Spray head body and liquid spraying equipment

Abstract

The utility model provides a nozzle body and liquid spraying equipment, and relates to the field of fire-fighting equipment. The nozzle body comprises a spraying piece and a connecting piece, and the spraying piece is connected to the liquid conveying pipeline through the connecting piece; a containing cavity is formed in the jetting piece and at least used for containing a fire extinguishing agent. The spraying piece is further provided with at least one opening, and the opening communicates with the containing cavity. The spraying piece is provided with a one-way control piece which is arranged at the opening; when the one-way control piece is in the first state, the one-way control piece seals the opening, and when the one-way control piece is in the second state, the one-way control piece opens the opening, and the fire extinguishing agent is discharged out of the containing cavity through the opening. The problem that normal use of the nozzle body is affected due to the fact that the liquid spraying channel of the nozzle body is prone to blockage can be solved.

Description

Technical Field

[0001] The present application relates to the field of fire-fighting facilities, and in particular to a nozzle body and a liquid spraying device. Background Art

[0002] Firefighting is an important guarantee for life and industrial production. For example, liquid spraying equipment is a common firefighting facility. Liquid spraying equipment can spray liquid fire extinguishing agent through the nozzle body to quickly reduce the temperature of the burning object through the liquid fire extinguishing agent, thereby extinguishing the open flame of the burning object. However, the liquid spraying passage of the nozzle body is prone to blockage, which affects the normal use of the nozzle body. Utility Model Content

[0003] The embodiments of the present application provide a nozzle body and a liquid spraying device to solve the problem that the liquid spraying passage of the nozzle body is easily clogged, thereby affecting the normal use of the nozzle body.

[0004] The nozzle body provided in the embodiment of the present application includes an injection member and a connecting member, wherein the injection member is connected to a liquid delivery pipeline through the connecting member;

[0005] The injection member is formed with a receiving cavity, and the receiving cavity is at least used to receive the fire extinguishing agent; the injection member is also provided with at least one opening, and the opening is connected to the receiving cavity;

[0006] The injection member is provided with a one-way control member, and the one-way control member is arranged at the opening; when the one-way control member is in a first state, the one-way control member closes the opening, and when the one-way control member is in a second state, the one-way control member opens the opening, and the accommodating chamber discharges the fire extinguishing agent through the opening.

[0007] By adopting the above technical solution, when the liquid spraying device sprays liquid fire extinguishing agent through the nozzle body, the fire extinguishing agent in the liquid delivery pipeline is passed into the receiving cavity of the spraying member through the connecting member; then the fire extinguishing agent pushes the one-way control member to open the opening, so that the fire extinguishing agent in the receiving cavity can be discharged from the receiving cavity through the opening, and the one-way control member is in the second state;

[0008] When the discharge of the fire extinguishing agent stops, the one-way control member switches from the second state to the first state, and the one-way control member closes the opening to intercept external impurities through the one-way control member, thereby reducing the possibility of external impurities or fire extinguishing agent blocking the opening and ensuring the normal use of the nozzle body.

[0009] In some possible implementations, the one-way control member may be movably disposed on the injection member;

[0010] When the one-way control member is in the first state, the one-way control member abuts against the inner wall of the opening, and the first surface of the one-way control member faces the accommodating cavity;

[0011] When the one-way control member is in the second state, the one-way control member is located outside the accommodating cavity, and the first surface of the one-way control member is used to guide the fire extinguishing agent from the accommodating cavity.

[0012] In some possible implementations, the injection member includes a mounting portion and an injection portion connected to each other, the mounting portion and the injection portion are arranged along a first direction, and the injection portion is connected to the connecting member through the mounting portion;

[0013] Taking a plane perpendicular to the first direction as a cross section, the cross-sectional area of ​​the injection portion gradually decreases in a direction away from the mounting portion, and the injection portion forms the opening.

[0014] In some possible implementations, the number of the openings is set to be multiple, and the multiple openings are evenly arranged on the injection portion around the first direction.

[0015] In some possible implementations, an angle between the injection portion and the first direction is greater than or equal to 20 degrees and less than or equal to 60 degrees.

[0016] In some possible implementations, the connecting member includes a connecting portion, the connecting portion is formed with a communicating hole, a first end of the communicating hole is used to communicate with the infusion pipeline, and a second end of the communicating hole is connected with the accommodating cavity;

[0017] At least a portion of the connecting portion is disposed in the accommodating cavity, and the connecting portion is detachably connected to the injection member.

[0018] In some possible implementations, the connecting portion is provided with an external thread, the injection piece is provided with an internal thread, and the connecting portion is threadedly connected to the injection piece.

[0019] In some possible implementations, the connector further includes a pressing plate, which is disposed on a surface of the connecting portion facing away from the accommodating cavity, and the surface of the pressing plate facing away from the connecting portion is used to connect the infusion pipeline.

[0020] In some possible implementations, the connecting member further includes a gasket, a first surface of the gasket is connected to the pressing plate, and a second surface of the gasket is connected to the connecting portion;

[0021] And / or, the connecting member further includes at least one locking structure, the locking structure is penetrated through the pressing plate and the connecting portion, and the pressing plate is connected to the connecting portion via the locking structure.

[0022] The embodiment of the present application also provides a liquid spraying device, including the above-mentioned nozzle body.

[0023] Since the liquid spraying device includes the above-mentioned nozzle body, the advantages of the liquid spraying device including the above-mentioned nozzle body can be specifically referred to the above-mentioned related description, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0025] Figure 1 A schematic diagram of the structure of the nozzle body provided in the embodiment of the present application;

[0026] Figure 2 A schematic structural diagram of a nozzle body from another perspective provided in an embodiment of the present application;

[0027] Figure 3 A schematic diagram of the structure of the injection member provided in the embodiment of the present application;

[0028] Figure 4 A schematic diagram of the structure of a connector provided in an embodiment of the present application;

[0029] Figure 5 A schematic diagram for showing the maximum spray angle of a nozzle body provided in an embodiment of the present application;

[0030] Figure 6 A schematic structural diagram of the nozzle body from another perspective provided in an embodiment of the present application.

[0031] Description of reference numerals:

[0032] 100. Injection parts;

[0033] 110, injection part; 120, mounting part; 130, accommodating chamber; 140, opening; 150, one-way control member;

[0034] 200, connector;

[0035] 210, connecting portion; 211, communicating hole; 220, pressing plate; 230, gasket; 240, locking structure.

[0036] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0037] As described in the background art, the liquid spraying device can spray liquid fire extinguishing agent through the nozzle body to quickly reduce the temperature of the burning object through the liquid fire extinguishing agent, thereby extinguishing the open flame of the burning object. However, since the liquid spraying passage of the nozzle body is usually exposed to the environment, external impurities are easy to enter the liquid spraying passage of the nozzle body, making the liquid spraying passage of the nozzle body easy to be blocked, thereby affecting the normal use of the nozzle body.

[0038] For example, commonly used foam fire extinguishing agents generally do not cause blockage in the liquid spray passage, while water-based fire extinguishing agents may cause blockage in the liquid spray passage at low temperatures. When the fire extinguishing agent is set to liquid nitrogen, the temperature of the liquid nitrogen itself is relatively low. When liquid nitrogen and a liquid mixture containing liquid nitrogen are sprayed, they will not block the liquid spray passage of the nozzle body due to their own low water content. However, once the spraying is stopped, water may condense and crystallize in the liquid spray passage, thereby blocking the liquid spray passage of the nozzle body.

[0039] In order to solve the above technical problems, the embodiment of the present application provides a nozzle body and a liquid spraying device. When the liquid spraying device sprays liquid fire extinguishing agent through the nozzle body, the fire extinguishing agent in the liquid delivery pipeline is passed into the receiving cavity of the spraying member through the connecting member; then the fire extinguishing agent pushes the one-way control member to open the opening, so that the fire extinguishing agent in the receiving cavity can be discharged from the receiving cavity through the opening, and the one-way control member is in the second state;

[0040] When the discharge of the fire extinguishing agent stops, the one-way control component switches from the second state to the first state, and the one-way control component closes the opening to intercept external impurities through the one-way control component, thereby reducing the possibility of external impurities or fire extinguishing agent clogging the opening, thereby reducing the possibility of external impurities or fire extinguishing agent clogging the liquid spraying passage of the nozzle body, thereby ensuring the normal use of the nozzle body.

[0041] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0042] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0043] Reference Figure 1 and Figure 2The embodiment of the present application provides a nozzle body, including an injection member 100 and a connecting member 200, wherein the injection member 100 is connected to a liquid delivery pipeline through the connecting member 200. Figure 3 The injection member 100 may be formed with a receiving chamber 130, and the receiving chamber 130 may at least be used to accommodate the fire extinguishing agent.

[0044] The injection member 100 may also be provided with at least one opening 140, which is connected to the accommodating chamber 130 so that the fire extinguishing agent from the liquid delivery pipeline can be discharged through the accommodating chamber 130 and the opening 140. The liquid delivery pipeline, the accommodating chamber 130 and the opening 140 can all be used to form a liquid spraying channel.

[0045] Exemplarily, the injection member 100 may be provided with a one-way control member 150, which is provided at the opening 140. When the one-way control member 150 is in a first state, the one-way control member 150 closes the opening 140, so as to intercept external impurities through the one-way control member 150, thereby reducing the possibility of external impurities entering the opening 140. When the one-way control member 150 is in a second state, the one-way control member 150 opens the opening 140, and the accommodating chamber 130 discharges the fire extinguishing agent through the opening 140.

[0046] The fire extinguishing agent can be set as a liquid fire extinguishing agent, and the liquid fire extinguishing agent can be set as liquid nitrogen, water or other liquids and mixtures thereof. Alternatively, the fire extinguishing agent can also be set as a gaseous fire extinguishing agent, and the present application embodiment does not make further restrictions on this.

[0047] Reference Figure 3 In some possible implementations, the injection member 100 may include a mounting portion 120 and an injection portion 110 connected to each other. The mounting portion 120 and the injection portion 110 may be arranged along a first direction, and the injection portion 110 may be connected to the connector 200 through the mounting portion 120 .

[0048] Taking the plane perpendicular to the first direction as the cross-section, the cross-sectional area of ​​the injection portion 110 can gradually decrease in the direction away from the mounting portion 120, and the injection portion 110 can form an opening 140 so that the fire extinguishing agent moves from the mounting portion 120 toward the injection portion 110, thereby increasing the flow speed of the fire extinguishing agent through the injection portion 110.

[0049] Exemplarily, the injection portion 110 may be provided as a truncated cone-shaped injection portion 110. The rotation axis of the truncated cone-shaped injection portion 110 may be coaxially arranged in the first direction, the first end surface of the truncated cone-shaped injection portion 110 is connected to the mounting portion 120, and the second end surface of the truncated cone-shaped injection portion 110 is away from the mounting portion 120. The second end surface of the truncated cone-shaped injection portion 110 is coaxially arranged on the first end surface of the truncated cone-shaped injection portion 110.

[0050] In the first direction, the opening 140 may be tangent to the first end surface of the truncated cone-shaped injection portion 110. The opening 140 may also be tangent to the second end surface of the truncated cone-shaped injection portion 110 to increase the area of ​​the opening 140 and increase the flow rate of the fire extinguishing agent. The extension direction of the opening 140 may be perpendicular to the truncated cone-shaped injection portion 110, so that the flow direction of the fire extinguishing agent is perpendicular to the truncated cone-shaped injection portion 110.

[0051] The number of openings 140 can be set to be multiple. Multiple openings 140 can be set on the injection part 110 around the first direction, and multiple openings 140 can be evenly set on the injection part 110, so that the fire extinguishing agent in the accommodating cavity 130 can be discharged toward different angles through the multiple openings 140, thereby increasing the fire extinguishing angle of the fire extinguishing agent.

[0052] Reference Figure 5 and Figure 6 In the plurality of openings 140 , two adjacent openings 140 may be arranged at intervals. Alternatively, in the plurality of openings 140 , two adjacent openings 140 may be arranged tangentially to increase the number of openings 140 and increase the angle at which the accommodating chamber 130 discharges the fire extinguishing agent through the plurality of openings 140 .

[0053] For example, the angle a between the injection portion 110 and the first direction may be greater than or equal to 20 degrees and less than or equal to 60 degrees. For example, the angle a between the injection portion 110 and the first direction may be set within any angle range of 20 degrees to 30 degrees, 30 degrees to 40 degrees, 40 degrees to 50 degrees, and 50 degrees to 60 degrees.

[0054] The maximum spray angle b of the nozzle body may be equal to the supplementary angle of twice the angle between the spray portion 110 and the first direction, that is, the maximum spray angle of the nozzle body may be greater than or equal to 40 degrees and less than or equal to 140 degrees.

[0055] For example, the maximum spray angle of the nozzle body can be set within any spray angle range of 40 degrees to 60 degrees, 60 degrees to 80 degrees, 80 degrees to 100 degrees, 100 degrees to 120 degrees, and 120 degrees to 140 degrees.

[0056] It is easy to understand that the maximum spray angle of the nozzle body can be determined according to the orientation of the opening 140. For example, among the multiple openings 140, the extension directions of two openings 140 can be located in the same plane. The included angle of the extension directions of the two openings 140 located in the same plane is equal to the maximum spray angle of the nozzle body. When the maximum spray angle of the nozzle body is larger, the area covered by the fire extinguishing agent sprayed from the nozzle body is larger.

[0057] The mounting portion 120 and the injection portion 110 may be integrally provided to make the structure of the injection member 100 more stable. At least one of the mounting portion 120 and the injection portion 110 may be made of a corrosion-resistant material to extend the service life of the injection member 100.

[0058] Alternatively, the inner wall of the accommodating cavity 130 may be provided with a corrosion-resistant layer, which can isolate the fire extinguishing agent and reduce the possibility of the fire extinguishing agent directly contacting the mounting portion 120 and the injection portion 110. The material and thickness of the corrosion-resistant layer can be determined according to the material of the fire extinguishing agent.

[0059] Reference Figure 3 In some possible implementations, the one-way control member 150 may be movably disposed on the injection member 100. For example, the one-way control member 150 may be rotatably disposed on the injection member 100 to close or open the opening 140 of the injection member 100. Alternatively, the one-way control member 150 may also be movably disposed on the injection member 100 to close or open the opening 140 of the injection member 100.

[0060] When the one-way control member 150 is in the first state, the one-way control member 150 may abut against the inner wall of the opening 140 , and the first surface of the one-way control member 150 may face the accommodating cavity 130 , thereby closing the opening 140 through the one-way control member 150 .

[0061] When the one-way control member 150 is in the second state, the one-way control member 150 is located outside the accommodating chamber 130, and the first surface of the one-way control member 150 is used to guide the fire extinguishing agent from the accommodating chamber 130, so that the fire extinguishing agent in the accommodating chamber 130 can flow along the inner wall of the opening 140 to the first surface of the one-way control member 150.

[0062] The first surface of the one-way control member 150 plays a certain guiding role, so as to guide the fire extinguishing agent through the first surface of the one-way control member 150, so that the direction of the fire extinguishing agent can be changed through the guide control member.

[0063] The number of the one-way control members 150 can be set to be multiple, and the multiple one-way control members 150 can be set in a one-to-one correspondence with the multiple openings 140, and each one-way control member 150 is set in the corresponding opening 140.

[0064] Exemplarily, when the one-way control member 150 is in the first state, the first surface of the one-way control member 150 can be flush with the inner wall of the accommodating cavity 130 , or the first surface of the one-way control member 150 can also protrude from the inner wall of the accommodating cavity 130 .

[0065] And / or, when the one-way control member 150 is in the first state, the second surface of the one-way control member 150 can be flush with the outer surface of the injection member 100, or the second surface of the one-way control member 150 can also be protruded from the outer surface of the injection member 100, thereby reducing the possibility of the fire extinguishing agent being blocked in the opening 140.

[0066] Exemplarily, the one-way control member 150 can be configured as a one-way valve. The fire extinguishing agent or other fluid in the accommodating chamber 130 can flow to the outside of the accommodating chamber 130 through the one-way valve, and the fluid outside the accommodating chamber 130 is intercepted by the one-way valve to close or open the opening 140 through the one-way valve.

[0067] Alternatively, the one-way control member 150 may also be configured as an elastic member. When the one-way control member 150 is in the first state, the elastic member fills the opening 140 and abuts against the inner wall of the opening 140 to close the opening 140 through the elastic member.

[0068] When the one-way control member 150 is in the second state, the fire extinguishing agent in the accommodating chamber 130 can contact the elastic member, and the fire extinguishing agent can drive the elastic member to deform, so that at least part of the elastic member is separated from the inner wall of the opening 140, so that the fire extinguishing agent can be discharged from between the elastic member and the inner wall of the opening 140 to the outside of the accommodating chamber 130.

[0069] It is easy to understand that the state of the one-way control member 150 can be changed by the volume of the fire extinguishing agent in the accommodating chamber 130. For example, when the volume of the fire extinguishing agent in the accommodating chamber 130 is large and the pressure in the accommodating chamber 130 is high, the fire extinguishing agent can push the one-way control member 150 to move, so that the one-way control member 150 can be switched from the first state to the second state, and the one-way control member 150 gradually opens the opening 140.

[0070] For example, when the pressure of the fire extinguishing agent in the accommodating chamber 130 is greater than 0.2 MPa, the fire extinguishing agent in the accommodating chamber 130 can push the one-way control member 150 to move, and the one-way control member 150 can be switched from the first state to the second state.

[0071] Reference Figure 3 and Figure 4 In some possible implementations, the mounting portion 120 may be relatively fixedly disposed on the connecting member 200. For example, the mounting portion 120 may be connected to the connecting member 200 by welding or bonding, or the mounting portion 120 may be integrally disposed on the connecting member 200, so that the connection between the injection member 100 and the connecting member 200 is more stable, and the possibility of the injection member 100 being separated from the connecting member 200 is reduced.

[0072] Alternatively, the mounting portion 120 may be detachably disposed on the connector 200. For example, the mounting portion 120 may be snap-fitted to the connector 200, or the mounting portion 120 may be threadedly connected to the connector 200, so that the injection member 100 can be detached from the connector 200, thereby making the cleaning process of the injection member 100 and the accommodating chamber 130 more convenient.

[0073] In some possible implementations, the connector 200 may include a connector portion 210, and the connector portion 210 may be formed with a communication hole 211. A first end of the communication hole 211 is used to connect to a liquid infusion pipeline, and a second end of the communication hole 211 is connected to the accommodating chamber 130, so that the fire extinguishing agent in the liquid infusion pipeline can flow into the accommodating chamber 130 through the communication hole 211, and can be discharged through the opening 140 of the injection member 100.

[0074] At least a portion of the connection portion 210 may be disposed in the accommodating cavity 130 , and the connection portion 210 and the injection member 100 may be detachably connected, so that the connection member 200 may be connected to the injection member 100 via the connection portion 210 , making the disassembly and assembly process of the injection member 100 more convenient.

[0075] Exemplarily, the connection portion 210 may be provided with an external thread, and the injection member 100 may be provided with an internal thread, and the connection portion 210 is threadedly connected to the injection member 100, so that the injection member 100 can be connected to or disconnected from the connection portion 210. The connection portion 210 may be inserted into the accommodating cavity 130, and the connecting hole 211 of the connection portion 210 faces the injection portion 110, so that the fire extinguishing agent from the connecting hole 211 can flow toward the multiple openings 140 of the injection portion 110.

[0076] Reference Figure 3 and Figure 4 In some possible implementations, in the connector 200, the connecting portion 210 may include a first portion and a second portion connected to each other. The first portion of the connecting portion 210 may be disposed in the accommodating cavity 130, and the first portion of the connecting portion 210 may be provided with an external thread.

[0077] The first part of the connection part 210 and the second part of the connection part 210 can be arranged along the first direction, and the second part of the connection part 210 is arranged on the side of the first part of the connection part 210 away from the outlet 140. The second part of the connection part 210 can be used to connect the infusion pipeline.

[0078] The second portion of the connection portion 210 can be configured as a flange. The second portion of the connection portion 210 can be configured as a square plate, or a circular plate. The second portion of the connection portion 210 can be configured perpendicular to the first direction.

[0079] The connector 200 may further include a pressing plate 220. The pressing plate 220 may be disposed on a surface of the connecting portion 210 that is away from the accommodating chamber 130, and the surface of the pressing plate 220 that is away from the connecting portion 210 is used to connect the infusion pipeline. For example, the pressing plate 220 may be connected to the second portion of the connecting portion 210 to improve the stability of the spray head body.

[0080] The shape of the pressing plate 220 can be determined according to the shape of the connecting portion 210. For example, the shape of the pressing plate 220 can be set to be the same as the shape of the second portion of the connecting portion 210. The edge of the pressing plate 220 can be set flush with the edge of the second portion of the connecting portion 210, or the edge of the pressing plate 220 can also be close to the edge of the second portion of the connecting portion 210, and the distance between the edge of the pressing plate 220 and the edge of the second portion of the connecting portion 210 is small.

[0081] The connector 200 may further include a gasket 230. A first surface of the gasket 230 may be connected to the pressure plate 220, and a second surface of the gasket 230 may be connected to the second portion of the connecting portion 210. An edge of the gasket 230 may be flush with an edge of the second portion of the connecting portion 210, or an edge of the gasket 230 may be close to an edge of the second portion of the connecting portion 210, and a distance between the edge of the gasket 230 and the edge of the second portion of the connecting portion 210 is small.

[0082] And / or, the connector 200 may further include at least one locking structure 240, and the locking structure 240 is disposed through the pressing plate 220 and the connecting portion 210. The pressing plate 220 is connected to the connecting portion 210 through the locking structure 240, so that the structure of the connector 200 is more stable.

[0083] Exemplarily, the number of the locking structures 240 may be set to four, and the four locking structures 240 may be disposed at the corners of the pressing plate 220 to make the connection between the pressing plate 220 and the connecting portion 210 more stable.

[0084] In summary, when the liquid spraying device sprays liquid fire extinguishing agent through the nozzle body, the fire extinguishing agent in the liquid delivery pipeline passes through the connecting member 200 into the accommodating chamber 130 of the spraying member 100; then the fire extinguishing agent pushes the one-way control member 150 to open the opening 140, so that the fire extinguishing agent in the accommodating chamber 130 can be discharged from the accommodating chamber 130 through the opening 140, and the one-way control member 150 is in the second state;

[0085] When the discharge of the fire extinguishing agent stops, the one-way control component 150 switches from the second state to the first state, and the one-way control component 150 closes the opening 140 to intercept external impurities through the one-way control component 150, thereby reducing the possibility of external impurities or fire extinguishing agent blocking the opening 140, thereby reducing the possibility of external impurities or fire extinguishing agent blocking the liquid spraying passage of the nozzle body, thereby ensuring the normal use of the nozzle body.

[0086] The embodiment of the present application also provides a liquid spraying device, including the above-mentioned nozzle body.

[0087] Since the liquid spraying device includes the above-mentioned nozzle body, the advantages of the liquid spraying device including the above-mentioned nozzle body can be specifically referred to the above-mentioned related description, which will not be repeated here.

[0088] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0089] In the description of the present invention, it should be understood that the terms "including" and "having" and any variations thereof used herein are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0090] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected or indirectly connected through an intermediate medium, and it can make the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances. In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A nozzle body, characterized in that: It comprises an injection member and a connecting member, wherein the injection member is connected to the infusion pipeline through the connecting member; The injection member is formed with a receiving cavity, and the receiving cavity is at least used to receive the fire extinguishing agent; the injection member is also provided with at least one opening, and the opening is connected to the receiving cavity; The injection member is provided with a one-way control member, and the one-way control member is arranged at the opening; when the one-way control member is in a first state, the one-way control member closes the opening, and when the one-way control member is in a second state, the one-way control member opens the opening, and the accommodating chamber discharges the fire extinguishing agent through the opening.

2. The nozzle body according to claim 1, characterized in that: The one-way control member can be movably arranged on the injection member; When the one-way control member is in the first state, the one-way control member abuts against the inner wall of the opening, and the first surface of the one-way control member faces the accommodating cavity; When the one-way control member is in the second state, the one-way control member is located outside the accommodating cavity, and the first surface of the one-way control member is used to guide the fire extinguishing agent from the accommodating cavity.

3. The nozzle body according to claim 1, characterized in that: The injection member comprises a mounting portion and an injection portion connected to each other, the mounting portion and the injection portion are arranged along a first direction, and the injection portion is connected to the connecting member through the mounting portion; Taking a plane perpendicular to the first direction as a cross section, the cross-sectional area of ​​the injection portion gradually decreases in a direction away from the mounting portion, and the injection portion forms the opening.

4. The nozzle body according to claim 3, characterized in that: The number of the openings is set to be multiple, and the multiple openings are evenly arranged on the injection portion around the first direction.

5. The nozzle body according to claim 3, characterized in that: An included angle between the injection portion and the first direction is greater than or equal to 20 degrees and less than or equal to 60 degrees.

6. The nozzle body according to any one of claims 1 to 5, characterized in that: The connecting piece comprises a connecting portion, the connecting portion is formed with a communicating hole, a first end of the communicating hole is used to communicate with the infusion pipeline, and a second end of the communicating hole is connected with the accommodating cavity; At least a portion of the connecting portion is disposed in the accommodating cavity, and the connecting portion is detachably connected to the injection member.

7. The nozzle body according to claim 6, characterized in that: The connecting portion is provided with an external thread, the injection piece is provided with an internal thread, and the connecting portion is threadedly connected to the injection piece.

8. The nozzle body according to claim 6, characterized in that: The connector also includes a pressing plate, which is disposed on a surface of the connecting portion facing away from the accommodating cavity, and a surface of the pressing plate facing away from the connecting portion is used for connecting the infusion pipeline.

9. The nozzle body according to claim 8, characterized in that: The connecting member further comprises a gasket, a first surface of the gasket is connected to the pressing plate, and a second surface of the gasket is connected to the connecting portion; And / or, the connecting member further includes at least one locking structure, the locking structure is penetrated through the pressing plate and the connecting portion, and the pressing plate is connected to the connecting portion via the locking structure.

10. A liquid spraying device, characterized in that: Comprising a nozzle body as described in any one of claims 1-9.

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