Cleaning spray head of spray rod, spray rod device of closestool and closestool

Abstract

The cleaning spray head of the spray rod comprises a first spray head used for at least spraying cleaning foam to the surface of the spray rod, the first spray head is provided with a liquid inlet channel, a first mixing cavity, a first spray opening and a first air suction opening, and the first spray opening and the first air suction opening are communicated with the first mixing cavity. A first acceleration hole is formed between the liquid inlet channel and the first mixing cavity, when a foaming solution enters the liquid inlet channel, the foaming solution is accelerated by the first acceleration hole and then enters the first mixing cavity, so that the first mixing cavity generates negative pressure and sucks air through the first air suction port, and the air and the foaming solution are mixed to generate foam. The first spray head can foam in a self-suction mode, so that an air pump does not need to be configured, the cost, the space and the performance are optimized while efficient foaming is guaranteed, and the practicability and the economical efficiency of the technology are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bathroom, in particular to a kind of cleaning spray head of spray rod and the spray rod device and closestool of closestool. BACKGROUND

[0002] Traditional spray rod self-cleaning technology usually uses self-cleaning spray head to spray clean water to the surface of spray rod, and removes the dirt on the surface of spray rod by flushing with clean water. However, the effect of clean water cleaning is often not ideal. In order to improve the cleaning effect, the existing technology introduces a foam cleaning method, which uses foam with strong adhesion and permeability to effectively wrap and decompose stubborn dirt on the surface of spray rod, especially grease, dust and other difficult-to-remove pollutants, so as to enhance the cleaning ability of the surface of spray rod. However, using foam cleaning not only requires the provision of a first spray head and a foam solution supply module, but also requires the additional installation of an air pump to generate bubbles by mixing gas generated by the air pump with the foaming solution. This design not only increases cost and working noise, but also occupies more space, which is not conducive to compact layout of the structure. SUMMARY

[0003] The utility model provides a kind of cleaning spray head of spray rod and the spray rod device and closestool of closestool in view of the technical problems existing in prior art, which can be foamed in self-suction mode, so that air pump does not need to be set.

[0004] The utility model discloses a kind of cleaning spray head of spray rod, including the first spray head for at least spraying cleaning foam to the surface of spray rod, the first spray head is equipped with liquid inlet passage, first mixing cavity, and the first suction port and first spout that communicate first mixing cavity, liquid inlet passage is equipped with first acceleration hole between first mixing cavity, when entering foaming solution in liquid inlet passage, foaming solution is accelerated after entering first mixing cavity by first acceleration hole, so that first mixing cavity generates negative pressure and inhales air by first suction port, air and foaming solution are mixed to generate foam.

[0005] In a preferred embodiment, the first mixing cavity is a flow channel structure, and the two ends of the length direction of the first mixing cavity are a first end and a second end, respectively. The first acceleration hole is located at the first end of the first mixing cavity, and the second end of the first mixing cavity is closed. The first suction port and the first spout are located on the wall between the first end and the second end of the first mixing cavity, and the first spout is one. The first suction port is closer to the first acceleration hole than the first spout.

[0006] In a preferred embodiment, the wall body where the first nozzle is located is an inclined wall body to tilt the bubbles to the spray rod; the wall body where the first air inlet is located faces the spray rod; the first spray head comprises a first pipe part and a second pipe part connected or integrally formed together and at a preset angle, the first pipe part is provided with the liquid inlet channel, the second pipe part is provided with the first mixing cavity, the first air inlet and the first nozzle, and the transition part between the first pipe part and the second pipe part is provided with the first acceleration hole.

[0007] In a preferred embodiment, the second spray head for spraying cleaning water to the surface of the spray rod is distributed along the extension direction of the spray rod with the first spray head, and the cleaning position of the second spray head to the spray rod is the same as that of the first spray head to the spray rod.

[0008] In a preferred embodiment, the second spray head is provided with a water inlet channel, a second mixing cavity, and a second nozzle and a second air inlet connected with the second mixing cavity, the second acceleration hole is arranged between the water inlet channel and the second mixing cavity, the clean water flowing into the water inlet channel is accelerated through the second acceleration hole and then enters the second mixing cavity, so that the second mixing cavity generates negative pressure and sucks in air through the second air inlet, and the air and the clean water are mixed to form bubble water.

[0009] In a preferred embodiment, the second mixing cavity is in a flow channel type structure, and the two ends in the length direction of the second mixing cavity are a first end and a second end respectively, the second acceleration hole is located at the first end of the second mixing cavity, the second end of the second mixing cavity is closed, the second air inlet and the second nozzle are located on the wall body between the first end and the second end of the first mixing cavity, and the second nozzle is one, and the second air inlet is closer to the second acceleration hole than the second nozzle.

[0010] In a preferred embodiment, the wall body where the second nozzle is located is an inclined wall body to tilt the water to the spray rod; the wall body where the second air inlet is located faces the spray rod; the second spray head comprises a third pipe part and a fourth pipe part connected or integrally formed together and at a preset angle, the third pipe part is provided with the water inlet channel, the fourth pipe part is provided with the second mixing cavity, the second air inlet and the second nozzle, and the transition part between the third pipe part and the fourth pipe part is provided with the second acceleration hole.

[0011] The utility model further provides a spray rod device of closestool, including spray rod, still include the cleaning spray head of spray rod as above-mentioned utility model, the first nozzle of first spray head is located above or side of spray rod.

[0012] In a preferred embodiment, the spray rod is slidably arranged in the fixing seat along the length direction, and the cleaning spray head of the spray rod is installed on the fixing seat.

[0013] In a preferred embodiment, the cleaning nozzle of the spray bar is detachably snapped onto the mounting base.

[0014] This utility model also provides a toilet, including a toilet body, a foam liquid supply module, and a spray bar device as described in this utility model above, wherein the outlet of the foam liquid supply module is connected to the inlet channel of the first spray head.

[0015] In a preferred embodiment, a switching valve is also included. The cleaning nozzle of the spray bar further includes a second nozzle for spraying cleaning water onto the surface of the spray bar. The second nozzle is provided with a water inlet channel and a second nozzle. The switching valve has a first outlet and a second outlet that can switch the water output. The first outlet is connected to the water inlet of the foam liquid supply module, and the second outlet is connected to the water inlet channel of the second nozzle.

[0016] In a preferred embodiment, the system further includes a switching valve and a three-way pipe. The switching valve has a first outlet and a second outlet that can switch the water flow. The first outlet is connected to the inlet of the foam liquid supply module. The three-way pipe has a first port, a second port, and a third port that are interconnected. The first port is connected to the second outlet, the second port is connected to the outlet of the foam diluent module, and the third port is connected to the inlet channel of the first nozzle.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Because the first nozzle of this utility model is provided with the aforementioned liquid inlet channel, first mixing chamber, and first nozzle and first air intake connecting the first mixing chamber, and a first acceleration hole is provided between the liquid inlet channel and the first mixing chamber, when the foaming solution flows into the liquid inlet channel, the foaming solution is accelerated through the first acceleration hole and enters the first mixing chamber, causing a negative pressure in the first mixing chamber and drawing in air through the first air intake. The air mixes with the foaming solution to produce foam. Therefore, the first nozzle of this utility model can foam by self-aspiration, thus eliminating the need for an air pump, making the overall structure more compact, easier to install and layout, and eliminating the need for an air pump and its related components, reducing equipment manufacturing costs and maintenance expenses, eliminating the noise generated by the air pump during operation, improving the quietness and comfort of the working environment, reducing equipment failure rate, improving system stability and service life, and eliminating the need for air pump power consumption, reducing energy consumption, and better conforming to the green and environmentally friendly design concept. In summary, this utility model achieves cost, space and performance optimization while ensuring high-efficiency foaming, significantly improving the practicality and economy of the technology.

[0019] 2. The first mixing cavity is of a flow channel structure, having opposite first and second ends, the first accelerating hole is located at the first end of the first mixing cavity, the second end of the first mixing cavity is closed, the first suction port and the first spray port are located on the wall between the first end and the second end of the first mixing cavity, and the first spray port is one, so that the foam output by the first spray port has a reciprocating swinging effect in the length direction of the first mixing cavity, which can improve the coverage area of the surface of the spray rod, thereby helping to achieve omnidirectional cleaning and improve the cleaning effect.

[0020] 3. As a preferred, the cleaning spray head of the utility model further comprises a second spray head, which can use clean water to wash away the foam and the dirt carried by the foam, ensure that the surface of the spray rod is thoroughly cleaned, and avoid residues. Since the foam can more efficiently clean the spray rod, the clean water washing can complete the final cleaning with only a small amount of clean water, which is beneficial to water saving.

[0021] 4. The second spray head is provided with the water inlet channel, a second mixing cavity, and a second spray port and a second suction port communicating with the second mixing cavity, so that the second spray head can realize self-suction, thereby outputting bubble water, and the bubble water can clean the spray rod, which can enhance the cleaning effect, because the micro-impact force generated when the bubbles burst can help loosen and peel off the dirt on the surface of the spray rod, especially stubborn stains; the bubbles can penetrate into the small gaps or complex structures of the spray rod, and clean areas that are difficult to reach by ordinary clean water. In particular, the closed design of the second end of the second mixing cavity makes the bubble water output by the second spray port have a swinging effect, which can improve the coverage area of the surface of the spray rod, thereby helping to achieve omnidirectional cleaning and improve the cleaning effect.

[0022] The utility model will be further described in detail in connection with the drawings and examples; but the cleaning spray head of the spray rod and the spray rod device and the closestool of the utility model are not limited to the examples. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the exploded schematic view of the closestool spray rod device of the utility model of example one;

[0024] Figure 2 is the three-dimensional structure schematic view of the first spray head of the utility model of example one;

[0025] Figure 3 is the sectional view of the first spray head of the utility model of example one;

[0026] Figure 4 is the three-dimensional structure schematic view of the second spray head of the utility model of example one;

[0027] Figure 5 is the sectional view of the second spray head of the utility model of example one;

[0028] Figure 6 is the perspective view of the spray rod device of the closest utility model of embodiment one;

[0029] Figure 7 is the top view of the spray rod device of the closest utility model of embodiment one;

[0030] Figure 8 is the sectional view of the spray rod device of the closest utility model of embodiment one Figure 1 ;

[0031] Figure 9 is the sectional view of the spray rod device of the closest utility model of embodiment one Figure 2 ;

[0032] Figure 10 is the partial enlarged view of embodiment one Figure 9 ;

[0033] Figure 11 is the perspective view of the closest utility model of embodiment one (partially embodied)

[0034] Figure 12 is the partial enlarged view of embodiment one Figure 11 ;

[0035] Figure 13 is the perspective view of the spray rod device of the closest utility model of embodiment two;

[0036] Figure 14 is the perspective view of the closest utility model of embodiment two (partially embodied)

[0037] In the figure, 1, first spray head; 11, liquid inlet channel; 12, first mixing cavity; 13, first spray opening; 14, first air suction opening; 15, first acceleration hole; 16, first pipe part; 17, second pipe part; 2, second spray head; 21, water inlet channel; 22, second mixing cavity; 23, second spray opening; 24, second air suction opening; 25, second acceleration hole; 26, third pipe part; 27, fourth pipe part; 3, spray rod; 4, fixed seat; 41, first insertion slot; 42, first elastic clamping jaw; 43, second insertion slot; 44, second elastic clamping jaw; 5, closest utility model of toilet body; 6, foam liquid supply module; 7, first electromagnetic valve; 8, instant heating module; 9, second electromagnetic valve; 10, three-way pipe. DETAILED DESCRIPTION

[0038] In the utility model, for the terms "first", "second" and the like are only used to distinguish similar objects, and are not used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. In the description, the orientation or positional relationship indicated by "up", "down", "left", "right", "front", "back", "inner", "outer", "top / bottom end" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model, and is not used to indicate or imply that the device must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the protection scope of the utility model. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] Embodiment one

[0040] Please refer to Figures 1-10 As shown in the figure, the utility model discloses a cleaning nozzle of spray rod, including the first nozzle 1 for at least spraying cleaning foam to the surface of spray rod 3, the first nozzle 1 is equipped with liquid inlet channel 11, first mixing chamber 12, and the first nozzle 13 and first air inlet 14 that communicate first mixing chamber 12, and is equipped with first accelerating hole 15 between liquid inlet channel 11 and first mixing chamber 12. When the foaming solution enters the liquid inlet channel 11, the foaming solution enters the first mixing chamber 12 after accelerating through the first accelerating hole 15, so that the first mixing chamber 12 generates negative pressure and inhales air through the first air inlet 14, the air mixes with the foaming solution to generate foam, and the foam is output from the first nozzle 13 and cleans the surface of the spray rod 3. Therefore, the first nozzle 1 of the utility model can foam in a self-suction manner, so that a gas pump is not needed, and the optimization of cost, space and performance is realized while ensuring efficient foaming.

[0041] Preferably, the first mixing chamber 12 is of a flow channel type structure, both ends of the length direction of the first mixing chamber 12 are a first end and a second end respectively, the first accelerating hole 15 is located at the first end of the first mixing chamber 12, the second end of the first mixing chamber 12 is closed, the first air inlet 14 and the first nozzle 13 are located on the wall body between the first end and the second end of the first mixing chamber 12, and the first nozzle 13 is one, and the first air inlet 14 is closer to the first air inlet 14 than the first nozzle 13. By adopting this arrangement, part of the foam / liquid in the first mixing chamber 12 is directly sprayed out from the first nozzle 13, the remaining part flows to the closed end and then reversely flows to the first nozzle 13 to collide with new foam / liquid, so that the foam / liquid is sprayed out from the first nozzle 13 at multiple different angles, and finally forms a reciprocating swinging effect along the length direction (i.e. left-right direction) of the first mixing chamber 12. In other embodiments, the first nozzle is provided as a plurality of first nozzles, and the plurality of first nozzles are distributed along the length direction of the first mixing chamber.

[0042] The wall body where the first spout 13 is located is an inclined wall body, so as to spray bubbles to the spray rod 3; and the wall body where the first air inlet 14 is located is substantially a horizontal wall body and faces the spray rod 3. The first spray head 1 specifically comprises a first pipe portion 16 and a second pipe portion 16 which are connected or integrally formed together and present a preset included angle, the first pipe portion 16 is provided with the liquid inlet channel 11, the second pipe portion 16 is provided with the first mixing cavity 12, the first air inlet 14 and the first spout 13, and the transition portion between the first pipe portion 16 and the second pipe portion 16 is provided with the first accelerating hole 15. During installation, the first pipe portion 16 is located at the left side or the right side of the spray rod 3, the second pipe portion 16 spans above the spray rod 3, the inclined wall body where the first spout 13 is located is substantially the front half of the bottom wall of the second pipe portion 16, so that the first spout 13 sprays bubbles to the top surface of the spray rod 3 at a preset inclined angle α; and the wall body where the first air inlet 14 is located is substantially the rear half of the bottom wall of the second pipe portion 16. The preset angle is preferably 90°, so that the first spray head 1 is substantially in the shape of an L letter.

[0043] As a preferred mode, the utility model also comprises a second spray head 2 for spraying cleaning water to the surface of the spray rod 3, the second spray head 2 is distributed along the extension direction of the spray rod 3 with the first spray head 1, and the cleaning position of the second spray head 2 to the spray rod 3 is same or substantially same as the cleaning position of the first spray head 1 to the spray rod 3.

[0044] As shown in Figure 4 , Figure 5 , the second spray head 2 is provided with a water inlet channel 21, a second mixing cavity 22, and a second spout 23 and a second air inlet 24 which are communicated with the second mixing cavity 22, the second accelerating hole 25 is arranged between the water inlet channel 21 and the second mixing cavity 22, the clean water flowing into the water inlet channel 21 is accelerated through the second accelerating hole 25 and then enters the second mixing cavity 22, so that the second mixing cavity 22 generates negative pressure and sucks in air through the second air inlet 24, the air mixes with the clean water to form bubble water.

[0045] Preferably, the second mixing cavity 22 is in the flow channel type structure, the length direction of the second mixing cavity 22 is provided with a first end and a second end, the second accelerating hole 25 is located at the first end of the second mixing cavity 22, the second end of the second mixing cavity 22 is closed, the second air inlet 24 and the second spout 23 are located on the wall body between the first end and the second end of the first mixing cavity 12, and the second spout 23 is one. By adopting this arrangement, part of the high-speed water flow flowing into the second mixing cavity 22 directly sprays out from the second spout 23, the remaining part flows to the closed end and then reversely flows to the second spout 23 and collides with the new water flow, so that the water flow sprays out at multiple different angles from the first spout 13, and finally forms the effect of reciprocating swing along the length direction (i.e. left-right direction) of the second mixing cavity 22. In other embodiments, the second spout is provided with multiple second spouts, and the multiple second spouts are arranged along the length direction of the second mixing cavity.

[0046] The wall body where the second spout 23 is located is an inclined wall body to tilt water out of the spray rod 3; the wall body where the second air inlet 24 is located is a horizontal wall body and faces the spray rod 3. The second spray head 2 specifically comprises a third pipe portion 26 and a fourth pipe portion 27 which are connected or integrally formed together and present a preset included angle, the third pipe portion 26 is provided with the water inlet channel 21, the fourth pipe portion 27 is provided with the second mixing cavity 22, the second air inlet 24 and the second spout 23, and the transition portion between the third pipe portion 26 and the fourth pipe portion 27 is provided with the second acceleration hole 25. When installed, the third pipe portion 26 is located on the left side or the right side of the spray rod 3, the fourth pipe portion 27 spans above the spray rod 3, the inclined wall body where the second spout 23 is located is approximately the front half of the bottom wall of the fourth pipe portion 27, so that the second spout 23 tilts water out of the top surface of the spray rod 3 at a preset angle α; the wall body where the second air inlet 24 is located is approximately the rear half of the bottom wall of the fourth pipe portion 27. The preset angle is preferably 90°, so the second spray head 2 is approximately L-shaped.

[0047] The actual application state of the cleaning spray head of the spray rod of the utility model is shown in Figures 6-10 The second pipe portion 16 of the first spray head 1 and the fourth pipe portion 27 of the second spray head 2 are respectively arranged along the left-right direction of the spray rod 3 and are respectively located above the spray rod 3, and the first pipe portion 16 of the first spray head 1 and the third pipe portion 26 of the second spray head 2 are respectively located on the left side and the right side of the spray rod 3.

[0048] When cleaning the spray rod 3, the foaming solution is first input into the liquid inlet channel 11 of the first spray head 1, the foaming solution is accelerated by the first acceleration hole 15 and then enters the first mixing cavity 12 at high speed, so that the first mixing cavity 12 generates negative pressure and air is sucked in through the first air inlet 14, the air mixes with the foaming solution to generate foam, the foam is sprayed out of the first spout 13 and cleans the upper surface of the spray rod 3. As described above, the foam sprayed out of the first spout 13 swings left and right, can cover the upper surface of the spray rod 3 in the left-right direction, and cleans the spray rod 3 in all directions, thereby improving the cleaning effect.

[0049] After the foam cleaning is completed, clean water is input into the water inlet channel 21 of the second spray head 2, the clean water is accelerated by the second acceleration hole 25 and then enters the second mixing cavity 22 at high speed, so that the second mixing cavity 22 generates negative pressure and air is sucked in through the second air inlet 24, the air mixes with the clean water to form bubble water, the bubble water is sprayed out of the second spout 23 and cleans the upper surface of the spray rod 3, the bubble water is used to flush away the foam and the dirt carried by the foam, so that the surface of the spray rod 3 is thoroughly cleaned and residual dirt is avoided. The bubble water sprayed out of the second spout 23 also swings left and right, can completely cover the upper surface of the spray rod 3 in the left-right direction, and achieves the effect of cleaning in all directions. During the cleaning process, the spray rod 3 moves forward and / or backward synchronously, so that the upper surface of the entire spray rod 3 is cleaned in all directions.

[0050] Please refer to Figures 1-10As shown in the drawing, the utility model discloses a kind of spray rod devices of closestool, including spray rod 3, still including the cleaning nozzle of spray rod of the utility model as described above, the first spout 13 of first nozzle 1 is located above or side of spray rod 3.Specifically, the second pipe portion 16 of first nozzle 1 and the fourth pipe portion 27 of second nozzle 2 are respectively arranged along the left and right direction of spray rod 3, and are respectively located above spray rod 3, and the first pipe portion 16 of first nozzle 1 and the third pipe portion 26 of second nozzle 2 are respectively located at the left and right sides of spray rod 3.

[0051] The utility model further includes fixed seat 4, and spray rod 3 is slidably arranged in fixed seat 4 along the length direction, and the cleaning nozzle of spray rod is installed in fixed seat 4.Specifically, spray rod 3 is slidably arranged in fixed seat 4 along the front and back direction, and the cleaning nozzle of spray rod is detachably buckled and connected in fixed seat 4.Specifically, fixed seat 4 front end corresponds first nozzle 1 and is equipped with first slot 41, and the slot of first slot 41 is located in one side of the left and right direction of fixed seat 4, and is equipped with at least a pair of first elastic clamping jaw 42, and the second pipe portion 16 of first nozzle 1 is inserted into first slot 41 from the slot of first slot 41, and is clamped by first elastic clamping jaw 42, to prevent falling off.Rationally, fixed seat 4 front end corresponds second nozzle 2 and is equipped with second slot 43, and the slot of second slot 43 is located in the other side of the left and right direction of fixed seat 4, and is equipped with at least a pair of second elastic clamping jaw 44, and the fourth pipe portion 27 of second nozzle 2 is inserted into second slot 43 from the slot of second slot 43, and is clamped by second elastic clamping jaw 44, to prevent falling off.After first nozzle 1 and second nozzle 2 are installed, first spout 13 and second spout 23 are all arranged obliquely towards spray rod front side.

[0052] The structure and working principle of the cleaning nozzle of the spray rod are described in the foregoing description, which will not be repeated here.

[0053] Please refer to Figures 1-12 As shown in the drawing, the utility model discloses a kind of closestool, for intelligent closestool, it includes closestool body 5, foam liquid supply module 6, and the spray rod device of the closestool of the utility model as described above, and foam liquid supply module 6 provides foaming solution for the liquid inlet passage 11 of first nozzle 1.Specifically, the liquid outlet of foam liquid supply module 6 is connected with the liquid inlet passage 11 of first nozzle 1, but not limited to this, in other embodiments, the liquid outlet of foam liquid supply module is connected with the liquid inlet passage of first nozzle by control valve and corresponding pipeline.

[0054] The foam liquid supply module 6 has a foaming raw liquid storage cavity, at least one mixing cavity, and the foaming raw liquid and water are mixed and diluted through the mixing cavity and then output, which is prior art and will not be repeated herein. The utility model discloses a switch valve, and the switch valve has first water outlet and second water outlet that can switch out water, the first water outlet is connected with the water inlet of foam liquid supply module 6, and the second water inlet is connected with the water inlet channel 21 of second shower nozzle 2.

[0055] Embodiment two

[0056] Please see Figure 13 The utility model discloses a spray rod's cleaning shower nozzle and the spray rod device and closestool of closestool, and the difference with above -mentioned embodiment one is as follows: the spray rod's cleaning shower nozzle only includes first shower nozzle 1, and does not include second shower nozzle 2.

[0057] In order to realize the clean water cleaning function, the utility model discloses a switch valve (i.e. second electromagnetic valve 9) further sets up three -way pipe 10, and the three -way pipe 10 has first port, second port and third port that are connected with one another, the first port is connected with the second water outlet of second electromagnetic valve 9, the second port is connected with the liquid outlet of foam liquid supply module 6, and the third port is connected with the liquid inlet channel 11 of first shower nozzle 1.

[0058] The utility model discloses a spray rod's cleaning shower nozzle and the spray rod device and closestool of closestool, and the difference with above -mentioned embodiment one is as follows: the spray rod's cleaning shower nozzle only includes first shower nozzle 1, and does not include second shower nozzle 2.

[0059] The above -mentioned embodiment is only used to further illustrate the utility model discloses a spray rod's cleaning shower nozzle and the spray rod device and closestool of closestool, but the utility model is not limited to the embodiment, and any simple modification, equivalent change and modification of the above -mentioned embodiment according to the technical essence of the utility model all fall into the protection scope of the utility model technical scheme.

Claims

1. A cleaning spray head for a spray bar comprising a first spray head for spraying at least a cleaning foam onto a surface of the spray bar, characterised in that: The first nozzle is provided with a liquid inlet channel, a first mixing chamber, and a first spout and a first air inlet communicating with the first mixing chamber. A first accelerating hole is arranged between the liquid inlet channel and the first mixing chamber. When the foaming solution flows into the liquid inlet channel, the foaming solution is accelerated by the first accelerating hole and then flows into the first mixing chamber, so that the first mixing chamber generates negative pressure and sucks in air through the first air inlet. The air mixes with the foaming solution to generate foam.

2. A wash nozzle for a spray bar according to claim 1, characterised in that: The first mixing chamber has a flow channel structure, and two ends in the length direction of the first mixing chamber are a first end and a second end, respectively. The first accelerating hole is located at the first end of the first mixing chamber. The second end of the first mixing chamber is closed. The first air inlet and the first spout are located on the wall body between the first end and the second end of the first mixing chamber. The first spout is one. The first air inlet is closer to the first accelerating hole than the first spout.

3. The wash nozzle for a spray bar of claim 1, wherein: The wall body where the first spout is located is an inclined wall body, so as to tilt the foam out of the spray rod. The wall body where the first air inlet is located faces the spray rod. The first nozzle comprises a first pipe part and a second pipe part which are connected or integrally formed together and have a preset included angle. The first pipe part is provided with the liquid inlet channel. The second pipe part is provided with the first mixing chamber, the first air inlet, and the first spout. The transition part between the first pipe part and the second pipe part is provided with the first accelerating hole.

4. A wash nozzle for a spray bar according to any one of claims 1 to 3, characterised in that: The second nozzle is also used for spraying cleaning water to the surface of the spray rod. The second nozzle is distributed along the extension direction of the spray rod with the first nozzle. The cleaning position of the second nozzle on the spray rod is the same as the cleaning position of the first nozzle on the spray rod.

5. A wash nozzle for a spray bar according to claim 4, characterised in that: The second nozzle is provided with a water inlet channel, a second mixing chamber, and a second spout and a second air inlet communicating with the second mixing chamber. A second accelerating hole is arranged between the water inlet channel and the second mixing chamber. The clean water flowing into the water inlet channel is accelerated by the second accelerating hole and then flows into the second mixing chamber, so that the second mixing chamber generates negative pressure and sucks in air through the second air inlet. The air mixes with the clean water to form bubble water.

6. A wash nozzle for a spray bar according to claim 5, characterised in that: The second mixing chamber has a flow channel structure, and two ends in the length direction of the second mixing chamber are a first end and a second end, respectively. The second accelerating hole is located at the first end of the second mixing chamber. The second end of the second mixing chamber is closed. The second air inlet and the second spout are located on the wall body between the first end and the second end of the first mixing chamber. The second spout is one. The second air inlet is closer to the second accelerating hole than the second spout.

7. The wash nozzle for a spray bar of claim 5, wherein: The wall body where the second spout is located is an inclined wall body, so as to tilt the water out of the spray rod. The wall body where the second air inlet is located faces the spray rod. The second nozzle comprises a third pipe part and a fourth pipe part which are connected or integrally formed together and have a preset included angle. The third pipe part is provided with the water inlet channel. The fourth pipe part is provided with the second mixing chamber, the second air inlet, and the second spout. The transition part between the third pipe part and the fourth pipe part is provided with the second accelerating hole.

8. A jet rod arrangement for a toilet bowl comprising a jet rod, characterised in that: The cleaning nozzle of the spray rod as claimed in any one of claims 1-7 is also included. The first spout of the first nozzle is located above or beside the spray rod.

9. A toilet jet rod arrangement according to claim 8, characterised in that: A fixing seat is also included. The spray rod is slidably arranged in the fixing seat along the length direction of the fixing seat. The cleaning nozzle of the spray rod is mounted on the fixing seat.

10. A toilet jet rod arrangement according to claim 9, characterised in that: The cleaning nozzle of the spray rod is detachably buckled to the fixing seat.

11. A toilet comprising a toilet body, a foam liquid supply module, characterized in that: The toilet spray rod device also comprises a switching valve, the cleaning nozzle of the spray rod further comprises a second nozzle for spraying cleaning water to the surface of the spray rod, the second nozzle is provided with a water inlet channel and a second nozzle opening, the switching valve has a first water outlet and a second water outlet which can switch water out, the first water outlet is communicated with the water inlet of the foam liquid supply module, and the second water outlet is communicated with the water inlet channel of the second nozzle.

12. The toilet according to claim 11, characterized in that: The toilet spray rod device also comprises a switching valve and a tee joint, the switching valve has a first water outlet and a second water outlet which can switch water out, the first water outlet is communicated with the water inlet of the foam liquid supply module, the tee joint has a first port, a second port and a third port which are communicated with each other, the first port is communicated with the second water outlet, the second port is communicated with the liquid outlet of the foam diluent module, and the third port is communicated with the liquid inlet channel of the first nozzle.

13. The toilet of claim 11, wherein: The toilet spray rod device also comprises a switching valve and a tee joint, the switching valve has a first water outlet and a second water outlet which can switch water out, the first water outlet is communicated with the water inlet of the foam liquid supply module, the tee joint has a first port, a second port and a third port which are communicated with each other, the first port is communicated with the second water outlet, the second port is communicated with the liquid outlet of the foam diluent module, and the third port is communicated with the liquid inlet channel of the first nozzle.

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