Annular spraying device of spraying machine and spraying machine thereof

Abstract

The utility model belongs to the field of spraying machines, and particularly relates to an annular spraying device of a spraying machine and the spraying machine thereof, and the annular spraying device comprises a spraying ring, a water inlet mechanism and a pollution discharge mechanism; a water supply cavity is formed in the spraying ring in a hollow mode, a plurality of anti-blocking nozzle structures are arranged on the spraying ring in the circumferential direction, the anti-blocking nozzle structures communicate with the water supply cavity, and filter screen structures used for retaining foreign matter in the water supply cavity are arranged on the anti-blocking nozzle structures. The water inlet mechanism comprises a water inlet pipe connected with the water supply cavity, and the sewage discharging mechanism comprises a sewage discharging pipe connected with the lower end of the water supply cavity and a sewage discharging valve arranged on the sewage discharging pipe. According to the annular spraying device of the spraying machine provided by the utility model, the water supply cavity on the spraying ring and the filter screen structures of the anti-blocking nozzle structures can be cleaned on the basis of not disassembling the machine, so that foreign matters carried by sprayed liquid can be prevented from being retained on the water supply cavity and the filter screen structures of the anti-blocking nozzle structures; therefore, the anti-blocking nozzle structure is blocked and the sprayed liquid is polluted.

Description

Technical Field

[0001] The utility model belongs to the field of sprayers, and in particular relates to a sprayer ring spray device and a sprayer thereof. Background Art

[0002] The atomization effect of a single-phase flow sprayer is determined by the water supply pressure and the nozzle structure. Under the same equipment or a certain water supply pressure, the smaller the nozzle aperture, the better the atomization effect will be, and the smaller the nozzle aperture, the easier it is to get clogged, causing equipment failure. In order to reduce or avoid the clogging problem, the existing sprayers often use a multi-stage filtration method, a primary filter device is installed on the water supply pipeline, and a fine filter device is installed on the sprayer. The nozzle filter is the last fine filter device on the sprayer. Compared with the primary filter, it has the characteristics of compact structure, high water pressure, small flow area, and small filter mesh. Therefore, it is also the most prone to clogging and the most difficult to clean. The existing sprayer nozzle filter is manually disassembled for cleaning or replacement. Due to the high water pressure inside the nozzle, the installation requires the use of sealing threads and sealing materials to assist in sealing, which is difficult to disassemble and assemble, and the sealing requirements are high. Moreover, the disassembly and assembly easily cause thread damage. Therefore, the cleaning of the nozzle filter has become the most frequent and time-consuming work in the maintenance of the existing sprayer. Therefore, a sprayer with anti-clogging and fast and efficient cleaning is urgently needed. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a sprayer annular spray device and a sprayer thereof, which can be cleaned without disassembling the machine.

[0004] The utility model provides a ring spray device for a sprayer, comprising a spray ring, a water inlet mechanism and a sewage discharge mechanism;

[0005] A water supply cavity is provided in the hollow interior of the spray ring, and a plurality of anti-clogging nozzle structures are arranged along the circumference of the spray ring. The anti-clogging nozzle structure is connected to the water supply cavity, and a filter structure for retaining foreign matter in the water supply cavity is provided on the anti-clogging nozzle structure;

[0006] The water inlet mechanism comprises a water inlet pipe connected to the upper end of the water supply cavity, and the sewage discharge mechanism comprises a sewage discharge pipe connected to the lower end of the water supply cavity and a sewage discharge valve arranged on the sewage discharge pipe.

[0007] Furthermore, the water inlet mechanism also includes a water inlet valve, a pressure regulating valve and a water pressure monitoring device arranged on the water inlet pipe.

[0008] Furthermore, the spray rings are provided in a plurality, the plurality of spray rings are coaxially arranged, and the sizes of the plurality of spray rings are inconsistent;

[0009] A plurality of spray rings are arranged at intervals along the axial direction.

[0010] Furthermore, a plurality of the spray rings are connected to the water inlet pipe via a water inlet connecting pipe;

[0011] A plurality of the spray rings are connected to the sewage pipe via sewage connection pipes.

[0012] Furthermore, the annular spray device of the sprayer also includes a fixed connecting plate for connecting and fixing a plurality of the spray rings.

[0013] Furthermore, the anti-clogging nozzle structure includes a nozzle and a filter structure, and the filter structure is a flexible filter;

[0014] The nozzle comprises a body, and a water inlet end, a delivery channel and a nozzle hole which are sequentially connected and arranged on the body, the flexible filter net covers the water inlet end, and the flexible filter net is provided with a plurality of filter holes;

[0015] When the liquid of set pressure is transported to the nozzle hole through the flexible filter net, the pressure of the liquid drives the flexible filter net to shrink inwardly, and the aperture of the minimum aperture of the filter hole is smaller than the aperture of the nozzle hole and the size of the liquid transport channel in the body;

[0016] The flexible filter screen is arranged between the water inlet end and the water supply cavity.

[0017] Furthermore, the filter holes are respectively a small-diameter end and a large-diameter end along the water flow direction when the nozzle sprays water;

[0018] When the flexible filter screen is concave and contracted, the aperture of the small-diameter end of the filter hole is smaller than the aperture of the nozzle hole.

[0019] Furthermore, the flexible filter screen comprises a cylindrical side wall with a hollow interior, one end of the cylindrical side wall is a closed end, and the other end is an open end;

[0020] The open end cooperates with the water inlet end;

[0021] A plurality of filtering holes are arranged on the cylindrical side wall.

[0022] Furthermore, the annular spray device of the sprayer further comprises a high-pressure backwash device, the high-pressure backwash device comprising a nozzle joint and a water supply mechanism for providing a set pressure liquid to the nozzle joint;

[0023] The nozzle joint is detachably mounted on the nozzle and is used to deliver cleaning liquid to the water inlet end through the nozzle hole;

[0024] When the liquid of set pressure is transported to the water inlet through the nozzle hole, the pressure of the cleaning liquid drives the flexible filter net to bulge outward, the aperture of the filter hole becomes larger, and the foreign matter in the filter hole is discharged into the water supply cavity.

[0025] The utility model also provides a sprayer, comprising a sprayer body and the above-mentioned sprayer annular spray device arranged at the sprayer body nozzle, wherein the sprayer annular spray device is connected to a water supply device.

[0026] The beneficial effect of the utility model is that the ring spray device of the sprayer provided by the utility model can clean the water supply cavity on the spray ring and the filter structure of each anti-clogging nozzle structure without disassembling the machine, which can prevent foreign matter carried by the spray liquid from being retained in the water supply cavity and the filter structure of the anti-clogging nozzle structure, thereby causing blockage of the anti-clogging nozzle structure and pollution of the spray liquid. The water supply mechanism can be used to input both the spray liquid and the cleaning liquid, and the sewage discharge mechanism only works in the cleaning condition and will not affect the normal operation of the ring spray device in the spraying condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Attached Figure 1 It is a structural schematic diagram of the spray machine in the utility model;

[0028] Attached Figure 2 This is a schematic diagram of the structure of the ring spray device in the utility model;

[0029] Attached Figure 3 This is a schematic diagram of the structure of the anti-clogging nozzle structure in the utility model;

[0030] Attached Figure 4 This is a schematic diagram of the structure of the flexible filter screen in the utility model;

[0031] Attached Figure 5 It is a front cross-sectional view of the flexible filter screen in the utility model;

[0032] Attached Figure 6 It is a schematic diagram of the coordination between the medium and high pressure backwash device and the ring spray device of the utility model;

[0033] Attached Figure 7 It is a schematic diagram of the cooperation between the nozzle joint and the nozzle in the utility model.

[0034] In the figure, 1-nozzle; 101-body; 102-water inlet end; 103-nozzle hole; 2-flexible filter screen; 201-cylindrical side wall; 202-closed end; 203-open end; 204-filter hole; 2041-small diameter end; 2042-large diameter end; 205-fixing ring; 3-mounting seat; 301-mounting hole; 3011-step; 4-spray ring; 401-water supply cavity; 402-water inlet connection Take over; 403- sewage connection pipe; 404-fixed connection plate; 5-high-pressure backwash device; 501-nozzle joint; 502-high-pressure pipe; 503-water joint; 6-water inlet mechanism; 601-water inlet pipe; 602-water inlet valve; 603-pressure regulating valve; 604-water pressure monitoring device; 605-joint; 7-sewage mechanism; 701-sewage pipe; 702-sewage valve; 8-sprayer body; 9-water supply device. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] As attached Figure 1 -Attached Figure 7 As shown, the utility model provides a sprayer annular spray device, comprising a spray ring 4, a water inlet mechanism 6 and a sewage discharge mechanism 7;

[0041] The spray ring 4 is hollow inside and is provided with a water supply cavity 401. The spray ring 4 is circumferentially provided with a plurality of anti-clogging nozzle structures. All the anti-clogging nozzle structures are connected to the water supply cavity 401 to provide the anti-clogging nozzle structures with spray liquid or cleaning water. The spray liquid and cleaning water can be selected as needed, for example, water can be used. The anti-clogging nozzle structure is provided with a filter structure for retaining foreign matter in the water supply cavity 401. On the one hand, it can prevent foreign matter in the spray liquid from entering the nozzle 1 and causing the nozzle 1 to be blocked. On the other hand, it also retains foreign matter within the range of the water supply cavity 401, which is convenient for cleaning and removing foreign matter during cleaning operations to avoid clogging of the filter structure.

[0042] The water inlet mechanism 6 includes a water inlet pipe 601 connected to the upper end of the water supply cavity 401, which is used to provide the water supply cavity 401 with injection liquid and cleaning liquid. The sewage discharge mechanism 7 includes a sewage discharge pipe 701 connected to the lower end of the water supply cavity 401 and a sewage discharge valve 702 arranged on the sewage discharge pipe 701. The sewage discharge mechanism 7 is arranged at the lower end of the water supply cavity 401, so that the cleaning liquid can carry foreign matter and flow into the lowest point of the water supply cavity 401 by gravity, and be directly discharged through the sewage discharge pipe 701. The sewage discharge valve 702 is used to open and close the sewage discharge pipe 701. 1. When the anti-clogging nozzle structure needs to spray liquid normally, the drain valve 702 blocks the drain pipe 701, so that the spray liquid transported from the water inlet mechanism 6 to the water supply cavity 401 is all sprayed out from the nozzle 1 in each anti-clogging nozzle structure. When the anti-clogging nozzle structure needs to be cleaned, the drain valve 702 opens the drain pipe 701, so that the cleaning liquid transported from the water inlet mechanism 6 to the water supply cavity 401 flushes the filter structure, flushes the foreign matter retained on the filter structure from the filter structure, and then discharges it into the water supply cavity 401 through the drain pipe 701.

[0043] The annular spray device of the sprayer provided by the utility model can clean the water supply cavity 401 on the spray ring 4 and the filter structure of each anti-clogging nozzle structure without disassembling the machine, which can prevent foreign matter carried by the sprayed liquid from being retained in the water supply cavity 401 and the filter structure of the anti-clogging nozzle structure, thereby causing blockage of the anti-clogging nozzle structure and pollution of the sprayed liquid. The water supply mechanism 6 can be used to input both the sprayed liquid and the cleaning liquid, and the sewage discharge mechanism 7 only works in the cleaning condition and will not affect the normal operation of the annular spray device in the spraying condition.

[0044] In one embodiment, the water inlet mechanism 6 also includes a water inlet valve 602, a pressure regulating valve 603 and a water pressure monitoring device 604 arranged on the water inlet pipe 601, wherein the water inlet valve 602 is used to control the on-off of the water inlet pipe 601, thereby opening or closing the water inlet mechanism 6, and the pressure regulating valve 603 can control the water pressure entering the water supply cavity 401, thereby making the liquid entering the water supply cavity 401 meet the injection water pressure or the cleaning water pressure. The water pressure monitoring device 604 can be used to monitor the water pressure of the liquid input into the water supply cavity 401 on the one hand, and on the other hand, it can also compare the monitored liquid water pressure with the theoretical water pressure of the liquid to determine whether the anti-clogging nozzle structure is blocked and the severity of the blockage. For example, when the parameters of the water supply device 9 and the pressure regulating valve 603 remain unchanged, if the water pressure monitored by the water pressure monitoring device 604 is higher than the theoretical water pressure, it is determined that the anti-clogging nozzle structure is blocked, and this is used as a basis for determining whether the annular spray device needs to be cleaned. Preferably, the water inlet valve 602 adopts a solenoid valve, the pressure regulating valve 603 adopts an electric pressure regulating valve, and the water pressure monitoring device 604 adopts a pressure transmitter, which can be automatically adjusted to simplify the operation difficulty. Preferably, the other end of the water inlet pipe 601 is connected to the water supply device 9 through a joint 605, and preferably a quick-release structure is used for connection. In this embodiment, the low-pressure water automatic cleaning function can be realized, that is, when the pressure value checked by the water pressure monitoring device 604 is greater than the set value, it is judged that there is a blockage in the anti-blocking nozzle structure in the ring spray device. At this time, the water pressure entering the water supply cavity 401 can be reduced by the pressure regulating valve 603, and the drain valve 702 is opened to clean and remove foreign matter trapped on the filter structure. When encountering special foreign matter or the low-pressure water washing automatic cleaning function cannot be cleaned up, that is, there is still a blockage after the low-pressure water washing automatic cleaning, the sprayer can send an alarm prompt signal, and the on-site personnel can perform manual high-pressure backwashing at this time, specifically, manual high-pressure backwashing through the high-pressure backwashing device.

[0045] Reference Figure 2 In one embodiment, the spray rings 4 are provided with a plurality of them, the plurality of spray rings 4 are coaxially arranged, and the sizes of the plurality of spray rings 4 are inconsistent, so as to avoid mutual interference between the spray rings 4 and affect the spraying effect;

[0046] Several spray rings 4 are arranged at intervals along the axial direction to form a gradient spray and improve the uniformity of the spray. In this embodiment, the amount of sprayed liquid can be greatly increased, thereby improving the spray effect of the sprayer. In a preferred embodiment, a total of three spray rings 4 are provided, and the three are arranged in sequence front to back, the spray ring 4 located in the front has the largest diameter, the spray ring 4 in the middle has the second largest diameter, and the spray ring 4 located in the rear has the smallest diameter. It should be noted that the spray ring 4 can be circular or any other shape. Preferably, the water inlet mechanism 6 is arranged at the highest point of the spray ring 4, and the sewage discharge mechanism 7 is arranged at the lowest point of the spray ring 4.

[0047] In one embodiment, a plurality of the spray rings 4 are connected to the water inlet pipe 601 through a water inlet connecting pipe 402, thereby facilitating the connection between one water inlet pipe 601 and the water supply cavities 401 of a plurality of spray rings 4;

[0048] The plurality of spray rings 4 are connected to the sewage pipe 701 via sewage connection pipes 403 , thereby facilitating the connection between one sewage pipe 701 and the water supply cavities 401 of the plurality of spray rings 4 .

[0049] In one of the embodiments, the annular spray device further comprises a fixed connecting plate 404 for connecting and fixing a plurality of the spray rings 4, thereby fixing the relative positions of the plurality of spray rings 4.

[0050] Reference Figure 3 -Attached Figure 5 In one embodiment, the anti-clogging nozzle structure includes a nozzle 1 and a filter structure, wherein the filter structure is a flexible filter 2, and the flexible filter 2 is disposed in the water supply cavity 401;

[0051] The nozzle 1 includes a body 101 and a water inlet end 102, a delivery channel and a nozzle hole 103 which are sequentially connected and arranged on the body 101, wherein the nozzle 1 can adopt various liquid nozzles available on the market, and the liquid nozzles all have a water inlet end 102, a delivery channel and a nozzle hole 103, and the water inlet end 102 is used to deliver liquid into the delivery channel and finally spray it out from the nozzle hole 103, wherein the delivery channel has different configurations according to different types of nozzles. The flexible filter net 2 covers the water inlet end 102, and a plurality of filter holes 204 are arranged on the flexible filter net 2, that is, the liquid needs to pass through a plurality of filter holes 204 to enter the delivery channel through the water inlet end 102, and then filter the liquid entering the nozzle 1, to prevent impurities in the liquid from clogging the delivery channel and the nozzle hole 103 in the nozzle 1;

[0052] Specifically, the flexible filter mesh 2 will be deformed by the influence of the liquid flow pressure. When the liquid of the set pressure (the default is the pressure required for the normal use of the nozzle 1, generally high pressure) is transported to the nozzle hole 103 through the flexible filter mesh 2, the pressure of the liquid drives the flexible filter mesh 2 to shrink inward, and the filter hole 204 will be deformed. Along the inward concave direction, the aperture of the filter hole 204 at the end of the outer side of the depression (close to the side of the delivery channel) will become larger, and the aperture of the filter hole 204 at the end of the inner side of the depression (away from the side of the delivery channel) will become smaller. The aperture of the filter hole 204 at the minimum aperture is smaller than the aperture of the nozzle hole 103 and the size of the liquid delivery channel in the body 101, so that foreign matter smaller than the aperture of the nozzle hole 103 and the size of the liquid delivery channel in the body 101 cannot pass through the filter hole 204, and then foreign matter that may cause blockage of the nozzle hole 103 and the delivery channel is blocked in the filter hole 204, thereby realizing the anti-blocking function of the nozzle 1.

[0053] When the liquid is less than the set pressure (the water pressure when cleaning the anti-clogging nozzle structure, generally normal pressure), or when no liquid passes through the flexible filter screen 2 (when the nozzle stops working), the flexible filter screen 2 will rebound and return to its original state. At this time, the deformed filter hole 204 will also rebound and return to its original state. In the process of rebounding, foreign matter trapped at the minimum diameter of the flexible filter screen 2 will be peeled off, so that the foreign matter will be separated from the flexible filter screen 2 and washed away by the cleaning liquid, or washed away by the water flow when the nozzle 1 works next time.

[0054] In addition, when the cleaning liquid is transported from the nozzle hole 103 to the delivery channel and the water inlet end 102, when the nozzle hole 103 is blocked, the cleaning liquid will first clear the nozzle hole 103, and then pass through the delivery channel and flow to the flexible filter 2. When the water pressure of the cleaning liquid reaches the set value, the pressure of the cleaning liquid will drive the flexible filter 2 to expand outward. At this time, the filter hole 204 will be deformed. Along the outward convex direction, the aperture of the filter hole 204 located on the outer side of the convex (away from the side of the delivery channel) will become larger, and the aperture of the filter hole 204 located on the inner side of the convex (close to the side of the delivery channel) will become smaller. That is, when the nozzle 1 is in normal use, the smallest aperture of the filter hole 204 will be transformed into the largest aperture, and the foreign matter blocked at the smallest aperture of the filter hole 204 when the nozzle 1 is in normal use can be released and taken away by the cleaning liquid, so that the nozzle 1 can be backwashed, and it has an excellent backwashing effect.

[0055] The anti-clogging nozzle structure provided by the utility model is suitable for use with liquid nozzles of various models and sizes, and utilizes the flexible deformation ability of the flexible filter screen 2 to realize the functions of anti-clogging of the nozzle 1, automatic stripping of foreign matter on the flexible filter screen 2, and backwashing of the nozzle 1 and the flexible filter screen 2. The clogging of the nozzle 1 is greatly reduced, the number of manual cleaning and maintenance is reduced, and the maintenance-free time of the product is increased. At the same time, the maintenance difficulty can be simplified (no need to disassemble the nozzle 1), and the stability of the product can be improved. In addition, the entire anti-clogging nozzle structure only adds a flexible filter screen 2 to the water inlet end 102 of the conventional nozzle, and the structure is simple and reliable, the cost is low, and it is easy to promote and use. In addition, in conjunction with the sewage discharge mechanism 7, low-pressure water cleaning can be achieved, that is, the sewage valve 702 is opened to allow the sewage pipe 701 to flow. At this time, low-pressure water lower than the set pressure, such as normal pressure, is transported into the water supply cavity 401 through the water inlet mechanism 6. At this time, the flexible filter screen 2 will be in its original state, and the filter hole 204 will not be concavely deformed. At this time, the foreign matter retained on the flexible filter screen 2 is loosely matched with the flexible filter screen 2, unlike when the filter hole 204 is in a concave deformation. As a result, the low-pressure cleaning water can directly take the foreign matter away from the flexible filter screen 2, and it will be washed away by the cleaning liquid and finally discharged from the sewage discharge pipe 701.

[0056] In one embodiment, the flexible filter screen 2 is made of flexible rubber, nylon or thin steel sheet.

[0057] In one embodiment, the filter holes 204 are arranged along the direction of water flow when the nozzle 1 sprays water, and are respectively a small-diameter end 2041 and a large-diameter end 2042;

[0058] When the flexible filter screen 2 is concave and shrinks, the aperture of the small-diameter end 2041 of the filter hole 204 is smaller than the aperture of the nozzle hole 103 and the size of the liquid delivery channel in the body 101. In this embodiment, the filter hole 204 is not a cylindrical hole, which makes it easier to deform the filter hole 204. On the other hand, when the nozzle 1 is in normal use, it is convenient to make the small-diameter end 2041 smaller when the flexible filter screen 2 is slightly deformed, thereby improving the filtering effect, and at the same time making the large-diameter end 2042 larger to ensure the delivery stability. On the other hand, when the nozzle 1 is backwashed, the cleaning liquid flows from the large-diameter end 2042 to the small-diameter end 2041, which can form a pressurized force for the cleaning liquid, quickly flush out the debris that is difficult to flush, and improve the backwashing effect.

[0059] In one of the preferred embodiments, the filter hole 204 is a conical hole structure, that is, the inner diameter of the filter hole 204 gradually increases from the small-diameter end 2041 to the large-diameter end 2042, and the size transitions linearly, and the hole walls from the small-diameter end 2041 to the large-diameter end 2042 are consistent, that is, the filter hole 204 has a conical outer wall, and the filter hole 204 has a convex structure. At this time, when the flexible filter net 2 and the filter hole 204 are deformed inwardly by concave contraction, the two adjacent conical outer walls will move closer to each other, and will clamp or engage relatively large foreign objects, and when the flexible filter net 2 and the filter hole 204 are deformed by convex expansion, the two adjacent conical outer walls will move away from each other, releasing or peeling off the clamped or engaged foreign objects.

[0060] In one preferred embodiment, the flexible filter screen 2 is a cylindrical structure, and the flexible filter screen 2 comprises a hollow cylindrical side wall 201, one end of the cylindrical side wall 201 is a closed end 202, and the other end is an open end 203;

[0061] The open end 203 cooperates with the water inlet end 102;

[0062] Several of the filter holes 204 are arranged on the cylindrical side wall 201. In this embodiment, on the one hand, the number of filter holes 204 on the flexible filter screen 2 can be greatly increased, thereby increasing the liquid delivery channel area of ​​the filter holes 204 on the flexible filter screen 2, avoiding excessive burden on the pressure of the liquid source, and ensuring that there are still enough filter holes 204 for normal use when some of the filter holes 204 are blocked, thereby improving reliability. On the other hand, the cylindrical side wall 201 can also ensure that the cleaning liquid flows through the arc surface of the cylindrical side wall 201 when low-pressure water automatic cleaning is performed, and foreign matter is not brought into the filter holes 204. In this embodiment, the deformation of the flexible filter screen 2 is mainly the deformation of the cylindrical side wall 201. Preferably, the filter holes 204 are arranged on the closed end 202, further increasing the number of the filter holes 204. In addition, when used specifically, the cylindrical side wall 201 can extend into the main flow channel of the liquid, that is, the water supply cavity 401, so that the liquid can enter the water inlet end 102 through the flexible filter screen 2. In a preferred embodiment, the axis of the cylindrical side wall 201 is located at the upper part of the water supply cavity 401, which can ensure that in the low-pressure water washing mode, foreign matter will not be completely washed directly onto the downstream flexible filter screen 2 by the water flow, but will flow into the sewage discharge mechanism 7 through the lower part of the water supply cavity 401.

[0063] In other embodiments, the flexible filter screen 2 may also adopt other structures, such as a flat plate structure or a semicircular structure provided on the water inlet end 102 .

[0064] In one preferred embodiment, the anti-clogging nozzle structure further includes a mounting seat 3, which is arranged on the spray ring 4 and may be integrally connected to the spray ring 4, such as integrally formed or welded, or may be detachably connected by a fastener, such as a threaded connection, or fastened by a bolt. Specifically, a mounting hole 301 is provided on the mounting seat 3, and the mounting hole 301 is used to install the nozzle 1, and the mounting hole 301 is connected to a water supply cavity 401;

[0065] The mounting hole 301 is provided with a step 3011 on the side close to the water supply cavity 401, that is, the mounting hole 301 is a step hole, and the side close to the water supply cavity 401 is a small hole, and the flexible filter screen 2 is provided with a fixing ring 205, and the mesh body and the filter hole 204 of the flexible filter screen 2 are both arranged in the ring of the fixing ring 205; the body 101 is fastened in the mounting hole 301 through a fastening structure, specifically fastened in the large hole, and the end of the body 101 close to the water inlet end 102 abuts the fixing ring 205 on the step 3011. In this embodiment, the flexible filter screen 2 is fixed in the mounting hole 301 by the nozzle 1, and the liquid enters the water inlet end 102 from the water supply cavity 401 through the small hole and the flexible filter screen 2 in sequence. At this time, the disassembly and assembly of the flexible filter screen 2 only requires the nozzle 1 to be removed from the mounting hole 301 first, so that the disassembly and assembly of the flexible filter screen 2 is extremely convenient and quick. In the embodiment where the flexible filter screen 2 is a cylindrical structure, the fixing ring 205 is disposed at the open end 203 of the flexible filter screen 2 , and the cylindrical side wall 201 extends into the water supply cavity 401 through the small hole of the mounting hole 301 .

[0066] In other embodiments, the body 101 and the flexible filter screen 2 may also be an integrated structure, such as integrally formed or welded to each other, or the flexible filter screen 2 and the body 101 may be fastened together by fasteners, and then the body 101 may be fixedly connected to the mounting hole 301 .

[0067] In one embodiment, the fastening structure is a threaded structure, which includes an internal thread arranged on the inner wall of the mounting hole 301 and an external thread arranged on the outer wall of the main body 101, so that the assembly and disassembly of the main body 101 and the mounting hole 301 are extremely convenient and quick, and stable and reliable after disassembly.

[0068] In one embodiment, the fixing ring 205 is made of a hard material, so that the fixing ring 205 can be stably and reliably fixed on the step 3011 .

[0069] The utility model also provides a high-pressure backwashing device, which is used to backwash the above-mentioned anti-clogging nozzle structure, and is mainly used to clear foreign matter in the delivery channel and nozzle hole 103 of the nozzle 1 and the filter hole 204 in the flexible filter net 2. The high-pressure backwashing device includes a nozzle joint 501 and a water supply mechanism for providing a set pressure liquid to the nozzle joint 501; preferably, the water supply mechanism includes a high-pressure pipe 502 and a water joint 503, and the other end of the water joint 503 is directly connected to the high-pressure water supply device 9. Among them, the high-pressure pipe 502 can be a steel pipe or a flexible pipe, preferably a high-pressure rubber pipe. When performing high-pressure backwashing, the water inlet valve 602 on the water inlet mechanism 6 is closed, and the sewage valve 702 of the sewage discharge mechanism 7 is opened.

[0070] The nozzle joint 501 is detachably mounted on the nozzle 1. After being mounted on the nozzle 1, it is used to deliver cleaning liquid to the water inlet end 102 through the nozzle hole 103, that is, high-pressure cleaning liquid delivers cleaning liquid to the nozzle joint 501 through the water supply mechanism, and then the cleaning liquid passes through the nozzle hole 103, the delivery channel, the water inlet end 102 and the flexible filter screen 2 in sequence, thereby improving the dredging of foreign matter in the nozzle hole 103, the delivery channel and the filter hole 204;

[0071] When the liquid of set pressure is delivered to the water inlet end 102 through the nozzle hole 103 , the pressure of the cleaning liquid drives the flexible filter screen 2 to expand outward, and the aperture of the filter hole 204 becomes larger, making it easier to remove foreign matter in the filter hole 204 .

[0072] In one of the embodiments, the nozzle joint 501 and the nozzle 1 are detachably installed using a quick-release structure, thereby greatly facilitating the disassembly and assembly speed of the nozzle joint 501 and the nozzle 1, wherein the water joint 503 and the water supply device 9 can also be connected using a quick-release structure. Specifically, symmetrical bevel grooves are provided on the corresponding two sides of the outer surface of the mounting seat 3, and the nozzle joint 501 is provided with a quick-lock joint that is detachably engaged with the bevel. The quick-release structure can also adopt other existing structures. Specifically, since the entire annular spray device does not need to work during high-pressure backwashing, the joint 605 can be disconnected from the water supply device 9 of the sprayer, and then the water joint 503 can be connected to the water supply device 9, that is, the water inlet head 6 and the high-pressure backwashing device 5 use the same water supply device 9 to simplify the structure.

[0073] The utility model also provides a sprayer, comprising a sprayer body 8 and a sprayer annular spray device arranged at the nozzle of the sprayer body 8, wherein the sprayer annular spray device is connected to a water supply device 9, and the water supply device 9 is used to provide a water source to a water inlet mechanism or a high-pressure backwashing device 5. The water supply device 9 includes a water source and a high-pressure pump, wherein the input end of the high-pressure pump is connected to the water source, and the output end is used to connect to the water inlet mechanism or the high-pressure backwashing device 5. The sprayer body 8 can be either fixed or mobile.

[0074] The above is only an embodiment and does not limit the present invention in any way. Any person skilled in the art can make many possible changes, modifications or modifications to the present invention without departing from the scope of the present invention by using the above disclosed technical contents. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the present invention should fall within the scope of protection of the present invention.

Claims

1. A sprayer ring spray device, characterized in that: It comprises a spray ring (4), a water inlet mechanism (6) and a sewage discharge mechanism (7); The spray ring (4) is hollow inside and is provided with a water supply cavity (401); the spray ring (4) is provided with a plurality of anti-clogging nozzle structures arranged along the circumference; the anti-clogging nozzle structures are connected to the water supply cavity (401); and the anti-clogging nozzle structures are provided with a filter structure for retaining foreign matter in the water supply cavity (401); The water inlet mechanism (6) comprises a water inlet pipe (601) connected to the upper end of the water supply cavity (401), and the sewage discharge mechanism (7) comprises a sewage discharge pipe (701) connected to the lower end of the water supply cavity (401) and a sewage discharge valve (702) arranged on the sewage discharge pipe (701).

2. The annular spray device for a sprayer according to claim 1, characterized in that: The water inlet mechanism (6) also includes a water inlet valve (602), a pressure regulating valve (603) and a water pressure monitoring device (604) arranged on the water inlet pipe (601).

3. The annular spray device of the sprayer according to claim 1, characterized in that: The spray rings (4) are provided in a plurality, the plurality of spray rings (4) are coaxially arranged, and the sizes of the plurality of spray rings (4) are inconsistent; A plurality of spray rings (4) are arranged at intervals along the axial direction.

4. The annular spray device for a sprayer according to claim 3, characterized in that: A plurality of the spray rings (4) are connected to the water inlet pipe (601) via a water inlet connecting pipe (402); A plurality of the spray rings (4) are connected to the sewage pipe (701) via sewage connection pipes (403).

5. The annular spray device for a sprayer according to claim 3, characterized in that: It also includes a fixed connection plate (404) for connecting and fixing a plurality of the spray rings (4).

6. The annular spray device for a sprayer according to any one of claims 1 to 5, characterized in that: The anti-clogging nozzle structure comprises a nozzle (1) and a filter screen structure, wherein the filter screen structure is a flexible filter screen (2); The nozzle (1) comprises a body (101) and a water inlet end (102), a delivery channel and a nozzle hole (103) which are sequentially connected and arranged on the body (101); the flexible filter net (2) covers the water inlet end (102); and a plurality of filter holes (204) are arranged on the flexible filter net (2); When the liquid at a set pressure is transported through the flexible filter net (2) to the nozzle hole (103), the pressure of the liquid drives the flexible filter net (2) to shrink inwardly, and at this time, the aperture of the filter hole (204) at the minimum aperture is smaller than the aperture of the nozzle hole (103) and the size of the liquid transport channel in the body (101); The flexible filter screen (2) is arranged between the water inlet end (102) and the water supply cavity (401).

7. The annular spray device for a sprayer according to claim 6, characterized in that: The filtering holes (204) are arranged in sequence along the direction of water flow when the nozzle (1) sprays water, and are arranged at a small-diameter end (2041) and a large-diameter end (2042); When the flexible filter net (2) is concave and shrinks, the aperture of the small-diameter end (2041) of the filter hole (204) is smaller than the aperture of the nozzle hole (103).

8. The annular spray device for a sprayer according to claim 7, characterized in that: The flexible filter screen (2) comprises a cylindrical side wall (201) with a hollow interior, one end of the cylindrical side wall (201) being a closed end (202) and the other end being an open end (203); The open end (203) cooperates with the water inlet end (102); A plurality of filtering holes (204) are arranged on the cylindrical side wall (201).

9. The annular spray device for a sprayer according to claim 6, characterized in that: It also includes a high-pressure backwashing device (5), the high-pressure backwashing device (5) including a nozzle joint (501) and a water supply mechanism for providing a set pressure liquid to the nozzle joint (501); The nozzle joint (501) is detachably mounted on the nozzle (1) and is used to deliver cleaning liquid to the water inlet end (102) through the nozzle hole (103); When liquid at a set pressure is delivered to the water inlet end (102) through the nozzle hole (103), the pressure of the cleaning liquid drives the flexible filter screen (2) to expand outward, the aperture of the filter hole (204) becomes larger, and foreign matter in the filter hole (204) is discharged into the water supply cavity (401).

10. A sprayer, characterized in that: The invention comprises a sprayer body (8) and a sprayer annular spray device as claimed in any one of claims 1 to 9 arranged at the nozzle of the sprayer body (8), wherein the sprayer annular spray device is connected to a water supply device (9).

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