A slow flow nozzle and a filling machine

Abstract

The application relates to the technical field of liquid filling, and discloses a slow-flow nozzle and a filling machine, wherein the slow-flow nozzle comprises a nozzle shell, a flow divider and an outflow cover; the nozzle shell comprises a first part and a second part, the first part surrounds a cylindrical structure, and the second part surrounds a conical structure; the flow divider and the outflow cover are sequentially arranged on the second part along the flow direction of liquid; the flow divider comprises a flow divider bottom disc, a conical part is arranged on one side of the flow divider bottom disc which faces the first part, the top end of the conical part points to the first part, a plurality of flow divider holes are further arranged on the flow divider bottom disc, and the flow divider holes are arranged around the conical part; and the outflow cover is provided with a plurality of outflow holes. The nozzle can be arranged above the liquid surface, the liquid flowing out of the nozzle has a low flow rate, the impact on the liquid surface and the side wall of the liquid storage tank is small, the structure of the nozzle is simple, a precise intelligent adjusting device does not need to be arranged, and the cost is low.

Description

Technical Field

[0001] This invention relates to the field of liquid injection technology, and more particularly to a slow-flow nozzle and injection machine. Background Technology

[0002] Currently, in industrial production such as oil transportation, liquid chemical raw material transfer, and beverage bottling, it is necessary to keep the liquid level stable during the filling process to ensure filling accuracy and safety. To achieve this, a relatively simple method is to extend the nozzle to near the bottom of the storage tank, so that the liquid level is above the outlet during the filling process. However, this method causes the outer surface of the nozzle to come into contact with the liquid, which can easily contaminate the liquid being filled. At the same time, the nozzle is also susceptible to corrosion, which can affect the structure and service life of the nozzle. Alternatively, an adjustment device can be set up to change the outflow rate through intelligent control, but the structure is more complex and the cost is higher. Summary of the Invention

[0003] This invention provides a slow-flow nozzle and a filling machine to solve the problems in the prior art that require extending the nozzle to near the bottom of the storage tank or setting up a complex adjustment device to assist in filling in order to maintain a stable liquid level during the filling process.

[0004] In a first aspect, embodiments of the present invention provide a slow-flow nozzle, which includes a nozzle housing, a flow divider, and an outlet cover;

[0005] The nozzle housing includes a first part and a second part. The first part is a cylindrical structure, and the second part is connected to the first part. Along the direction of liquid flow, the cross-sectional area of ​​the second part gradually increases.

[0006] The flow divider and the outlet cover are sequentially arranged in the second part along the flow direction of the liquid. The flow divider includes a flow divider base, and a conical part is provided on the side of the flow divider base facing the first part. The top of the conical part points to the first part. The flow divider base is also provided with a plurality of flow divider holes, which are arranged around the conical part. The outlet cover is provided with a plurality of outlet holes.

[0007] In the above embodiment, after the liquid enters the nozzle, it flows from the first part to the second part. Along the flow direction of the liquid, the cross-sectional area of ​​the second part gradually increases. A diverter is provided in the second part. The diverter includes a diverting base and a conical part on the diverting base. The conical part has a top and the top faces the first part. After the liquid enters the second part from the first part, it will be diverted by the conical part and dispersed to the surrounding area of ​​the conical part. In this way, the liquid can be dispersed to flow in a larger space. In addition, multiple diverting holes are provided around the conical part. After the liquid flows out of the diverting holes, it can form multiple liquid columns in a larger cross-section. These liquid columns continue to flow and flow out through the outlet holes on the surface of the outlet cover. The liquid columns are further diverted. Under the action of the diverting base and the outlet cover, the flow velocity of the liquid is reduced. During use, the nozzle can be set above the liquid surface. The liquid flowing out of the nozzle has a low flow velocity, and the impact on the liquid surface and the side wall of the storage tank is small. In addition, the nozzle has a simple structure and does not require a precise intelligent adjustment device, so the cost is low.

[0008] Optionally, the diversion hole is a fan-shaped hole.

[0009] Optionally, the cross-sectional area of ​​the diversion orifice gradually increases along the direction of liquid flow.

[0010] Optionally, the diverter further includes a conical cylinder, one end of which is connected to the diverter chassis, and the other end of which is away from the diverter chassis is disposed towards the first part and communicates with the first part; the cylinder wall of the conical cylinder is connected to the second part.

[0011] Optionally, the slow-flow nozzle further includes a deceleration ring, which is located at one end of the second part near the first part. The deceleration ring has a deceleration hole, the cross-sectional area of ​​which is smaller than the cross-sectional area of ​​the first part.

[0012] In the above optional embodiments, the deceleration ring has the function of decelerating and limiting the flow of liquid. As the liquid flows through the nozzle, it passes through the deceleration ring, the distributor and the outlet cover in sequence. The flow rate of the liquid gradually decreases. After the liquid flows out through the outlet, the impact on the liquid surface and the inner wall of the storage tank is small, which helps to keep the liquid surface stable.

[0013] Optionally, the distributor further includes a conical cylinder, one end of which is connected to the distributor chassis, and the other end of which is away from the distributor chassis presses the deceleration ring against the end of the second part near the first part, and the conical cylinder communicates with the first part through the deceleration hole;

[0014] The wall of the conical cylinder is connected to the second part.

[0015] Optionally, the deceleration ring includes a first deceleration ring and a second deceleration ring, which are arranged sequentially along the flow direction of the liquid and are respectively provided with the deceleration holes.

[0016] In the above optional embodiments, the second deceleration ring is disposed on the back side of the first deceleration ring, which supports the first deceleration ring and can reduce the damage to the first deceleration ring under large impact forces.

[0017] Optionally, the outlet cover includes a cover body, the outlet hole is disposed on the cover body, and a protruding ring is provided on the side of the cover body facing the diversion chassis, the protruding ring being connected to the second part.

[0018] Optionally, the cross-sectional area of ​​the outlet hole gradually increases along the direction of liquid flow.

[0019] In the above optional embodiments, the flow rate of the liquid can be further reduced by gradually increasing the cross-sectional area of ​​the outlet orifice.

[0020] Secondly, embodiments of the present invention also provide a filling machine, which includes the slow-flow nozzle described in any of the above technical solutions.

[0021] In the above embodiment, the slow-flow nozzle used in the filling machine includes a cylindrical first part and a conical second part. The second part is equipped with a distributor and an outlet cover. The distributor base is provided with a conical section. Under the action of the conical section, the liquid can be dispersed into a larger space for flow. In addition, multiple distribution holes are provided around the conical section. After the liquid flows out of the distribution holes, it can form multiple liquid columns in a large cross-section. These liquid columns continue to flow and flow out through the outlet holes on the surface of the outlet cover. The liquid columns are further divided. Under the action of the distributor base and the outlet cover, the flow velocity of the liquid is reduced. During use, the nozzle can be positioned above the liquid surface. The liquid flowing out of the nozzle has a low flow velocity, resulting in less impact on the liquid surface and the side wall of the storage tank. Furthermore, the nozzle has a simple structure and does not require a precise intelligent adjustment device, thus reducing costs. Attached Figure Description

[0022] Figure 1 , Figure 2 This is an exploded view of the structure of the slow-flow nozzle provided in an embodiment of the present invention;

[0023] Figure 3 for Figure 1 , Figure 2 A cross-sectional view of the slow-flow nozzle shown;

[0024] Figure 4 for Figure 3 The diagram shows a cross-sectional view of the distributor in a slow-flow nozzle.

[0025] Figure 5 for Figure 3 The diagram shows a cross-sectional view of the outlet cover in a slow-flow nozzle.

[0026] Figure label:

[0027] 10- Nozzle housing; 11- First part; 12- Second part; 20- Flow divider; 21- Flow divider chassis; 211- Conical part; 212- Flow divider orifice; 212a- Fan-shaped orifice; 22- Conical cylinder; 30- Outlet cover; 301- Outlet orifice; 31- Cover body; 32- Protruding ring; 40- Deceleration ring; 401- Deceleration hole; 41- First deceleration ring; 42- Second deceleration ring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0029] This invention provides a slow-flow nozzle to solve the problem in the prior art that in order to maintain a stable liquid level during the filling process, the nozzle needs to be extended to the vicinity of the bottom of the storage tank for filling, or a complex adjustment device needs to be set up to assist in filling.

[0030] like Figure 1 , Figure 2 , Figure 3 As shown, the slow-flow nozzle includes a nozzle housing 10, a flow divider 20, and an outlet cap 30, wherein:

[0031] The nozzle housing 10 includes a first part 11 and a second part 12. The first part 11 is a cylindrical structure, and the second part 12 is connected to the first part 11. Along the flow direction of the liquid, the cross-sectional area of ​​the second part 12 gradually increases.

[0032] The distributor 20 and the outlet cover 30 are arranged sequentially in the second part 12 along the flow direction of the liquid. The distributor 20 includes a distributor base 21. A tapered part 211 is provided on the side of the distributor base 21 facing the first part 11. The top of the tapered part 211 points to the first part 11. A plurality of distributor holes 212 are also provided on the distributor base 21, and the distributor holes 212 are arranged around the tapered part 211. The outlet cover 30 is provided with a plurality of outlet holes 301.

[0033] Specifically, such as Figure 1 , Figure 2As shown, the first part 11 of the nozzle housing 10 is a cylindrical structure for connecting to the pipeline of the filling machine. Optionally, the inner surface of the first part 11 is provided with internal threads, and the pipeline connected to the first part 11 is provided with external threads, and the two are connected by threads. The second part 12 of the nozzle housing 10 is connected to the first part 11 and is a tapered structure that gradually expands outward, that is, the cross-sectional area of ​​the second part 12 gradually increases along the direction of liquid flow.

[0034] The nozzle has an inlet located in the first part 11 and an outlet located in the second part 12. The cross-sectional area of ​​the outlet is larger than that of the inlet.

[0035] like Figure 3 As shown, within the second part 12 of the nozzle, the distributor 20 and the outlet cover 30 are arranged sequentially along the liquid flow direction. The distributor 20 includes a distributor base 21, which is arranged perpendicular to the central axis of the second part 12. A conical portion 211 is provided on the side of the distributor base 21 facing the first part 11. From the top end to the bottom end of the conical portion 211, the conical portion 211 gradually becomes thicker, and the top end of the conical portion 211 points towards the first part 11. After the liquid enters the second part 12 from the first part 11, it will be dispersed to the surrounding area of ​​the conical portion 211 by the diversion effect of the conical portion 211. Furthermore, due to the diversion base 21... The cross-sectional area of ​​the location is relatively large. Therefore, under the action of the cone-shaped part 211, the liquid can be dispersed to flow over a larger area. Multiple diversion holes 212 are provided around the cone-shaped part 211. After being dispersed by the cone-shaped part 211, the liquid can enter the diversion holes 212. After flowing out of the diversion holes 212, the liquid can form multiple liquid columns in a larger cross-section, and the flow velocity of the liquid is reduced. The outlet cover 30 is located behind the distributor 20. Multiple outlet holes 301 are provided on the outlet cover 30. The liquid flows out through the outlet holes 301 on the surface of the outlet cover 30, and the liquid is further diverted, and the flow velocity of the liquid is further reduced.

[0036] During use, the nozzle can be positioned above the liquid surface. The liquid flowing through the nozzle can be split into multiple liquid columns within a large cross-section, and has a low flow velocity. This results in less impact on the liquid surface and the side wall of the storage tank, which helps maintain the stability of the liquid surface. It eliminates the need to position the nozzle below the liquid surface, thus solving the problems of easy contamination of the liquid and easy corrosion of the nozzle when it is placed below the liquid surface. In addition, the nozzle has a simple structure and can directly split and slow down the liquid through mechanical structure, avoiding the need to set up a precise adjustment device to control the liquid flow rate, thereby reducing costs.

[0037] In a specific configuration, the central axis of the conical portion 211, the central axis of the first portion 11, and the central axis of the second portion 12 coincide. The conical portion 211 can be a cone or other pyramidal structure, such as... Figure 3 As shown, the conical part 211 is a cone. The surface of the cone is relatively smooth, which can prevent the surface material from falling off and contaminating the liquid under the impact of the liquid.

[0038] The shape of the diversion hole 212 is not limited; it can be a circular hole, a polygonal hole, or a hole of other shapes. In some embodiments, such as... Figure 1 , Figure 2 As shown, the diversion hole 212 is a fan-shaped hole 212a, which surrounds the conical part 211. In the radial direction, the fan-shaped hole 212a becomes wider and narrower. The narrower end of the fan-shaped hole 212a is close to the bottom of the conical part 211, and the wider end of the fan-shaped hole 212a is close to the edge of the diversion base 21. By setting the fan-shaped hole 212a, the area between the bottom of the conical part 211 and the edge of the diversion base 21 can be effectively utilized, so that the liquid dispersed by the conical part 211 can be dispersed as soon as possible through the diversion hole 212.

[0039] Structurally, the fan-shaped hole 212a includes a first sidewall, a second sidewall, and a third sidewall. The first and second sidewalls are both planar structures and are intersecting. The intersection is close to the bottom end of the tapered portion 211. The third sidewall is an arc-shaped surface. The third sidewall is connected to the first and second sidewalls respectively and is located away from the bottom end of the tapered portion 211.

[0040] Along the direction of liquid flow, the cross-sectional area of ​​the diversion orifice 212 can remain constant or gradually increase. In the latter case, as the liquid passes through the diversion orifice 212, in addition to frictional resistance, the liquid will also experience local resistance, mainly due to reverse pressure difference or eddies, as the cross-sectional area of ​​the diversion orifice 212 increases. As the resistance to the liquid increases, the flow velocity is reduced.

[0041] In addition to the split-flow chassis 21, in some embodiments, such as Figure 3 , Figure 4 As shown, the diverter 20 also includes a conical cylinder 22, one end of which is connected to the diverter base 21, and the other end of which is away from the diverter base 21 is positioned toward the first part 11 and communicates with the first part 11; the cylinder wall of the conical cylinder 22 is connected to the second part 12.

[0042] Both the conical cylinder 22 and the second part 12 of the nozzle housing 10 are conical structures. The conical cylinder 22 is in close contact with the surface of the second part 12 inside the second part 12, and there is a large contact area between them. They can be assembled by interference fit, so that the diverter 20 is relatively strong as a whole.

[0043] The conical cylinder 22 and the diversion chassis 21 can be an integral structure.

[0044] In some embodiments, the slow-flow nozzle further includes a deceleration ring 40, which is disposed at one end of the second part 12 near the first part 11. The deceleration ring 40 is provided with a deceleration hole 401, and the cross-sectional area of ​​the deceleration hole 401 is smaller than the cross-sectional area of ​​the first part 11.

[0045] The edge of the deceleration ring 40 abuts against the inner surface of the second part 12 of the nozzle housing 10. The liquid flowing out of the first part 11 needs to enter the second part 12 through the deceleration hole 401 of the deceleration ring 40. Since the cross-sectional area of ​​the deceleration hole 401 is smaller than that of the first part 11, the deceleration ring 40 has the function of limiting the flow of liquid. Furthermore, due to the influence of flow resistance, the flow velocity of the liquid decreases after passing through the deceleration ring 40.

[0046] As the liquid flows through the nozzle, it passes through the deceleration ring 40, the distributor 20, and the outlet cover 30 in sequence. The flow rate of the liquid gradually decreases. After the liquid flows out through the outlet 301, the impact on the liquid surface and the inner wall of the storage tank is small, which helps to keep the liquid surface stable.

[0047] When the distributor 20 includes a conical cylinder 22, the deceleration ring 40 is located at the end of the conical cylinder 22 away from the distributor chassis 21. The deceleration ring 40 can be an integral structure with the conical cylinder 22, which can reduce the number of parts. Alternatively, the deceleration ring 40 can be a separate structure from the conical cylinder 22, with the conical cylinder 22 pressing the deceleration ring 40 against the end of the second part 12 of the nozzle housing 10 near the first part 11. The deceleration ring 40 does not need to be additionally fixed to the second part 12 of the nozzle housing 10 and the conical cylinder 22 of the distributor 20. This is because after the conical cylinder 22 of the distributor 20 is fixed to the second part 12 of the nozzle housing 10, it can generate a compressive force on the deceleration ring 40, thereby pressing the deceleration ring 40 against the end of the second part 12 with a smaller diameter. The installation process is relatively simple, and the deceleration ring 40 can be replaced if it is damaged by the impact of the liquid.

[0048] In both of the above configurations, the conical cylinder 22 is connected to the first part 11 through the deceleration hole 401.

[0049] like Figures 1-3In the nozzle shown, the deceleration ring 40 and the conical cylinder 22 are separate structures. The nozzle can be installed according to the following steps: First, insert the deceleration ring 40 into the second part 12 of the nozzle housing 10 from the larger diameter end. Then, insert the distributor 20. The wall of the conical cylinder 22 of the distributor 20 and the second part 12 can be assembled by interference fit. After assembly, the deceleration ring 40 abuts against the smaller diameter end of the second part 12 under the squeezing action of the conical cylinder 22. Finally, install the outlet cover 30 at the larger diameter end of the second part 12 of the nozzle housing 10.

[0050] like Figure 1 , Figure 3 As shown, the deceleration ring 40 includes a first deceleration ring 41 and a second deceleration ring 42. The first deceleration ring 41 and the second deceleration ring 42 are arranged sequentially along the flow direction of the liquid, and each is provided with a deceleration hole 401.

[0051] Specifically, the first deceleration ring 41 faces the fluid and is subjected to a larger impact force. The second deceleration ring 42 is located on the back side of the first deceleration ring 41 and provides support for the first deceleration ring 41. Compared with the first deceleration ring 41, the second deceleration ring 42 is less susceptible to damage and has a longer service life. During maintenance, the first deceleration ring 41 can be replaced separately.

[0052] Optionally, the first deceleration ring 41 and the second deceleration ring 42 can be engaged by setting protrusions and grooves to achieve relative fixation.

[0053] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, the outlet cover 30 includes a cover body 31, an outlet hole 301 is provided on the cover body 31, and in addition to the cover body 31, the outlet cover 30 also includes a protruding ring 32 provided on the side of the cover body 31 facing the diversion chassis 21, and the protruding ring 32 is connected to the second part 12.

[0054] There are multiple outlet holes 301, which form multiple circumferences with progressively increasing radii. The number of outlet holes 301 increases layer by layer from the inside out. The convex ring 32 is located between the distribution base 21 and the cover 31, forming a gap between them. After the liquid flows out through the distribution hole 212 on the distribution base 21, it mixes in this gap and continues to flow, finally flowing out through the outlet holes 301. The outlet holes 301 are distributed across the entire surface of the cover 31, so the liquid can form multiple liquid columns flowing out in a large cross-section.

[0055] Along the flow direction of the liquid, the cross-sectional area of ​​the outlet orifice 301 can remain unchanged, or it can gradually increase. In the latter case, as the liquid passes through the outlet orifice 301, in addition to the frictional resistance, the liquid will also be subject to local resistance, mainly due to the reverse pressure difference or eddies, as the cross-sectional area of ​​the outlet orifice 301 increases. The resistance experienced by the liquid increases, and the flow velocity is reduced.

[0056] Based on the same inventive concept, embodiments of the present invention also provide an injection machine, which includes the slow-flow nozzle described in any of the above embodiments.

[0057] like Figure 1 , Figure 2 , Figure 3 As shown, the slow-flow nozzle used in this filling machine includes a cylindrical first part 11 and a conical second part 12. The second part 12 is equipped with a distributor 20 and an outlet cover 30. The distributor 20 has a conical part 211 on its distributor base 21. Under the action of the conical part 211, the liquid can be dispersed into a larger space. Furthermore, multiple distributor holes 212 are provided around the conical part 211. After the liquid flows out of the distributor holes 212, it can form multiple liquid columns in a larger cross-section. These liquid columns continue to flow and flow out through the outlet holes 301 on the surface of the outlet cover 30. The liquid columns are further divided. Under the action of the distributor base 21 and the outlet cover 30, the flow velocity of the liquid is reduced. During use, the nozzle can be positioned above the liquid surface. The liquid flowing out of the nozzle has a lower flow velocity, resulting in less impact on the liquid surface and the side wall of the storage tank. Moreover, the nozzle has a simple structure and does not require a precise intelligent adjustment device, thus reducing costs.

[0058] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A slow-flow nozzle, characterized in that, Includes nozzle housing, distributor, and outlet cap; The nozzle housing includes a first part and a second part. The first part is a cylindrical structure, and the second part is connected to the first part. Along the direction of liquid flow, the cross-sectional area of ​​the second part gradually increases. The flow divider and the outlet cover are sequentially arranged in the second part along the flow direction of the liquid. The flow divider includes a flow divider base, and a conical part is provided on the side of the flow divider base facing the first part. The top of the conical part points to the first part. The flow divider base is also provided with a plurality of flow divider holes, which are arranged around the conical part. The outlet cover is provided with a plurality of outlet holes. The slow-flow nozzle also includes a deceleration ring, which is located at one end of the second part near the first part. The deceleration ring is provided with a deceleration hole, and the cross-sectional area of ​​the deceleration hole is smaller than the cross-sectional area of ​​the first part. The diverter also includes a conical cylinder, one end of which is connected to the diverter chassis, and the other end of which is away from the diverter chassis presses the deceleration ring against the end of the second part near the first part, and the conical cylinder communicates with the first part through the deceleration hole; The wall of the conical cylinder is connected to the second part.

2. The slow-flow nozzle as described in claim 1, characterized in that, The diversion orifice is a fan-shaped orifice.

3. The slow-flow nozzle as described in claim 1 or 2, characterized in that, Along the direction of liquid flow, the cross-sectional area of ​​the diversion orifice gradually increases.

4. The slow-flow nozzle as described in claim 1 or 2, characterized in that, The deceleration ring includes a first deceleration ring and a second deceleration ring, which are arranged sequentially along the flow direction of the liquid and are respectively provided with the deceleration holes.

5. The slow-flow nozzle as described in claim 1 or 2, characterized in that, The outlet cover includes a cover body, the outlet hole is provided on the cover body, and a protruding ring is provided on the side of the cover body facing the diversion chassis, the protruding ring being connected to the second part.

6. The slow-flow nozzle as described in claim 1 or 2, characterized in that, Along the direction of liquid flow, the cross-sectional area of ​​the outlet hole gradually increases.

7. A filling machine, characterized in that, Including the slow-flow nozzle as described in any one of claims 1 to 6.

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