Filtering structure for high-pressure spray head

Abstract

The utility model provides a filter structure for a high-pressure spray head. The filter structure comprises a protective sleeve, a screwing structure, a sealing mechanism, a filter screen structure, a filter element assembly and a connecting sleeve used for being connected with the high-pressure spray head. The filter screen structure and the filter element assembly are arranged on the inner side of the protective sleeve; one end of the protective sleeve is provided with a threaded sleeve for connecting a water inlet pipe, the other end of the protective sleeve is connected with the connecting sleeve through the sealing mechanism, and the screwing structure is arranged on the outer wall of the protective sleeve; the filter screen structure comprises a first filter screen, a second filter screen, a sealing assembly and a fixing sleeve. According to the filtering structure for the high-pressure spray head, the problem that the operation and maintenance cost is increased due to the fact that a filter element or a filter screen of a filtering structure for the high-pressure spray head in the prior art is complex in design and difficult to clean is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of nozzle filtration, and particularly relates to a filtration structure for a high-pressure nozzle. Background Art

[0002] The most common use of a high-pressure nozzle is for cleaning. By pressurizing water to an extremely high pressure, the nozzle can effectively remove stubborn stains such as dirt, oil stains, and mud on the surface. It is widely used in industrial equipment cleaning, car washing, building exterior wall cleaning and other fields. Impurities, sand grains or other particulate matters contained in the water are likely to accumulate at the nozzle of the nozzle, resulting in nozzle blockage, thereby affecting the smoothness of the water flow and the spraying effect. When impurities blockage or wear occurs, the nozzle needs to be maintained and cleaned more frequently. Due to the complex design of the filter element or filter screen of the filtration structure for high-pressure nozzles in the related art, it is difficult to clean, resulting in the problem of increasing operation and maintenance costs, and may lead to an extended downtime. Summary of the Invention

[0003] In view of this, the utility model aims to solve at least one of the related technical problems to a certain extent.

[0004] To achieve the above object, the technical solution of the utility model is realized as follows:

[0005] A filtration structure for a high-pressure nozzle, comprising a protective sleeve, a screwing structure, a sealing mechanism, a filter screen structure, a filter element assembly and a connecting sleeve for connecting to the high-pressure nozzle;

[0006] Both the filter screen structure and the filter element assembly are arranged inside the protective sleeve;

[0007] One end of the protective sleeve is provided with a threaded sleeve for connecting to the water inlet pipe, the other end of the protective sleeve is connected to the connecting sleeve through the sealing mechanism, and the screwing structure is arranged on the outer wall of the protective sleeve;

[0008] The filter screen structure includes a first filter screen, a second filter screen, a sealing component and a fixing sleeve. One end of the first filter screen is detachably connected to the sealing mechanism through a flange plate, the other end of the first filter screen is detachably connected to the filter element assembly through the fixing sleeve, the end of the second filter screen is detachably connected to the first filter screen through the sealing component, and the sealing component is used to seal the gap between the second filter screen and the protective sleeve.

[0009] Further, the sealing component includes a sealing sleeve and a first sealing ring. The first sealing ring is arranged on the outer side of the sealing sleeve. The end of the sealing sleeve is fixedly connected to the second filter screen, and the inner side of the sealing sleeve is threadedly connected to the end of the first filter screen.

[0010] Furthermore, the filter element assembly includes a first filter element structure, a second filter element structure and a fixing plate. The first filter element structure and the second filter element structure are symmetrically arranged on both sides of the fixing plate. The fixing plate is connected to the fixed sleeve by screws. The first filter element structure is arranged inside the second filter screen, and the second filter element structure is arranged inside the first filter screen.

[0011] Furthermore, the sealing mechanism includes a first pressing plate, a second pressing plate, a plurality of sealing and pressing components and a plurality of second sealing rings. The first pressing plate is fixedly connected to the protective sleeve, the second pressing plate is fixedly connected to the connecting sleeve, and the plurality of second sealing rings are arranged between the first pressing plate and the second pressing plate. The flange plate is located between the first pressing plate and the second pressing plate, and the plurality of second sealing rings are arranged in a row on the outside of the flange plate. The plurality of sealing and pressing components are arranged in a circumferentially uniform manner, and each sealing and pressing component is used to lock and press the first pressing plate and the second pressing plate.

[0012] Furthermore, the sealing mechanism further includes an annular sealing rubber ring. The cross section of the annular sealing rubber ring is L-shaped. The annular sealing rubber ring is arranged at the position where the flange plate is connected to the first filter screen, and the annular sealing rubber ring is used to seal the gap between the first filter screen and the protective sleeve.

[0013] Furthermore, each sealing and pressing component includes a locking screw, a limit nut, a locking nut and a pressing spring. The locking screw penetrates through the first pressing plate and the second pressing plate. The limit nut and the locking nut are symmetrically arranged on the locking screw. One end of the pressing spring abuts against the locking nut, and the other end of the pressing spring abuts against the first pressing plate.

[0014] Furthermore, the number of the sealing and pressing components is 4.

[0015] Compared with the prior art, the filter structure for a high-pressure nozzle of the present utility model has the following advantages:

[0016] 1. The filter screen structure adopts a detachable modular design. Parts such as the first filter screen, the second filter screen, the sealing component and the fixed sleeve can be disassembled by means of threaded connection or flange plate connection. When it is necessary to replace or clean the filter element, each component can be easily separated without disassembling the entire device on a large scale, which greatly improves the maintenance efficiency. In this structure, the first filter screen and the second filter screen are used. The two filter layers can filter impurities of different sizes respectively, enhancing the overall filtering effect. Moreover, since the two filter screens are detachable, it is also convenient for users to replace different filter screens according to needs during actual operation, further enhancing the flexibility of the system.

[0017] 2. The sealing mechanism adopts a multi - layer sealing design, including the combination of multiple sealing rings and annular sealing rubber rings. This multi - level sealing structure can effectively prevent water leakage, ensure that the system still has good sealing performance under high - pressure environment, and avoid efficiency reduction or equipment damage caused by leakage. The pressing components in the sealing mechanism, such as locking screws, limit nuts, locking nuts and pressing springs, provide a strong pressing force to ensure that the sealing rings and sealing rubber rings are always in the proper position, further improving the reliability of the seal. This design is particularly important under high - pressure working conditions and can prevent leakage caused by seal failure. The sealing mechanism is convenient for disassembly and assembly. The design of the locking screw and the sealing pressing components enables quick loosening and re - locking when it is necessary to replace the sealing ring or clean the sealing components, reducing the maintenance time and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings forming a part of this utility model are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation to the utility model. In the drawings:

[0019] Figure 1 It is a schematic diagram of a filtering structure for a high - pressure nozzle according to an embodiment of this utility model;

[0020] Figure 2 It is a schematic diagram of the sealing pressing component according to an embodiment of this utility model;

[0021] Figure 3 It is a schematic diagram of the filter screen structure according to an embodiment of this utility model;

[0022] Figure 4 It is a schematic diagram of the filter element assembly structure according to an embodiment of this utility model;

[0023] Figure 5 It is a schematic diagram of the second filter element structure according to an embodiment of this utility model.

[0024] Description of the reference numerals:

[0025] 101, protective sleeve; 102, threaded sleeve; 103, first pressing plate; 104, screwing structure; 201, connecting sleeve; 202, second pressing plate; 301, locking screw; 302, limit nut; 303, locking nut; 304, pressing spring; 305, annular sealing rubber ring; 401, second filter screen; 402, sealing sleeve; 403, first sealing ring; 501, first filter screen; 502, flange plate; 503, fixed sleeve; 601, first filter element structure; 602, fixing plate; 603, second filter element structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0029] The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0030] A filter structure for a high-pressure nozzle, as Figure 1 shown, includes a protective sleeve 101, a screwing structure 104, a sealing mechanism, a filter mesh structure, a filter element assembly, and a connecting sleeve 201 for connecting to a high-pressure nozzle; the filter mesh structure and the filter element assembly are both arranged inside the protective sleeve 101; one end of the protective sleeve 101 is provided with a threaded sleeve 102 for connecting to a water inlet pipe, the other end of the protective sleeve 101 is connected to the connecting sleeve 201 through the sealing mechanism, and the screwing structure 104 is arranged on the outer wall of the protective sleeve 101;

[0031] As Figure 3As shown in the figure, the filter screen structure includes a first filter screen 501, a second filter screen 401, a sealing component and a fixed sleeve 503. One end of the first filter screen 501 is detachably connected to the sealing mechanism through a flange plate 502, and the other end of the first filter screen 501 is detachably connected to the filter element assembly through the fixed sleeve 503. The end of the second filter screen 401 is detachably connected to the first filter screen 501 through the sealing component, and the sealing component is used to seal the gap between the second filter screen 401 and the protective sleeve 101. The filter screen structure adopts a detachable modular design, and parts such as the first filter screen 501, the second filter screen 401, the sealing component and the fixed sleeve 503 can be disassembled by means of threaded connection or connection through the flange plate 502. When it is necessary to replace or clean the filter element, the components can be easily separated without a large-scale disassembly of the entire device, which greatly improves the maintenance efficiency. The first filter screen 501 and the second filter screen 401 are used in this structure, and the two filter layers can filter impurities of different sizes respectively, enhancing the overall filtering effect. Moreover, since the two filter screens are detachable, it is also convenient for users to replace different filter screens according to needs during actual operation, further enhancing the flexibility of the system.

[0032] The sealing component includes a sealing sleeve 402 and a first sealing ring 403. The first sealing ring 403 is arranged on the outer side of the sealing sleeve 402. The end of the sealing sleeve 402 is fixedly connected to the second filter screen 401, and the inner side of the sealing sleeve 402 is threadedly connected to the end of the first filter screen 501.

[0033] As Figure 4-5 shown in the figure, the filter element assembly includes a first filter element structure 601, a second filter element structure 603 and a fixing plate 602. The first filter element structure 601 and the second filter element structure 603 are symmetrically arranged on both sides of the fixing plate 602. The fixing plate 602 is connected to the fixed sleeve 503 by screws. The first filter element structure 601 is arranged inside the second filter screen 401, and the second filter element structure 603 is arranged inside the first filter screen 501. In this example, the filter element structure is a synthetic fiber filter element.

[0034] As Figure 2 shown in the figure, the sealing mechanism includes a first pressing plate 103, a second pressing plate 202, a plurality of sealing and pressing components and a plurality of second sealing rings. The first pressing plate 103 is fixedly connected to the protective sleeve 101, the second pressing plate 202 is fixedly connected to the connecting sleeve 201. A plurality of second sealing rings are arranged between the first pressing plate 103 and the second pressing plate 202. The flange plate 502 is located between the first pressing plate 103 and the second pressing plate 202. A plurality of second sealing rings are arranged in a row on the outer side of the flange plate 502. A plurality of sealing and pressing components are arranged in a circumferentially uniform manner, and the sealing and pressing components are all used to lock and press the first pressing plate 103 and the second pressing plate 202. As Figure 3As shown, the sealing mechanism further includes an annular sealing rubber ring 305. The cross-section of the annular sealing rubber ring 305 is L-shaped. The annular sealing rubber ring 305 is arranged at the connection position between the flange plate 502 and the first filter screen 501. The annular sealing rubber ring 305 is used to seal the gap between the first filter screen 501 and the protective sleeve 101. The sealing mechanism adopts a multi-sealing design, including the combination of multiple sealing rings and the annular sealing rubber ring 305. This multi-level sealing structure can effectively prevent water leakage, ensure that the system still has good sealing performance under high-pressure environment, and avoid the reduction of efficiency or equipment damage caused by leakage. The pressing components in the sealing mechanism, such as the locking screw 301, the limit nut 302, the locking nut 303 and the pressing spring 304, provide a strong pressing force to ensure that the sealing rings and the sealing rubber ring are always in the appropriate positions, further improving the reliability of the seal. This design is particularly important under high-pressure working conditions and can prevent leakage caused by seal failure. The sealing mechanism has the convenience of disassembly and assembly. The design of the locking screw 301 and the seal pressing components enables quick loosening and re-locking when the sealing rings need to be replaced or the sealing components need to be cleaned, reducing the maintenance time and improving the work efficiency.

[0035] As Figure 2 As shown, the seal pressing components include a locking screw 301, a limit nut 302, a locking nut 303 and a pressing spring 304. The locking screw 301 passes through the first pressing plate 103 and the second pressing plate 202. The limit nut 302 and the locking nut 303 are symmetrically arranged on the locking screw 301. One end of the pressing spring 304 abuts against the locking nut 303, and the other end of the pressing spring 304 abuts against the first pressing plate 103. The number of the seal pressing components is 4.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, 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 filtering structure for a high-pressure nozzle, characterized in that: It includes a protective sleeve (101), a screwing structure (104), a sealing mechanism, a filter net structure, a filter element assembly, and a connecting sleeve (201) for connecting a high-pressure nozzle; Both the filter net structure and the filter element assembly are arranged inside the protective sleeve (101); One end of the protective sleeve (101) is provided with a threaded sleeve (102) for connecting a water inlet pipe. The other end of the protective sleeve (101) is connected to the connecting sleeve (201) through the sealing mechanism, and the screwing structure (104) is arranged on the outer wall of the protective sleeve (101); The filter net structure includes a first filter net (501), a second filter net (401), a sealing component, and a fixing sleeve (503). One end of the first filter net (501) is detachably connected to the sealing mechanism through a flange plate (502). The other end of the first filter net (501) is detachably connected to the filter element assembly through the fixing sleeve (503). The end of the second filter net (401) is detachably connected to the first filter net (501) through the sealing component, and the sealing component is used to seal the gap between the second filter net (401) and the protective sleeve (101).

2. The filtering structure for a high-pressure nozzle according to claim 1, wherein: The sealing component includes a sealing sleeve (402) and a first sealing ring (403). The first sealing ring (403) is arranged on the outer side of the sealing sleeve (402). The end of the sealing sleeve (402) is fixedly connected to the second filter net (401), and the inner side of the sealing sleeve (402) is threadedly connected to the end of the first filter net (501).

3. The filtering structure for a high-pressure nozzle according to claim 1, characterized in that: The filter element assembly includes a first filter element structure (601), a second filter element structure (603), and a fixing plate (602). The first filter element structure (601) and the second filter element structure (603) are symmetrically arranged on both sides of the fixing plate (602). The fixing plate (602) is connected to the fixing sleeve (503) by screws. The first filter element structure (601) is arranged inside the second filter net (401), and the second filter element structure (603) is arranged inside the first filter net (501).

4. A filtering structure for a high-pressure nozzle according to any one of claims 1-3, characterized in that: The sealing mechanism includes a first pressing plate (103), a second pressing plate (202), a plurality of sealing and pressing components, and a plurality of second sealing rings. The first pressing plate (103) is fixedly connected to the protective sleeve (101). The second pressing plate (202) is fixedly connected to the connecting sleeve (201). A plurality of the second sealing rings are arranged between the first pressing plate (103) and the second pressing plate (202). The flange plate (502) is located between the first pressing plate (103) and the second pressing plate (202). A plurality of the second sealing rings are arranged in a row on the outer side of the flange plate (502). A plurality of the sealing and pressing components are evenly arranged in a circle, and each of the sealing and pressing components is used to lock and press the first pressing plate (103) and the second pressing plate (202).

5. A filtering structure for a high-pressure nozzle according to claim 4, characterized in that: The sealing mechanism further includes an annular sealing rubber ring (305). The cross-section of the annular sealing rubber ring (305) is L-shaped. The annular sealing rubber ring (305) is arranged at the connection position between the flange plate (502) and the first filter screen (501). The annular sealing rubber ring (305) is used to seal the gap between the first filter screen (501) and the protective sleeve (101).

6. The filtering structure for a high-pressure nozzle according to claim 4, characterized in that: The sealing and pressing assembly includes a locking screw (301), a limit nut (302), a locking nut (303) and a pressing spring (304). The locking screw (301) passes through the first pressing plate (103) and the second pressing plate (202). The limit nut (302) and the locking nut (303) are symmetrically arranged on the locking screw (301). One end of the pressing spring (304) abuts against the locking nut (303), and the other end of the pressing spring (304) abuts against the first pressing plate (103).

7. The filtering structure for a high-pressure nozzle according to claim 4, characterized in that: The number of the sealing and pressing assemblies is four.

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