CN210168650U

CN210168650U - Small-size agricultural machine irrigation equipment with adjustable spray range

Info

Publication number: CN210168650U
Application number: CN201920901530.1U
Authority: CN
Inventors: Kexin Wang; 王可鑫
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-03-24
Anticipated expiration: 2029-06-17

Abstract

The utility model discloses a small-size agricultural machine irrigation equipment with adjustable range sprays, which comprises a vehicle rack, the left side fixedly connected with water tank at frame top, the right side fixedly connected with fixed column at frame top, the top fixedly connected with alignment jig on fixed column right side. The utility model discloses a setting up of spraying range adjustment mechanism makes spraying height of sprinkler head adjust, altitude mixture control can realize driping irrigation formula when higher to irrigate, make its irrigation water conservation more, can carry out efficient soil restoration with comparatively dry soil when highly lower simultaneously, rethread drive mechanism makes the sprinkler head carry out the back-and-forth movement and sprays, the improvement is sprayed the area, the problem that current irrigation equipment does not improve on the scope of irrigating the sprinkling irrigation has been solved, this small-size agricultural machinery irrigation equipment with adjustable spray range, possess irrigation range adjustable control's advantage, the soil quality is improved, weeding efficiency has been strengthened.

Description

Small-size agricultural machine irrigation equipment with adjustable spray range

Technical Field

The utility model relates to the technical field of agricultural machinery, specifically be a small-size agricultural machine irrigation equipment with adjustable spray range.

Background

Agricultural irrigation methods can be generally divided into traditional ground irrigation, general sprinkler irrigation and micro irrigation. Traditional ground irrigation comprises ridge irrigation, furrow irrigation, flood irrigation and flood irrigation, but the irrigation methods usually consume a large amount of water and have low water utilization capacity, so that the traditional ground irrigation is an unreasonable agricultural irrigation method. In addition, the common spray irrigation technology is a relatively common irrigation mode in Chinese agricultural production. But the water utilization efficiency of the common sprinkling irrigation technology is not high. The modern agricultural micro irrigation technology comprises micro-sprinkling irrigation, drip irrigation, infiltration irrigation and the like. These irrigation techniques generally have good water-saving performance and higher water utilization rate than the traditional irrigation mode, and certainly, have some disadvantages.

The existing irrigation device focuses on irrigation mixing, is not improved in the irrigation sprinkling irrigation range, and is uncontrollable in irrigation range when in use, so that medicine waste or uneven irrigation at more positions is caused, and the poor irrigation effect influences the weeding effect and the soil improvement effect.

Disclosure of Invention

An object of the utility model is to provide a small-size agricultural machine irrigation equipment with adjustable scope sprays possesses irrigation scope adjustable control's advantage, has solved current irrigation equipment and has not improved problem on the scope of irrigating the sprinkling irrigation.

In order to achieve the above object, the utility model provides a following technical scheme: a small agricultural machinery irrigation device with adjustable spraying range comprises a frame, wherein a water tank is fixedly connected to the left side of the top of the frame, a fixed column is fixedly connected to the right side of the top of the frame, an adjusting frame is fixedly connected to the top of the right side of the fixed column, a spraying range adjusting mechanism is arranged on the right side of the adjusting frame, a water pump positioned on the right side of the water tank is fixedly connected to the top of the frame, the input end of the water pump is communicated with the bottom of the right side of the water tank, the output end of the water pump is communicated with a three-way pipe, the right side and the top of the three-way pipe are respectively communicated with a water spraying pipe and a transmission pipe, a fixed frame positioned on the right side of the water pump is fixedly connected to the top of the fixed frame, a transmission, the inside of transmission case is provided with drive mechanism, the top movable mounting of fixed column has the adjustable shelf, the top movable mounting of adjustable shelf has the sprinkler head, the left side of sprinkler head is linked together with the right side of spray pipe, the rear side fixedly connected with fixed lagging of adjustable shelf.

Preferably, the spraying range adjusting mechanism comprises an adjusting rod, the adjusting rod is internally provided with an adjusting hole, the right side of the adjusting frame is fixedly connected with a positioning box, a positioning rod is arranged inside the positioning box, the right end of the positioning rod penetrates through the positioning box and extends to the right end of the positioning box to be fixedly connected with a pull head, the left end of the positioning rod sequentially penetrates through the positioning box and the adjusting frame from right to left and extends to the inside of the adjusting hole, a baffle plate is sleeved on the left side of the surface of the positioning rod, a spring is sleeved on the surface of the positioning rod, the left end of the spring is in contact with the right side of the baffle plate, the right end of the spring is contacted with the right side of the inner wall of the positioning box, the top end of the adjusting rod is fixedly connected with a supporting plate, the top of layer board and the bottom contact of sprinkler head, the quantity of regulation hole is not few and eight, and a plurality of regulation holes are the equidistance setting.

Preferably, drive mechanism includes the loose axle, the paddle has been cup jointed on the surface of loose axle, the rear end of loose axle runs through the transmission case and extends to the rear side fixedly connected with driving plate of transmission case, the first slide bar of top fixedly connected with of driving plate rear side, the surface cover of first slide bar is equipped with the driving plate, the right side fixedly connected with connecting plate of driving plate, the right side fixedly connected with second slide bar of connecting plate bottom, second slide bar and fixed sleeve board sliding connection.

Preferably, the left front side of frame bottom and the equal fixedly connected with universal wheel of rear side, the front side on frame bottom right side and the equal fixedly connected with directional wheel of rear side, the top and the equal fixedly connected with limiting plate in bottom of transmission case rear side, the inboard and the top and the bottom sliding connection of driving plate of limiting plate.

Preferably, the top of the water tank is in threaded connection with a sealing cover, and the top of the sealing cover is fixedly connected with a handle.

Preferably, the left side of frame top fixedly connected with pushing hands, the left side of water tank is provided with the observation window.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a setting up of spraying range adjustment mechanism makes spraying height of sprinkler head adjust, altitude mixture control can realize driping irrigation formula when higher to irrigate, make its irrigation water conservation more, can carry out efficient soil restoration with comparatively dry soil when highly lower simultaneously, rethread drive mechanism makes the sprinkler head carry out the back-and-forth movement and sprays, the improvement is sprayed the area, the problem that current irrigation equipment does not improve on the scope of irrigating the sprinkling irrigation has been solved, this small-size agricultural machinery irrigation equipment with adjustable spray range, possess irrigation range adjustable control's advantage, the soil quality is improved, weeding efficiency has been strengthened.

2. The utility model discloses including adjusting the pole because of spraying scope adjustment mechanism, the regulation hole has been seted up to the inside of regulation pole, the right side fixedly connected with location box of alignment jig, the inside of location box is provided with the locating lever, the right-hand member of locating lever runs through the location box and extends to the right-hand member fixedly connected with pull head of location box, the left end of locating lever runs through location box and alignment jig from a right side to a left side in proper order and extends to the inside of adjusting the hole, the baffle has been cup jointed in the left side on locating lever surface, the surface cover of locating lever is equipped with the spring, the left end of spring contacts with the right side of baffle, the right-hand member of spring contacts with the right side of location box inner wall, the top fixedly connected with layer board of regulation pole, the top of layer board contacts with the bottom of sprinkler head, the quantity of regulation hole is not few and eight, The setting of baffle, spring and layer board, convenient to use person drives the locating lever through pulling the pull head right and moves right, the locating lever drives the baffle and moves right, the baffle moves right the left end that drives the spring and moves right, make the spring atress compress, the locating lever is right and break away from the regulation hole simultaneously, make the regulation pole adjust from top to bottom, the spring force resets and drives the baffle and move left after the regulation is accomplished, the baffle drives the locating lever and moves left and adjust the hole card tight fit, will adjust the position of pole and fix, the fixed back layer board of position can carry out high support with the sprinkler head, make the sprinkler head can be steady carry out the sprinkling irrigation that slides from beginning.

3. The utility model is characterized in that the transmission mechanism comprises a movable shaft, a paddle blade is sleeved on the surface of the movable shaft, the rear end of the movable shaft penetrates through the transmission box and extends to the rear side of the transmission box to be fixedly connected with a transmission disc, the top of the rear side of the transmission disc is fixedly connected with a first slide bar, the surface of the first slide bar is sleeved with a transmission plate, the right side of the transmission plate is fixedly connected with a connecting plate, the right side of the bottom of the connecting plate is fixedly connected with a second slide bar, the second slide bar is connected with a fixed sleeve plate in a sliding way, the design is characterized in that the movable shaft, the paddle blade, the transmission disc, the first slide bar, the transmission plate, the connecting plate and the second slide bar are arranged, a user can conveniently convey water in the water tank to the three-way pipe through the output end by starting a water pump, and then convey the water to the transmission pipe through the three-way pipe, after being discharged, the transmission disc drives the first slide bar to move annularly around the movable shaft, the first slide bar drives the transmission plate to move left and right, the transmission plate drives the connecting plate to move left and right, the connecting plate drives the second slide bar to move left and right, the second slide bar is connected with the fixed sleeve plate in a sliding mode, the fixed sleeve plate drives the movable frame to rotate, and the movable frame drives the sprinkler head to spray in an arc-shaped moving mode around the movable frame.

4. The utility model discloses because of the left front side of frame bottom and the equal fixedly connected with universal wheel in rear side, the front side on frame bottom right side and the equal fixedly connected with directional wheel in rear side, the top and the equal fixedly connected with limiting plate in bottom of transmission case rear side, the inboard top and the bottom sliding connection of driving plate of limiting plate, the universal wheel is passed through in this design, the setting of directional wheel and limiting plate, convenient to use person carries out the directional control of shift position through the universal wheel, it is more stable when directional wheel makes universal wheel directional control simultaneously, prevent that the frame right side from following the removal, the limiting plate slides the driving plate spacing simultaneously, it is stable to make the transmission about the driving plate.

5. The utility model discloses because of the top threaded connection of water tank has sealed lid, the top fixedly connected with handle of sealed lid, this design is through the setting of sealed lid and handle, and convenient to use person takes off sealed lid through the handle is rotatory to add water, and the rotatory handle of accessible seals the top of sealed lid and water tank simultaneously, and the water in the water tank rocks when preventing to irrigate and spills over.

6. The utility model discloses because of the left side fixedly connected with pushing hands at frame top, the left side of water tank is provided with the observation window, and this design passes through the setting of pushing hands and observation window, and convenient to use person removes the frame through the pushing hands, and observation window convenient to use person observes the inside liquid level of water tank simultaneously.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top sectional view of the sprinkler head of FIG. 1 according to the present invention;

FIG. 3 is a schematic top cross-sectional view of the transmission case of FIG. 1 according to the present invention;

FIG. 4 is a schematic rear view of the transmission case of FIG. 1 according to the present invention;

fig. 5 is an enlarged schematic view of the adjusting bracket of fig. 1 according to the present invention.

In the figure: 1 frame, 2 water tank, 3 fixed column, 4 adjusting frame, 5 spraying range adjusting mechanism, 51 adjusting rod, 52 adjusting hole, 53 positioning box, 54 positioning rod, 55 pulling head, 56 baffle, 57 spring, 58 supporting plate, 6 water pump, 7 three-way pipe, 8 water spraying pipe, 9 transmission pipe, 10 fixed frame, 11 transmission box, 12 water discharging pipe, 13 transmission mechanism, 131 movable shaft, 132 paddle, 133 transmission disc, 134 first slide bar, 135 transmission plate, 136 connecting plate, 137 second slide bar, 14 movable frame, 15 spraying head, 16 fixed sleeve plate, 17 universal wheel, 18 orientation wheel, 19 limiting plate, 20 sealing cover, 21 handle, 22 pushing hand and 23 observation window.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, a small agricultural machinery irrigation device with adjustable spraying range, comprising a frame 1, universal wheels 17 are fixedly connected to the front side and the rear side of the left side of the bottom of the frame 1, directional wheels 18 are fixedly connected to the front side and the rear side of the right side of the bottom of the frame 1, limiting plates 19 are fixedly connected to the top and the bottom of the rear side of a transmission box 11, and the inner sides of the limiting plates 19 are slidably connected to the top and the bottom of a transmission plate 135. in the design, through the arrangement of the universal wheels 17, the directional wheels 18 and the limiting plates 19, a user can conveniently control the direction of the moving position through the universal wheels 17, meanwhile, the directional wheels 18 enable the direction control of the universal wheels 17 to be more stable, the right side of the frame 1 is prevented from following and moving, meanwhile, the limiting plates 19 limit the transmission plate 135 in a sliding manner, the transmission plate 135 is, the left side of the water tank 2 is provided with an observation window 23, the design is characterized in that the arrangement of a push handle 22 and the observation window 23 is adopted, a user can move the vehicle frame 1 through the push handle 22, the observation window 23 is convenient for the user to observe the liquid level in the water tank 2, the left side of the top of the vehicle frame 1 is fixedly connected with the water tank 2, the top of the water tank 2 is in threaded connection with a sealing cover 20, the top of the sealing cover 20 is fixedly connected with a handle 21, the design is realized through the arrangement of the sealing cover 20 and the handle 21, the user can conveniently take off the sealing cover 20 through the rotation of the handle 21 to add water, meanwhile, the sealing cover 20 can be sealed with the top of the water tank 2 through the rotation of the handle 21, the water in the water tank 2 is prevented from shaking and overflowing during irrigation, the right side of the top of the, because the spraying range adjusting mechanism 5 comprises an adjusting rod 51, an adjusting hole 52 is formed in the adjusting rod 51, a positioning box 53 is fixedly connected to the right side of the adjusting frame 4, a positioning rod 54 is arranged in the positioning box 53, the right end of the positioning rod 54 penetrates through the positioning box 53 and extends to the right end of the positioning box 53, a pull head 55 is fixedly connected to the left end of the positioning box 53, the left end of the positioning rod 54 sequentially penetrates through the positioning box 53 and the adjusting frame 4 from right to left and extends to the inside of the adjusting hole 52, a baffle 56 is sleeved on the left side of the surface of the positioning rod 54, a spring 57 is sleeved on the surface of the positioning rod 54, the left end of the spring 57 contacts with the right side of the baffle 56, the right end of the spring 57 contacts with the right side of the inner wall of the positioning box 53, a supporting plate 58 is fixedly connected to the top end of the adjusting rod 51, the, the design is convenient for a user to drive the positioning rod 54 to move rightwards by pulling the pull head 55 rightwards through the arrangement of the adjusting rod 51, the adjusting hole 52, the positioning box 53, the positioning rod 54, the pull head 55, the baffle 56, the spring 57 and the supporting plate 58, the positioning rod 54 drives the baffle 56 to move rightwards, the baffle 56 moves rightwards and drives the left end of the spring 57 to move rightwards, the spring 57 is stressed and compressed, the positioning rod 54 moves rightwards and is separated from the adjusting hole 52, the adjusting rod 51 can be adjusted up and down, the baffle 56 is driven to move leftwards by the elastic force of the spring 57 after the adjustment is completed, the baffle 56 drives the positioning rod 54 to move leftwards and is tightly matched with the adjusting hole 52, the position of the adjusting rod 51 is fixed, the supporting plate 58 can support the height of the sprinkler head 15, the sprinkler head 15 can stably slide forwards and backwards on, the input end of the water pump 6 is communicated with the bottom of the right side of the water tank 2, the output end of the water pump 6 is communicated with a three-way pipe 7, the right side and the top of the three-way pipe 7 are respectively communicated with a water spraying pipe 8 and a transmission pipe 9, the top of the frame 1 is fixedly connected with a fixed frame 10 positioned on the right side of the water pump 6, the top of the fixed frame 10 is fixedly connected with a transmission box 11, the left side of the transmission box 11 is communicated with a drain pipe 12, one end of the drain pipe 12 far away from the transmission box 11 is communicated with the top of the right side of the water tank 2, a transmission mechanism 13 is arranged in the transmission box 11, the transmission mechanism 13 comprises a movable shaft 131, a paddle 132 is sleeved on the surface of the movable shaft 131, the rear end of the movable shaft 131 penetrates through the transmission box 11 and extends to the rear side of the transmission box 11 and is fixedly connected with a transmission disc 133, the top of, the right side of the bottom of the connecting plate 136 is fixedly connected with a second slide bar 137, the second slide bar 137 is in sliding connection with the fixed sleeve plate 16, the design is that the movable shaft 131, the paddle 132, the transmission disc 133, the first slide bar 134, the transmission plate 135, the connecting plate 136 and the second slide bar 137 are arranged, a user can conveniently transmit water in the water tank 2 to the three-way pipe 7 through the output end by starting the water pump 6, then the water is transmitted to the transmission pipe 9 through the three-way pipe 7, after the water is discharged through the transmission pipe 9, the water impacts the paddle 132 to drive the paddle 132 to rotate, the paddle 132 drives the movable shaft 131 to rotate, the movable shaft 131 drives the transmission disc 133 to rotate, the transmission disc 133 drives the first slide bar 134 to circularly move around the movable shaft 131, the first slide bar 134 drives the transmission plate 135 to move left and right, the transmission plate 135 drives the connecting plate 136 to move left and right, the connecting plate 136 drives the second slide bar 137 to move left, the fixed sleeve plate 16 drives the movable frame 14 to rotate, the movable frame 14 drives the sprinkler head 15 to spray in an arc-shaped movement mode around the movable frame 14, the movable frame 14 is movably installed at the top of the fixed column 3, the sprinkler head 15 is movably installed at the top of the movable frame 14, the left side of the sprinkler head 15 is communicated with the right side of the water spray pipe 8, and the fixed sleeve plate 16 is fixedly connected to the rear side of the movable frame 14.

When the sprinkler is used, a user rotates the handle 21 to take down the sealing cover 20 for adding water, the sealing cover 20 is sealed with the top of the water tank 2 by rotating the handle 21, the water in the water tank 2 is prevented from shaking and overflowing during irrigation, the user pulls the pull head 55 rightwards to drive the positioning rod 54 to move rightwards, the positioning rod 54 drives the baffle 56 to move rightwards, the baffle 56 moves rightwards to drive the left end of the spring 57 to move rightwards, the spring 57 is stressed and compressed, the positioning rod 54 moves rightwards and is separated from the adjusting hole 52, the adjusting rod 51 can be adjusted up and down, after the adjustment is completed, the spring 57 is reset by elasticity to drive the baffle 56 to move leftwards, the baffle 56 drives the positioning rod 54 to move leftwards to be tightly matched with the adjusting hole 52, the position of the adjusting rod 51 is fixed, the rear supporting plate 58 with the fixed position can highly support the, the user starts the water pump 6 again, the water pump 6 outputs the water in the water tank 2 from the output end through the input end, then the liquid in the water tank 2 is respectively conveyed to the water spray pipe 8 and the transmission pipe 9 through the three-way pipe 7, when the liquid is discharged through the transmission pipe 9, the water flow impacts the paddle 132 to drive the paddle 132 to rotate, the paddle 132 drives the movable shaft 131 to rotate, the movable shaft 131 drives the transmission disc 133 to rotate, the transmission disc 133 drives the first slide bar 134 to move annularly around the movable shaft 131, the first slide bar 134 drives the transmission plate 135 to move left and right, the transmission plate 135 drives the connecting plate 136 to move left and right, the connecting plate 136 drives the second slide bar 137 to move left and right, the second slide bar 137 is connected with the fixed sleeve plate 16 in a sliding manner, the fixed sleeve plate 16 drives the movable frame 14 to rotate, the movable frame 14 drives the sprinkler head 15 to move around the movable frame 14 in an arc manner to spray, the soil quality is improved, and the weeding efficiency is enhanced.

In summary, the following steps: this small-size agricultural machine irrigation equipment with adjustable spray range, the setting through spraying range adjustment mechanism 5 makes the spraying height of sprinkler head 15 adjust, altitude mixture control can realize driping irrigation formula when higher, makes its irrigation more water conservation, can carry out efficient soil restoration with comparatively dry soil when highly lower simultaneously, rethread drive mechanism 13 makes sprinkler head 15 carry out the back-and-forth movement and sprays, improves and sprays the area, the problem that current irrigation equipment does not improve on the scope of irrigating the sprinkling irrigation has been solved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a small-size agricultural machine irrigation equipment with adjustable spray range, includes frame (1), its characterized in that: the left side of the top of the frame (1) is fixedly connected with a water tank (2), the right side of the top of the frame (1) is fixedly connected with a fixed column (3), the top of the right side of the fixed column (3) is fixedly connected with an adjusting frame (4), the right side of the adjusting frame (4) is provided with a spraying range adjusting mechanism (5), the top of the frame (1) is fixedly connected with a water pump (6) positioned on the right side of the water tank (2), the input end of the water pump (6) is communicated with the bottom of the right side of the water tank (2), the output end of the water pump (6) is communicated with a three-way pipe (7), the right side and the top of the three-way pipe (7) are respectively communicated with a water spraying pipe (8) and a transmission pipe (9), the top of the frame (1) is fixedly connected with a fixed frame (10, the left side intercommunication of transmission case (11) has drain pipe (12), the one end that transmission case (11) were kept away from in drain pipe (12) is linked together with the top on water tank (2) right side, the inside of transmission case (11) is provided with drive mechanism (13), the top movable mounting of fixed column (3) has adjustable shelf (14), the top movable mounting of adjustable shelf (14) has sprinkler head (15), the left side of sprinkler head (15) is linked together with the right side of spray pipe (8), the rear side fixedly connected with fixed lagging (16) of adjustable shelf (14).

2. The small agricultural machinery irrigation device with adjustable spraying range of claim 1, wherein: the spraying range adjusting mechanism (5) comprises an adjusting rod (51), an adjusting hole (52) is formed in the adjusting rod (51), a positioning box (53) is fixedly connected to the right side of the adjusting frame (4), a positioning rod (54) is arranged in the positioning box (53), the right end of the positioning rod (54) penetrates through the positioning box (53) and extends to the right end of the positioning box (53) to be fixedly connected with a pull head (55), the left end of the positioning rod (54) sequentially penetrates through the positioning box (53) and the adjusting frame (4) from right to left and extends to the inside of the adjusting hole (52), a baffle (56) is sleeved on the left side of the surface of the positioning rod (54), a spring (57) is sleeved on the surface of the positioning rod (54), the left end of the spring (57) is in contact with the right side of the baffle (56), and the right end of the spring (57) is in contact with the right side of the inner wall, the top end of the adjusting rod (51) is fixedly connected with a supporting plate (58), the top of the supporting plate (58) is in contact with the bottom of the sprinkler head (15), the number of the adjusting holes (52) is not less than eight, and the adjusting holes (52) are arranged equidistantly.

3. The small agricultural machinery irrigation device with adjustable spraying range of claim 1, wherein: drive mechanism (13) include loose axle (131), oar piece (132) have been cup jointed on the surface of loose axle (131), the rear end of loose axle (131) runs through transmission case (11) and extends to rear side fixedly connected with driving plate (133) of transmission case (11), the first slide bar of top fixedly connected with (134) of driving plate (133) rear side, the surface cover of first slide bar (134) is equipped with driving plate (135), the right side fixedly connected with connecting plate (136) of driving plate (135), the right side fixedly connected with second slide bar (137) of connecting plate (136) bottom, second slide bar (137) and fixed lagging (16) sliding connection.

4. The small agricultural machinery irrigation device with adjustable spraying range of claim 1, wherein: the frame (1) bottom left front side and the equal fixedly connected with universal wheel (17) of rear side, the frame (1) bottom right side front side and the equal fixedly connected with directional wheel (18) of rear side, the equal fixedly connected with limiting plate (19) in top and the bottom of transmission case (11) rear side, the inboard of limiting plate (19) and the top and the bottom sliding connection of driving plate (135).

5. The small agricultural machinery irrigation device with adjustable spraying range of claim 1, wherein: the top of the water tank (2) is in threaded connection with a sealing cover (20), and the top of the sealing cover (20) is fixedly connected with a handle (21).

6. The small agricultural machinery irrigation device with adjustable spraying range of claim 1, wherein: the left side fixedly connected with pushing hands (22) at frame (1) top, the left side of water tank (2) is provided with observation window (23).