Spraying head

Abstract

The invention provides an atomizing spray head which comprises a shell, a water inlet hole is formed in the shell, one end of the water inlet hole is an atomizing nozzle, and the other end of the water inlet hole is a water inlet; the gap water inlet core is arranged between the water inlet and the spray nozzle, a plurality of gap holes are formed in the gap water inlet core, and the gap holes extend to the two opposite ends of the gap water inlet core so as to communicate the water inlet with the spray nozzle; wherein the cross section, perpendicular to the water flow direction in the gap hole, of each gap hole is a strip-shaped cross section, and the maximum width of the strip-shaped cross section of each gap hole is smaller than the diameter of the spray nozzle, so that dust particles in water are intercepted, and the problems that in the prior art, a spray head is short in service life and high in replacement frequency are solved.

Description

Technical Field

[0001] The invention relates to the technical field of spray devices, in particular to a spray head. Background Art

[0002] At present, in the dust control of coal mining working faces, spray devices are one of the commonly used and effective means of dust control. However, the water quality in coal mines is usually poor, containing a large amount of impurities and dust particles, which are easily accumulated in the water supply pipeline of the spray head, causing the spray head to be blocked and affecting its normal operation. In order to solve this problem, existing spray heads are usually equipped with filters to intercept large particles of impurities and prevent them from entering the spray head and causing blockage.

[0003] In the current market, the filter screen in the spray head is mainly made of 0.5mm 304 stainless steel wire or 1mm thick 304 stainless steel plate. Among them, the steel wire woven filter screen has better anti-blocking ability due to its square hole design compared with the round hole punched by the steel plate, so it has gradually become the mainstream in the design of spray heads.

[0004] However, even when a steel wire woven filter is used, when the pore diameter exceeds 1 mm, the size of dust particles that can pass through will increase accordingly, which may clog the spray port, especially for a small spray head with a spray port diameter of only 1.2 mm.

[0005] In addition, the wire mesh filter has a weak ability to resist damage when subjected to high-pressure water shock. When the pressure difference between the inside and outside of the filter reaches 1MPa, the filter may be damaged, causing a large amount of unfiltered dust to directly enter the spray head, quickly blocking the spray hole, making the spray head unable to spray normally, and thus causing the entire spray system to fail. In order to solve the blockage problem, the mine has to frequently replace the spray head, which not only increases maintenance costs, but also seriously affects the stable operation of the spray system and the dust control effect.

[0006] Therefore, the anti-clogging ability and durability of the spray head in the prior art still need to be improved, especially in an environment with poor water quality, which requires more effective filtering and pressure-resistant design to extend the service life of the spray head and reduce the replacement frequency. Summary of the invention

[0007] The main purpose of the present invention is to provide a spray head to solve the problems of short service life and high replacement frequency of the spray head in the prior art.

[0008] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a spray head, comprising: a shell, a water inlet hole is provided in the shell, one end of the water inlet hole is a spray port, and the other end of the water inlet hole is a water inlet; a slit water inlet core is provided between the water inlet and the spray port, a plurality of slit holes are provided on the slit water inlet core, each slit hole extends to the opposite ends of the slit water inlet core to connect the water inlet and the spray port; wherein the cross section of each slit hole perpendicular to the water flow direction therein is a strip cross section, and the maximum width of the strip cross section of each slit hole is smaller than the diameter of the spray port to intercept dust particles in the water.

[0009] Further, the maximum width of the strip cross section of the slit hole ranges from 0.8 mm to 1 mm; and / or the diameter of the spray port ranges from 1 mm to 1.3 mm.

[0010] Furthermore, the slit holes are distributed in parallel, and the spacing between adjacent slit holes is 3 mm.

[0011] Furthermore, the spray head also includes a porous core seat, which is arranged between the spray port and the gap water inlet core, and a plurality of branch flow holes are arranged on the porous core seat so that the pressurized water can be sprayed directionally through the branch flow holes.

[0012] Furthermore, the water inlet hole includes a straight hole section and a tapered hole section, and the spray port is located at the small end of the tapered hole section; the gap water inlet core and the porous core seat are both arranged in the straight hole section, and the branch flow hole is inclined toward the side wall of the tapered hole section.

[0013] Furthermore, the cone angle of the cone hole section is 60°.

[0014] Furthermore, the diameter of the branch flow hole on the porous core seat is 2 mm.

[0015] Further, the inclination angle of the center line of the bypass hole relative to the center line of the shell is 30°; and / or the plurality of bypass holes are distributed in a circular array.

[0016] Furthermore, the thickness of the gap water inlet core is 3 mm.

[0017] Furthermore, a connecting thread for connecting to a pressure water pipe is provided on the outer wall of the shell.

[0018] The technical solution of the present invention is applied, and the spray head of the present invention comprises: a shell, a water inlet hole is arranged in the shell, one end of the water inlet hole is a spray port, and the other end of the water inlet hole is a water inlet; a slit water inlet core is arranged between the water inlet and the spray port, and a plurality of slit holes are arranged on the slit water inlet core, and each slit hole extends to the opposite ends of the slit water inlet core to connect the water inlet and the spray port; wherein the cross section of each slit hole perpendicular to the water flow direction therein is a strip cross section, and the maximum width of the strip cross section of each slit hole is smaller than the diameter of the spray port to intercept dust particles in the water. In this way, the present invention can more effectively intercept dust particles in the water by using slit holes instead of traditional filter screens to prevent them from entering the spray port and causing blockage. Since the width of the slit hole is smaller than the diameter of the spray port, even if tiny particles adhere to the slit hole, water can still flow smoothly, greatly reducing the possibility of blockage; and the structural design of the slit water inlet core increases its anti-destruction pressure by 2-3MPa, which means that the spray head can withstand higher water pressure and is not easily damaged, thereby ensuring the stable operation of the spray system, effectively solving the problems of short service life and high replacement frequency of the spray head in the prior art, and extending the service life of the spray head. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 shows a schematic diagram of the overall structure of an embodiment of a spray head according to the present invention; and

[0021] Figure 2 A schematic structural diagram of the shell of the spray head of the present invention is shown;

[0022] Figure 3 Shows Figure 1 A top view of the spray head is shown;

[0023] Figure 4 A schematic diagram of the structure of the porous core seat of the spray head of the present invention is shown;

[0024] Figure 5 Shows Figure 4 Sectional view at AA in the middle;

[0025] Figure 6 A schematic diagram of the structure of the slit water inlet core of the present invention is shown;

[0026] Figure 7 Out Figure 6 Cross-sectional view at the middle BB.

[0027] The above drawings include the following reference numerals:

[0028] 1. Slit water inlet core; 2. Porous core seat; 3. Shell; 4. Diversion hole; 5. Slit hole; 6. Spray port. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] like Figures 1 to 7 As shown, the spray head of the present invention comprises: a shell, a water inlet hole is arranged in the shell, one end of the water inlet hole is a spray outlet, and the other end of the water inlet hole is a water inlet; a slit water inlet core is arranged between the water inlet and the spray outlet, and a plurality of slit holes are arranged on the slit water inlet core, each of which extends to the opposite ends of the slit water inlet core to connect the water inlet and the spray outlet; wherein the cross section of each slit hole perpendicular to the water flow direction therein is a strip cross section, and the maximum width of the strip cross section of each slit hole is smaller than the diameter of the spray outlet to intercept dust particles in the water.

[0031] It can be seen that the present invention can more effectively intercept dust particles in the water by using slit holes instead of traditional filter screens, preventing them from entering the spray port and causing blockage. Since the width of the slit holes is smaller than the diameter of the spray port, even if there are fine particles adhering to the slit holes, the water flow can still pass smoothly, greatly reducing the possibility of blockage; and the structural design of the slit water inlet core increases its anti-destruction pressure by 2-3MPa, which means that the spray head can withstand higher water pressure and is not easily damaged, thereby ensuring the stable operation of the spray system, effectively solving the problem of short service life and high replacement frequency of the spray head in the prior art, and extending the service life of the spray head.

[0032] Preferably, the maximum width of the strip cross-section of the slit hole ranges from 0.8 mm to 1 mm; limiting the width of the slit hole to between 0.8 mm and 1 mm can effectively intercept dust particles larger than this range while maintaining the smoothness of the water flow. This design ingeniously finds a balance between filtration accuracy and anti-clogging ability, ensuring the stable operation of the spray head under complex water conditions.

[0033] Preferably, the diameter of the spray nozzle is in the range of 1 mm to 1.3 mm. The diameter of the spray nozzle is set in the range of 1 mm to 1.3 mm to ensure fine and uniform spray, form an ideal atomization effect, and have a better dust settling effect. This atomization effect helps to effectively reduce the concentration of particulate matter in high dust environments such as coal mine working faces and improve the working environment.

[0034] In the present invention, the slit width of the slit hole 5 is smaller than the diameter of the spray port 6, so that the diameter of the dust particles that can leak through the slit hole 5 is smaller than the diameter of the spray port 6, and the spray port 6 will not be blocked.

[0035] like Figure 5 As shown, the slit holes are distributed in parallel. The parallel distribution of the slit holes ensures that the water flow is more evenly distributed on the water inlet core, avoiding uneven filtering effects caused by excessively fast or slow water flow in local areas.

[0036] Specifically, the spacing between adjacent slit holes is 3mm, which provides sufficient channels for water flow. Even if some slit holes are blocked by dust particles, other slit holes can still ensure sufficient water flow to maintain the normal operation of the spray head. This design significantly improves the anti-blocking ability of the spray head and prolongs its effective working time in a high dust environment.

[0037] like Figure 1 and Figure 4 As shown, the spray head also includes a porous core seat, which is arranged between the spray port and the gap water inlet core, and a plurality of branch holes are arranged on the porous core seat, so that the pressurized water can be sprayed directionally through the branch holes. By arranging a plurality of branch holes on the porous core seat, the flow direction of the pressurized water can be controlled to achieve directional spraying, so that the spray head can more accurately adjust the spray angle and coverage range, improve the targeting of the spray, and ensure effective coverage and sedimentation of the dust source.

[0038] Preferably, the water inlet includes a straight hole section and a tapered hole section, and the spray port is located at the small end of the tapered hole section; the special design of the straight hole section and the tapered hole section enables the water flow to be initially filtered through the gap water inlet core of the straight hole section when entering the spray head, and then form an accelerated flow in the tapered hole section, and finally generate a strong water hammer effect at the side wall of the tapered hole section to promote water flow atomization. This efficient water flow guiding mechanism ensures sufficient atomization of the spray and improves the spray efficiency.

[0039] In the present invention, the gap water inlet core and the porous core seat are both arranged in the straight hole section. The dual filtering mechanism of the gap water inlet core and the porous core seat effectively intercepts impurities and particulate matter in the water, especially when the width of the gap hole is smaller than the diameter of the spray port, it can prevent any particles that may cause blockage from entering the spray area, greatly improving the anti-blocking ability of the spray head; the diversion hole is inclined toward the side wall of the tapered hole section, and the design of the diversion hole inclined toward the side wall of the tapered hole section allows the pressurized water to be sprayed onto the side wall at an optimized angle and speed, forming an ideal atomization effect.

[0040] Preferably, the cone angle of the conical hole section is 60°, which can optimize the flow trajectory of the water flow in the conical hole section, so that the water flow forms a stronger impact when contacting the side wall of the conical hole section, thereby promoting the atomization of water and ensuring that the sprayed water droplets are small enough, so as to more effectively adsorb and settle dust particles in the air.

[0041] Specifically, the diameter of the diversion holes on the porous core is 2mm, which can form an appropriate flow rate and pressure. When water flows through these holes, it can generate high-speed jets, hit the side walls of the cone hole section, and promote the formation of water mist. This optimized atomization effect is crucial for dust settling, ensuring fine and uniform spray and improving dust control efficiency.

[0042] like Figure 5 As shown, the inclination angle of the center line of the diverter hole relative to the center line of the shell is 30°; the 30° inclination angle design can ensure that the water flow is sprayed onto the side wall of the tapered hole section at a specific angle after entering the diverter hole. This design allows the water flow to form a more effective atomization effect when it hits the side wall. At the same time, the inclined spray angle can expand the coverage of the spray and improve the uniformity and targeting of the spray; and / or multiple diverter holes are distributed in a circular array. The design of diverter holes distributed in a circular array can avoid excessive concentration of water flow and reduce the impact on the entire spray system when a single hole is blocked. This layout ensures that even if some of the flow holes are blocked, other flow holes can still ensure sufficient water flow, reducing the risk of affecting the spray performance due to blockage.

[0043] Optionally, the thickness of the gap water inlet core 1 is 3mm, and the dust particles are blocked in parallel on the gap holes 5. The amount of water passing through the gaps between the dust particles can meet the water requirements of the spray head. The anti-destruction pressure of the gap water inlet core 1 is between 3-4MPa, which is 2-3MPa higher than the anti-destruction ability of the wire filter. Therefore, the anti-blocking ability of the spray head is greatly improved, and a longer spraying time is achieved to meet the spray design requirements.

[0044] Specifically, the outer wall of the housing is provided with a connection thread for connecting to a pressure water pipe. The setting of the connection thread enables the spray head to form a tight mechanical connection with the pressure water pipe, avoiding water leakage or degradation of spray performance due to unstable connection, and ensuring the overall operation stability and reliability of the spray system.

[0045] The working principle of the present invention is as follows: the spray head is connected to the pressure water outlet, and the pressure water control switch is turned on by the signal provided by the sensor. The pressure water enters the four branch flow holes 4 from the gap hole 5 on the gap water inlet core 1, and is sprayed on the cone hole section at a set angle. Then, the dust is sprayed from the spray port 6 at a certain spray angle to settle the dust at the dust source, so that the dust is eliminated on the spot before it spreads, and the dust control design requirements are met.

[0046] The beneficial effects of the present invention are:

[0047] (1) The spray head of the present invention is more resistant to blockage than the traditional filter screen. Since the anti-destruction capacity of the water inlet core is increased by 2-3MPa, the effective use time of the spray device is extended from the original need to replace the spray head in less than a week to 1 month, which greatly extends the use time of the spray system and is well received by the mining party.

[0048] (2) The present invention has good anti-blocking performance, small size, simple structure, convenient processing and reliable quality.

[0049] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0050] The spray head of the present invention comprises: a shell, a water inlet hole is arranged in the shell, one end of the water inlet hole is a spray port, and the other end of the water inlet hole is a water inlet; a slit water inlet core is arranged between the water inlet and the spray port, a plurality of slit holes are arranged on the slit water inlet core, each slit hole extends to the opposite ends of the slit water inlet core to connect the water inlet and the spray port; wherein the cross section of each slit hole perpendicular to the water flow direction therein is a strip cross section, and the maximum width of the strip cross section of each slit hole is smaller than the diameter of the spray port to intercept dust particles in the water.

[0051] It can be seen that the present invention can more effectively intercept dust particles in the water by using slit holes instead of traditional filter screens, preventing them from entering the spray port and causing blockage. Since the width of the slit holes is smaller than the diameter of the spray port, even if there are fine particles adhering to the slit holes, the water flow can still pass smoothly, greatly reducing the possibility of blockage; and the structural design of the slit water inlet core increases its anti-destruction pressure by 2-3MPa, which means that the spray head can withstand higher water pressure and is not easily damaged, thereby ensuring the stable operation of the spray system, effectively solving the problem of short service life and high replacement frequency of the spray head in the prior art, and extending the service life of the spray head.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0053] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0054] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0056] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spray head, characterized in that: include: A housing (3), wherein a water inlet hole is provided in the housing (3), one end of the water inlet hole is a spray port (6), and the other end of the water inlet hole is a water inlet; A slit water inlet core (1) is arranged between the water inlet and the spray outlet (6), and a plurality of slit holes (5) are arranged on the slit water inlet core (1), and each of the slit holes (5) extends to opposite ends of the slit water inlet core (1) to connect the water inlet and the spray outlet (6); The cross section of each of the slit holes (5) perpendicular to the direction of water flow therein is a strip cross section, and the maximum width of the strip cross section of each of the slit holes (5) is smaller than the diameter of the spray port (6) so as to intercept dust particles in the water.

2. The spray head according to claim 1, characterized in that: The maximum width of the strip cross section of the slit hole is in the range of 0.8 mm to 1 mm; and / or the diameter of the spray port (6) is in the range of 1 mm to 1.3 mm.

3. The spray head according to claim 1, characterized in that: The slit holes are distributed in parallel, and the spacing between adjacent slit holes is 3 mm.

4. The spray head according to any one of claims 1 to 3, characterized in that The spray head also includes a porous core seat (2), which is arranged between the spray port (6) and the gap water inlet core (1), and a plurality of branch flow holes (4) are provided on the porous core seat (2) so that pressurized water can be sprayed in a direction through the branch flow holes (4).

5. The spray head according to claim 4, characterized in that: The water inlet hole comprises a straight hole section and a tapered hole section, the spray port (6) is located at the small end of the tapered hole section; the slit water inlet core (1) and the porous core seat (2) are both arranged in the straight hole section, and the branch flow hole (4) is inclined toward the side wall of the tapered hole section.

6. The spray head according to claim 5, characterized in that: The cone angle of the cone hole section is 60°.

7. The spray head according to claim 4, characterized in that: The diameter of the branch flow hole (4) on the porous core seat (2) is 2 mm.

8. The spray head according to claim 4, characterized in that: The inclination angle of the center line of the branch flow hole (4) relative to the center line of the shell (3) is 30°; and / or the plurality of branch flow holes (4) are distributed in a circular array.

9. The spray head according to any one of claims 1 to 3, characterized in that: The thickness of the slit water inlet core (1) is 3 mm.

10. The spray head according to any one of claims 1 to 3, characterized in that The outer wall of the housing (3) is provided with a connecting thread for connecting to a pressure water pipe.

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