurality of outlet chambers are interconnected, and the distributor is arranged in the distribution pipe and located between the inlet chamber and the outlet chamber; the distributor can rotate relative to the distribution pipe, and there is a gap between the distributor and the distribution pipe.
[0019] In this way, by arranging the distributor in the distribution pipe, the fluid entering the distribution pipe drives the distributor to rotate, mixes the fluid, and can evenly distribute the fluid.
[0020] In order to enable the distributor to be installed in the distribution pipe, the distribution pipe is also provided with a fixing groove, which is located between the multiple outlet chambers. The distributor includes a fixing column and a hub. The second end of the fixing column is installed in the fixing groove, and the hub is sleeved on the first end of the fixing column. The hub can rotate relative to the distribution pipe.
[0021] In this configuration, by providing a fixing groove in the distribution pipe, the distribution pipe is inserted into the fixing groove, so that the distributor is installed in the distribution pipe.
[0022] In order to enable the distribution pipe to transport from a single inlet chamber to multiple outlet chambers, the distribution pipe is also provided with a transition chamber, the diameter of the transition chamber gradually increases from the inlet chamber to the outlet chamber, the hub gradually extends from the fixed column toward the inner wall of the transition chamber, and there is the gap between the outer periphery of the hub and the inner wall forming the transition chamber.
[0023] In this way, by providing the transition section, the distribution pipe is transported from a single inlet chamber to multiple outlet chambers, and the distributor is easily accommodated.
[0024] The present invention provides an improved distributor, which is arranged between an inlet cavity and an outlet cavity. The mixed fluid entering the distributor can be fully mixed through the rotation of the distributor and evenly distributed to different outlet cavities through a distribution device. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 A schematic diagram of the structure of a distribution device provided by the present invention;
[0026] Figure 2 for Figure 1 A schematic structural diagram of the distribution device from another perspective shown;
[0027] Figure 3 for Figure 2 The schematic structural diagram of the distribution device shown is along the AA tangent direction;
[0028] Figure 4 for Figure 1 A schematic diagram of the structure of a distributor in the distribution device shown;
[0029] Figure 5 for Figure 4 A schematic structural diagram of the distributor from another perspective shown;
[0030] Figure 6 for Figure 5 The schematic diagram of the structure of the distributor along the BB direction is shown.
[0031] 100. Distribution device; 10. Distribution pipe; 11. Inlet chamber; 12. Outlet chamber; 121. Fixed groove; 13. Transition chamber; 20. Distributor; 21. Fixed column; 22. Hub; 23. Blade; 24. Wire groove; 25. Elastic support member; 26. First retaining ring; 27. Second retaining ring; 30. Gap. DETAILED DESCRIPTION
[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0033] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.
[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.
[0035] See also Figures 1 to 6 , Figure 1 A schematic diagram of the structure of a distribution device provided by the present invention, Figure 2 for Figure 1 The structural schematic diagram of the distribution device from another perspective is shown, Figure 3 for Figure 2 The schematic diagram of the structure of the distribution device along the AA tangent direction shown, Figure 4 for Figure 1 The schematic diagram of the structure of the distributor in the distribution device shown, Figure 5 for Figure 4 The schematic diagram of the structure of the distributor from another perspective is shown. Figure 6 for Figure 5 The schematic diagram of the structure of the distributor along the BB direction is shown.
[0036] In this embodiment, the distribution device 100 is used to evenly distribute the heat exchange medium to different pipes in the heat exchange system, so that the heat exchange efficiency in each pipe is uniform and efficient.
[0037] It can be understood that in other embodiments, the distribution device 100 can also provide uniform distribution and mixing functions for the distribution of beverages in the food field. The distribution device can also uniformly distribute liquid products in production activities such as agricultural irrigation and distribution of chemical products.
[0038] Conventional distribution devices usually have a distribution plate with multiple through holes between the inlet cavity and the outlet cavity, so that the fluid medium entering from the inlet cavity is distributed to different outlet cavities through the distribution holes on the distribution plate. However, the medium distributed by the existing distribution device is often a gas-liquid two-phase mixed fluid medium. Since the distribution device does not have a mixing function, there is usually a cluster or a bundle of fluid media in the gas phase or liquid phase flowing into the same outlet cavity, which is not conducive to the subsequent treatment of the fluid medium.
[0039] In response to the above technical problems, the present invention provides an improved distribution device 100, which is arranged between the inlet chamber 11 and the outlet chamber 12. Through the rotation of the distribution device 100, the fluid medium with uneven gas-liquid two-phase distribution entering the distribution device 100 can be fully mixed and evenly distributed to different outlet chambers 12 through the distribution device 100.
[0040] The specific structure of the distribution device 100 provided by the present invention is introduced below. In this embodiment, the distribution device 100 includes a distribution pipe 10 and a distributor 20. The distribution pipe 10 is used to distribute the fluid medium flowing into the inlet chamber 11 to multiple outlet chambers 12, and the distributor 20 is used to mix the fluid medium entering from the inlet chamber 11 and evenly distribute it to different outlet chambers 12.
[0041] Specifically, in the present embodiment, an inlet chamber 11 is provided at one end of the distribution tube 10, and a plurality of outlet chambers 12 are provided at the other end, the inlet chamber 11 is connected to the plurality of outlet chambers 12, and a cross-sectional area of the inlet chamber 11 is equal to the sum of the cross-sectional areas of the plurality of outlet chambers 12, so that in the process of the fluid medium flowing from the inlet chamber 11 to the outlet chamber 12, the fluid medium will not accumulate in the cavity due to the sum of the cross-sectional areas of the outlet chambers 12 being smaller than the cross-sectional area of the inlet chamber 11, or the distribution device 100 will not be too large in size due to the sum of the cross-sectional areas of the outlet chambers 12 being larger than the cross-sectional area of the inlet chamber 11. A transition chamber 13 is further provided between the inlet chamber 11 and the outlet chamber 12, and one end of the transition chamber 13 is connected to the inlet chamber 11, and the other end is connected to the plurality of outlet chambers 12, and the inner diameter of the transition chamber 13 gradually increases from the inlet chamber 11 to the outlet chamber 12.
[0042] In this way, by providing a transition section, the distribution pipe 10 is transported from a single inlet chamber 11 to a plurality of outlet chambers 12 , and the distributor 20 is easily accommodated.
[0043] It is understandable that the present invention does not limit the arrangement of the distribution tube 10, and the distribution of the fluid medium by the distribution tube 10 can also be achieved in other ways, as long as the distribution tube can distribute the fluid medium from one to multiple, for example, a multi-way pipeline.
[0044] In this embodiment, the distributor 20 includes a fixed column 21, a hub 22, blades 23 and an elastic support member 25. The fixed column 21 is used to fix the hub 22 to the transition chamber 13, the hub 22 is used to stir and evenly distribute the fluid medium, the blades 23 are used to drive the hub 22 to rotate, and the elastic support member 25 is used to support the hub 22 and provide a preset supporting force for the hub 22.
[0045] Specifically, in the present embodiment, the fixing column 21 has a first end and a second end which are arranged opposite to each other, a circular fixing groove 121 is opened in the middle of the plurality of outlet chambers 12, the fixing column 21 is cylindrical, and the second end of the fixing column 21 is installed in the fixing groove 121 for installing the wheel hub 22; the wheel hub 22 is roughly horn-shaped, and a mounting hole is opened in the middle of the wheel hub 22, the wheel hub 22 is sleeved on the first end of the fixing column 21 through the mounting hole in the middle, and the fixing column 21 is provided with a mounting groove, and the mounting grooves are respectively arranged on the upper and lower surfaces of the wheel hub 22, and a first retaining ring 26 is sleeved in the mounting groove, which respectively clamps the upper and lower surfaces of the wheel hub 22 to limit the wheel hub 22 from being separated from the fixing column 21.
[0046] In this configuration, by providing a mounting groove on the fixing column 21 , snap rings are provided at both ends of the mounting groove, and the movement of the wheel hub 22 is limited by the first snap ring, so that the wheel hub 22 and the fixing column 21 are relatively fixed.
[0047] It can be understood that the present invention is not limited to clamping the wheel hub 22 on the fixing column 21 by the first clamping ring 26. In other embodiments, a threaded fixing part can also be set on the top of the fixing column 21. The threaded fixing part restricts the wheel hub 22 from moving out of the fixing column 21, as long as it can restrict the wheel hub 22 from moving out of the fixing column 21.
[0048] Specifically, there is a gap 30 between the outer periphery of the hub 22 and the inner wall forming the transition cavity 13, and the fluid medium flows from the inlet cavity 11 to the outlet cavity 12 through the gap 30. At the same time, the hub 22 takes the axis of the fixed column 21 as the center of the circle, and a wire groove 24 is provided in the spacing ring. The wire groove 24 extends from a position relatively close to the middle of the hub 22 to the outer periphery of the hub 22, and the wire groove 24 is in the shape of a spiral line. A plurality of wire grooves 24 evenly divide the hub 22 into a plurality of hub pieces, and different hub pieces can be bent relative to each other. By providing the wire grooves 24, the outer periphery of the hub 22 can be bent downward relative to the middle of the hub 22, so that the gap 30 between the outer periphery of the hub 22 and the transition cavity 13 is changed, and more fluid medium can be allowed to pass through.
[0049] In this configuration, by providing the wire groove 24 on the hub 22 and forming a gap 30 between the hub 22 and the inner wall of the transition chamber 13 , the gas-liquid mixed fluid medium is evenly mixed through the distributor 20 and can flow evenly to each outlet chamber 12 .
[0050] It can be understood that the present invention can also set the shape of the wire groove 24 of the wheel hub 22 to a straight wire groove 24. In other embodiments, the wire groove 24 is provided with a straight wire groove 24 from the middle of the wheel hub 22 to the middle position of the periphery to the position of the periphery, so that the wheel hub 22 can be bent through the wire groove 24 after being subjected to force.
[0051] In this embodiment, the distributor 20 is provided with blades 23, and the blades 23 are used to act with the fluid medium to drive the hub 22 to rotate.
[0052] Specifically, the distributor 20 includes a plurality of blades 23, which are arranged on a side of the hub 22 facing the inlet cavity 11, and each hub piece is provided with a blade 23, the blade 23 extends from a mounting hole in the middle of the hub 22 to a position relatively close to the outer periphery of the hub 22, and a plurality of blades 23 are arranged in a ring on a side of the hub 22 facing the inlet cavity 11 with the fixed column 21 as the center, the blade 23 is in a vortex line shape, and the rotation direction of the blade 23 is the same as the rotation direction of the line groove 24; the fluid medium flows in through the inlet cavity 11 and impacts the blades 23 of the distributor 20 to drive the distributor 20 to rotate with the fixed column 21 as the center, thereby stirring and mixing the fluid medium entering from the inlet cavity 11, and flowing to the outlet cavity 12 through the gap 30 between the outer periphery of the hub 22 and the inner wall of the transition cavity 13.
[0053] With such arrangement, the blades 23 extend from a position relatively close to the middle of the hub 22 to the outer periphery of the hub 22 , and the blades 23 are vortex-shaped, which facilitates the rotation and bending of the hub 22 .
[0054] It can be understood that the present invention may not limit the matching relationship between the blades 23 on the hub 22 and the wire grooves 24. In other embodiments, the number of blades 23 on the hub 22 may be less than or less than the number of wire grooves 24, and the hub 22 may not be in a corresponding relationship with the wire grooves 24, as long as the fluid medium impacts the blades 23 and can drive the hub 22 to rotate.
[0055] In this embodiment, the elastic support member 25 is disposed inside the wheel hub 22 to support the wheel hub 22 and provide a preset supporting force for the wheel hub 22 .
[0056] Specifically, in the present embodiment, the elastic support member 25 is arranged inside the wheel hub 22, sleeved on the fixing column 21, and limitedly installed on the fixing column 21 by the second retaining ring 27, and relatively close to the bottom of the fixing column 21, the elastic support member 25 abuts against the side of the wheel hub 22 facing the outlet cavity 12, and limits the movement of the elastic support member 25 on the fixing column 21, the elastic support member 25 is trumpet-shaped, but the middle part of the elastic support member 25 is concave, and the outer periphery of the elastic support member 25 abuts against the outer periphery of the wheel hub 22, providing a larger preset supporting force for the wheel hub 22, so that when the wheel hub 22 is subjected to a larger pressure from the inlet cavity 11, the elastic support member 25 will be subjected to a larger impact force, and the wheel hub 22 will be relatively contracted, so that the gap 30 between the outer periphery of the wheel hub 22 and the inner wall of the transition cavity 13 becomes larger.
[0057] In this way, the elastic support member 25 is provided to support the hub 22, so that the hub 22 has a predetermined supporting force, and the hub 22 can bend at different angles according to different pressures, thereby changing the gap 30 between the outer periphery of the hub 22 and the inner wall of the transition chamber 13.
[0058] It can be understood that the present invention does not necessarily have an elastic support member 25. In other embodiments, the hub 22 can also be configured as a hub 22 with preset elasticity, as long as the hub 22 can relatively contract and expand with the pressure of the fluid entering the inlet chamber 11, so that the gap 30 between the outer periphery of the hub 22 and the inner wall of the transition chamber 13 changes to adapt to different flow rates.
[0059] In other embodiments, the dispenser 20 is provided with a compression spring (not shown) in addition to the elastic support member 25 , and the compression spring is used to control the sliding of the hub 22 on the fixing column 21 .
[0060] Specifically, the elastic member is arranged inside the wheel hub 22 and sleeved on the fixing column 21, and abuts against the side of the wheel hub 22 facing the outlet cavity 12. The elastic member is trumpet-shaped and can slide relative to the fixing column 21. The compression spring is sleeved on the fixing column 21 and fixed to the fixing column 21 through the second clamping ring 27, and one end of the compression spring abuts against the second clamping ring 27, and the other end abuts against the side of the elastic support member 25 facing the outlet cavity 12, and the compression spring is in a compressed state; when the flow rate or pressure of the inlet cavity 11 is greater than the preset strength of the elastic support member 25 and the wheel hub 22 cover, the wheel hub 22 and the elastic support member 25 contract, so that the gap 30 between the outer periphery of the wheel hub 22 and the inner wall of the transition cavity 13 becomes larger, and at the same time, the compression spring inside the elastic support member 25 contracts under the action of pressure, so that the wheel hub 22 and the elastic support member 25 can slide up and down the fixing column 21 as a whole, further increasing the gap 30 between the outer periphery of the wheel hub 22 and the inner wall of the transition cavity 13.
[0061] In this way, by setting the elastic support member 25 and the interaction of the compression spring, the hub 22 can support the preset pressure, and then the hub 22 can change the gap 30 between the outer periphery of the hub 22 and the inner wall of the transition chamber 13 in response to different pressures, and at the same time, the hub 22 rotates under the action of the fluid medium to stir the mixed fluid.
[0062] The following briefly describes the working process of the distribution device 100:
[0063] The distributor 20 is arranged in the distribution pipe 10, and the distributor 20 can rotate relative to the distribution pipe 10; when the mixed fluid medium enters the distribution pipe 10 from the inlet chamber 11, the mixed fluid impacts the distributor 20, and the blades 23 on the distributor 20 are impacted by the mixed fluid to drive the hub 22 to rotate, thereby stirring the mixed fluid medium, and the stirred mixed fluid medium flows from the gap 30 between the outer periphery of the hub 22 and the inner wall of the transition chamber 13 to the outlet chamber 12; at the same time, the elastic support member 25 provides a preset support force for the hub 22. When the pressure of the fluid reaches a certain preset strength, the hub 22 can shrink relatively through the wire groove 24, and the hub 22 drives the elastic support member 25 to bend, so that the gap 30 between the outer periphery of the hub 22 and the inner wall of the transition chamber 13 is enlarged, so that the fluid medium passes through the gap 30.
[0064] The present invention also provides a heat exchange system (not shown) using the above distribution device, wherein the distribution device is any one of the above distribution devices. By using the above distribution device, the heat exchange system improves the uniformity of refrigerant distribution, so that the refrigerant entering each evaporator is equal and uniform.
[0065] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0066] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection claimed by the present invention.
Claims
1. A dispenser, It is characterized in that The invention comprises a fixing column (21), a wheel hub (22), an elastic support member (25), a first snap ring (26) and a second snap ring (27); the fixing column (21) has a first end and a second end which are arranged opposite to each other; the wheel hub (22) is sleeved on the first end of the fixing column (21) and is clamped to the fixing column (21) via the first snap ring (26), and the wheel hub (22) is rotatable; the elastic support member (25) is sleeved on the fixing column (21) via the second snap ring (27) and abuts against the second end of the wheel hub (22) which is relatively close to the fixing column (21); Along the radial direction of the wheel hub (22), a plurality of wire grooves (24) are provided in the wheel hub (22) spacing ring, the plurality of wire grooves (24) dividing the wheel hub (22) into a plurality of wheel hub pieces, the wheel hub pieces being capable of bending toward the second end of the fixing column (21); The distributor further comprises a blade (23), wherein the blade (23) is arranged at a first end of the hub (22) relatively close to the fixing column (21), and the number of the blade (23) is set to be multiple.
2. The dispenser according to claim 1, It is characterized in that The wire groove (24) extends from a position relatively close to the middle of the wheel hub (22) to the outer periphery of the wheel hub (22), and the wire groove (24) is in the shape of a spiral line.
3. The dispenser according to claim 2, It is characterized in that Each blade (23) is located between every two adjacent wire grooves (24).
4. The dispenser according to claim 3, It is characterized in that A plurality of blades (23) are arranged in a ring around the hub (22) centered on the fixing column (21), and the blades (23) are in the shape of a spiral line.
5. A dispensing device, It is characterized in that It also includes a distribution pipe (10) and a distributor, wherein the distributor is the distributor according to any one of claims 1 to 4, wherein the distribution pipe (10) is provided with an inlet chamber (11) at one end and a plurality of outlet chambers (12) at the other end, wherein the inlet chamber (11) and the plurality of outlet chambers (12) are interconnected, and the distributor is arranged in the distribution pipe (10) and located between the inlet chamber (11) and the outlet chamber (12); the distributor is rotatable relative to the distribution pipe (10), and a gap (30) is provided between the distributor and the distribution pipe (10).
6. The dispensing device according to claim 5, It is characterized in that The distribution pipe (10) is further provided with a fixing groove (121), wherein the fixing groove (121) is located between the plurality of outlet chambers (12); the distributor comprises a fixing column (21) and a hub (22); the second end of the fixing column (21) is mounted on the fixing groove (121); the hub (22) is sleeved on the first end of the fixing column (21); and the hub (22) is rotatable relative to the distribution pipe (10).
7. The dispensing device according to claim 6, It is characterized in that The distribution pipe (10) is further provided with a transition chamber (13), the diameter of the transition chamber (13) gradually increasing from the inlet chamber (11) to the outlet chamber (12), the hub (22) gradually extending from the fixing column (21) toward the inner wall of the transition chamber (13), and the gap (30) is provided between the outer periphery of the hub (22) and the inner wall forming the transition chamber (13).
Citation Information
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