Stainless steel nozzle body

Abstract

The utility model relates to the technical field of fire-fighting sprayers, in particular to a stainless steel sprayer body, which comprises a connecting pipe, a base, a frame and a mounting seat which are sequentially arranged from bottom to top, and is characterized in that a flow channel is formed in the sprayer body; the inner diameter of at least part of the runner is reduced in sequence; the flow channel is composed of a confluence section, a first rectification section, a second rectification section and an advection section which are arranged in sequence, the first rectification section and the second rectification section are both gradually-shrinking sections, and the confluence section is longer than the first rectification section, the second rectification section and the advection section; after water enters the spray head body, the stability and the uniformity of the water can be improved, meanwhile, a proper flow velocity can be obtained, and the problem that the water consumption of the spray head in the prior art is too large is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire sprinkler heads, and specifically relates to a stainless steel sprinkler head body. Background Art

[0002] Sprinklers are divided into two types: closed type and open type. Closed glass ball sprinkler is the most important component of wet automatic sprinkler fire extinguishing system, which can play the dual functions of fire detection and fire extinguishing.

[0003] Commonly used nozzles are composed of glass balls, nozzle bodies, impact atomizing plates and other parts, such as Figure 3 The figure shows a schematic diagram of the lower cross-section of an existing nozzle body. The lower water inlet 51 of the nozzle body 5 is trumpet-shaped. Specifically, the water inlet 51 consists of two horizontal flow sections and a tapered section between the two horizontal flow sections. The length of the tapered section is greater than the length of the two horizontal flow sections. Due to the rectifying effect of the tapered section, water produces a compression effect when passing through the tapered section, and the speed of the water increases continuously. Since the rectifying process of the tapered section is too long, when the municipal water pipe has sufficient water supply, the water flow velocity in the nozzle flow channel is too fast, so that the nozzle consumes too much water when spraying water, which is not conducive to the rational use of water resources. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a stainless steel nozzle body, which can improve the stability and uniformity of water after entering the nozzle body, and at the same time, the water can also obtain a suitable flow rate, thereby solving the problem of excessive water consumption of the nozzle in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stainless steel nozzle body, comprising a connecting pipe, a base, a frame and a mounting seat arranged in sequence from bottom to top, characterized in that: a flow channel is opened in the nozzle body; the inner diameter of at least part of the flow channel decreases in sequence; the flow channel is composed of a converging section, a first rectifying section, a second rectifying section and a horizontal flow section arranged in sequence, wherein the first rectifying section and the second rectifying section are both tapered sections, and the length of the converging section is greater than the lengths of the first rectifying section, the second rectifying section and the horizontal flow section.

[0006] Preferably, the inner diameter of the converging section is larger than the inner diameter of the first rectifying section, the inner diameter of the first rectifying section is not smaller than the inner diameter of the second rectifying section, and the inner diameter of the second rectifying section is not smaller than the inner diameter of the flat flow section.

[0007] Preferably, the inclination of the first rectifying section is greater than the inclination of the second rectifying section.

[0008] Preferably, the length of the first rectifying section is equal to the length of the second rectifying section.

[0009] Preferably, the flow channel further includes a transition section; the transition section is arranged between the confluence section and the first rectifying section.

[0010] Preferably, the transition section has an arc-shaped structure.

[0011] Preferably, the transition section is tangent to both the converging section and the first rectifying section.

[0012] Preferably, the flow channel further includes a nozzle section; the nozzle section is connected to the advection section.

[0013] Preferably, the inner diameter of the nozzle section is larger than the inner diameter of the advection section.

[0014] Preferably, the nozzle body is an integrally formed structure.

[0015] Compared with the prior art, the beneficial effect of the utility model is: by opening a flow channel consisting of a confluence section, a transition section, a first straightening section, a second straightening section, and a horizontal flow section in the nozzle body, wherein the length of the confluence section is greater than the length of the transition section, the first straightening section, the second straightening section, and the horizontal flow section, and the inclination of the first straightening section is greater than the inclination of the second straightening section, so that the stability and uniformity of water after entering the nozzle body can be improved, and at the same time, the water can also obtain a suitable flow rate, which solves the problem of excessive water consumption of the nozzle in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the cross section of the nozzle body of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the nozzle body of the utility model;

[0018] Figure 3 It is a schematic diagram of a partial cross section of an existing nozzle.

[0019] In the figure: 1 connecting pipe, 2 base, 3 frame, 4 mounting seat, 5 existing nozzle, 11 confluence section, 12 transition section, 13 first rectifying section, 14 second rectifying section, 15 horizontal flow section, 16 nozzle section, 51 water inlet. DETAILED DESCRIPTION

[0020] The following describes the specific implementation of the utility model in detail in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand how to practice the utility model. Although the utility model is described in conjunction with its preferred specific embodiments, these embodiments are only illustrative, rather than limiting the scope of the utility model.

[0021] Specific embodiment 1: Please refer to Figure 1-2A stainless steel nozzle body comprises: a connecting pipe 1, a base 2, a frame 3 and a mounting seat 4 which are arranged in sequence from bottom to top. When in use, the connecting pipe 1 is connected to the municipal water supply pipeline, the sealing element of the nozzle is encapsulated on the base 2 to close the water outlet end of the connecting pipe 1, and the mounting seat 4 is used to install an impact atomization plate; the nozzle body is also provided with a flow channel, which runs through the connecting pipe 1 and the base 2.

[0022] In order to ensure the rigidity of the structure, the nozzle body is an integrally formed structure of stainless steel.

[0023] The flow channel consists of a confluence section 11, a transition section 12, a first straightening section 13, a second straightening section 14, a horizontal flow section 15 and a nozzle section 16. Specifically, in the direction from water inlet to water outlet, the confluence section 11, the transition section 12, the first straightening section 13, the second straightening section 14, the horizontal flow section 15 and the nozzle section 16 are arranged in sequence.

[0024] Among them, the length of the confluence section 11 is greater than the length of the remaining sections. It can be understood that the confluence section 11 occupies most of the connecting pipe 1. One of the purposes of the confluence section 11 is to gather water from the municipal pipeline so that the water can be initially gathered after entering the nozzle body. It can not only solve the problem of insufficient water supply, but also preliminarily integrate the water supply in the municipal pipeline. In addition, compared with the existing nozzle body, the setting of the confluence section 11 can also reduce the wall thickness of the connecting pipe 1, save the material of the nozzle body, and reduce the production cost.

[0025] The transition section 12 is arranged between the converging section 11 and the first rectifying section 13. The inner diameter of the transition section 12 is an arc-shaped structure, and the transition section 12 is tangent to the converging section 11 and the first rectifying section 13 to reduce the flow energy loss caused by the sudden change of shape of adjacent flow sections.

[0026] Furthermore, in the direction from water inlet to water outlet, the first straightening section 13 and the second straightening section 14 are both trumpet-shaped structures with an inlet diameter larger than an outlet diameter. At the same time, in order to achieve the effect of segmented straightening, the tapering inclination of the first straightening section 13 is greater than the tapering inclination of the second straightening section 14, and the water flow passing through the first straightening section 13 and the second straightening section 14 will be continuously compressed and accelerated; in order to better control the straightening effect, the lengths of the first straightening section 13 and the second straightening section 14 are equal.

[0027] In this embodiment, the diameter of the flat flow section 15 is equal to the diameter of the second straightening section 14 connected thereto, and the diameter of the nozzle section 16 is larger than the diameter of the flat flow section 15 .

[0028] The present application adopts a multi-stage segmented rectification. When the water flow enters the confluence section 11 for initial integration and convergence, it enters the first rectification section 13 through the transition section 12. Since the first rectification section 13 is a trumpet-shaped tapered tube, the water flow is continuously compressed and accelerated as the inner diameter of the first rectification section 13 continuously decreases, thereby realizing secondary rectification; then the water flow enters the second rectification section 14, and the pressurized water flow is compressed and accelerated again by the second rectification section 14, thereby realizing another rectification; finally, when the water flow passes through the horizontal flow section 15, since the inner diameter of the horizontal flow section 15 remains unchanged, the horizontal flow section 15 integrates the flow velocity and direction of the water flow, and a stable and uniform fluid can be obtained when the integrated water flow flows out of the nozzle section 16. Through the multi-stage segmented rectification of the confluence section 11, transition section 12, first rectifying section 13, second rectifying section 14 and horizontal flow section 15, the flow stability and uniformity of the water flow are improved to the greatest extent within a shorter flow channel distance, which not only can achieve a higher spraying effect, but also ensures that the water flow velocity in the nozzle will not be too large, which is conducive to the rational use of water resources.

[0029] Through the technical solution, a flow channel consisting of a confluence section, a transition section, a first straightening section, a second straightening section, and a horizontal flow section is opened in the nozzle body, wherein the length of the confluence section is greater than the length of the transition section, the first straightening section, the second straightening section, and the horizontal flow section, and the inclination of the first straightening section is greater than the inclination of the second straightening section, so that the stability and uniformity of water after entering the nozzle body can be improved, and at the same time, the water can also obtain a suitable flow rate, thereby solving the problem of excessive water consumption of the nozzle in the prior art.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stainless steel nozzle body, comprising a connecting pipe (1), a base (2), a frame (3) and a mounting seat (4) arranged in order from bottom to top, characterized in that: A flow channel is provided in the nozzle body; the inner diameter of at least part of the flow channel decreases in sequence; the flow channel is composed of a converging section (11), a first rectifying section (13), a second rectifying section (14) and a horizontal flow section (15) which are arranged in sequence, wherein the first rectifying section (13) and the second rectifying section (14) are both tapered sections, and the length of the converging section (11) is greater than the lengths of the first rectifying section (13), the second rectifying section (14) and the horizontal flow section (15).

2. A stainless steel nozzle body according to claim 1, characterized in that: The inner diameter of the converging section (11) is larger than the inner diameter of the first rectifying section (13), the inner diameter of the first rectifying section (13) is not smaller than the inner diameter of the second rectifying section (14), and the inner diameter of the second rectifying section (14) is not smaller than the inner diameter of the flat flow section (15).

3. A stainless steel nozzle body according to claim 1 or 2, characterized in that: The inclination of the first rectifying section (13) is greater than the inclination of the second rectifying section (14).

4. A stainless steel nozzle body according to claim 1 or 2, characterized in that: The length of the first rectifying section (13) is equal to the length of the second rectifying section (14).

5. The stainless steel nozzle body according to claim 1, characterized in that: The flow channel further comprises a transition section (12); the transition section (12) is arranged between the converging section (11) and the first rectifying section (13).

6. A stainless steel nozzle body according to claim 5, characterized in that: The transition section (12) has an arc-shaped structure.

7. A stainless steel nozzle body according to claim 5, characterized in that: The transition section (12) is tangent to both the converging section (11) and the first rectifying section (13).

8. The stainless steel nozzle body according to claim 1, characterized in that: The flow channel further comprises a nozzle section (16); the nozzle section (16) is connected to the advection section (15).

9. A stainless steel nozzle body according to claim 8, characterized in that: The inner diameter of the nozzle section (16) is greater than the inner diameter of the advection section (15).

10. The stainless steel nozzle body according to claim 1, characterized in that: The nozzle body is an integrally formed structure.

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