High-pressure nozzle filter with anti-blocking function

Abstract

The high-pressure nozzle filter with the anti-blocking function comprises a first shell and a second shell, the first shell and the second shell are connected in a screwed mode, meanwhile, a plurality of liquid inlet flow channels are further formed in the first shell, and in the flowing direction of liquid, fluid channels of the liquid inlet flow channels are of an arc-shaped structure. All the liquid inlet flow channels are rotationally and symmetrically arranged around the axis of the first shell; compared with the prior art, the direction of thrust of fluid to large-particle impurities is changed through bias of the inlet end and the outlet end of the liquid inlet flow channel, so that stress balance of the large-particle impurities is destroyed, tangential thrust is applied to the large-particle impurities to push the impurities to be separated from the inlet end of the liquid inlet flow channel, and self-cleaning of the impurities is achieved; blockage caused by accumulation of large-particle impurities is avoided, and the fluency of liquid flow is improved; meanwhile, the service life of the high-pressure nozzle filter can be effectively prolonged, and long-time stable work of the high-pressure nozzle filter is guaranteed.

Description

Technical Field

[0001] This application relates to the field of fluid equipment technology, and specifically to a high-pressure nozzle filter with anti-clogging function. Background Technology

[0002] When high-pressure water contains a high concentration of impurities, the inlet filter of a high-pressure nozzle tends to accumulate impurities over time, clogging the inlet. This creates a low vacuum inside the filter, which is then crushed and damaged by the high-pressure water, rendering the nozzle unusable. A new filter structure needs to be designed to reduce the probability of impurities clogging the inlet and extend the nozzle's lifespan. Utility Model Content

[0003] The main objective of this application is to provide a high-pressure nozzle filter with anti-clogging function, which aims to solve the defect of easy clogging in the existing technology.

[0004] This application achieves the above objectives through the following technical solutions:

[0005] A high-pressure nozzle filter with anti-clogging function includes a first housing;

[0006] The second housing is threadedly connected to the first housing;

[0007] A plurality of liquid inlet channels are provided on the first housing. The inlet and outlet ends of the same liquid inlet channel are staggered along the radial direction of the first housing. The liquid inlet channels are arranged in a rotationally symmetrical manner around the axis of the first housing.

[0008] Optionally, the radial cross-section of the liquid inlet channel is set in an arc shape.

[0009] Optionally, the flow area of ​​the liquid inlet channel gradually decreases along the flow direction of the liquid.

[0010] Optionally, the flow area at the inlet end of the liquid inlet channel is 1.3-1.5 times the flow area at the outlet end.

[0011] Optionally, the flow area at the inlet end of the liquid inlet channel is 55-65 mm². 2 The flow area at the outlet end of the liquid inlet channel is 35-40 mm². 2 .

[0012] Optionally, the deflection angle of the inlet flow channel is 21-24°.

[0013] Optionally, the filter further includes a rectifier core, which is rotatably disposed within the first housing. Along the axial direction of the first housing, both ends of the rectifier core abut against the second housing and the first housing, respectively.

[0014] Optionally, along the axial direction of the first housing, a rectifier cavity, a transition cavity, and a drainage cavity are sequentially arranged inside the first housing. The transition cavity is arranged in a conical structure, and its large end is connected to the rectifier cavity. The rectifier core abuts against the inner wall of the transition cavity.

[0015] Optionally, one end of each of the inlet channels extends through the drainage cavity along the axial direction of the drainage cavity.

[0016] Compared with the prior art, this application has the following beneficial effects:

[0017] This application includes a first housing and a second housing. The first housing and the second housing are threadedly connected. The first housing is also provided with a plurality of liquid inlet channels. Along the direction of liquid flow, the fluid passage of each liquid inlet channel is arranged in an arc shape. Around the axis of the first housing, each liquid inlet channel is arranged in a rotationally symmetrical manner.

[0018] In existing technology, each inlet channel is arranged radially, meaning the line connecting the inlet and outlet ends of the inlet channel passes through the filter's axis. When large particles of impurities are present in the water, they enter the inlet channel with the water flow. At the inlet end of the inlet channel, the impurities are simultaneously subjected to the thrust of the water and the resistance of the inlet channel. Since the line connecting the inlet and outlet ends of the inlet channel passes through the filter's axis, the thrust and resistance are of equal magnitude and opposite direction, balancing each other. This causes large particles of impurities to become stuck at the inlet end of the inlet channel. (See details...) Figure 5 ;

[0019] In the technical solution described in this application, because the inlet end and outlet end of the liquid inlet channel are misaligned, the liquid flow will be deflected when passing through the liquid inlet channel. The thrust direction of the water flow on large particulate impurities will change from radial to tangential, while the resistance direction of the liquid inlet channel on large particulate impurities remains unchanged. Therefore, the thrust of the water flow will push the impurities away from the inlet end of the liquid inlet channel, thereby achieving self-cleaning of impurities. See details below. Figure 6 .

[0020] Compared with the prior art, this application not only achieves self-cleaning of the filter, avoiding blockage caused by the accumulation of large particles and improving the smoothness of liquid flow, but also effectively improves the service life of the high-pressure nozzle filter and ensures its long-term stable operation.

[0021] Secondly, this application achieves the above objectives by appropriately improving the shape of the inlet flow channel. It does not require the addition of various components, which can effectively simplify the structure of the equipment, ensure the stable operation of the filter, and reduce the hardware cost of the equipment. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the structure of a high-pressure nozzle filter with anti-clogging function provided in Embodiment 1 of this application;

[0023] Figure 2 An exploded view of a high-pressure nozzle filter with anti-clogging function provided for Embodiment 1 of this application;

[0024] Figure 3 A cross-sectional view of a high-pressure nozzle filter with anti-clogging function provided for Embodiment 1 of this application;

[0025] Figure 4 This is a plan view of the liquid inlet flow channel;

[0026] Figure 5 This is a diagram showing the liquid flow field distribution and impurity force analysis in a nozzle filter of the prior art;

[0027] Figure 6 This is a diagram showing the liquid flow field distribution and impurity force analysis of the nozzle filter described in this application;

[0028] Reference numerals: 1-First housing, 2-Second housing, 3-Inlet channel, 4-Rectifying core, 101-Rectifying cavity, 102-Transition cavity, 103-Draining cavity.

[0029] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] Example 1:

[0035] Reference Figures 1 to 6 This embodiment, as an optional embodiment of this application, discloses a high-pressure nozzle filter with anti-clogging function, including a first housing 1 and a second housing 2. Along the axis of the first housing 1, a rectifier cavity 101, a transition cavity 102 and a drainage cavity 103 are sequentially arranged on the first housing 1. The rectifier cavity 101, the transition cavity 102 and the drainage cavity 103 coaxially penetrate each other.

[0036] The inner diameter of the rectifier cavity 101 is larger than the inner diameter of the drainage cavity 103. The transition cavity 102 is provided with a conical structure, with its large end communicating with the rectifier cavity and its small end communicating with the drainage cavity 103.

[0037] The free end of the rectifier cavity 101 is threadedly connected to the second housing 2, and the first housing 1 and the second housing 2 are coaxially arranged.

[0038] Furthermore, a rectifier core 4 is rotatably disposed in the rectifier cavity 101. Along the axial direction of the first housing 1, one end of the rectifier core 4 abuts against the end face of the second housing 2, and the other end abuts against the inner wall of the transition cavity 102.

[0039] Furthermore, the first housing 1 is also provided with a plurality of liquid inlet channels 3. Preferably, a total of 10-12 liquid inlet channels 3 are provided. The inlet of each liquid inlet channel 3 is provided on the outer peripheral surface of the first housing 1, and its outlet is provided on the inner wall of the drainage cavity 103.

[0040] Along the radial direction of the first housing 1, the inlet end and outlet end of the same liquid inlet channel 3 are staggered, i.e., refer to Figure 4 On the radial cross-section of the drainage cavity 103, the first line connecting the midpoint of the inlet end of the liquid inlet channel 3 to the center of the circle is taken as the first line, and the second line connecting the midpoint of the outlet end of the liquid inlet channel 3 to the center of the circle is taken as the second line. The first and second lines form a certain angle between them. Figure 4 Angle α in;

[0041] The aforementioned included angle is the deflection angle of the liquid inlet channel 3, and the preferred deflection angle of the liquid inlet channel 3 is 21-24°;

[0042] All of the liquid inlet channels 3 are identical, and are arranged in a rotationally symmetrical manner around the axis of the first housing 1.

[0043] Furthermore, the radial cross-section of each of the liquid inlet channels 3 is arranged in an arc shape; through the arc-shaped structural design, not only can the misalignment of its inlet end and the outlet end be ensured, but also the smoothness of the inner wall of the liquid inlet channel 3 can be ensured, so that the liquid flow can pass through the filter quickly and smoothly and avoid turbulence.

[0044] Secondly, the arc-shaped liquid inlet channel 3 can change the direction of liquid flow more smoothly, that is, to form a rotating water inlet flow field with higher flow velocity and more stable rotation on the surface of the first shell 1, thereby applying greater tangential thrust to large particulate impurities and thus improving the self-cleaning effect.

[0045] Furthermore, along the flow direction of the liquid, the flow area of ​​the liquid inlet channel 3 gradually decreases. That is, by controlling the angle of the two arc-shaped inner walls of the liquid inlet channel 3, the outlet of the liquid inlet channel 3 is reduced. Specifically, the flow area at the inlet end of the liquid inlet channel 3 is 1.3-1.5 times the flow area at the outlet end.

[0046] With a large inlet and a small outlet, based on the Venturi effect, the fluid velocity will continuously increase as it passes through the gradually changing inlet channel 3, thereby improving the fluid flow efficiency and also enhancing the rinsing effect on the outer surface of the first housing 1.

[0047] Furthermore, the flow area at the inlet end of the liquid inlet channel 3 is 55-65 mm². 2 The flow area at the outlet end of the liquid inlet channel 3 is 35-40 mm². 2Preferably, the flow area at the inlet end of the liquid inlet channel 3 is 59 mm². 2 The flow area at the outlet end of the liquid inlet channel 3 is 38 mm². 2 ;

[0048] Furthermore, along the axial direction of the drainage cavity 103, one end of each liquid inlet channel 3 penetrates the drainage cavity 103. Through the above technical measures, the flow area of ​​each liquid inlet channel 3 can be effectively increased, thereby improving its flow efficiency and realizing high-flow-rate rapid liquid transportation.

[0049] Reference Figure 5 In existing technology, each inlet channel is arranged radially, meaning the line connecting the inlet and outlet ends of the inlet channel passes through the filter's axis. When large particles of impurities are present in the water, they enter the inlet channel with the water flow. At the inlet end of the inlet channel, the impurities are simultaneously subjected to the thrust of the water and the resistance of the inlet channel. Since the line connecting the inlet and outlet ends of the inlet channel passes through the filter's axis, the thrust and resistance are of equal magnitude and opposite direction, thus balancing each other (where the thrust...). Figure 5 (Indicated by F1, resistance by F2), causing large particles of impurities to get stuck at the inlet end where the liquid flows in;

[0050] Reference Figure 6 In the technical solution described in this application, because the inlet end and the outlet end of the inlet channel are misaligned, the liquid flow will be deflected when passing through the inlet channel. The thrust direction of the water flow on large particulate impurities will change from radial to tangential, while the resistance direction of the inlet channel on large particulate impurities remains unchanged. Therefore, the thrust of the water flow will push the impurities away from the inlet end of the inlet channel, thereby achieving self-cleaning of the impurities. Figure 5 The middle is represented by F1, and the resistance is represented by F2;

[0051] Compared with the prior art, this application not only achieves self-cleaning of the filter, avoiding blockage caused by the accumulation of large particles and improving the smoothness of liquid flow, but also effectively improves the service life of the high-pressure nozzle filter and ensures its long-term stable operation.

[0052] Secondly, this application achieves the above objectives by appropriately improving the shape of the inlet flow channel. It does not require the addition of various components, which can effectively simplify the structure of the equipment, ensure the stable operation of the filter, and reduce the hardware cost of the equipment.

[0053] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A high-pressure nozzle filter with anti-clogging function, characterized in that, Includes a first housing (1); The second housing (2) is threadedly connected to the first housing (1); A plurality of liquid inlet channels (3) are provided on the first housing (1). Along the radial direction of the first housing (1), the inlet end and outlet end of the same liquid inlet channel (3) are staggered. Around the axis of the first housing (1), each liquid inlet channel (3) is arranged in a rotationally symmetrical manner.

2. A high-pressure nozzle filter with anti-clogging function according to claim 1, characterized in that, The radial cross-section of the liquid inlet channel (3) is arranged in an arc shape.

3. A high-pressure nozzle filter with anti-clogging function according to claim 1, characterized in that, Along the direction of liquid flow, the flow area of ​​the liquid inlet channel (3) gradually decreases.

4. A high-pressure nozzle filter with anti-clogging function according to claim 3, characterized in that, The flow area at the inlet end of the liquid inlet channel (3) is 1.3-1.5 times the flow area at the outlet end.

5. A high-pressure nozzle filter with anti-clogging function according to claim 4, characterized in that, The flow area at the inlet end of the liquid inlet channel (3) is 55-65 mm². 2 The flow area at the outlet end of the liquid inlet channel (3) is 35-40 mm. 2 .

6. A high-pressure nozzle filter with anti-clogging function according to claim 1, characterized in that, The deflection angle of the liquid inlet channel (3) is 21-24°.

7. A high-pressure nozzle filter with anti-clogging function according to claim 1, characterized in that, The filter also includes a rectifier core (4), which is rotatably disposed inside the first housing (1). Along the axial direction of the first housing (1), the two ends of the rectifier core (4) abut against the second housing (2) and the first housing (1), respectively.

8. A high-pressure nozzle filter with anti-clogging function according to claim 7, characterized in that, Along the axial direction of the first housing (1), the first housing (1) is provided with a rectifier cavity (101), a transition cavity (102) and a drainage cavity (103) that are interconnected. The transition cavity (102) is provided with a conical structure, and its large end is connected to the rectifier cavity (101). The rectifier core (4) abuts against the inner wall of the transition cavity (102).

9. A high-pressure nozzle filter with anti-clogging function according to claim 8, characterized in that, Along the axial direction of the drainage cavity (103), one end of each of the liquid inlet channels (3) passes through the drainage cavity (103).

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