Split type spray head

Abstract

The utility model discloses a split type spray head which comprises a flow channel, a head portion and a tail portion, the flow channel penetrates through the tail portion and the head portion, a butt joint portion is arranged at the end, facing the tail portion, of the head portion, an inner groove is formed in the end, facing the head portion, of the tail portion, the butt joint portion is inserted into the inner groove, and an installation groove is formed in the side, away from the head portion, of the inner groove. A mounting groove is formed in the tail part, a sleeve is inserted and matched in the mounting groove, a through hole is formed in the middle of the sleeve and communicated with the flow channel, the inner diameter of the through hole is the same as that of the flow channel, a filter screen is arranged in the middle of the through hole and used for filtering foreign matters in fluid in the flow channel, and a mounting part is arranged at one end, far away from the head part, of the tail part; according to the split type spray head, the head part and the tail part are arranged in a split mode and are easy to disassemble and assemble, the sleeve with the filter screen is inserted into the tail part, the sleeve can be easily taken out by separating the head part from the tail part, and foreign matters filtered and accumulated by the filter screen in the sleeve can be conveniently cleaned.

Description

TECHNICAL FIELD

[0001] The utility model relates to a nozzle technology, concretely is a split type nozzle. BACKGROUND

[0002] The combustion process of fossil fuels such as coal can emit a large amount of NOx pollutants, which is very dangerous. The current commonly used denitration means in industry can be divided into in-furnace denitration and out-furnace denitration, among which the selective catalytic reduction technology (SCR), the selective non-catalytic reduction technology (SNCR), and the combined technology of selective non-catalytic reduction and selective catalytic reduction (SNCR-SCR) are widely used. The SNCR denitration technology mainly uses a lance to spray a nitrogen-containing medicament into the combustion products containing NO at a temperature of about 982°C in the temperature range of 870-1200°C to generate a reduction reaction, remove NO, and generate nitrogen and water. The lance used in this process needs to be installed on the furnace wall at the top of the boiler, and the nozzle is inserted into the furnace 100 mm for spraying ammonia water solution or urea solution.

[0003] The ammonia water solution or urea solution may contain a small amount of foreign matter, such as urea particles, sand particles, and other substances. Long-term use of these foreign matters accumulated in the nozzle will cause the nozzle to be blocked. Therefore, the existing nozzle is provided with a filter screen to filter the foreign matter. However, the filter screen can only filter the foreign matter, and long-term use of the foreign matter will accumulate and block the filter screen. At this time, workers need to remove the nozzle to clean it. However, the filter screen is in the flow channel inside the nozzle, and the flow channel has a small inner diameter, so the cleaning speed is slow and the cleaning effect is poor. SUMMARY

[0004] To solve the defects of the prior art, the utility model provides a split type nozzle, which is split and easy to disassemble and assemble, and the filter screen can be taken out to facilitate the removal of the foreign matter filtered by the filter screen.

[0005] To achieve the above technical purposes, the utility model adopts the following technical scheme: a split type nozzle, comprising a flow channel, a head, and a tail, the flow channel passes through the tail and the head, the head is provided with a butt joint portion at one end facing the tail, the tail is provided with an inner groove at one end facing the head, the butt joint portion is inserted into the inner groove, the inner groove is provided with a mounting groove at one side away from the head, a sleeve is inserted and connected in the mounting groove, the sleeve is provided with a through hole in the middle, the through hole is communicated with the flow channel, the inner diameter of the through hole is the same as that of the flow channel, the through hole is provided with a filter screen in the middle, the filter screen is used to filter the foreign matter in the fluid in the flow channel, and the tail is provided with a mounting portion at one end away from the head.

[0006] Preferably, the outer wall of the head at one end facing the tail and the outer wall of the tail at one end facing the head are both provided with a locking portion, the locking portion is provided with an external thread, and the locking portion is threadedly connected with a locking nut.

[0007] Preferably, the middle part of the tail is provided with a locating ring for limiting the position of the locking nut.

[0008] Preferably, the mounting part is provided with an external thread, and the mounting part is screwed to the wall of the boiler top.

[0009] Preferably, the head is provided with a nozzle and a guide groove at the end away from the butt joint part, the guide groove is communicated with the flow channel and the nozzle, the inner diameter of the nozzle is smaller than that of the flow channel, and the inner diameter of the guide groove gradually increases from the side of the nozzle to the side of the flow channel.

[0010] Preferably, the butt joint part is provided with an external thread, and the inner wall of the inner groove is provided with an internal thread, and the butt joint part is screwed to the inner groove.

[0011] In summary, the utility model has achieved the following technical effects:

[0012] The utility model discloses a split type nozzle, the head and the tail are split and set, are easy to dismount, and the sleeve pipe provided with the filter screen is inserted in the tail, and the sleeve pipe can be easily taken out by separating the head and the tail, and the filter screen in the sleeve pipe is convenient for cleaning. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structure schematic diagram of the split type nozzle of the utility model, and the head and the tail are split and set.

[0014] Figure 2 It is the structure schematic diagram of the head of the split type nozzle of the utility model.

[0015] Figure 3 It is the structure schematic diagram of the tail of the split type nozzle of the utility model.

[0016] The description of the drawing of the specification is as follows: 1, head, 2, tail, 3, locking nut, 4, locating ring, 5, mounting part, 6, locking part, 7, inner groove, 8, sleeve pipe, 9, filter screen, 10, flow channel, 11, butt joint part. DETAILED DESCRIPTION

[0017] The utility model will be further explained in detail in combination with the drawings.

[0018] The specific embodiment is only the explanation of the utility model, and it is not the limitation of the utility model, and the person skilled in the art can make the modification without the creative contribution according to the need after reading the specification, but as long as in the claim range of the utility model, it is protected by the patent law.

[0019] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0020] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0021] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] In the utility model, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0023] Embodiment one:

[0024] As Figure 1As shown in Fig. 3, the split nozzle comprises a flow channel 10, a head 1 and a tail 2, the flow channel 10 passes through the tail 2 and the head 1, the head 1 is provided with a butt joint 11 at one end facing the tail 2, the tail 2 is provided with an inner groove 7 at one end facing the head 1, the butt joint 11 is inserted into the inner groove 7, the inner groove 7 is provided with a mounting groove at a side away from the head 1, a sleeve 8 is inserted into the mounting groove, the sleeve 8 is provided with a through hole at the middle part, the through hole is communicated with the flow channel 10, the inner diameter of the through hole is the same as the inner diameter of the flow channel 10, the through hole is provided with a filter screen 9 at the middle part, the filter screen 9 is used for filtering foreign matters in the fluid in the flow channel 10, and the tail 2 is provided with a mounting part 5 at a side away from the head 1.

[0025] When assembled, the sleeve 8 is mounted into the mounting groove, the butt joint 11 of the head 1 is screwed into the inner groove 7 to realize the butt joint and preliminary locking of the head 1 and the tail 2, then the locking bolt is screwed, the locking part 6 on the tail 2 and the head 1 is locked by the locking bolt to further lock the head 1 and the tail 2; when mounted, only the mounting part 5 needs to be screwed into the furnace wall on the top of the boiler; when disassembled and cleaned, the nozzle is first screwed down from the furnace wall on the top of the boiler, then the locking bolt is screwed down, then the head 1 is screwed to separate the head 1 and the tail 2, and finally the sleeve 8 is taken out, so that the filter screen 9 can be quickly and effectively cleaned.

[0026] The split nozzle of the embodiment is split into the head 1 and the tail 2, is easy to disassemble and assemble, and the sleeve 8 provided with the filter screen 9 is inserted into the tail 2, so that the sleeve 8 can be easily taken out by separating the head 1 and the tail 2, which is beneficial to cleaning the foreign matters accumulated on the filter screen 9 in the sleeve 8.

[0027] The outer wall of the head 1 at one end facing the tail 2 and the outer wall of the tail 2 at one end facing the head 1 are both provided with a locking part 6, the locking part 6 is provided with external threads, the locking part 6 is threadedly matched with the locking nut 3, the outer periphery of the butt joint 11 is provided with external threads, the inner wall of the inner groove 7 is provided with internal threads, and the butt joint 11 is threadedly matched with the inner groove 7; the head 1 and the tail 2 are both provided with the locking part 6, the head 1 and the tail 2 can be externally locked by the locking bolt, which not only assists the butt joint 11 to be screwed into the inner groove 7 to realize the locking of the tail 2 and the head 1 and improve the overall strength of the nozzle, but also improves the sealing performance to avoid the leakage of the fluid from the gap between the head 1 and the tail 2.

[0028] The tail 2 is provided with a position ring 4 at the middle part, and the position ring 4 is used for limiting the position of the locking nut 3; the position ring 4 can avoid the locking nut 3 from being screwed in too much.

[0029] The mounting part 5 is provided with external threads, and the mounting part 5 is threadedly matched with the furnace wall on the top of the boiler.

[0030] The head 1 is provided with a spout and a guide groove at one end away from the butt joint part 11, the guide groove is communicated with the flow channel 10 and the spout, the inner diameter of the spout is smaller than that of the flow channel 10, and the inner diameter of the guide groove gradually increases from the side of the spout to the side of the flow channel 10.

[0031] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form, and any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application shall fall within the scope of the technical scheme of the present application.

Claims

1. A split spray head characterized by, The utility model provides a kind of boiler, including flow channel, head and tail, the flow channel passes through tail and head, the head is provided with butt joint towards tail one end, the tail is provided with inner recess towards head one end, the butt joint is inserted into inner recess, the inner recess is provided with mounting slot away from head side, the mounting slot is inserted with sleeve, the sleeve middle part is provided with through-hole, the through-hole is communicated with flow channel, the through-hole inner diameter is same with flow channel inner diameter, the through-hole middle part is provided with filter screen, the filter screen is used to filter the foreign matter in fluid in flow channel, the tail is provided with mounting portion away from head one end.

2. The split spray head of claim 1, wherein, The head towards tail one end outer wall and the tail towards head one end outer wall are both provided with locking portion, the locking portion is provided with external thread, and the locking portion is threadedly connected with locking nut.

3. The split spray head of claim 2, wherein, The tail middle part is provided with in-place ring, and the in-place ring is used to limit the position of the locking nut.

4. The split spray head of claim 1, wherein, The mounting portion is provided with external thread, and the mounting portion is threadedly connected with the furnace wall of the top of the boiler.

5. The split spray head of claim 1, wherein, The head away from butt joint one end is provided with spout and guide slot, the guide slot is communicated with flow channel and spout, the spout inner diameter is less than flow channel inner diameter, and the inner diameter of the guide slot gradually increases from the side of the spout to the side of the flow channel.

6. The split spray head of claim 1, wherein, The butt joint outer periphery is provided with external thread, the inner wall of the inner recess is provided with internal thread, and the butt joint is threadedly connected with the inner recess.

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