Oil tank for spraying machine

Abstract

The present invention relates to the technical field of spraying equipment, and discloses an oil tank for a spraying machine, comprising a storage unit, a floating unit, and a sealing unit. The present invention is provided with a float plate and a float ball, wherein the float plate and the float ball move with the paint liquid level, thereby ensuring that the suction box can always be located at a specified depth below the paint liquid level. At this time, the pressure of the paint on the side wall of the suction box is constant, so that the oil pump can continuously and stably suck in oil, thereby maintaining the pressure stability of the spraying system, and when the suction box falls to the bottom of the oil tank shell, the rocker arm will squeeze and rotate, and the rocker arm will drive the coaxially connected power storage cover to start rotating counterclockwise at this time. The power storage rod on the power storage cover drives the sleeve rod to move, and the sealing plate and scraper slide at the bottom of the suction box to clean the impurities on the filter surface, and also seal the suction box as a whole to ensure that the impurities at the bottom of the oil tank will not be sucked into the pipeline, reducing the frequency of pipeline maintenance and replacement.

Description

Technical Field

[0001] The invention belongs to the technical field of spraying machine equipment, and in particular relates to an oil tank for a spraying machine. Background Art

[0002] During sprayer operation, the fuel tank is a key component for storing and transporting spray media such as paint and coatings. The design of its oil suction structure directly impacts the sprayer's operational stability and spray quality. Existing sprayer fuel tank oil suction structures have significant flaws, primarily in terms of fixed and movable suction ports.

[0003] The position of the fixed oil suction port remains unchanged. As the spraying operation continues, the liquid level of the spraying medium continues to drop, and the pressure at the oil suction port position changes accordingly. When the liquid level is high, the oil suction is smooth; but as the liquid level drops, the pressure decreases, which not only slows down and makes the oil suction speed unstable, but also makes the spray flow unstable, resulting in uneven coating thickness on the workpiece surface, seriously affecting the spraying quality; and the movable oil suction port, although it ensures that the oil suction pressure is uniform, but in actual spraying operations, tiny solid impurities such as pigment particles and dust contained in the spraying medium will settle to the bottom of the oil tank over time. Therefore, when the oil suction port is moved to the bottom, it is very easy to absorb these impurities into the oil suction pipeline, causing the spray gun to be blocked, affecting the normal spraying operation.

[0004] Furthermore, a fuel tank for a spraying machine is proposed, which can adapt to the changes in the liquid level of the spraying medium, maintain a stable oil suction pressure, and prevent the oil suction port from absorbing impurities at the bottom of the tank. Summary of the Invention

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] An oil tank for a sprayer comprises a storage unit, a floating unit and a sealing unit.

[0007] The storage unit includes a fuel tank shell and a cover plate, the fuel tank shell and the cover plate cooperate with each other, a hose is installed on the cover plate, a suction box is installed at the output end of the hose, and a filter is installed at the inlet of the suction box;

[0008] The floating unit includes a floating ball, a floating plate is installed at the bottom of the floating ball, and the floating plate is installed on the side wall of the suction box, a scale is installed on the floating plate, a boss is installed on the top of the scale, a pressure plate is rotatably installed on the cover plate, a knocking rod is installed at the rotation center of the pressure plate, the end of the knocking rod is in contact with the sound plate installed on the surface of the cover plate, a torsion spring is installed at the rotation center of the pressure plate, and the boss moves downward to squeeze the pressure plate;

[0009] The sealing unit includes a sealing plate, a scraper is installed on the sealing plate, the sealing plate and the scraper are installed at the bottom of the suction box, a synchronous bracket is installed on the sealing plate, the synchronous bracket slides on the side wall of the suction box, and a positioning bracket is installed on the side wall of the floating plate. A force storage cover is rotatably installed on the positioning bracket, a force storage rod is inserted on the force storage cover, and the end of the force storage rod is slidably connected to the synchronous bracket. The connection point between the force storage rod and the synchronous bracket is closer to one side of the sealing plate than the connection point between the force storage cover and the positioning bracket. A force storage spring is installed between the force storage cover and the force storage rod. A rocker arm is installed at the rotation center of the force storage cover. The rocker arm is in an inclined state, and the rocker arm vertically corresponds to the top rod installed on the top of the cover plate.

[0010] As a preferred embodiment of the present invention, a discharge port is installed at the bottom of the oil tank shell, a plug is screwed on the discharge port, and several pairs of baffle plates are vertically installed on the oil tank shell, each of the baffle plates is provided with a notch, and the notches on adjacent baffle plates do not correspond to each other, and the bottom of the baffle plates are provided with corresponding connecting holes.

[0011] As a preferred embodiment of the present invention, a fixing plate is installed on the side wall of the fuel tank shell, a mounting plate is welded to the side wall of the fixing plate, mounting holes are opened at the corners of the mounting plate, and several pairs of reinforcing ribs are installed on the fixing plate, the side walls of the reinforcing ribs and the side walls of the mounting plate are connected to each other, and the reinforcing ribs are triangular.

[0012] As a preferred embodiment of the present invention, a feed port is provided on the cover plate, a sealing plug is installed on the feed port by bolts, mounting ears are welded on the relative surfaces of the oil tank shell and the cover plate, and bolt holes are provided on the mounting ears for connecting the oil tank shell and the cover plate.

[0013] As a preferred embodiment of the present invention, a clamping plate is fixedly installed on the side wall of the hose, the clamping plate is installed on the cover plate, the inlet end of the hose is interconnected with the spraying assembly of the sprayer, the hose movably passes through the cover plate, and a pair of parallel guide rails are provided at the bottom of the suction box, and the pair of guide rails are slidably connected to the sealing plate and the scraper.

[0014] As a preferred embodiment of the present invention, a limit rod is slidably installed on the side wall of the floating plate, the top of the limit rod and the cover plate are connected to each other, and the bottom of the limit rod and the bottom of the oil tank shell are movably plugged into each other, a counterweight block is installed at the bottom of the floating plate, scale lines are engraved on the surface of the ruler, a limit plate is installed on the top of the ruler, and the cross-sectional area of the limit plate is larger than the cross-sectional area of the ruler.

[0015] As a preferred embodiment of the present invention, a synchronous shaft is installed at the rotation center of the pressure plate, and mounting seats are rotatably installed at both ends of the synchronous shaft. The mounting seats are welded on the cover plate, and a torsion spring is sleeved on the synchronous shaft. One end of the torsion spring is clamped on the mounting seat, and the other end of the torsion spring is clamped on the pressure plate. A hammer head is installed at the end of the knocking rod, and a guide wheel is installed on the boss.

[0016] As a preferred embodiment of the present invention, a guide rod is installed movably through the interior of the synchronous bracket, guide seats are installed at both ends of the guide rod, the guide seats are welded to the side walls of the suction box, the guide rod is in a horizontal state, a sleeve rod is installed on the side wall of the synchronous bracket, a positioning plate is installed at the end of the sleeve rod, and the diameter of the positioning plate is larger than the diameter of the sleeve rod.

[0017] As a preferred embodiment of the present invention, a sliding sleeve is sleeved on the sleeve rod, the sliding sleeve and the end of the power storage rod are connected to each other, a power storage plate is installed at the other end of the power storage rod, the power storage plate is slidably arranged in the inner cavity of the power storage cover, and the two ends of the power storage spring are respectively clamped in the side wall of the power storage plate and the inner cavity of the power storage cover.

[0018] As a preferred embodiment of the present invention, a fixing seat is installed on the positioning bracket, and the fixing seat is rotatably connected to the power storage cover and the rocker arm, and the lowest point of the rocker arm is located below the synchronous bracket.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention is provided with a float plate and a float ball, wherein the float plate and the float ball move with the paint liquid level, thereby ensuring that the suction box can always be located at a specified depth below the paint liquid level. At this time, the pressure of the paint on the side wall of the suction box is constant, so that the oil pump can continuously and stably suck in the oil, thereby maintaining the pressure stability of the spraying system. Stable pressure is very important to ensure the uniformity and consistency of spraying, and can ensure the stability of the sprayed paint flow rate and form a uniform coating. After the paint drops to a certain level, an alarm can be processed, and when the suction box falls to the tank shell When the bottom of the suction box is reached, the rocker arm will be squeezed and rotated, and the rocker arm drives the coaxially connected power storage cover to start rotating counterclockwise. When the power storage cover rotates counterclockwise, the power storage rod on the power storage cover drives the sleeve rod to move, and the sleeve rod drives the synchronous bracket to slide on the guide rod. At this time, the synchronous bracket is connected with a sealing plate and a scraper. At this time, the sealing plate and the scraper slide on the bottom of the suction box to clean the impurities on the surface of the filter and seal the suction box as a whole. The impurities at the bottom of the oil tank will not be sucked into the pipeline, which protects the pipeline system and reduces the frequency of pipeline maintenance and replacement.

[0021] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In the attached figure:

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of a fuel tank for a spraying machine;

[0024] Figure 2 It is a bottom view of a fuel tank for a sprayer;

[0025] Figure 3 It is a side view of a fuel tank for a spraying machine;

[0026] Figure 4 A fuel tank for a sprayer Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 It is an overall cross-sectional view of a fuel tank for a spraying machine;

[0028] Figure 6 The figure shows a partial structure of a fuel tank for a spraying machine.

[0029] Figure 7 A fuel tank for a sprayer Figure 6 Enlarged view of point B in the middle;

[0030] Figure 8 The second diagram shows the partial structure of a fuel tank for a spraying machine;

[0031] Figure 9 The third diagram shows the partial structure of a fuel tank for a spraying machine;

[0032] Figure 10 The figure is a schematic diagram of the internal structure of the oil tank shell of a spraying machine oil tank.

[0033] In the picture:

[0034] 100, storage unit; 101, fuel tank housing; 1011, discharge port; 1012, mounting ears; 102, cover plate; 1021, feed port; 1022, sealing plug; 103, fixing plate; 1031, mounting plate; 1032, mounting hole; 1033, reinforcing rib; 104, barrier plate; 1041, notch; 1042, connecting hole; 105, hose; 1051, clamping plate; 1052, suction box; 1053, filter screen;

[0035] 200, floating unit; 201, float; 202, floating plate; 2021, counterweight; 2022, limit rod; 203, scale; 2031, scale mark; 2032, limit plate; 2033, boss; 2034, guide wheel; 204, pressure plate; 2041, striking rod; 2042, hammer; 2043, clapper; 2044, mounting seat; 2045, synchronizing shaft; 2046, torsion spring;

[0036] 300, sealing unit; 301, sealing plate; 3011, scraper; 3012, synchronous bracket; 3013, guide rail; 3014, guide rod; 3015, guide seat; 302, sleeve rod; 3021, positioning plate; 3022, sliding sleeve; 303, power storage cover; 3031, power storage rod; 3032, power storage plate; 3033, power storage spring; 304, positioning bracket; 3041, rocker arm; 3042, push rod; 3043, fixing seat. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0038] Example 1: Figures 1 to 10 As shown, an oil tank for a sprayer includes a storage unit 100 , a floating unit 200 and a sealing unit 300 .

[0039] The storage unit 100 includes a fuel tank housing 101 and a cover plate 102. The fuel tank housing 101 and the cover plate 102 cooperate with each other to form a chamber for storing paint. A hose 105 is installed on the cover plate 102. A suction box 1052 is installed at the output end of the hose 105. A filter 1053 is installed at the inlet of the suction box 1052 to filter impurities.

[0040] The floating unit 200 includes a float 201, a float plate 202 is installed at the bottom of the float 201, and the float plate 202 is installed on the side wall of the suction box 1052. When the paint content in the storage unit 100 gradually decreases, and the float 201 is always floating on the paint, as the paint liquid level drops, the float 201 can drop synchronously, and the float 202 at the bottom of the float 201 can move down synchronously, and the float plate 202 can pull the suction box 1052 on the side wall to move down synchronously, ensuring that the suction box 1052 can always be located at a specified depth below the paint liquid level. At this time, the pressure of the paint on the side wall of the suction box 1052 is constant, so that the oil pump can continuously and stably suck in oil, thereby maintaining the pressure stability of the spraying system, and a scale 203 is installed on the float plate 202, and a boss 2033 is installed on the top of the scale 203. A pressure plate 204 is rotatably installed on the cover plate 102, and a knocking rod 2041 is installed at the rotation center of the pressure plate 204 to knock The end of the rod 2041 fits into the sound plate 2043 installed on the surface of the cover 102. A torsion spring 2046 is installed at the rotation center of the pressure plate 204. The boss 2033 moves downward to squeeze the pressure plate 204. The downward movement of the floating plate 202 can drive the scale 203 to move downward. When the scale 203 falls to a certain extent, the boss 2033 on the side wall of the scale 203 will squeeze the pressure plate 204, and then the pressure plate 204 will rotate. After the pressure plate 204 rotates, the pressure plate 204 drives the coaxial The knocking rod 2041 rotates, and at this time the torsion spring 2046 is twisted synchronously. As the scale 203 drives the boss 2033 to continue to move downward, the pressure plate 204 and the boss 2033 are finally separated. At this time, the knocking rod 2041 is driven by the torsion spring 2046 to accelerate the rotation and reset. The hammer head 2042 finally quickly contacts the sound board 2043, and then it can knock and make a sound, which finally serves as an alarm to remind the operator that the paint content in the storage unit 100 is insufficient.

[0041] The sealing unit 300 includes a sealing plate 301, a scraper 3011 is installed on the sealing plate 301, the sealing plate 301 and the scraper 3011 are installed at the bottom of the suction box 1052, a synchronous bracket 3012 is installed on the sealing plate 301, the synchronous bracket 3012 slides on the side wall of the suction box 1052, a positioning bracket 304 is installed on the side wall of the floating plate 202, a power storage cover 303 is rotatably installed on the positioning bracket 304, a power storage rod 3031 is plugged into the power storage cover 303, and the power storage rod 3031 is inserted into the power storage rod 3031. The end of 031 is slidingly connected to the synchronous bracket 3012. The connection point between the power storage rod 3031 and the synchronous bracket 3012 is closer to the side of the sealing plate 301 than the connection point between the power storage cover 303 and the positioning bracket 304. A power storage spring 3033 is installed between the power storage cover 303 and the power storage rod 3031. A rocker arm 3041 is installed at the rotation center of the power storage cover 303. The rocker arm 3041 is in an inclined state. The rocker arm 3041 vertically corresponds to the top rod 3042 installed on the top of the cover plate 102. When the rocker arm 3041 on the sealing unit 300 is squeezed into contact with the oil tank shell 101, the rocker arm 3041 will rotate, and the rocker arm 3041 drives the coaxially connected force storage cover 303 to start rotating counterclockwise. When the force storage cover 303 rotates counterclockwise, the force storage rod 3031 on the force storage cover 303 drives the sleeve rod 302 to move, and the sleeve rod 302 drives the synchronous bracket 3012 to slide on the guide rod 3014. At this time, the synchronous bracket 3012 is connected with the sealing plate 301 and the scraper 3011. At this time, the sealing plate 301 and the scraper 3011 slide on the bottom of the suction box 1052 to clean the impurities on the surface of the filter screen 1053 and seal the suction box 1052 as a whole. At this time, the impurities at the bottom of the oil tank shell 101 will not be sucked into the pipeline, which protects the pipeline system and reduces the frequency of pipeline maintenance and replacement.

[0042] like Figures 1 to 10 As shown, in a specific embodiment, a discharge port 1011 is installed at the bottom of the oil tank shell 101, and a plug is screwed and installed on the discharge port 1011, and the plug is used to seal the discharge port 1011. Several pairs of baffles 104 are vertically installed on the oil tank shell 101, and each baffle plate 104 is provided with a notch 1041, and the notches 1041 on adjacent baffles 104 do not correspond to each other. The bottom of the baffle plate 104 is provided with corresponding connecting holes 1042. The internal space of the oil tank can be divided into multiple smaller areas by several pairs of baffle plates 104, so that the paint cannot flow unimpeded on a large scale in the oil tank. When the paint encounters a baffle during the flow, it needs to change the flow direction and bypass the baffle to continue flowing, which increases the complexity and resistance of the paint flow, thereby reducing the amplitude and speed of the overall shaking of the liquid, ensuring that the suction box 1052 is always below the paint liquid level, and ensuring that the equipment can still work normally in the case of shaking.

[0043] like Figures 1 to 10As shown, further, a fixing plate 103 is installed on the side wall of the fuel tank shell 101, and a mounting plate 1031 is welded to the side wall of the fixing plate 103. A mounting hole 1032 is opened at the corner of the mounting plate 1031, and a plurality of pairs of reinforcing ribs 1033 are installed on the fixing plate 103. The side walls of the reinforcing ribs 1033 and the side walls of the mounting plate 1031 are connected to each other, and the reinforcing ribs 1033 are triangular. The above structure ensures that the fuel tank shell 101 can be connected to the external structure, and the reinforcing ribs 1033 improve the structural strength of the connection.

[0044] like Figures 1 to 10 As shown, further, a feed port 1021 is provided on the cover plate 102, a sealing plug 1022 is installed on the feed port 1021 by bolts, mounting ears 1012 are welded on the relative surfaces of the oil tank shell 101 and the cover plate 102, and a bolt hole is provided on the mounting ear 1012 for connecting the oil tank shell 101 and the cover plate 102.

[0045] like Figures 1 to 10 As shown, further, a clamping plate 1051 is fixedly installed on the side wall of the hose 105, and the clamping plate 1051 is installed on the cover 102. The inlet end of the hose 105 is interconnected with the spraying assembly of the sprayer. The hose 105 movably passes through the cover 102. A pair of parallel guide rails 3013 are provided at the bottom of the suction box 1052. The pair of guide rails 3013 are slidably connected to the sealing plate 301 and the scraper 3011, and the moving paths of the sealing plate 301 and the scraper 3011 are limited by the guide rails 3013.

[0046] Example 2: Based on Example 1, the difference from this example is that: Figures 1 to 10 As shown, a limit rod 2022 is slidably installed on the side wall of the floating plate 202. The top of the limit rod 2022 and the cover plate 102 are connected to each other, and the bottom of the limit rod 2022 is movably plugged into the bottom of the fuel tank shell 101. The limit rod 2022 limits the sliding path of the floating plate 202. A counterweight block 2021 is installed at the bottom of the floating plate 202. The counterweight block 2021 ensures that the structure connected to the floating plate 202 can fall normally according to gravity. The surface of the ruler 203 is engraved with scales. Line 2031, a limit plate 2032 is installed on the top of the scale 203, and the cross-sectional area of the limit plate 2032 is larger than the cross-sectional area of the scale 203. When the floating plate 202 moves downward, the scale 203 on the floating plate 202 moves downward synchronously, and the position of the scale line 2031 on the scale 203 changes, thereby determining the content of the paint in the storage unit 100. The limit plate 2032 on the scale 203 ensures that the scale 203 and the cover plate 102 will not separate.

[0047] like Figures 1 to 10As shown, in a specific embodiment, a synchronization shaft 2045 is installed at the rotation center of the pressure plate 204, and mounting seats 2044 are rotatably installed at both ends of the synchronization shaft 2045. The mounting seats 2044 are welded to the cover plate 102, and a torsion spring 2046 is sleeved on the synchronization shaft 2045. One end of the torsion spring 2046 is clamped on the mounting seat 2044, and the other end of the torsion spring 2046 is clamped on the pressure plate 204. A hammer head 2042 is installed at the end of the knocking rod 2041, and a guide wheel 2034 is installed on the boss 2033. After the pressure plate 204 rotates, the pressure plate 204 drives the coaxial knocking rod 2041 and the hammer head 2042 to rotate, and at this time the torsion spring 2046 is twisted synchronously. As the scale 203 drives the boss 2033 to continue to move downward, the pressure plate 204 and the boss 2033 are finally separated. At this time, the knocking rod 2041 and the hammer head 2042 are driven by the torsion spring 2046 to accelerate the rotation and reset. The hammer head 2042 finally quickly contacts the soundboard 2043, and then can knock to make a sound, which can eventually serve as an alarm to remind the operator that the paint content in the storage unit 100 is insufficient.

[0048] Example 3: Based on Example 2, the difference from this example is that: Figures 1 to 10 As shown, a guide rod 3014 is installed inside the synchronous bracket 3012, and guide seats 3015 are installed at both ends of the guide rod 3014. The guide seats 3015 are welded to the side walls of the suction box 1052. The guide rod 3014 limits the moving path of the synchronous bracket 3012. The guide rod 3014 is in a horizontal state. A sleeve rod 302 is installed on the side wall of the synchronous bracket 3012. A positioning plate 3021 is installed at the end of the sleeve rod 302. The diameter of the positioning plate 3021 is larger than the diameter of the sleeve rod 302.

[0049] like Figures 1 to 10As shown, in a specific embodiment, a sleeve 3022 is sleeved on the sleeve rod 302. The sleeve 3022 and the end of the power storage rod 3031 are connected to each other. The other end of the power storage rod 3031 is mounted with a power storage plate 3032. The power storage plate 3032 is slidably mounted within the inner cavity of the power storage cover 303. The ends of the power storage spring 3033 are respectively engaged with the sidewalls of the power storage plate 3032 and the inner cavity of the power storage cover 303. A fixing seat 3043 is mounted on the positioning bracket 304. The fixing seat 3043 is rotatably connected to the power storage cover 303 and the rocker arm 3041. The lowest point of the rocker arm 3041 is located below the synchronization bracket 3012. When the force storage cover 303 drives the force storage rod 3031 to rotate, first, when the force storage cover 303 rotates to the vertical direction, the force storage rod 3031 slides inside the force storage cover 303, and the force storage plate 3032 on the force storage rod 3031 compresses the force storage spring 3033, and then the force storage cover 303 continues to rotate. At this time, the connection point between the force storage rod 3031 and the sleeve rod 302 is located on the left side of the connection point between the force storage cover 303 and the rocker arm 3041. At this time, the force storage rod 3031 is reset by the force storage spring 3033, and the force storage rod 3031 is pushed outward. At this time, the positions of the force storage rod 3031 and the force storage cover 303 change, and the force storage rod 3031 can push the sleeve rod 302 to move, and then can immediately drive the synchronous bracket 3012 and the sealing plate 301 to move, so as to seal the suction box 1052.

[0050] The implementation principle of a fuel tank for a sprayer of the present invention is as follows:

[0051] The operator can fill the cavity formed by the oil tank shell 101 and the cover plate 102 in the storage unit 100 with paint, and then the operator can start the sprayer to extract the paint in the above-mentioned gap and spray the paint outward through the sprayer. In the above process, the paint in the cavity is first filtered through the filter 1053 in the suction box 1052, and the filtered paint can be transported to the sprayer through the hose 105.

[0052] As the sprayer continues to work, the paint content in the storage unit 100 gradually decreases, and the float 201 is always floating on the paint. As the paint liquid level drops, the float 201 can drop synchronously, and the float plate 202 at the bottom of the float 201 can move down synchronously. The float plate 202 slides along the limit rod 2022 at this time, thereby limiting the downward sliding path of the float plate 202, and the float plate 202 can pull the suction box 1052 on the side wall to move down synchronously, ensuring that the suction box 1052 can always be located at a specified depth below the paint liquid level. At this time, the side wall of the suction box 1052 is subjected to a certain pressure from the paint, so that the oil pump can continuously and stably suck in oil, thereby maintaining the pressure stability of the spraying system. Stable pressure is crucial to ensuring the uniformity and consistency of spraying, and can ensure the stable flow of sprayed paint to form a uniform coating.

[0053] When the floating plate 202 moves downward, the scale 203 on the floating plate 202 moves downward synchronously, and the position of the scale line 2031 on the scale 203 changes, thereby determining the paint content in the storage unit 100. The limiting plate 2032 on the scale 203 ensures that the scale 203 and the cover plate 102 will not separate.

[0054] When the scale 203 drops to a certain depth, the boss 2033 on the side wall of the scale 203 presses against the pressure plate 204, causing the pressure plate 204 to rotate. The guide wheel 2034 on the boss 2033 rolls on the surface of the pressure plate 204, reducing friction. The rotation of the pressure plate 204 drives the coaxial knocking rod 2041 and hammer 2042 to rotate, and the torsion spring 2046 is simultaneously twisted. As the scale 203 drives the boss 2033 downward, the pressure plate 204 and the boss 2033 eventually separate. The torsion spring 2046 then accelerates the knocking rod 2041 and hammer 2042 to rotate and return to their original position. The hammer 2042 eventually quickly contacts the soundboard 2043, producing a knocking sound, which ultimately serves as an alarm, notifying the operator of insufficient paint content in the storage unit 100.

[0055] During the above alarm process, the sealing unit 300 at this time follows the floating unit 200 and continues to move downward. When the rocker arm 3041 on the sealing unit 300 is squeezed and contacted with the oil tank shell 101, the rocker arm 3041 will rotate, and the rocker arm 3041 drives the coaxially connected power storage cover 303 to start rotating counterclockwise. When the power storage cover 303 rotates counterclockwise, the power storage rod 3031 on the power storage cover 303 drives the sleeve rod 302 to move, and the sleeve rod 302 drives the synchronous bracket 3012 to slide on the guide rod 3014. At this time, the synchronous bracket 3012 is connected to the sealing plate 301 and the scraper 3011. At this time, the sealing plate 301 and the scraper 3011 slide at the bottom of the suction box 1052 to clean the impurities on the surface of the filter 1053 and seal the suction box 1052 as a whole.

[0056] In the process of the force storage cover 303 driving the force storage rod 3031 to rotate, first, in the process of the force storage cover 303 rotating to the vertical direction, the force storage rod 3031 slides inside the force storage cover 303, and the force storage plate 3032 on the force storage rod 3031 compresses the force storage spring 3033, and then the force storage cover 303 continues to rotate. At this time, when the connection point between the force storage rod 3031 and the sleeve rod 302 is located on the left side of the connection point between the force storage cover 303 and the rocker arm 3041, the force storage rod 3031 is reset by the force storage spring 3033, and the force storage rod 3031 is pushed outward. At this time, the positions of the force storage rod 3031 and the force storage cover 303 change, and the force storage rod 3031 can push the sleeve rod 302 to move, and then can immediately drive the synchronous bracket 3012 and the sealing plate 301 to move, so that the suction box 1052 can be quickly sealed.

[0057] During the process of sealing the suction box 1052 by the sealing plate 301, the suction box 1052 is almost at the bottom of the oil tank shell 101, and the impurities at the bottom of the oil tank shell 101 will not be sucked into the pipeline, thereby protecting the pipeline system and reducing the frequency of pipeline maintenance and replacement.

[0058] When adding paint later, the operator manually rotates the pressure plate 204 so that the vertical movement of the boss 2033 does not interfere with the pressure plate 204, thereby ensuring that the floating unit 200 can rise along with the rising paint liquid level. When it rises to a certain extent, the top rod 3042 and the rocker arm 3041 are squeezed, and the rocker arm 3041 rotates in the opposite direction to reset, thereby separating the sealing plate 301 and the scraper 3011 from the filter screen 1053 at the bottom of the suction box 1052.

Claims

1. A fuel tank for a sprayer, comprising a storage unit, a floating unit, and a sealing unit, characterized in that: The storage unit includes a fuel tank shell and a cover plate, which cooperate with each other. A hose is installed on the cover plate, a suction box is installed at the output end of the hose, and a filter is installed at the inlet of the suction box. The floating unit includes a floating ball, a floating plate is installed at the bottom of the floating ball, and the floating plate is installed on the side wall of the suction box, a scale is installed on the floating plate, a boss is installed on the top of the scale, a pressure plate is rotatably installed on the cover plate, a knocking rod is installed at the rotation center of the pressure plate, the end of the knocking rod is in contact with the sound plate installed on the surface of the cover plate, a torsion spring is installed at the rotation center of the pressure plate, and the boss moves downward to squeeze the pressure plate; The sealing unit includes a sealing plate, a scraper is installed on the sealing plate, the sealing plate and the scraper are installed at the bottom of the suction box, a synchronous bracket is installed on the sealing plate, the synchronous bracket slides on the side wall of the suction box, a positioning bracket is installed on the side wall of the floating plate, and a power storage cover is rotatably installed on the positioning bracket; The cam is secured to the side of the gear train and is installed on both sides of the gear train, and the cam is secured on both sides of the gear train with respect to the gear train.

2. The oil tank for a spraying machine according to claim 1, characterized in that: A discharge port is installed at the bottom of the oil tank shell, and a plug is screwed on the discharge port. Several pairs of baffles are vertically installed on the oil tank shell, each baffle plate has a notch, and the notches on adjacent baffle plates do not correspond to each other, and the bottom of the baffle plate is installed with corresponding connecting holes.

3. The oil tank for a spraying machine according to claim 1, characterized in that: The side wall of the oil tank shell is installed with a fixing plate, and a mounting plate is welded to the side wall of the fixing plate. A mounting hole is opened at the corner of the mounting plate. Several pairs of reinforcing ribs are installed on the fixing plate. The side walls of the reinforcing ribs and the side walls of the mounting plate are connected to each other, and the reinforcing ribs are triangular.

4. The oil tank for a spraying machine according to claim 1, characterized in that: The cover plate is provided with a feed port, a sealing plug is installed on the feed port by bolts, mounting ears are welded on the relative surfaces of the oil tank shell and the cover plate, and the mounting ears are provided with bolt holes for connecting the oil tank shell and the cover plate.

5. The oil tank for a spraying machine according to claim 1, characterized in that: A clamping plate is fixedly installed on the side wall of the hose, and the clamping plate is installed on the cover plate. The inlet end of the hose is connected to the spraying assembly of the sprayer. The hose movably passes through the cover plate. A pair of parallel guide rails are provided at the bottom of the suction box, and the pair of guide rails are slidably connected to the sealing plate and the scraper.

6. The oil tank for a spraying machine according to claim 1, characterized in that: A limit rod is slidably installed on the side wall of the floating plate, the top of the limit rod and the cover plate are connected to each other, and the bottom of the limit rod and the bottom of the oil tank shell are movably plugged into each other, a counterweight block is installed at the bottom of the floating plate, scale lines are engraved on the surface of the scale, and a limit plate is installed on the top of the scale, and the cross-sectional area of the limit plate is larger than the cross-sectional area of the scale.

7. The oil tank for a spraying machine according to claim 1, characterized in that: A synchronous shaft is installed at the rotation center of the pressure plate, and mounting seats are rotatably installed at both ends of the synchronous shaft. The mounting seats are welded to the cover plate. A torsion spring is sleeved on the synchronous shaft, one end of the torsion spring is clamped on the mounting seat, and the other end of the torsion spring is clamped on the pressure plate. A hammer head is installed at the end of the knocking rod, and a guide wheel is installed on the boss.

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