CN219631613U

CN219631613U - Foam spray nozzle capable of preventing dust from entering

Info

Publication number: CN219631613U
Application number: CN202320918742.7U
Authority: CN
Inventors: 刘振兴; 张彩军; 宋志华; 徐叶兵; 刘利苹; 刘耀辉
Original assignee: Zhejiang Mira Plastic Industry Co ltd
Current assignee: Zhejiang Mira Plastic Industry Co ltd
Priority date: 2023-04-23
Filing date: 2023-04-23
Publication date: 2023-09-05
Anticipated expiration: 2033-04-23

Abstract

The utility model discloses a foam spray nozzle capable of preventing dust from entering, and relates to the technical field of foam spray nozzles, comprising a nozzle main body, a spray unit and a filter unit; the nozzle main body is positioned below the guide pipe; the spraying unit comprises a connecting plate, a mounting plate, a bolt, a mounting seat, a thread groove, a gasket, a nozzle, a protection component and a baffle component, wherein the protection component is mounted at the lower end of the spray head main body, and the baffle component is mounted at the outer side of the lower end of the spray head main body; the filter unit is installed at the lower end of the thread groove. Be equipped with the protection that protective component carries out the spreadability to the shower nozzle, prevent that the dust from getting into in the shower nozzle, the protection effect is better, and is equipped with the baffle subassembly and strengthens the connection of protective component and shower nozzle main part, guarantees the protective effect of protective component to the nozzle, is equipped with filter unit in addition and filters the rivers of inserting, prevents impurity in the rivers and blocks up the shower nozzle, guarantees shower nozzle normal use.

Description

Foam spray nozzle capable of preventing dust from entering

Technical Field

The utility model relates to the technical field of foam spray nozzles, in particular to a foam spray nozzle capable of preventing dust from entering.

Background

The spray nozzle is used for mixing and spraying pressurized water flow and compressed gas and dispersing in a mist form, is widely applied to various production and living equipment, and can be used for cleaning, spraying, cooling, fire prevention and extinguishment, humidification, dust removal, lubrication, gas regulation and the like;

the utility model discloses a spray nozzle of patent publication No. CN214515504U among the prior art, this spray nozzle includes the mounting panel, the lower surface fixedly connected with mount pad of mounting panel, the surface threaded connection of mount pad has the protecting crust, the inner wall fixedly connected with supporting spring of protecting crust, the one end that supporting spring kept away from the protecting crust is fixedly connected with baffle, the middle part fixedly connected with catheter of baffle, the surface threaded connection of catheter one end has the shower nozzle, the surface fixedly connected with locating piece of protecting crust;

the protection effect of the spray nozzle is not good enough, dust cannot be prevented from entering the spray nozzle from the bottom end of the protective shell, the filter assembly is not arranged to filter water flow, impurities in the water flow are easy to block the spray nozzle, and therefore, the foam spray nozzle capable of preventing the dust from entering is provided.

Disclosure of Invention

The utility model aims to overcome the prior art, and provides the foam spray nozzle capable of preventing dust from entering, which is provided with the protection component for protecting the nozzle of the nozzle from covering, so that dust is prevented from entering the nozzle of the nozzle, the protection effect is better, the baffle component is arranged for reinforcing the connection between the protection component and the nozzle main body, the protection effect of the protection component on the nozzle is ensured, and the filter unit is additionally arranged for filtering the accessed water flow, so that the nozzle of the nozzle is prevented from being blocked by impurities in the water flow, the normal use of the nozzle is ensured, and the problems in the background art can be effectively solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a foam spray nozzle capable of preventing dust from entering comprises a nozzle main body, a spray unit and a filter unit;

a spray head main body: is positioned below the catheter;

and a spraying unit: the spray head comprises a connecting plate, a mounting plate, a bolt, a mounting seat, a thread groove, a gasket, a nozzle, a protection component and a baffle component, wherein the lower end of the guide pipe is fixedly connected with the connecting plate, the connecting plate is connected with the mounting plate through the bolt, the gasket is arranged between the connecting plate and the mounting plate, the mounting seat is fixedly connected with the middle part of the lower end of the mounting plate, the thread groove is formed in the middle part of the upper end of the spray head body, the outer side of the mounting seat is in threaded connection with the thread groove, another gasket is arranged between the lower end of the mounting seat and the bottom end of the thread groove, the middle part of the lower end of the spray head body is fixedly connected with a water outlet end, the outer side of the lower end of the water outlet end is in threaded connection with the inner side of the upper end of the nozzle, the protection component is arranged at the lower end of the spray head body, and the baffle component is arranged at the outer side of the lower end of the spray head body;

and a filtering unit: is arranged at the lower end of the thread groove.

Through mounting panel support mount pad, place the packing ring on the mounting panel, install mounting panel and mount pad on the connecting plate through the bolt convenience, thereby conveniently change when the mount pad produces the damage, install the filter unit in the shower nozzle main part, place another packing ring in the screw groove, again with mount pad threaded connection in the screw groove, thereby install the shower nozzle main part on the mounting panel, the packing ring is the silica gel material, strengthen the connection compactness between connecting plate and the mounting panel and between mount pad and the shower nozzle main part through the packing ring, prevent leaking, select suitable nozzle according to the in-service behavior, install nozzle threaded connection on the water outlet end, in leading-in mount pad with pressurized foam water through the pipe, filter foam water through filter unit, prevent that impurity in the foam water from blocking up the nozzle, in the foam water entering nozzle through filtering, be vaporific blowout through the atomizing core in the nozzle, after finishing, protect the nozzle through the protection component, prevent that the dust from entering nozzle, strengthen the connection of protection component and shower nozzle main part through the baffle component, guarantee the protection effect of protection component to the nozzle.

Further, the protective component contains protection casing, mounting groove and curb plate, the ring channel has been seted up in the lower extreme middle part outside of shower nozzle main part, and the upper end joint of ring channel and protection casing, the mounting groove has been seted up to both sides around the ring channel, both sides fixedly connected with curb plate around the outside upper end of protection casing, and curb plate and mounting groove swing joint.

After the use, insert the protection casing in the ring channel, in the curb plate inserted the mounting groove, rotate the protection casing and make the curb plate slide to the inside of mounting groove to install the protection casing on the shower nozzle main part, protect the nozzle through the protection casing, prevent that the dust from getting into in the nozzle.

Further, the baffle subassembly contains spout, baffle, spring and driving lever, the spout has been seted up to the inside left and right sides of lower extreme of shower nozzle main part, and spout and mounting groove intercommunication, spout and baffle sliding connection, and the one end of the one end fixedly connected with spring of baffle, the other end fixedly connected with of spring is at the inside inner of spout, the driving lever groove has been seted up to the lower extreme of spout, the lower extreme fixedly connected with driving lever of baffle, and driving lever groove sliding connection.

After the use, the deflector rod is supported by the baffle plate, the deflector rod is stirred along the deflector rod groove to enable the baffle plate to slide along the chute, the baffle plate is separated from and exposed out of the mounting groove, the spring is contracted, the side plate is inserted into the mounting groove, the protective cover is mounted on the spray head main body, the deflector rod is loosened, the spring stretches to push the baffle plate to slide into the mounting groove, the mounting groove is shielded by the baffle plate, the side plate is prevented from being separated from the mounting groove, and therefore the protective effect of the protective cover on the spray nozzle is guaranteed.

Furthermore, the spraying unit further comprises friction lines, and the friction lines are formed in the outer side of the spray head main body at equal intervals. The force is conveniently applied to the spray head main body through friction lines, so that the spray head main body is conveniently installed on the installation seat.

Further, the filter unit contains side piece groove, side piece, filter screen, cross slot, telescopic link, reset spring, fixture block and draw-in groove, the side piece groove has been seted up to the lower extreme left and right sides of screw thread groove, and side piece groove and side piece joint, the both ends about the inner fixedly connected with filter screen of side piece, and the filter screen is located the lower extreme of packing ring, the cross slot has been seted up to the outer end of side piece, and the inner fixedly connected with telescopic link's of cross slot inner, the outer fixedly connected with fixture block of telescopic link, and reset spring cup joints on the telescopic link, the draw-in groove has been seted up to the outer end in side piece groove, and fixture block and draw-in groove joint.

The filter screen is supported by the side blocks, the filter screen is placed in the thread groove, the clamping blocks are retracted into the transverse groove, the telescopic rods and the reset springs are contracted, the filter screen is pushed to be inserted into the side block groove, the telescopic rods and the reset springs are extended to clamp the clamping blocks in the clamping grooves, the filter screen is mounted in the sprayer body, foam water is filtered through the filter screen, and impurities in the foam water are prevented from blocking the nozzle.

Further, the filter unit further comprises a disassembly groove, the left end and the right end of the outer side of the spray head main body are provided with the disassembly groove, and the disassembly groove is communicated with the clamping groove. When the filter screen is required to be disassembled for cleaning, the strip-shaped tool is inserted into the disassembling groove and pushes the clamping block to be separated from the clamping groove, and the filter screen is not fixed, so that the filter screen can be conveniently taken out.

Compared with the prior art, the utility model has the beneficial effects that: the foam spray nozzle capable of avoiding dust from entering has the following advantages:

1. the filter screen is placed in the thread groove, the side block is inserted into the side block groove, the telescopic rod and the reset spring are extended to clamp the clamping block in the clamping groove, so that the filter screen is conveniently installed in the spray head main body, foam water is filtered through the filter screen, when the filter screen needs to be disassembled, a strip-shaped tool is inserted into the disassembling groove and pushes the clamping block to be separated from the clamping groove, the filter screen is lost to be fixed, and the filter screen can be conveniently taken out;

2. after the spray nozzle is used, the deflector rod is stirred to enable the baffle plate to be separated from and expose the mounting groove, the spring is contracted, the protective cover is inserted into the annular groove, the protective cover is rotated to enable the side plate to slide into the mounting groove, so that the protective cover is conveniently mounted on the spray nozzle body, the spray nozzle is protected through the protective cover, the deflector rod is loosened, the spring stretches to push the baffle plate to slide into the mounting groove, the mounting groove is shielded through the baffle plate, and the side plate is prevented from being separated from the mounting groove;

3. be equipped with the protection that protective component carries out the spreadability to the shower nozzle, prevent that the dust from getting into in the shower nozzle, the protection effect is better, and is equipped with the baffle subassembly and strengthens the connection of protective component and shower nozzle main part, guarantees the protective effect of protective component to the nozzle, is equipped with filter unit in addition and filters the rivers of inserting, prevents impurity in the rivers and blocks up the shower nozzle, guarantees shower nozzle normal use.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a partial enlarged structure of the portion A in FIG. 1 according to the present utility model;

FIG. 3 is a schematic view of the bottom structure of the present utility model;

fig. 4 is a schematic view of a partial enlarged structure at B in fig. 3 according to the present utility model.

In the figure: the spray head comprises a spray head main body 1, a guide pipe 2, a spray unit 3, a connecting plate 31, a mounting plate 32, a bolt 33, a mounting seat 34, a threaded groove 35, a gasket 36, a spray nozzle 37, a protective cover 38, a mounting groove 39, a side plate 310, a sliding groove 311, a baffle 312, a spring 313, a deflector 314, friction lines 315, a filtering unit 4, a side block groove 41, a side block 42, a filter screen 43, a transverse groove 44, a telescopic rod 45, a reset spring 46, a clamping block 47, a clamping groove 48 and a disassembling groove 49.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present embodiment provides a technical solution: a foam spray nozzle capable of preventing dust from entering comprises a nozzle main body 1, a spray unit 3 and a filter unit 4;

spray head body 1: is positioned below the conduit 2;

and a spraying unit 3: the spray head comprises a connecting plate 31, a mounting plate 32, a bolt 33, a mounting seat 34, a thread groove 35, a gasket 36, a nozzle 37, a protection component and a baffle component, wherein the connecting plate 31 is fixedly connected to the lower end of a guide pipe 2, the connecting plate 31 is connected with the mounting plate 32 through the bolt 33, the gasket 36 is arranged between the connecting plate 31 and the mounting plate 32, the mounting seat 34 is fixedly connected to the middle part of the lower end of the mounting plate 32, the thread groove 35 is formed in the middle part of the upper end of the spray head main body 1, the outer side of the mounting seat 34 is in threaded connection with the thread groove 35, another gasket 36 is arranged between the lower end of the mounting seat 34 and the bottom end of the thread groove 35, the middle part of the lower end of the spray head main body 1 is fixedly connected with a water outlet end, the outer side of the lower end of the water outlet end is in threaded connection with the inner side of the upper end of the nozzle 37, the protection component is arranged at the lower end of the spray head main body 1, and the baffle component is arranged at the outer side of the lower end of the spray head main body 1;

the protection component comprises a protection cover 38, a mounting groove 39 and a side plate 310, wherein an annular groove is formed in the outer side of the middle of the lower end of the spray head main body 1, the annular groove is connected with the upper end of the protection cover 38 in a clamping mode, the mounting groove 39 is formed in the front side and the rear side of the annular groove, the side plate 310 is fixedly connected with the front side and the rear side of the upper end of the outer side of the protection cover 38, and the side plate 310 is movably connected with the mounting groove 39.

After the use, insert the protection casing 38 in the ring channel, the curb plate 310 inserts in the mounting groove 39, rotates the protection casing 38 and makes curb plate 310 slide to the inside of mounting groove 39 to install protection casing 38 on shower nozzle main part 1, protect nozzle 37 through protection casing 38, prevent that the dust from getting into in the nozzle 37.

The baffle assembly comprises a chute 311, a baffle 312, a spring 313 and a deflector rod 314, wherein the chute 311 is arranged on the left side and the right side of the inner portion of the lower end of the spray head main body 1, the chute 311 is communicated with the mounting groove 39, the chute 311 is in sliding connection with the baffle 312, one end of the baffle 312 is fixedly connected with one end of the spring 313, the other end of the spring 313 is fixedly connected with the inner end of the chute 311, the deflector rod groove is arranged at the lower end of the chute 311, the deflector rod 314 is fixedly connected with the lower end of the baffle 312, and the deflector rod 314 is in sliding connection with the deflector rod groove.

After the use, the deflector rod 314 is supported by the deflector rod 312, the deflector rod 314 is stirred along the deflector rod groove to enable the deflector rod 314 to slide along the chute 311, the deflector rod 312 is separated from and exposed out of the mounting groove 39, the spring 313 is contracted, the side plate 310 is inserted into the mounting groove 39, after the protective cover 38 is mounted on the spray head main body 1, the deflector rod 314 is loosened, the spring 313 is stretched to push the deflector rod 312 to slide into the mounting groove 39, the mounting groove 39 is shielded by the deflector rod 312, and the side plate 310 is prevented from being separated from the mounting groove 39, so that the protective effect of the protective cover 38 on the spray nozzle 37 is ensured.

The spraying unit 3 further comprises friction lines 315, and the friction lines 315 are formed on the outer side of the spray head main body 1 at equal intervals. The friction lines 315 facilitate application of force to the spray head body 1, and facilitate mounting of the spray head body 1 on the mounting seat 34.

Filter unit 4: is installed at the lower end of the screw groove 35; the filter unit 4 comprises a side block groove 41, a side block 42, a filter screen 43, a transverse groove 44, a telescopic rod 45, a return spring 46, a clamping block 47 and a clamping groove 48, wherein the side block groove 41 is formed in the left side and the right side of the lower end of the threaded groove 35, the side block groove 41 is clamped with the side block 42, the inner end of the side block 42 is fixedly connected with the left end and the right end of the filter screen 43, the filter screen 43 is positioned at the lower end of the gasket 36, the transverse groove 44 is formed in the outer end of the side block 42, the inner end of the transverse groove 44 is fixedly connected with the inner end of the telescopic rod 45, the clamping block 47 is fixedly connected with the outer end of the telescopic rod 45, the return spring 46 is sleeved on the telescopic rod 45, the clamping groove 48 is formed in the outer end of the side block groove 41, and the clamping block 47 is clamped with the clamping groove 48.

The filter screen 43 is supported by the side blocks 42, the filter screen 43 is placed in the threaded groove 35, the clamping blocks 47 are retracted into the transverse grooves 44, the telescopic rods 45 and the reset springs 46 are contracted, the filter screen 43 is pushed continuously to be inserted into the side block grooves 41, the telescopic rods 45 and the reset springs 46 are extended to clamp the clamping blocks 47 in the clamping grooves 48, the filter screen 43 is arranged in the spray head main body 1, foam water is filtered through the filter screen 43, and impurities in the foam water are prevented from blocking the spray nozzle 37.

The filter unit 4 further comprises a disassembling groove 49, the left end and the right end of the outer side of the nozzle body 1 are provided with the disassembling groove 49, and the disassembling groove 49 is communicated with the clamping groove 48. When the filter screen 43 needs to be disassembled for cleaning, a strip tool is inserted into the disassembling groove 49 and pushes the clamping block 47 to be separated from the clamping groove 48, and the filter screen 43 is lost to be fixed, so that the filter screen 43 can be conveniently taken out.

The mounting plate 32 is used for supporting the mounting seat 34, the gasket 36 is placed on the mounting plate 32, the mounting plate 32 and the mounting seat 34 are conveniently mounted on the connecting plate 31 through the bolts 33, so that the mounting plate is convenient to replace when the mounting seat 34 is damaged, the filtering unit 4 is mounted in the spray head main body 1, the other gasket 36 is placed in the threaded groove 35, the mounting seat 34 is connected in the threaded groove 35 in a threaded manner, the spray head main body 1 is mounted on the mounting plate 32, the gasket 36 is made of silica gel, the connection tightness between the connecting plate 31 and the mounting plate 32 and between the mounting seat 34 and the spray head main body 1 is reinforced through the gasket 36, water leakage is prevented, a proper nozzle 37 is selected according to the use condition, the nozzle 37 is mounted on the water outlet end in a threaded manner, pressurized foam water is led into the mounting seat 34 through the guide pipe 2, the filtering unit 4 filters the foam water, the impurity in the foam water is prevented from blocking the nozzle 37, the filtered foam water enters the nozzle 37, the atomizing core in the nozzle 37 is sprayed out, the foam water is protected through the protecting assembly 37 after the use, the nozzle 37 is prevented from entering the nozzle 37, the dust protecting assembly is protected by the protecting assembly, and the nozzle 37 is connected with the nozzle protecting assembly 1 through the protecting assembly and the protecting assembly 1.

The working principle of the foam spray nozzle for preventing dust from entering is as follows: the gasket 36 is placed on the mounting plate 32, the mounting plate 32 and the mounting seat 34 are mounted on the connecting plate 31 through the bolts 33, the filter screen 43 is placed in the threaded groove 35, the clamping blocks 47 are retracted into the transverse grooves 44, the telescopic rods 45 and the return springs 46 are contracted, the filter screen 43 is continuously pushed to be inserted into the side block grooves 41, the telescopic rods 45 and the return springs 46 are extended to clamp the clamping blocks 47 into the clamping grooves 48, the filter screen 43 is mounted in the spray head main body 1, the other gasket 36 is placed in the threaded groove 35, the mounting seat 34 is conveniently connected in the threaded groove 35 through the friction lines 315, the spray head main body 1 is mounted on the mounting plate 32, the connection tightness between the connecting plate 31 and the mounting plate 32 and between the mounting seat 34 and the spray head main body 1 is enhanced through the gasket 36, a proper spray nozzle 37 is selected according to the use condition, the spray nozzle 37 is connected on the water outlet end in a threaded manner, the pressurized foam water is led into the mounting seat 34 through the guide pipe 2, the foam water is filtered through the filter screen 43, the impurity in the foam water is prevented from blocking the nozzle 37, the filtered foam water enters the nozzle 37, the foam water is sprayed out in mist form through the atomization core in the nozzle 37, after the use, the deflector rod 314 is stirred along the deflector rod groove to slide the baffle 312 along the sliding groove 311, the baffle 312 is separated from and exposed out of the mounting groove 39, the spring 313 is contracted, the protective cover 38 is inserted into the annular groove, the side plate 310 is inserted into the mounting groove 39, the protective cover 38 is rotated to slide the side plate 310 into the mounting groove 39, thereby the protective cover 38 is mounted on the spray head main body 1, the nozzle 37 is protected through the protective cover 38, dust is prevented from entering the nozzle 37, the deflector rod 314 is loosened, the spring 313 is stretched to push the baffle 312 to slide into the mounting groove 39, the mounting groove 39 is shielded through the baffle 312, when the filter screen 43 needs to be disassembled for cleaning, the long-strip tool is inserted into the disassembling groove 49 to push the clamping block 47 to be separated from the clamping groove 48, so that the filter screen 43 can be conveniently taken out due to the fact that the filter screen 43 is prevented from being separated from the mounting groove 39, and the filter screen 43 is prevented from being fixed.

The foregoing is only illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, and all equivalent structures or equivalent flow modifications which may be made by the teachings of the present utility model and the accompanying drawings or which may be directly or indirectly employed in other related art are within the scope of the utility model.

Claims

1. The utility model provides a avoid foam atomizer that dust got into which characterized in that: comprises a spray head main body (1), a spraying unit (3) and a filtering unit (4);

spray head main body (1): is positioned below the conduit (2);

spray unit (3): contain connecting plate (31), mounting panel (32), bolt (33), mount pad (34), thread groove (35), packing ring (36), nozzle (37), protection component and baffle subassembly, the lower extreme fixedly connected with connecting plate (31) of pipe (2), and connecting plate (31) are connected with mounting panel (32) through bolt (33), be equipped with packing ring (36) between connecting plate (31) and mounting panel (32), the lower extreme middle part fixedly connected with mount pad (34) of mounting panel (32), thread groove (35) have been seted up at the upper end middle part of shower nozzle main part (1), and the outside and thread groove (35) threaded connection of mount pad (34), be equipped with another packing ring (36) between the lower extreme of mount pad (34) and the bottom of thread groove (35), the lower extreme middle part fixedly connected with play water end of shower nozzle main part (1), and the lower extreme outside of play water end and the inboard threaded connection of the upper end of nozzle (37), protection component installs the lower extreme at shower nozzle main part (1), the outside of shower nozzle main part (1) is installed to the baffle subassembly.

Filtration unit (4): is arranged at the lower end of the thread groove (35).

2. A foam spray nozzle for avoiding dust ingress as defined in claim 1, wherein: the protection component comprises a protection cover (38), a mounting groove (39) and side plates (310), an annular groove is formed in the outer side of the middle of the lower end of the spray head main body (1), the annular groove is connected with the upper end of the protection cover (38) in a clamping mode, the mounting groove (39) is formed in the front side and the rear side of the annular groove, the side plates (310) are fixedly connected with the front side and the rear side of the upper end of the outer side of the protection cover (38), and the side plates (310) are movably connected with the mounting groove (39).

3. A foam spray nozzle for avoiding dust ingress as defined in claim 1, wherein: the baffle assembly comprises a chute (311), a baffle (312), a spring (313) and a deflector rod (314), wherein the chute (311) is formed in the left side and the right side of the inside of the lower end of the spray head main body (1), the chute (311) is communicated with the mounting groove (39), the chute (311) is in sliding connection with the baffle (312), one end of the baffle (312) is fixedly connected with one end of the spring (313), the other end of the spring (313) is fixedly connected with the inner end of the chute (311), the deflector rod groove is formed in the lower end of the chute (311), the deflector rod (314) is fixedly connected with the lower end of the baffle (312), and the deflector rod (314) is in sliding connection with the deflector rod groove.

4. A foam spray nozzle for avoiding dust ingress as defined in claim 1, wherein: the spraying unit (3) further comprises friction lines (315), and the friction lines (315) are formed in the outer side of the spray head main body (1) at equal intervals.

5. A foam spray nozzle for avoiding dust ingress as defined in claim 1, wherein: the utility model discloses a filter unit, filtering unit (4) is including side piece groove (41), side piece (42), filter screen (43), cross slot (44), telescopic link (45), reset spring (46), fixture block (47) and draw-in groove (48), side piece groove (41) have been seted up to the lower extreme left and right sides of screw thread groove (35), and side piece groove (41) and side piece (42) joint, the inner fixedly connected with filter screen (43) of side piece (42) control both ends, and filter screen (43) are located the lower extreme of packing ring (36), cross slot (44) have been seted up to the outer end of side piece (42), and the inner of inside inner fixedly connected with telescopic link (45) of cross slot (44), the outer end fixedly connected with fixture block (47) of telescopic link (45), and reset spring (46) cup joint on telescopic link (45), draw-in groove (48) have been seted up to the outer end of side piece groove (41), and fixture block (47) and draw-in groove (48) joint.

6. A foam spray nozzle for avoiding dust ingress as defined in claim 5, wherein: the filter unit (4) further comprises a dismounting groove (49), the left end and the right end of the outer side of the spray head main body (1) are provided with the dismounting groove (49), and the dismounting groove (49) is communicated with the clamping groove (48).