CN107023926B - Spray humidifying device - Google Patents
Spray humidifying device Download PDFInfo
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- CN107023926B CN107023926B CN201710244706.6A CN201710244706A CN107023926B CN 107023926 B CN107023926 B CN 107023926B CN 201710244706 A CN201710244706 A CN 201710244706A CN 107023926 B CN107023926 B CN 107023926B
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- 239000007921 spray Substances 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 44
- 238000007789 sealing Methods 0.000 claims description 37
- 238000001914 filtration Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 239000003595 mist Substances 0.000 abstract description 12
- 239000002245 particle Substances 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
- F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
- F24F6/14—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using nozzles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
- F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
- F24F6/14—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using nozzles
- F24F2006/146—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using nozzles using pressurised water for spraying
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Nozzles (AREA)
- Air Humidification (AREA)
Abstract
本发明涉及一种喷雾加湿装置，包括基座和设置于基座上的导流风罩，还包括加湿管道，加湿管道上设置有位于导流风罩的出风侧的喷嘴。喷嘴位于导流风罩的出风侧，采用这样的结构设计可以保证由喷嘴喷出的微雾颗粒不会直接打到导流风罩上而形成水滴落下，不会降低其使用效果，而且喷嘴的拆装比较方便。
The invention relates to a spray humidification device, which includes a base, an air guide hood arranged on the base, and a humidification pipe. The humidification pipe is provided with a nozzle located on the air outlet side of the air guide hood. The nozzle is located on the outlet side of the air guide hood. This structural design can ensure that the micro mist particles sprayed from the nozzle will not directly hit the air guide hood and form water droplets, which will not reduce its use effect, and the nozzle The disassembly and assembly are more convenient.
Description
技术领域Technical field
本发明涉及一种喷雾加湿装置。The invention relates to a spray humidification device.
背景技术Background technique
微雾加湿的工作原理是利用高压柱塞泵将水压提高到4-7Mpa，然后将加压后的水经耐高压输送管线由专业喷嘴将其雾化，产生微米级的微雾颗粒，使其能够迅速从空气中吸收热量完成汽化并扩散，从而完成空气加湿、降温的目的。卷烟厂房中经常会用到该技术，在机板上均布有多个安装槽，安装槽中设置有导流风罩，机板上于导流风罩的后方设置有喷嘴连接座，喷嘴连接座包括具有液流通道的连接座本体，液流通道于连接座本体的一端形成供喷嘴连接的喷嘴连接孔，喷嘴连接孔上连接有喷嘴，喷嘴也位于导流风罩的后方，安装槽中于导流风罩的后方设置有风道，依靠风通过导流风罩将喷嘴喷出的液体吹向室内空间，不仅可以起到加湿、降温的作用，而且卷烟厂房中漂浮的烟沫等小颗粒在微雾颗粒的作用下，也会发生沉降。但是，由于喷嘴位于导流风罩的后方，喷嘴中喷出的微雾颗粒在风槽中的风带动下首先会打到导流风罩上，使微雾颗粒变成水滴流下，导致其效果变差。The working principle of micro mist humidification is to use a high-pressure plunger pump to increase the water pressure to 4-7Mpa, and then atomize the pressurized water through a high-pressure-resistant transportation pipeline by a professional nozzle to produce micron-level micro-mist particles. It can quickly absorb heat from the air to complete vaporization and diffusion, thereby achieving the purpose of air humidification and cooling. This technology is often used in cigarette factories. There are multiple installation slots evenly distributed on the machine board. There is an air guide hood in the installation slot. The machine board is equipped with a nozzle connection seat behind the air guide hood. The nozzle connection seat is installed on the machine board. The seat includes a connecting seat body with a liquid flow channel. The liquid flow channel forms a nozzle connection hole for nozzle connection at one end of the connection seat body. The nozzle connection hole is connected to a nozzle. The nozzle is also located behind the air guide hood and in the installation groove. There is an air duct behind the air guide hood, which relies on the wind to blow the liquid sprayed from the nozzle to the indoor space through the air guide hood. It can not only humidify and cool down, but also remove small particles such as smoke floating in the cigarette factory. Particles will also settle under the influence of micro mist particles. However, since the nozzle is located behind the air guide hood, the mist particles sprayed from the nozzle will first hit the air guide hood driven by the wind in the air trough, causing the micro mist particles to turn into water droplets and flow down, causing the effect get worse.
发明内容Contents of the invention
本发明的目的在于提供一种解决了现有技术中由喷嘴喷出的液体会打到导流风罩上导致微雾效果变差问题的喷雾加湿装置。The object of the present invention is to provide a spray humidification device that solves the problem in the prior art that the liquid sprayed from the nozzle will hit the air guide hood, causing the micro mist effect to deteriorate.
为实现上述目的，本发明的一种喷雾加湿装置的技术方案是：一种喷雾加湿装置，包括基座和设置于基座上的导流风罩，还包括加湿管道，所述加湿管道上设置有位于导流风罩的出风侧的喷嘴。In order to achieve the above object, the technical solution of a spray humidification device of the present invention is: a spray humidification device, including a base and a guide air hood arranged on the base, and also includes a humidification pipe, and the humidification pipe is provided with There is a nozzle located on the outlet side of the hood.
所述加湿管道位于导流风罩的迎风侧，所述喷嘴通过穿设于导流风罩中的喷嘴连接座连接于加湿管道上。The humidification pipe is located on the windward side of the air guide hood, and the nozzle is connected to the humidification pipe through a nozzle connection seat that is penetrated in the air guide hood.
所述加湿管道上沿其长度延伸方向连接有多个所述喷嘴。A plurality of nozzles are connected to the humidification pipe along its length direction.
所述基座包括多个横向和/或竖向布置的安装条组，导流风罩设置于相应的安装条组，各安装条组包括两个以上的安装条，各安装条组的相邻两个安装条之间形成供风通过的导风空间。The base includes a plurality of horizontally and/or vertically arranged mounting strip groups, and the air guide hood is arranged on the corresponding mounting strip group. Each mounting strip group includes more than two mounting strips, and the adjacent mounting strips of each mounting strip group are An air guide space for air to pass is formed between the two installation bars.
所述喷嘴连接座包括具有流液通道的连接座本体，连接座本体上设置有喷嘴连接结构，所述流液通道中设置有内腔与流液通道的进液口连通的滤芯，滤芯的侧壁上设置有多个滤孔，连接座本体与滤芯之间设置有用于连通滤孔和流液通道的出液口的连通通道。The nozzle connection seat includes a connection seat body with a flow channel. The connection seat body is provided with a nozzle connection structure. The flow channel is provided with a filter element with an inner cavity connected to the liquid inlet of the flow channel. The side of the filter element A plurality of filter holes are provided on the wall, and a communication channel for connecting the filter holes and the liquid outlet of the liquid channel is provided between the connecting seat body and the filter element.
所述流液通道中于滤芯和流液通道的出液口之间设置有滤芯限位座，滤芯的一端定位安装于连接座本体上，滤芯限位座与滤芯的另一段之间通过插接结构对滤芯进行定位，滤芯限位座上和/或滤芯限位座与连接座之间设置有连通流液通道的出液口与连通通道的中间流道。A filter element limit seat is provided in the flow channel between the filter element and the liquid outlet of the flow channel. One end of the filter element is positioned and installed on the connecting seat body. The filter element limit seat and the other section of the filter element are connected by plugging. The structure positions the filter element, and a liquid outlet connecting the liquid channel and an intermediate flow channel connecting the channel are provided on the filter element limit seat and/or between the filter element limit seat and the connecting seat.
所述滤芯限位座包括一体设置的限位块部分和限位筒部分，中间流道包括沿插接结构周向设置于限位块部分上的第一中间流道和由限位筒部分的内孔形成的连通各第一中间流道与流液通道的出液口的第二中间流道，第一中间流道的直径小于第二中间流道的直径。The filter element limit seat includes an integrally provided limit block part and a limit cylinder part. The intermediate flow channel includes a first intermediate flow channel provided on the limit block part along the circumferential direction of the plug-in structure and a first intermediate flow channel formed by the limit cylinder part. The inner hole forms a second intermediate flow channel that connects each first intermediate flow channel and the liquid outlet of the liquid channel, and the diameter of the first intermediate flow channel is smaller than the diameter of the second intermediate flow channel.
所述插接结构包括设置于滤芯的端部上的中心定位孔和设置于滤芯限位座上的中心定位凸起。The plug-in structure includes a center positioning hole provided on the end of the filter element and a center positioning protrusion provided on the filter element limiting seat.
所述滤芯的端面为朝向流液通道的出液口的以避让中间流道的圆弧面。The end surface of the filter element is an arc surface facing the liquid outlet of the liquid channel to avoid the intermediate flow channel.
所述连接座本体包括分体设置的用于与机板连接的机板连接部分和用于与机板连接部分连接的喷嘴连接部分，机板连接部分上设置有第一密封槽和第一密封圈，喷嘴连接部分上设置有第二密封槽和第二密封圈，第一密封槽和第二密封槽中的至少一个密封槽的尺寸小于相应密封圈的尺寸。The connecting seat body includes a separate machine plate connecting part for connecting to the machine plate and a nozzle connecting part for connecting to the machine plate connecting part. The machine plate connecting part is provided with a first sealing groove and a first seal. The nozzle connection part is provided with a second sealing groove and a second sealing ring, and the size of at least one of the first sealing groove and the second sealing groove is smaller than the size of the corresponding sealing ring.
本发明的有益效果是：喷嘴位于导流风罩的出风侧，采用这样的结构设计可以保证由喷嘴喷出的微雾颗粒不会直接打到导流风罩上而形成水滴落下，不会降低其使用效果。The beneficial effects of the present invention are: the nozzle is located on the air outlet side of the air guide hood. Such a structural design can ensure that the micro mist particles sprayed from the nozzle will not directly hit the air guide hood and form water droplets. Reduce the effectiveness of its use.
附图说明Description of drawings
图1为一种喷雾加湿装置的一个实施例的结构示意图；Figure 1 is a schematic structural diagram of an embodiment of a spray humidification device;
图2为喷嘴连接座的结构示意图；Figure 2 is a schematic structural diagram of the nozzle connection seat;
图3为喷嘴连接座与机板的位置关系示意图；Figure 3 is a schematic diagram of the positional relationship between the nozzle connection seat and the machine board;
图4为滤芯的剖视结构示意图；Figure 4 is a schematic cross-sectional structural diagram of the filter element;
图5为滤芯限位座的内部结构示意图；Figure 5 is a schematic diagram of the internal structure of the filter element limit seat;
图6为机板连接部分的结构示意图；Figure 6 is a schematic structural diagram of the connection part of the machine board;
图7为喷嘴连接部分的结构示意图。Figure 7 is a schematic structural diagram of the nozzle connection part.
具体实施方式Detailed ways
下面结合附图对本发明的实施方式作进一步说明。The embodiments of the present invention will be further described below with reference to the accompanying drawings.
本发明的一种喷雾加湿装置的具体实施例，如图1至图7所示，包括基座、设置于基座上的多个导流风罩10、设置于导流风罩10中的喷嘴连接座、喷嘴100和加湿管道，喷嘴100通过喷嘴连接座连接于加湿管道上，喷嘴连接座上设置有喷嘴连接结构，喷嘴连接结构为螺纹结构。喷嘴连接座包括具有液流通道的连接座本体，流液通道的出液口处设置有用于与喷嘴内螺纹段，即流液通道的出液口形成供喷嘴连接的喷嘴连接孔23。液流通道中设置有滤芯3，滤芯3的内腔与液流通道的进液口连通，滤芯3的靠近喷嘴连接孔23的一端为盲端34，滤芯3的侧壁上沿周向设置有多个滤孔31。液流通道中于滤芯3与喷嘴连接孔23之间设置有滤芯限位座4，滤芯3与滤芯限位座4之间采用插接结构进行定位。滤芯限位座4包括限位块部分和限位筒部分，插接结构包括设置于滤芯3的盲端上的中心定位孔32和设置于滤芯限位座4的限位块部分上的中心定位凸起41。中间流道包括沿中心定位凸起41周向设置于限位块部分上的第一中间流道42和由限位筒部分的内孔形成的连通各第一中间流道42与流液通道的出液口的第二中间流道43，第一中间流道42的直径小于第二中间流道43的直径。滤芯3的盲端的端面为朝向流液通道的出液口以避让中间流道的圆弧面。连接座本体的内壁与滤芯3之间存在间隙，连接座本体的内壁与滤芯3之间的间隙、圆弧面与各中间流道之间的避让空间一起形成连通滤孔31与喷嘴连接孔23的连通通道。采用侧面设置滤孔的方式，增加了过滤面积，只需要定期更换滤芯即可，避免了长期使用过程中由于水中的杂质喷嘴易结垢和堵塞的问题。A specific embodiment of a spray humidification device of the present invention, as shown in Figures 1 to 7, includes a base, a plurality of air guide hoods 10 provided on the base, and nozzles provided in the air guide hood 10 The connection seat, the nozzle 100 and the humidification pipe. The nozzle 100 is connected to the humidification pipe through the nozzle connection seat. The nozzle connection seat is provided with a nozzle connection structure, and the nozzle connection structure is a threaded structure. The nozzle connection seat includes a connection seat body with a liquid flow channel. The liquid outlet of the liquid flow channel is provided with a nozzle connection hole 23 for connecting the nozzle with the internal thread section of the nozzle, that is, the liquid outlet of the liquid channel. A filter element 3 is provided in the liquid flow channel. The inner cavity of the filter element 3 is connected with the liquid inlet of the liquid flow channel. One end of the filter element 3 close to the nozzle connection hole 23 is a blind end 34. The side wall of the filter element 3 is provided with multiple holes along the circumferential direction. 31 filter holes. A filter element limit seat 4 is provided in the liquid flow channel between the filter element 3 and the nozzle connection hole 23, and a plug-in structure is used for positioning between the filter element 3 and the filter element limit seat 4. The filter element limit seat 4 includes a limit block part and a limit cylinder part. The plug-in structure includes a center positioning hole 32 provided on the blind end of the filter element 3 and a center positioning hole 32 provided on the limit block part of the filter element limit seat 4 Bump 41. The intermediate flow channel includes a first intermediate flow channel 42 provided on the limiting block part along the circumferential direction of the central positioning protrusion 41 and an inner hole formed by the inner hole of the limiting cylinder part that connects each first intermediate flow channel 42 with the fluid channel. In the second intermediate flow channel 43 of the liquid outlet, the diameter of the first intermediate flow channel 42 is smaller than the diameter of the second intermediate flow channel 43 . The end surface of the blind end of the filter element 3 faces the liquid outlet of the liquid channel to avoid the arc surface of the intermediate flow channel. There is a gap between the inner wall of the connecting seat body and the filter element 3. The gap between the inner wall of the connecting seat body and the filter element 3, the arc surface and the avoidance space between the intermediate flow channels together form the connecting filter hole 31 and the nozzle connecting hole 23. of connecting channels. The filter holes are set on the side to increase the filtration area. Only the filter element needs to be replaced regularly, which avoids the problem of easy scaling and clogging of the nozzle due to impurities in the water during long-term use.
连接座本体包括分体设置的机板连接部分1和喷嘴连接部分2，机板连接部分1包括机板连接本体11和一体设置于机板连接本体11上的用于与机板6螺纹连接的机板连接螺纹段12，机板连接本体11和机板连接螺纹段12形成台阶结构，台阶结构的台阶面13上设置有第一密封槽14，机板连接螺纹段12上套设有第一密封圈7，第一密封槽14的尺寸小于第一密封圈7的尺寸，在密封配合时，第一密封圈7的一部分被挤压进第一密封槽中。机板连接部分1的内孔为两级阶梯孔结构，滤芯3的外径与中孔径段15一致并安装于滤芯3的中孔径段15中，即滤芯的进液段定位安装于机板连接部分1上，滤芯的进液端的端面上设置有内倒角33，该进液端的端面与中孔径段15上的台阶面17之间设置有滤芯密封垫5。The connection seat body includes a machine board connection part 1 and a nozzle connection part 2 that are separately arranged. The machine board connection part 1 includes a machine board connection body 11 and a screw that is integrally provided on the machine board connection body 11 for threaded connection with the machine board 6 The machine plate connecting threaded section 12, the machine plate connecting body 11 and the machine plate connecting threaded section 12 form a step structure. The step surface 13 of the step structure is provided with a first sealing groove 14, and the machine plate connecting threaded section 12 is provided with a first sealing groove 14. The size of the sealing ring 7 and the first sealing groove 14 is smaller than the size of the first sealing ring 7. During sealing fit, a part of the first sealing ring 7 is extruded into the first sealing groove. The inner hole of the machine plate connection part 1 has a two-stage stepped hole structure. The outer diameter of the filter element 3 is consistent with the middle pore diameter section 15 and is installed in the middle pore diameter section 15 of the filter element 3. That is, the liquid inlet section of the filter element is positioned and installed at the machine plate connection. On part 1, the end face of the liquid inlet end of the filter element is provided with an internal chamfer 33, and a filter element sealing gasket 5 is provided between the end face of the liquid inlet end and the step surface 17 on the medium aperture section 15.
喷嘴连接部分2包括喷嘴连接本体21和一体设置于喷嘴连接本体21上的用于与机板连接部分21螺纹连接的喷嘴连接螺纹段22，喷嘴连接螺纹段22和喷嘴连接本体21形成阶梯轴结构，阶梯轴结构的台阶面上设置有第二密封槽，喷嘴连接螺纹段上套设有第二密封圈8，第二密封槽的尺寸小于第二密封圈8的尺寸，在密封配合时，第二密封圈8的一部分被挤压进第二密封槽中。加湿管道位于导流风罩的迎风侧，加湿管道上沿其长度延伸方向连接有多个上述喷嘴。The nozzle connection part 2 includes a nozzle connection body 21 and a nozzle connection threaded section 22 integrally provided on the nozzle connection body 21 for threaded connection with the machine plate connection part 21. The nozzle connection threaded section 22 and the nozzle connection body 21 form a stepped shaft structure. , a second sealing groove is provided on the step surface of the stepped shaft structure, and a second sealing ring 8 is set on the nozzle connecting thread section. The size of the second sealing groove is smaller than the size of the second sealing ring 8. When the sealing is matched, the second sealing ring 8 is set on the step surface of the stepped shaft structure. A part of the second sealing ring 8 is squeezed into the second sealing groove. The humidification pipe is located on the windward side of the air guide hood, and a plurality of the above-mentioned nozzles are connected to the humidification pipe along its length direction.
喷嘴位于导流风罩的出风侧即位于导流风罩的前方，微雾颗粒由喷嘴中喷出的瞬间不会打到导流风罩上，避免了现有技术中由于喷嘴位于导流风罩的后方导致由喷嘴喷出的微雾颗粒直接打到导流风罩上而变成水滴降低其微雾效果的问题。而且，喷嘴位于导流风罩的前方，便于拆装。The nozzle is located on the outlet side of the air guide hood, that is, in front of the air guide hood. The micro mist particles will not hit the air guide hood at the moment they are ejected from the nozzle, which avoids the problem in the prior art that the nozzle is located on the air guide hood. The rear of the air hood causes the micro mist particles sprayed from the nozzle to directly hit the air guide hood and turn into water droplets, reducing the micro mist effect. Moreover, the nozzle is located in front of the air guide hood, making it easy to disassemble and assemble.
基座包括多个竖向布置的安装条组9，导流风罩10设置于相应的安装条组9，各安装条组9包括两个安装条，各安装条组9的两个安装条之间形成供风通过的导风空间，导风空间中的风吹向导流风罩将由喷嘴喷出的微雾颗粒吹向室内。The base includes a plurality of vertically arranged mounting strip groups 9. The air guide 10 is provided on the corresponding mounting strip group 9. Each mounting strip group 9 includes two mounting strips. One of the two mounting strips of each mounting strip group 9 An air guide space is formed for the wind to pass through, and the wind in the air guide space blows the mist particles ejected from the nozzle into the room by the guide hood.
在本发明的其他实施例中，安装条组也可以横向布置；各安装条组的安装条的数量可根据实际需要进行调整；各加湿管道上的喷嘴的数量可根据实际需要进行调整；也可以不设置喷嘴连接座，也可以将喷嘴会直接连接于加湿管道上；喷嘴连接座也可以不穿设于导流风罩中，可以位于导流风罩的前方；滤孔也可以设置于滤芯的侧壁和底壁上；也可以不设置滤芯限位座，此时滤芯的盲段定位安装于连接座本体上；盲端的外侧也可以为方形结构而不是弧面，此时方形结构与各流道之间存在避让空间；插接结构也可以为设置于滤芯的盲端上的中心定位柱和设置于滤芯限位座上的中心定位孔；机板连接部分上也可以不设置第一密封槽，直接安装第一密封圈与台阶的台阶面进行密封配合；喷嘴连接部分上也可以不设置第二密封槽，直接安装第二密封圈与阶梯轴的台阶面进行密封配合；也可以不在滤芯限位座上设置流道，此时可以在滤芯限位座与连接座本体之间设置有流道；也可以在滤芯限位座上设置有流道的同时，也在滤芯限位座与连接座本体之间设置流道。In other embodiments of the present invention, the mounting strip groups can also be arranged horizontally; the number of mounting strips in each mounting strip group can be adjusted according to actual needs; the number of nozzles on each humidification pipe can be adjusted according to actual needs; or Without setting up the nozzle connection seat, the nozzle can also be directly connected to the humidification pipe; the nozzle connection seat can also not be installed in the air guide hood, but can be located in front of the air guide hood; the filter hole can also be set in the filter element. On the side wall and bottom wall; the filter element limit seat does not need to be provided. In this case, the blind section of the filter element is positioned and installed on the connecting seat body; the outside of the blind end can also be a square structure instead of a curved surface. In this case, the square structure is connected with each flow. There is an avoidance space between the channels; the plug-in structure can also be a center positioning post provided on the blind end of the filter element and a center positioning hole provided on the filter element limit seat; the first sealing groove also does not need to be provided on the connecting part of the machine board , directly install the first sealing ring and the step surface of the step for sealing cooperation; the nozzle connection part may not be provided with a second sealing groove, and directly install the second sealing ring and the step surface of the step shaft for sealing cooperation; or it may not be limited to the filter element A flow channel is provided on the seat. At this time, a flow channel can be provided between the filter element limit seat and the connection seat body; or a flow channel can be provided on the filter element limit seat and at the same time, between the filter element limit seat and the connection seat. A flow channel is provided between the bodies.
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