Spray head
By introducing a flow channel adjustment unit into the nozzle and using a motor-driven screw to adjust the flow channel accommodating space, the problem of frequent nozzle replacement in the spraying system is solved, enabling flexible adjustment of the spraying width and improved efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU HONGHUA DIGITAL TECH
- Filing Date
- 2025-04-11
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional spraying systems require frequent nozzle changes to adapt to the width of the target object during the spraying process, resulting in inconvenience and low efficiency.
A spray nozzle is designed that uses a flow channel adjustment unit, including first and second adjustment components coupled to each other, to move a screw along the direction of the flow channel by a motor, thereby adjusting the accommodating space of the flow channel and thus adjusting the spray width, eliminating the need to replace the spray nozzle.
It enables flexible adjustment of the spray width without changing the spray head, improving spraying efficiency and reducing liquid waste.
Smart Images
Figure CN224208252U_ABST
Abstract
Description
Technical Field
[0001] This disclosure generally relates to inkjet printing technology, and more specifically, to a printhead. Background Technology
[0002] When using a spraying system for coloring or coating a target object (e.g., fabric), the system needs to be equipped with a nozzle that matches the width of the target object. During the spraying process, the width of the target object may change. In this case, the system needs to be stopped, and the nozzle replaced to fit the target object's width. Clearly, this operation is inconvenient and results in low spraying efficiency.
[0003] In summary, in order to adapt to the width of the target object, the spray nozzle of the traditional spraying system needs to be replaced, which is inconvenient to operate and inefficient. Utility Model Content
[0004] This disclosure provides a nozzle that can adjust the spray width by adjusting the receiving space of the flow channel, which can eliminate the need to replace the nozzle of the spraying system to adapt to the width of the target object, thereby improving spraying efficiency.
[0005] According to one aspect of this disclosure, a printhead is provided, the printhead comprising: an ink supply port communicating with a split channel, wherein a liquid to be sprayed is supplied to the split channel via the ink supply port; the split channel being configured to supply the liquid to be sprayed to a plurality of nozzles; a plurality of nozzles communicating with the split channel; and a channel adjustment unit including a first adjustment component and a second adjustment component coupled to each other, the first adjustment component being disposed within the split channel and configured to move along the direction in which the split channel extends under the drive of the second adjustment component, so as to adjust the receiving space of the split channel.
[0006] In some embodiments, the first adjustment assembly includes at least a sealing device that conforms to the inner wall of the diversion channel, and the first adjustment assembly is further configured to prevent the liquid to be sprayed in the diversion channel from flowing to at least a portion of the nozzles by adjusting the position of the sealing device.
[0007] In some embodiments, each of the plurality of nozzles is a capillary tube, and the second adjustment assembly includes a screw, at least a portion of which is configured to extend into a flow channel and has a first external thread on its outer surface; the first adjustment assembly is sleeved on the screw, and at least a portion of the inner surface of the first adjustment assembly has a first internal thread that mates with the first external thread, so that the first adjustment assembly is driven by rotation of the screw.
[0008] In some embodiments, the first adjustment component includes: a nut, the nut including at least a first portion having a first internal thread on its inner surface; and a sealing device that conforms to the inner wall of the diversion channel and is configured to follow the movement of the nut.
[0009] In some embodiments, the first adjustment assembly further includes a screw sleeve disposed on the outer periphery of at least a portion of the screw, the screw sleeve being coupled to a nut at a first end; and a sealing device disposed on the outer periphery of the screw sleeve.
[0010] In some embodiments, a limiting protrusion is provided on the outer surface of the screw sleeve, one end of the sealing device abuts against the nut, and the other end of the sealing device abuts against the limiting protrusion.
[0011] In some embodiments, the nut further includes a second portion having a second internal thread on its inner surface, the second portion being closer to the sealing device than the first portion; the screw sleeve has a second external thread on its outer surface at the first end that mates with the second internal thread.
[0012] In some embodiments, the second adjustment component further includes a motor coupled to the screw and configured to drive the screw to rotate.
[0013] In some embodiments, the number of flow channel adjustment units is two, and the two flow channel adjustment units are respectively configured at both ends of the flow channel.
[0014] In some embodiments, the cross-section of the diversion channel is non-circular along the direction in which the diversion channel extends, and the profile of the first adjustment component along the direction in which the diversion channel extends matches the shape of the cross-section.
[0015] In some embodiments, the diversion channel is configured such that the liquid to be sprayed is pressurized in the containment space of the diversion channel and then output through the nozzle, and when the liquid to be sprayed is output, the pressure difference of the liquid to be sprayed at various points in the containment space of the diversion channel is within ±3%.
[0016] In some embodiments, the number of flow channel adjustment units is multiple.
[0017] According to an embodiment of this disclosure, in the nozzle, the first adjustment component can be moved along the direction of the branch channel by the second adjustment group, thereby adjusting the receiving space of the branch channel, and thus the width of the sprayed area can be adjusted.
[0018] The utility model summary section is provided to present the chosen concepts in a simplified form, which will be further described in the detailed embodiments below. The utility model summary section is not intended to identify key or essential features of this disclosure, nor is it intended to limit the scope of this disclosure. Attached Figure Description
[0019] Figure 1 A partial exploded schematic diagram of a nozzle according to an embodiment of the present disclosure is shown.
[0020] Figure 2 A partial front view schematic diagram of a nozzle according to an embodiment of the present disclosure is shown.
[0021] Figure 3 A partial top view of a nozzle according to an embodiment of the present disclosure is shown.
[0022] Figure 4 A partial cross-sectional view in the CC direction of a nozzle according to an embodiment of the present disclosure is shown.
[0023] Figure 5 It shows Figure 4 A magnified diagram of a portion of the image.
[0024] Figure 6 It shows Figure 5 A magnified diagram of a portion of the image.
[0025] In the various figures, the same or corresponding reference numerals indicate the same or corresponding parts. Detailed Implementation
[0026] Preferred embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.
[0027] The term "comprising" and its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects.
[0028] As mentioned earlier, when using a spraying system for coloring or coating a target object (e.g., fabric), the system needs to be equipped with a nozzle that matches the width of the target object. During the spraying process, the width of the target object may change. In this case, the system needs to be stopped, and the nozzle replaced to fit the target object's width. Clearly, this method is inconvenient and results in low spraying efficiency. Furthermore, using a uniformly wide nozzle to accommodate narrower target objects leads to problems such as wasted sprayed liquid.
[0029] To at least partially address one or more of the aforementioned problems and other potential issues, exemplary embodiments of this disclosure provide a printhead comprising: an ink supply port, a flow channel, a plurality of nozzles, and a flow channel adjustment unit. The ink supply port communicates with the flow channel, through which the liquid to be sprayed is supplied to the flow channel; the flow channel is configured to supply the liquid to be sprayed to the plurality of nozzles; the plurality of nozzles communicate with the flow channel; the flow channel adjustment unit includes a first adjustment component and a second adjustment component coupled to each other, the first adjustment component being disposed within the flow channel and configured to move along the direction in which the flow channel extends under the drive of the second adjustment component, thereby adjusting the accommodating space of the flow channel. This printhead can adjust the spray width by adjusting the accommodating space of the flow channel, eliminating the need to replace the printhead to adapt to the width of the target object, thus improving spraying efficiency.
[0030] Figure 1 A partial exploded view of a nozzle 100 according to an embodiment of the present disclosure is shown. Figure 1 The diagram shown is an example of an explosion at one end of a nozzle 100. For ease of understanding, the positive directions of the X, Y, and Z axes are indicated by arrows in the diagram. Figure 2 A partial front view schematic diagram of a nozzle 100 according to an embodiment of the present disclosure is shown. Figure 3 A partial top view of a nozzle 100 according to an embodiment of the present disclosure is shown. Figure 4 A partial cross-sectional view in the CC direction of a nozzle 100 according to an embodiment of the present disclosure is shown. Figure 5 It shows Figure 4 A magnified diagram of a portion of the image. Figure 6 It shows Figure 5 This is a magnified view of a portion of the image. The printhead 100 can be applied, for example, to a printing system to perform a spraying (printing) operation on a target object. The target object includes various substrates such as fabric.
[0031] The printhead 100 includes an ink supply port 102, a flow channel body 104, and a plurality of nozzles 106. The printhead 100 also includes a first adjustment assembly and a second adjustment assembly. The ink supply port 102 is connected to an ink supply device, for example, and receives liquid to be sprayed from the ink supply device. The ink supply port 102 is connected to a diversion flow channel 141, through which the liquid to be sprayed is supplied. The flow channel body 104 includes, for example, a flow channel plate 142 and a top cover plate 143. The diversion flow channel 141 is provided within the flow channel body 104. The diversion flow channel 141 includes a groove at least partially disposed in the flow channel plate 142, the bottom surface of which communicates with the plurality of nozzles 106. The diversion flow channel 141 is configured to supply liquid to be sprayed to the plurality of nozzles 106. For example, the diversion channel 141 is configured such that the liquid to be sprayed is pressurized in the receiving space of the diversion channel 141 and then output through the nozzle 106, and when the liquid to be sprayed is output, the pressure difference of the liquid to be sprayed at various points in the receiving space of the diversion channel 141 is within ±3%.
[0032] Regarding the flow channel adjustment unit, it includes a first adjustment component and a second adjustment component coupled to each other, wherein the first adjustment component is disposed within the flow channel 141 and is configured to move along the direction in which the flow channel 141 extends under the drive of the second adjustment component, so as to adjust the accommodating space of the flow channel 141.
[0033] In some embodiments, the lower surface of the upper cover plate 143 is a plane, and the groove provided in the flow channel plate 142 constitutes the flow channel 141.
[0034] In some embodiments, the lower surface of the upper cover plate 143 is provided with a groove that mates with the groove in the flow channel plate 142, and the groove on the lower surface of the upper cover plate 143 and the groove in the flow channel plate 142 together constitute the flow channel 141.
[0035] In some implementations, the flow channel 141 extends, for example, in a straight line. Multiple nozzles 106 are arranged at least along the direction in which the flow channel 141 extends (e.g., the X-axis direction). The multiple nozzles 106 are, for example, configured in multiple rows. The nozzles 106 are capillary tubes. It is worth noting that, as an illustration, Figure 1 Only three nozzles 106 are shown. The length covered by the multiple nozzles 106 corresponds to the maximum width that the spray head 100 can spray. The flow channel 141 is, for example, slightly larger than the maximum width.
[0036] The ink supply port 102 is coupled to the flow channel body 104 and thus communicates with the flow distribution channel 141. For example, the upper cover plate 143 of the ink supply port 102 is coupled to communicate with the flow distribution channel 141.
[0037] The second adjustment assembly includes, for example, a motor 161 and a screw 162. The motor 161 is coupled to the screw 162, and the motor 161 drives the screw 162 to rotate.
[0038] The nozzle 100 may also include, for example, a support plate 151, a front panel 152, a rear panel 153, a base plate 154, a side plate 167, and a motor mounting base 169. The flow channel plate 142, support plate 151, front panel 152, rear panel 153, and base plate 154 together enclose a space in which multiple nozzles 106 extend, for example,. The base plate 154 has multiple through holes 155 corresponding to the multiple nozzles 106, and the ends of the multiple nozzles 106 extend to the outside of the aforementioned space through the through holes 155. The multiple through holes 155 help to fix the multiple nozzles 106.
[0039] The side plate 167 is assembled together with the flow channel plate 142 and the support plate 151. The side plate 167 is provided with a limiting hole 1671, and the limiting part 1621 on the screw 162 is accommodated in the limiting hole 1671. The limiting part 1621 on the screw 162 is, for example, an annular limiting protrusion.
[0040] Motor 161 is coupled to screw 162, for example, via drive shaft 168, to drive screw 162. Motor mount 169 is, for example, C-shaped or U-shaped. Motor mount 169 is assembled with side plate 167, and drive shaft 168 is accommodated within the space enclosed by motor mount 169 and side plate 167. Motor 161 is positioned via mounting holes on motor mount 169 and coupled to drive shaft 168.
[0041] At least a portion of the screw 162 extends into the flow channel 141, and at least a portion of the outer surface of the screw 141 is provided with a first external thread. For example, a portion of the outer surface of the portion of the screw 162 extending into the flow channel 141 is provided with a first external thread.
[0042] The first adjustment component is sleeved on the screw 162. At least a portion of the inner surface of the first adjustment component is provided with a first internal thread that mates with the first external thread on the screw 162, so that the first adjustment component is driven by the rotation of the screw 162.
[0043] The dimensions of the first adjusting component match the inner diameter of the flow channel 141. For example, the first adjusting component fits against the inner wall of the flow channel 141. The position of the first adjusting component defines, for example, the end of the receiving space of the flow channel 141. The first adjusting component is, for example, in a piston-like state. For example, when the screw 162 is driven by the motor 161 to rotate in the positive direction, the first adjusting component does not rotate synchronously with the screw 162, but moves along a first direction (e.g., the X-axis direction) based on the engagement of the first external thread on the screw 162 and the first internal thread on the first adjusting component. That is, the first adjusting component moves towards the other end of the flow channel 141. Therefore, when the other end of the receiving space of the diversion channel 141 is stationary relative to the channel body 104, the length of the receiving space of the diversion channel 141 decreases along the extension direction of the diversion channel 141. The nozzle 106, which is outside the range covered by the receiving space of the diversion channel 141, is isolated from the receiving space of the diversion channel 141 (no longer connected). As a result, the width of the sprayed area by the nozzle 100 becomes smaller.
[0044] In some embodiments, the first adjustment assembly includes, for example, at least a sealing device 164 that abuts against the inner wall of the diversion channel 141. The first adjustment assembly is further configured to prevent the liquid to be sprayed within the diversion channel 141 (i.e., the liquid to be sprayed within the receiving space of the diversion channel 141) from flowing to at least a portion of the plurality of nozzles 106 by adjusting the position of the sealing device 164. For example, the position of the sealing device 164 defines the end of the receiving space of the diversion channel 141, and the sealing device 164 prevents nozzles 106 isolated outside the area covered by the receiving space of the diversion channel 141 from communicating with the receiving space of the diversion channel 141. Therefore, the sealing device 164 prevents the liquid to be sprayed within the receiving space of the diversion channel 141 from flowing to the nozzles 106 isolated outside the area covered by the receiving space of the diversion channel 141.
[0045] The first adjusting assembly may also include, for example, a nut 163. In some embodiments, the first adjusting assembly may also include, for example, a screw sleeve 165.
[0046] The nut 163 includes at least a first portion 1631 and a second portion 1632, wherein the second portion 1632 is closer to the sealing device 164 than the first portion 1631. The first portion 1631 is closer to the end of the flow channel 141 corresponding to the flow channel adjustment unit than the second portion 1632. The inner surface of the first portion 1631 is provided with a first internal thread. The sealing device 164 is fitted against the inner wall of the flow channel 141 and is configured to move with the nut 153.
[0047] In some embodiments, the first adjusting assembly further includes a screw sleeve 165, which is fitted onto at least a portion of the outer periphery of the screw 162. For example, the screw sleeve 165 has an open end 1652 and a sealing end 1651, the sealing end 1651 being sealed, and the open end 1652 having an opening for the screw 162 to be inserted into the screw sleeve 165. The screw sleeve 165 is fitted onto the screw 162 and at least surrounds a first end of the screw 162, the first end of which extends into the flow channel 141. The open end 1652 (e.g., the first end of the screw sleeve) is coupled to a nut 163. A sealing device 164 is fitted onto the outer periphery of the screw sleeve 165.
[0048] The first part 1631 is coupled to the screw 162, and the second part 1632 is coupled to the screw sleeve 165 fitted around the outer periphery of the screw 162. Therefore, in some embodiments, the inner diameter of the second part 1632 is larger than the inner diameter of the first part 1631.
[0049] Based on the cooperation between the screw sleeve 165 and the sealing device 164, the sealing effect can be improved, so that the screw 162 and the inner wall of the diversion channel 141 are fully sealed, preventing the liquid to be sprayed from entering the area isolated by the sealing device 164 in the diversion channel 141.
[0050] A limiting protrusion 1653 is provided on the outer surface of the screw sleeve 165. One end of the sealing device 164 abuts against the nut 163, and the other end of the sealing device 164 abuts against the limiting protrusion 1653. The limiting protrusion 1653 is provided, for example, near the opening end 1652 (e.g., the first end of the screw sleeve).
[0051] The cross-section of the diversion channel 141 is non-circular along the direction in which it extends, and the profile of the first adjusting component along the direction in which it extends matches the shape of the cross-section of the diversion channel 141. For example, the profiles of the nut 163, the sealing device 164, etc., along the direction in which they extend match the shape of the cross-section of the diversion channel 141. The profile of the limiting protrusion 1653 along the direction in which it extends matches the shape of the cross-section of the diversion channel 141. For example, the cross-section of the diversion channel 141 along the direction in which it extends is rectangular, elliptical, trapezoidal, triangular, or irregular. Therefore, when the screw 162 rotates, the nut 163 and the screw sleeve 165 (e.g., the limiting protrusion 1653 of the screw sleeve 165) are restricted by the diversion channel 141. The nut 163 and the screw sleeve 165 will not rotate synchronously with the screw 162. That is, the nut 163 and the screw sleeve 165 will not rotate relative to the diversion channel 141.
[0052] In some embodiments, the nut 163 further includes a second portion 1632 with a second internal thread on its inner surface, the second portion 1632 being closer to the sealing device 164 than the first portion 1631. The screw sleeve 165 has a second external thread on its outer surface at its first end (e.g., the open end 1652) that mates with the aforementioned second internal thread. Based on the engagement of the second internal thread and the second external thread, the nut 163 and the screw sleeve 165 can be coupled so that the screw sleeve 165 and the sealing device 164 move together with the nut 163. Furthermore, based on the engagement of the second internal thread and the second external thread, for example during installation, the nut 163 and the screw sleeve 165 can rotate relative to each other, causing the sealing device 164 to be appropriately squeezed by the nut 163 and the limiting protrusion 1653, ensuring that the nut 163 and the sealing device 164, and the sealing device 164 and the limiting protrusion 1653 are tightly fitted together. After the screw sleeve 165, the sealing device 164, the nut 163, and the screw 162 are assembled together and assembled with the diversion channel 141, the sealing device 164 is tightly fitted with the inner wall of the diversion channel 141, thereby achieving a good sealing effect.
[0053] When the screw 162 is driven by the motor 161 to rotate in the positive direction, the screw sleeve 165, sealing device 164, and nut 163 do not rotate synchronously with the screw 162. Instead, based on the engagement of the first external thread on the screw 162 and the first internal thread on the nut 163, the screw sleeve 165, sealing device 164, and nut 163 move along the first direction (e.g., the positive X-axis direction). That is, the screw sleeve 165, sealing device 164, and nut 163 move towards the other end of the diversion channel 141. Thus, when the other end of the diversion channel 141 is stationary relative to the channel body 104, the length of the diversion channel 141's accommodating space along its extension direction decreases. The nozzle 106, which is outside the area covered by the diversion channel 141's accommodating space, is isolated from the diversion channel 141's accommodating space (no longer connected). Therefore, the spray width of the nozzle 100 becomes smaller.
[0054] When the screw 162 is driven by the motor 161 to rotate in the opposite direction, the screw sleeve 165, sealing device 164, and nut 163 do not rotate synchronously with the screw 162. Instead, based on the engagement of the first external thread on the screw 162 and the first internal thread on the nut 163, the screw sleeve 165, sealing device 164, and nut 163 move in a second direction (e.g., the opposite direction of the X-axis). That is, the screw sleeve 165, sealing device 164, and nut 163 move toward the end of the diversion channel 141 corresponding to the channel adjustment unit. Thus, when the other end of the diversion channel 141 is stationary relative to the channel body 104, the length of the diversion channel 141 increases along its extension direction, and the number of nozzles 106 within the area covered by the diversion channel 141 increases. Therefore, the spray width of the spray nozzle 100 increases.
[0055] Therefore, by using the second adjustment group to drive the first adjustment component to move along the direction of the branch channel, the accommodating space of the branch channel can be adjusted, thereby adjusting the width of the sprayed area by the nozzle.
[0056] The shape and size of the cross-section of the diversion channel 141 along the direction in which the liquid to be sprayed flows through the diversion channel 141 remain basically unchanged. The screw 162 and the screw sleeve 165 occupy a very small proportion of the space in the diversion channel 141, and have a very small (or negligible) influence on the pressure of the liquid to be sprayed in the accommodating space of the diversion channel 141. Therefore, when the liquid to be sprayed is output, the pressure difference of the liquid to be sprayed at various points in the accommodating space of the diversion channel 141 is within ±3%.
[0057] In some embodiments, the number of flow channel adjustment units is two, and the two flow channel adjustment units are respectively configured at both ends of the flow channel 141.
[0058] In some embodiments, there are multiple lane adjustment units. These multiple lane adjustment units are arranged sequentially along the direction extending from the branch channel 141 and spaced apart from each other. By using multiple lane adjustment units, the accommodating space of a portion (or "segment") of the branch channel 141 can be adjusted. For example, the accommodating space of a portion of the branch channel 141 defined between two adjacent lane adjustment units can be adjusted by controlling the first adjustment component of the corresponding lane adjustment unit to move along the direction extending from the branch channel, i.e., adjusting the spray width corresponding to the portion of the branch channel 141 defined between two adjacent lane adjustment units.
[0059] In some embodiments, the spraying system in which the nozzle 100 is applied includes a width detection device and a control device. The width detection device detects the width of a target object, for example, based on image analysis. The control device obtains the determined width of the target object from the width detection device and generates instructions to control the nozzle 100 to adjust the spraying width based on the width of the target object. For example, the control device generates instructions to adjust the spraying width, controlling a second adjustment component of the nozzle 100 to drive a first adjustment component to move along the direction extending from the flow channel, so that the nozzle 100 is adjusted to a spraying width suitable for the width of the target object.
[0060] For example, the control device controls the motor 161 of the second adjustment assembly to rotate so as to drive the screw sleeve 165, the sealing device 164 and the nut 163 to move to the target position that matches the width of the target object through the screw 162, so that the nozzle 100 is adjusted to a spray width suitable for the width of the target object.
[0061] In some embodiments, for example, two flow channel adjustment units can be used to adjust the two ends of the flow channel 141 respectively, so as to adjust the accommodating space of the flow channel 141, thereby adjusting the spraying width corresponding to the nozzle 100.
[0062] In some embodiments, for example, two flow channel adjustment units can be used to adjust the two ends of the split flow channel 141 respectively, so as to adjust the accommodating space of the split flow channel 141. For example, the boundary of one end of the accommodating space of the split flow channel 141 corresponds to position A, and the boundary of the other end of the accommodating space of the split flow channel 141 corresponds to position B, thereby adjusting the spraying range corresponding to the nozzle 100. That is, adjusting the positions corresponding to the boundaries of the two ends of the spraying range corresponding to the nozzle 100, so as to adapt to the position of the target object, or to adapt to the position corresponding to the spraying target on the target object.
[0063] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
[0064] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.
Claims
1. A nozzle, characterized in that, include: The ink supply port is connected to the distribution channel, and the liquid to be sprayed is supplied to the distribution channel through the ink supply port; The flow channel is configured to supply the liquid to be sprayed to multiple nozzles; Multiple nozzles connected to the flow distribution channel; The flow channel adjustment unit includes a first adjustment component and a second adjustment component coupled to each other. The first adjustment component is disposed in the flow channel and is configured to move along the direction in which the flow channel extends under the drive of the second adjustment component, so as to adjust the accommodating space of the flow channel.
2. The nozzle according to claim 1, characterized in that, The first adjustment assembly includes at least a sealing device that fits against the inner wall of the diversion channel, and the first adjustment assembly is further configured to prevent the liquid to be sprayed in the diversion channel from flowing to at least a portion of the nozzles by adjusting the position of the sealing device.
3. The nozzle according to claim 1, characterized in that, Each of the plurality of nozzles is a capillary tube, and the second adjustment assembly includes a screw, at least a portion of which is configured to extend into a flow channel and has a first external thread on its outer surface; the first adjustment assembly is sleeved on the screw, and at least a portion of the inner surface of the first adjustment assembly has a first internal thread that mates with the first external thread, so that the first adjustment assembly is driven by rotation of the screw.
4. The nozzle according to claim 3, characterized in that, The first adjustment component includes: A nut, comprising at least a first portion, the inner surface of which is provided with the first internal thread; and The sealing device fits against the inner wall of the flow channel and is configured to move with the nut.
5. The nozzle according to claim 4, characterized in that, The first adjustment assembly further includes a screw sleeve, which is sleeved on the outer periphery of at least a portion of the screw, and the screw sleeve is coupled to a nut at a first end; The sealing device is fitted around the outer circumference of the screw sleeve.
6. The nozzle according to claim 4, characterized in that, A limiting protrusion is provided on the outer surface of the screw sleeve, one end of the sealing device abuts against the nut, and the other end of the sealing device abuts against the limiting protrusion.
7. The nozzle according to claim 6, characterized in that, The nut also includes a second part with a second internal thread on its inner surface, the second part being closer to the sealing device than the first part; The screw sleeve has a second external thread on the outer surface of the first end that mates with the second internal thread.
8. The nozzle according to claim 3, characterized in that, The second adjustment component also includes: An electric motor is coupled to a screw and configured to drive the screw to rotate.
9. The nozzle according to claim 1, characterized in that, There are two flow channel adjustment units, which are respectively configured at both ends of the flow channel.
10. The nozzle according to claim 1, characterized in that, The cross-section of the diversion channel is non-circular along the direction in which the diversion channel extends, and the profile of the first adjustment component along the direction in which the diversion channel extends matches the shape of the cross-section.
11. The nozzle according to claim 1, characterized in that, The diversion channel is configured such that the liquid to be sprayed is pressurized in the containment space of the diversion channel and then output through the nozzle, and when the liquid to be sprayed is output, the pressure difference of the liquid to be sprayed at various points in the containment space of the diversion channel is within ±3%.
12. The nozzle according to claim 1, characterized in that, There are multiple flow channel adjustment units.