Liquid supply system

Abstract

The present invention provides a liquid supply system, which includes a liquid storage device. The liquid storage device includes an outer cylinder, an inner cylinder and a liquid level controller arranged inside the outer cylinder. The liquid input from outside the liquid storage device can enter the outer chamber of the outer cylinder through the liquid level controller and then further enter and be stored in the inner chamber of the inner cylinder. When a main float of the liquid level controller is displaced to a high liquid level position as the liquid level rises, a valve body of the liquid level controller is squeezed by the liquid pressure to close and prevent the liquid from entering the inner and outer chambers. Moreover, the liquid storage device can be connected to a liquid supply device through a pipeline. The liquid supply device determines whether to supply liquid to the liquid storage device based on the pressure of the pipeline, so that the liquid supply system can automatically supply the liquid required by the stage equipment from a remote location.

Description

Technical Field

[0001] The present invention relates to a liquid supply system, and more particularly to a liquid supply system that can automatically supply the liquid required for the operation of a device from a remote location. Background Art

[0002] In addition to lights and sound to show the stage effects on a performance stage, special effects such as smoke and snow may also be used to make the stage effects more attractive. Devices that generate special effects such as smoke and snow usually need to be equipped with a container to hold the liquid for generating smoke or snow. For example, a smoke machine is provided with an oil barrel to hold smoke oil. By pumping out the smoke oil in the oil barrel and heating it to vaporize, smoke is generated. A snow machine is provided with a barrel to hold snow water (or foam water). By pumping out the snow water in the barrel and using air flow to generate bubbles to simulate the snow effect. These smoke machines or snow machines may be installed in positions that are out of reach of ordinary people. Therefore, when the smoke oil in the smoke machine or the snow water in the snow machine is exhausted and needs to be replenished, it will be quite inconvenient. Summary of the Invention

[0003] The object of the present invention is to provide a liquid supply system to solve the above technical problems existing in the prior art.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A liquid supply system includes: a liquid storage device, including: an outer cylinder, including an outer chamber; a liquid level controller located in the outer chamber, the liquid level controller including a first chamber formed inside and a through hole, the first chamber including a channel, the liquid level controller further including a main float that can be displaced between a low liquid level position and a high liquid level position along with the liquid level height, the liquid level controller further including a valve body disposed in the first chamber, the valve body can be displaced to a closed position blocking the first chamber and the channel or a non-closed position communicating the first chamber and the channel; an introducing unit communicatively coupled to the channel of the liquid level controller, and liquid can be input into the outer chamber through the introducing unit; a drainage member accommodated in the outer chamber, the drainage member extending to the bottom of the outer chamber, and allowing the liquid located in the outer chamber to be pumped out through the drainage member. When the main float is located at the low liquid level position, the liquid enters the channel through the introducing unit, pushes open the valve body, enters the outer chamber through the first chamber, and a part of the liquid overflows from the through hole. When the main float is located at the high liquid level position, the through hole is closed, the valve body bears the liquid pressure and blocks the first chamber and the channel, and the liquid cannot enter the first outer chamber and the outer chamber.

[0006] The present invention controls the opening or closing of a through hole by the main floating cylinder driving the main rocker arm to drive the secondary rocker arm, so that the liquid pressure inside the recess of the liquid level controller changes to control the moving part of the valve body to move to the closed position or the open position, and can effectively control whether the liquid can enter the liquid storage device.

[0007] The liquid level controller further includes: a first body located in the outer chamber, the first body includes a recess, a through hole is formed on the first body and communicates with the recess, a second body is combined with the first body, a first chamber is formed on the second body, the valve body is combined between the recess and the first chamber, the valve body further includes a through hole connecting the recess chamber, when the main floating cylinder is in the low liquid level position, the liquid entering the recess is discharged from the through hole, the liquid pressure in the recess is less than the liquid pressure in the first chamber, the valve body moves to the non-closed position, and the channel communicates with the first chamber, when the main floating cylinder is in the high liquid level position, the liquid entering the recess cannot be discharged from the through hole, the liquid pressure in the recess is greater than the liquid pressure in the first chamber, the valve body moves to the closed position, and the channel does not communicate with the first chamber.

[0008] The liquid level controller further includes: a main rocker arm including a first pivoting end and a connecting end, the main rocker arm further includes a second pivoting end formed between the first pivoting end and the connecting end, the first body further includes a first pivot portion, the first pivoting end of the main rocker arm is pivotally connected to the first pivot portion, the main floating cylinder is combined with the connecting end of the main rocker arm, the main floating cylinder moves between the high liquid level position and the low liquid level position to drive the main rocker arm to pivot about the first pivot portion, a secondary rocker arm including a driven end and a pressing end, the secondary rocker arm further includes a pivoting portion located between the driven end and the pressing end, the first body further includes a second pivot portion located between the through hole and the first pivot portion, the pivoting portion of the secondary rocker arm is pivotally connected to the second pivot portion and the driven end is pivotally connected to the second pivoting end of the main rocker arm, when the main floating cylinder is in the low liquid level position, the pressing end of the secondary rocker arm is separated from the through hole, when the main floating cylinder is in the high liquid level position, the pressing end of the secondary rocker arm closes the through hole.

[0009] The liquid level controller further includes: a third body including a liquid dropping port and a third pivot portion; the second body further includes a second chamber separated from the first chamber and a connection hole communicating the first and second chambers; the third body is combined with the second body and covers the outside of the second chamber; a liquid dropping plug head slidably combined with the liquid dropping port; a safety rocker arm including a first end and a second end, the safety rocker arm further including a pivot portion formed between the first and second ends, the pivot portion of the safety rocker arm being combined with the third pivot portion; a safety float combined with the first end of the safety rocker arm, the safety float being displaced between a non-overhigh liquid level position and an overhigh liquid level position as the liquid level height changes; when the safety float is located at the non-overhigh liquid level position, the liquid dropping plug head does not block the liquid dropping port, and the liquid entering the first chamber enters the second chamber through the connection hole and discharges from the liquid dropping port; when the safety float is located at the overhigh liquid level position, the liquid dropping plug head blocks the liquid dropping port, causing the liquid in the second chamber not to discharge from the liquid dropping port.

[0010] Through the setting of the safety float, in the state of excessive supply of the liquid supply device, when the liquid level inside the liquid storage device causes the safety float to be displaced from the non-overhigh liquid level position to the overhigh liquid level position, even if the pump of the liquid supply device remains operating, the liquid level controller can still prevent the liquid from continuously injecting into the inner chamber and the outer chamber, so that the liquid level height of the liquid storage device will not exceed the top cover and overflow.

[0011] Wherein the valve body includes a fixing portion formed on the outer periphery and a movable portion located inside the fixing portion, the through hole is formed in the movable portion, the fixing portion of the valve body is clamped between the first and second bodies, the second body further includes an inner flange formed in the first chamber and located outside the channel, when the valve body is in the closed position, the movable portion abuts against the inner flange, and when the valve body is in the non-closed position, the movable portion is separated from the inner flange.

[0012] The described liquid supply system further includes: an inner cylinder accommodated in the outer chamber of the outer cylinder, the inner cylinder including an inner chamber and a notch communicating with the outer chamber; the liquid level controller includes a nozzle, the nozzle including a flow channel communicating with the first chamber, the nozzle of the liquid level controller is combined with the notch of the inner cylinder, the liquid entering the first chamber enters the outer chamber through the flow channel of the nozzle and the notch, and the liquid overflowing from the through hole enters the inner chamber.

[0013] The described liquid supply system further includes: a guiding float, which is accommodated in the outer accommodation chamber. The guiding float includes a neck and a seal sleeved around the outer periphery of the neck. The inner cylinder further includes an end wall formed at the bottom of the inner accommodation chamber. The end wall includes an opening communicating the inner accommodation chamber with the outer accommodation chamber. The end wall further includes a closed surface formed around the opening and located outside the inner accommodation chamber. The neck of the guiding float is slidably combined with the opening and the seal is located outside the inner accommodation chamber. The guiding float can be displaced to a blocking position or a non-blocking position along with the liquid level height in the outer accommodation chamber. When the guiding float is in the blocking position, the outer accommodation chamber is not communicated with the inner accommodation chamber. When the guiding float is in the non-blocking position, the outer accommodation chamber is communicated with the inner accommodation chamber.

[0014] Through the design of the guiding float, the outer accommodation chamber that supplies liquid to the stage equipment is independently separated from the main float that controls whether to continuously receive the liquid from the liquid supply equipment. In this way, it is possible to avoid the problem that the pump of the liquid supply equipment starts and stops repeatedly in a short time when the liquid level is at the critical level and changes repeatedly between the high liquid level position and the low liquid level position in a short time.

[0015] The described liquid supply system further includes: a liquid supply device, which includes an input joint and an output joint. The liquid supply device further includes a pump connected between the input joint and the output joint. The liquid supply device also includes a first pressure switch connected between the input joint and the output joint through an internal pipeline. The output end of the liquid supply device is connected to the introduction unit of the liquid storage device. When the first pressure switch detects that the pressure in the internal pipeline is higher than 3.5 kg / cm 2 , it controls the pump to stop operating. When the first pressure switch detects that the pressure in the internal pipeline is lower than 2.8 kg / cm 2 , it controls the pump to operate. When the main float is at the low liquid level, the pressure in the internal pipeline is lower than 2.8 kg / cm 2 . When the main float is at the high liquid level, the pressure in the internal pipeline is higher than 3.5 kg / cm 2 .

[0016] Wherein the liquid supply device further includes a second pressure switch connected between the input joint and the output joint. The set pressure of the second pressure switch is higher than 2.2 kg / cm 2 for ON and lower than 1.5 kg / cm 2 for OFF. When the second pressure switch detects that the pressure in the internal pipeline is lower than 1.5 kg / cm 2 or the first pressure switch detects that the pressure in the internal pipeline is higher than 3.5 kg / cm 2 , it controls the pump to stop operating. When the second pressure switch detects that the pressure in the internal pipeline is higher than 2.2 kg / cm 2 or the first pressure switch detects that the pressure in the internal pipeline is lower than 2.8 kg / cm 2 , it controls the pump to operate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: It can provide the liquid required for generating special effects by relevant devices on the stage from a remote location.

[0018] The present invention will be more clearly understood in the following detailed description of the illustrative embodiments in conjunction with the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Is an exploded perspective view of the liquid storage device.

[0020] Figure 2 Is Figure 1 An exploded perspective view of the liquid level controller shown in.

[0021] Figure 3 Is Figure 1 A combined view of the liquid storage device.

[0022] Figure 4 Is along Figure 3 A cross-sectional view taken along line 4-4 of.

[0023] Figure 5 Is along Figure 3 A cross-sectional view taken along line 5-5 of.

[0024] Figure 6 Is along Figure 3 A cross-sectional view taken along line 6-6 of.

[0025] Figure 7 Shows an embodiment diagram of the liquid supply system of the present invention using a liquid supply device in cooperation with a liquid storage device.

[0026] Figure 8 Is Figure 7 A top view with the outer shell of the liquid supply device removed.

[0027] Figure 9 Is a state diagram of the liquid supply device supplying liquid to the liquid storage device.

[0028] Figure 10 Shows a state diagram of the liquid overflowing from the through hole after entering the liquid storage device.

[0029] Figure 11 Shows a state diagram of the liquid in the liquid storage device stored to a high liquid level.

[0030] Figure 12 Shows a state diagram after the liquid in the outer chamber of the liquid storage device is pumped out to a low liquid level state and the guiding float is displaced to a non-blocking position.

[0031] Figure 13 Shows a state diagram of the liquid level in the liquid storage device being too high.

[0032] Description of reference numerals: 10 liquid supply system; 12 liquid storage device; 14 liquid supply device; 20 outer cylinder; 22 ear part; 24 outer chamber; 26 top cover; 27 ventilation element; 28 inlet; 30 outlet; 32 fixing part; 34 locking part; 36 inlet joint; 38 outlet joint; 40 top cover sealing ring; 42 inner cylinder; 44 inner chamber; 45 end wall; 46 joint end; 48 notch; 49 joint sleeve; 50 opening; 52 closing surface; 54 convex part; 56 gap; 58 liquid level controller; 60 first body; 61 recess; 62 joint column; 64 first pivot part; 66 second pivot part; 70 column; 72 channel; 74 through hole; 76 main rocker arm; 78 connecting end; 80 first pivoting end; 82 second pivoting end; 83 space; 84 secondary rocker arm; 86 pressing end; 88 driven end; 90 pivoting part; 92 sealing gasket; 94 main floating cylinder; 96 connecting end; 98 second body; 111 first chamber; 113 second chamber; 115 inner flange; 117 outer flange; 119 joint; 131 channel; 133 connecting hole; 134 introducing unit; 135 connecting pipe; 136 socket part; 137 check valve body; 139 check valve block; 151 spring; 153 base; 155 chamber; 156 nozzle; 157 flow channel; 158 restricting part; 159 step part; 171 third body; 173 liquid dropping port; 175 third pivot part; 177 safety rocker arm; 179 first end; 191 second end; 193 pivot part; 195 safety floating cylinder; 197 joint end; 199 valve body; 211 fixing part; 213 movable part; 215 through hole; 217 shaft rod; 219 drainage part; 221 liquid dropping plug; 231 connecting end; 233 gasket; 253 guiding floating cylinder; 255 seal; 256 neck; 257 flange; 271 pump; 273 input joint; 275 output joint; 277 internal pipeline; 279 switch valve; 291 first pressure switch; 292 second pressure switch. Detailed implementation manners

[0033] All the drawings are only for facilitating the explanation of the basic teachings. The number, position, relationship, and dimensional extension of the elements constituting the illustrative embodiments will be described in the drawings or will be within the skills of the industry after reading and understanding the following description. Additionally, after reading and understanding the following description, changes in the precise dimensions and dimensional ratios to accommodate specific forces, weights, strengths, and similar requirements are also within the skills of the industry.

[0034] The same or similar elements are labeled with the same reference numerals in different drawings; also, please understand that terms such as "top", "bottom", "first", "second", "forward", "backward", "reverse", "front", "rear", "height", "width", "length", "end", "side", "horizontal", "vertical", etc. and similar terms are only for the convenience of the viewer to refer to the structure in the drawings and are only used to assist in describing the illustrative embodiments.

[0035] The present invention relates to a liquid supply system, which is a liquid supply system 10 for providing, for example, smoke oil, smoke water or foam water required during the operation of a smoke machine or a foam machine (or a snow machine). Refer to Figures 1 - 6 As shown, the liquid supply system 10 includes at least one liquid storage device 12. The liquid storage device 12 includes an outer cylinder 20, and the outer cylinder 20 includes an outer chamber 24 formed inside and two ears 22 formed at one end of the outer cylinder 20 and located outside.

[0036] The liquid storage device 12 further includes a top cover 26 coupled to the outer cylinder 20. The top cover 26 includes an inlet 28 and an outlet 30 spaced apart from the inlet 28. The top cover 26 is coupled to the upper end of the outer cylinder 20 and covers the outer chamber 24. The inlet 28 and the outlet 30 of the top cover 26 communicate with the outer chamber 24. In addition, a top cover sealing ring 40 (as Figure 5 shown) is provided between the outer peripheral edge of the top cover 26 and the outer cylinder 20, so that the outer peripheral edge of the top cover 26 is closely coupled to the inner peripheral edge of the outer cylinder 20.

[0037] An introducing unit 134, a drainage member 219 and a ventilation element 27 are provided on the top cover 26. The introducing unit 134 includes a connecting pipe 135, a check valve body 137, a spring 151 and a check valve block 139. The spring 151 and the check valve block 139 are accommodated in the check valve body 137. One end of the check valve body 137 is connected to an L-shaped connecting pipe 135. The introducing unit 134 is accommodated in the outer chamber 24 of the outer cylinder 20 and abuts against the inlet 28 of the top cover 26. An inlet joint 36 is screwed to the other end of the check valve body 137 on the outside of the top cover 26. The spring 151 biases the check valve block 139 towards the inlet joint 36, so that only liquid can enter the connecting pipe 135 from one end of the inlet joint 36 and liquid is not allowed to pass through the check valve body 137 from one end of the connecting pipe 135.

[0038] The drainage member 219 is accommodated in the outer chamber 24, and the drainage member 219 abuts against the outlet 30 of the top cover 26. An outlet joint 38 located outside the top cover 26 is screwed to the drainage member 219. One end of the drainage member 219 extends to the bottom of the outer chamber 24. In addition, the ventilation element 27 is located outside the top cover 26 and is screwed to the top cover 26. The through hole of the ventilation element 27 can communicate the outer chamber 24 with the outside of the outer cylinder 20, so that the liquid storage device 12 can maintain atmospheric pressure balance, which helps to transport liquid into or out of the liquid storage device 12.

[0039] The liquid storage device 12 further includes an inner cylinder 42 accommodated in the outer chamber 24. The inner cylinder 42 includes a connecting end 46 and a content chamber 44 extending from the connecting end 46. The inner cylinder 42 further includes a notch 48 extending from the outer peripheral surface to the content chamber 44. The inner cylinder 42 also includes an end wall 45 formed at the bottom of the content chamber 44. The end wall 45 includes an opening 50 communicating with the content chamber 44 (as Figure 1 shown). The end wall 45 further includes a closed surface 52 formed on the outer side of the content chamber 44 and around the opening 50. Substantially, the closed surface 52 is preferably constituted by a conical surface. In addition, the end wall 45 further includes a plurality of convex portions 54 spaced apart from each other in the content chamber 44 and around the opening 50. A gap 56 is formed between any two adjacent convex portions 54. The connecting end 46 of the inner cylinder 42 is combined with the top cover 26, and the peripheral surface of the inner cylinder 42 is radially spaced from the peripheral surface of the outer cylinder 20 (as Figure 4 shown). The drainage member 219 is located between the inner cylinder 42 and the outer cylinder 20, and the introducing unit 134 is located in the content chamber 44.

[0040] The liquid storage device 12 further includes a liquid level controller 58 accommodated in the outer chamber 24. The liquid level controller 58 includes a first body 60 and a main rocker arm 76 pivotally connected to the first body 60. The first body 60 includes a recess 61 extending from the lower surface but spaced from the upper surface. The first body 60 further includes a set of first pivot portions 64 and a set of second pivot portions 66 formed on the upper surface. The first body 60 also includes a through hole 74 extending from the upper surface to the recess 61. The first body 60 further includes a column 70 formed in the recess 61. The column 70 includes a channel 72 formed on the outer peripheral surface and extending along the axial direction of the column 70 and a plurality of connecting columns 62 formed on the outer side and extending upward. The first body 60 is locked to the top cover 26 through the connecting columns 62 and is located in the content chamber 44.

[0041] The main rocker arm 76 includes a first pivot end 80 and a connecting end 78. The main rocker arm 76 further includes a second pivot end 82 formed between the first pivot end 80 and the connecting end 78. A space 83 is further formed between the second pivot end 82 and the connecting end 78. The first pivot end 80 of the main rocker arm 76 is pivotally connected to the first pivot portion 64 of the first body 60. The connecting end 78 of the main rocker arm 76 is located outside the first body 60 and is pivotally connected to a connecting end 96 of a main floating cylinder 94 (as Figure 4 shown). The main floating cylinder 94 is located in the content chamber 44 of the inner cylinder 42. The main floating cylinder 94 can be at a low liquid level position (as Figure 4 shown) or a high liquid level position (as Figure 11The displacement between the positions (as shown), and the main float 94 is displaced between the low liquid level position and the high liquid level position, which drives the main rocker arm 76 to pivot about the first pivot portion 64 as the rotation axis.

[0042] A secondary rocker arm 84 is accommodated in the space 83 of the main rocker arm 76. The secondary rocker arm 84 includes a driven end 88 and a pressing end 86. The secondary rocker arm 84 further includes a pivoting portion 90 formed between the driven end 88 and the pressing end 86. A sealing gasket 92 made of rubber material is provided at the pressing end 86 of the secondary rocker arm 84. The pivoting portion 90 of the secondary rocker arm 84 is pivotally connected to the second pivot portion 66 of the first body 60, and the driven end 88 is pivotally connected to the second pivoting end 82 of the main rocker arm 76 through a shaft rod 217 (as Figure 1 , Figure 4 shown). When the main float 94 is displaced between the low liquid level position (as Figure 4 ) and the high liquid level position (as Figure 11 shown) causing the main rocker arm 76 to pivot, the pressing end 86 of the secondary rocker arm 84 will approach or move away from the through hole 74 of the first body 60 (the pivoting directions of the main rocker arm 76 and the secondary rocker arm 84 are opposite), and when the main float 94 is located at the high liquid level position, the secondary rocker arm 84 closes the through hole 74 by means of the sealing gasket 92 (as Figure 11 shown).

[0043] The liquid level controller 58 further includes a second body 98 combined with the first body 60 and a valve body 199 combined between the first and second bodies 60, 98. The second body 98 includes a first chamber 111 spaced apart from each other and a second chamber 113 located below the first chamber 111. The second body 98 further includes an outer flange 117 formed on the outer periphery of the first chamber 111 and an inner flange 115 formed in the first chamber 111. A joint 119 is formed on the outer periphery of the second body 98, and a channel 131 is formed between the joint 119 and the inner flange 115. The channel 131 is communicated with the first chamber 111 but separated from the second chamber 113. In addition, the second body 98 further includes a connecting hole 133 connecting the first and second chambers 111, 113 and a socket portion 136 formed on the outer periphery. The second body 98 is combined below the first body 60 and covers the recess 61, so that the recess 61 is aligned with the first chamber 111 and the channel 131 (as Figures 4 - 6 shown).

[0044] The valve body 199 is made of elastic rubber material. The valve body 199 includes a fixed portion 211 which is annular and located on the outer periphery, and a movable portion 213 located inside the fixed portion 211. The movable portion 213 includes a through hole 215 penetrating along the longitudinal direction. The fixed portion 211 of the valve body 199 is clamped between the first and second bodies 60 and 98 and is located in the first chamber 111. Substantially, the fixed portion 211 is clamped between the outer flange 117 of the second body 98 and the lower surface of the first body 60. The column 70 of the first body 60 passes through the through hole 215 of the valve body 199. The valve body 199 blocks between the first chamber 111 and the recess 61. The valve body 199 can be in a closed position where the movable portion 213 abuts against the inner flange 115 of the second body 98 to block the communication between the first chamber 111 and the passage 131 (as shown in Figure 5 , Figure 6 ), or in a non-closed position where the movable portion 213 is separated from the inner flange 115 to connect the first chamber 111 and the passage 131 (as shown in Figure 9 , Figure 10 ), and displace between them.

[0045] The liquid level controller 58 also includes a third body 171 combined with the second body 98 and a base 153. The base 153 includes a stepped portion 159 whose shape conforms to that of the third body 171 and a nozzle 156 formed on the outside. The base 153 further includes an L-shaped flow channel 157 extending inward from the nozzle 156 and a tank chamber 155 extending from the stepped portion 159 to the flow channel 157. The base 153 further includes a limiting portion 158 formed on the outer periphery. The base 153 is fixed below the second body 98. The nozzle 156 of the base 153 is aligned with the notch 48 of the inner cylinder 42, and the nozzle 156 is combined with the notch 48 through a coupling sleeve 49. Thus, the liquid entering the tank chamber 155 will enter the outer chamber 24 of the outer cylinder 20 through the notch 48 along the flow channel 157 of the nozzle 156. In addition, the main float 94 is slidably combined with the limiting portion 158, so that the main float 94 cannot displace laterally along an axis perpendicular to the outer cylinder 20.

[0046] The third body 171 includes a set of third pivot portions 175 formed on the lower surface and a liquid dropping port 173 extending from the upper surface to the lower surface. The third body 171 is fixed between the second body 98 and the base 153 and covers the second chamber 113. A gasket 233 is clamped between the third body 171 and the second body 98. In addition, a liquid dropping plug 221 is provided at the liquid dropping port 173 of the third body 171. The liquid dropping plug 221 includes a connecting end 231 extending outside the third body 171 and adjacent to the third pivot portion 175 (as shown in Figure 5 ), and the liquid dropping plug 221 is designed in a suction cup shape (as shown in Figure 5 ,Figure 13 As shown). The liquid discharge plug 221 can be displaced along the liquid discharge port 173 to close or open the liquid discharge port 173.

[0047] The liquid level controller 58 also includes a safety rocker arm 177 combined with the third body 171 and a safety float 195 combined with the safety rocker arm 177. The safety rocker arm 177 includes a first end 179 and a second end 191. The safety rocker arm 177 further includes a pivot portion 193 located between the first and second ends 179, 191. The safety rocker arm 177 is received in the groove chamber 155 of the base 153, and the pivot portion 193 is pivotally connected to the third pivot portion 175 of the third body 171. The second end 191 is combined with the second end 191 of the liquid discharge plug 221. The safety rocker arm 177 pivots to link the head of the liquid discharge plug 221 away from the liquid discharge port 173 (as Figure 5 shown) or seal the liquid discharge port 173 (as Figure 13 shown).

[0048] A combined end 197 of the safety float 195 is pivotally connected to the first end 179 of the safety rocker arm 177. The safety float 195 is further movably combined with the socket portion 136 of the second body 98. Thus, the safety float 195 can be displaced between an excessive liquid level position and a non-excessive liquid level position according to the liquid level height and link the safety rocker arm 177 to pivot.

[0049] The liquid storage device 12 includes a guiding float 253 received in the outer chamber 24. The guiding float 253 includes a neck portion 256 formed on the upper end face and a sealing member 255 provided on the outer periphery of the neck portion 256. The neck portion 256 includes a flange 257 formed at the end and spaced from the sealing member 255. The guiding float 253 is quite close to the bottom of the outer chamber 24, and the neck portion 256 of the guiding float 253 is slidably combined with the opening 50. The outer diameter of the neck portion 256 is slightly smaller than the inner diameter of the opening 50, and the flange 257 of the neck portion 256 is located in the inner chamber 44, while the sealing member 255 is located inside the closing surface 52. When the liquid level in the outer chamber 24 is insufficient, the guiding float 253 is in a non-blocking position (as Figure 4 shown). In this state, the flange 257 abuts against the end face of the convex portion 54, and the sealing member 255 is spaced from the closing surface 52. If the liquid level in the outer chamber 24 exceeds the guiding float 253, the guiding float 253 is displaced from the non-blocking position to the blocking position due to the buoyancy effect (as Figure 11 shown). The flange 257 is spaced from each convex portion 54, and the sealing member 255 closely abuts against the closing surface 52.

[0050] The liquid storage device 12 further includes a fixing member 32 and two locking members 34. The two tail ends of the fixing member 32 are respectively aligned with the two ears 22 of the outer tube 20. The two locking members 34 pass through the fixing member 32 and the two ears 22 respectively. Loosening the two fixing members 32 allows the fixing members 32 to rotate relative to the outer tube 20. Tightening the two fixing members 32 prevents the fixing members 32 from rotating relative to the outer tube 20. In addition, the liquid storage device 12 can be fixed to external objects through the fixing members 32.

[0051] The liquid supply system 10 of the present invention can be used in conjunction with a liquid supply device 14, and the liquid supply device 14 can supply liquid required by one or more liquid storage devices 12 and stage equipment, see Figure 7 , Figure 8 As shown, the liquid supply device 14 includes an input connector 273 and an output connector 275 arranged on both sides, and the liquid supply device 14 further includes a pump 271 and a switch valve 279 arranged inside. The pump 271 and the switch valve 279 are connected to the input connector 273 and the output connector 275 through a plurality of internal pipes 277. In addition, the internal pipes 277 are further connected to a first pressure switch 291 and a second pressure switch 292. The input connector 273 of the liquid supply device 14 can be connected to a liquid supply source (not shown), and the output connector 275 can be connected to the inlet connector 36 of at least one liquid storage device 12, and the outlet connector 38 of the liquid storage device 12 can be connected to stage equipment such as a smoke machine, a snow machine, etc. through a pipe. When the stage equipment is in operation, the required liquid is extracted from the liquid storage device 12 to generate stage special effects such as smoke or snow.

[0052] The purpose of the switch valve 279 is to provide adjustment of the overall pipeline balance pressure when the liquid storage device 12, the liquid supply device 14 and the stage equipment are installed. That is to say, the switch valve 279 is used to provide a pressure relief function when the overall pipeline balance pressure is repeatedly tested during installation, so that the pipeline balance pressure can be repeatedly reset until the pipeline pressure reaches a balance, and when the pipeline pressure reaches a balance, the switch valve 279 is closed so that the liquid supply system 10 can operate normally.

[0053] It is worth mentioning that if the liquid storage device 12 is used with a fog machine, the stored liquid is fog oil or fog water, and if the liquid storage device 12 is used with a snow machine, the stored liquid is foam water. In addition, the first pressure switch 291 is set to a pressure higher than 3.5 kg / cm 2 OFF, less than 2.8kg / cm 2 ON, thereby determining whether the system supplies liquid (such as foam water), and thus it can be recognized that the first pressure switch 291 is responsible for standard pressure detection, and the standard pressure refers to the pressure value at which the liquid storage device 12 needs to be supplemented with liquid through the liquid supply device 14 or stop supplementing liquid.

[0054] The second pressure switch 292 is used to determine whether there is a problem of rupture or detachment in the overall pipeline (which will cause leakage). The set pressure of the second pressure switch 292 is higher than 2.2 kg / cm 2 is ON, and lower than 1.5 kg / cm 2 is OFF. The first and second pressure switches 291 and 292 control the operation or non-operation of the pump 271 by detecting the pressure of the internal pipeline 277 and matching the software set value.

[0055] For the convenience of explanation, it is assumed that a liquid supply device 14 cooperates with a liquid storage device 12 to supply a smoke machine. Therefore, the liquid is smoke oil or smoke water. Further assume that the outer chamber 24 and the inner chamber 44 of the liquid storage device 12 are empty. In this state, the movable part 213 of the valve body 199 is in the closed position (as shown in Figure 5 、 Figure 6 ), the main float 94 is in the low liquid level position (as shown in Figure 4 ), the safety float 195 is in a non-overhigh liquid level position (as shown in Figure 5 ), and the guiding float 253 is in a non-blocking position (as shown in Figure 4 ). When the inside of the liquid storage device 12 is empty (as shown in Figure 4 ), the first pressure switch 291 detects that the pressure in the internal pipeline 277 is lower than 2.8 kg / cm 2 , and outputs a signal to the computer of the liquid supply device 14. Further, the computer of the liquid supply device 14 controls the pump 271 to operate, and the liquid from the liquid supply source is transported through the input joint 273 and the pipe into the liquid storage device 12 via the output joint 275.

[0056] The liquid enters the introduction unit 134 through the inlet joint 36 of the liquid storage device 12, and the pressure of the liquid pushes the one-way valve block 139 to move and compress the spring 151, so that the liquid can enter the connecting pipe 135. Further, the liquid pushes the movable part 213 of the valve body 199 from the closed position (as shown in Figure 6 ) to the non-closed position (as shown in Figure 9 ), so that the liquid can enter the first chamber 111. In addition, a small part of the liquid enters the recess 61 from the channel 72 of the column 70. Refer to Figure 10 . In this state, since the main float 94 is in the low liquid level position, the pressing end 86 of the secondary rocker 84 is far from the through hole 74. Thus, the through hole 74 is not blocked by the gasket 92. Therefore, the liquid in the recess 61 will overflow from the through hole 74 into the inner chamber 44, and the liquid entering the first chamber 111 enters the second chamber 113 through the connecting hole 133 (as shown in Figure 10As shown, since the safety buoy 195 is located at a non-excess liquid level position, the liquid dropping plug head 221 is separated from the liquid dropping port 173 by a distance. Further, the liquid located in the second chamber 113 flows through the liquid dropping port 173 into the tank chamber 155 of the base 153, and the liquid in the tank chamber 155 flows along the flow channel 157 into the outer chamber 24 of the outer cylinder 20.

[0057] It is worth mentioning that since the size of the channel 72 of the column 70 is smaller than the sizes of the connection hole 133 and the liquid dropping port 173, the flow rate of the liquid entering the outer chamber 24 is higher than that entering the inner chamber 44. In addition, since the liquid entering the recess 61 overflows from the through hole 74, the liquid pressure generated in the recess 61 is less than the liquid pressures in the channel 131 and the first chamber 111. Therefore, the movable part 213 of the valve body 199 remains in the non-closed position.

[0058] When the liquid enters the outer chamber 24 and the liquid level in the outer chamber 24 is not high enough to displace the guiding buoy 253 from the non-blocking position to the blocking position, in addition, a small part of the liquid entering the inner chamber 44 will also enter the outer chamber 24 through the gap 56 and the opening 50 between the inner cylinders 42. When the liquid level in the outer chamber 24 rises to a level where the guiding buoy 253 is displaced to the blocking position, the seal 255 of the guiding buoy 253 closely abuts against the closed surface 52 of the inner cylinder 42, causing the liquid level in the outer chamber 24 to gradually rise. When the liquid level in the outer chamber 24 rises above the flow channel 157 of the base 153, the liquid in the outer chamber 24 quickly overflows into the inner chamber 44, further causing the main buoy 94 to quickly rise from the low liquid level position to the high liquid level position as the liquid level in the inner chamber 44 rises.

[0059] Refer to Figure 12 As shown, when the liquid level in the inner chamber 44 rises to a level where the main buoy 94 is displaced to the high liquid level position, the main rocker arm 76 drives the secondary rocker arm 84 to pivot so that the pressing end 86 approaches the through hole 74. Further, the gasket 92 plugs the through hole 74. Therefore, the liquid entering the recess 61 cannot overflow from the through hole 74, but the liquid can still enter the recess 61 through the channel 72 of the column 70. When the liquid pressure in the recess 61 rises to be greater than the liquid pressures in the first chamber 111 and the channel 131, the movable part 213 of the valve body 199 is pushed by the liquid pressure and displaced from the non-closed position to the closed position. Thus, the liquid conveyed from the liquid supply device 14 cannot enter the first chamber 111. In other words, the liquid can only reach the channel 131 and cannot flow further. Further, the continuously operating pump 271 causes the pressure in the internal pipeline 277 to be greater than 3.5 kg / cm 2 , and the computer of the liquid supply system 14 controls the pump 271 to stop operating. Refer to Figure 11 As shown, the liquid storage device 12 is in a state of high (full) liquid level.

[0060] Assume that the fog machine on the stage is operating, and the pump of the fog machine is connected to the outlet connector 38 of the liquid storage device 12 through a pipeline. When the pump of the fog machine is operating, the liquid (fog oil / fog water) in the outer chamber 24 is drawn through the drainage member 219. As the fog machine operates, the liquid level of the outer chamber 24 gradually decreases to a level that cannot support the guide float 253, so that the guide float 253 moves from the blocking position to the non-blocking position. Figure 12 As shown, the liquid originally retained in the inner chamber 44 enters the outer chamber 24 through the gap 56, the opening 50, and the gap between the guide float 253 and the inner cylinder 42, so that the liquid level in the outer chamber 24 increases.

[0061] As the liquid in the inner chamber 44 flows to the outer chamber 24 and the liquid level decreases, the main float 94 loses its buoyancy support and moves from a high liquid level position to a low liquid level position. The main rocker arm 76 is pivoted by the main float 94 and drives the secondary rocker arm 84 to pivot, causing the pressure end 86 to move away from the through hole 74 (such as Figure 4 As shown in FIG. 1 , the sealing gasket 92 does not block the through hole 74, and the liquid in the recessed chamber 61 overflows from the through hole 74, thus causing the pressure of the internal pipe 277 to drop. When the first pressure switch 291 detects that the pressure of the internal pipe 277 drops to 2.8 kg / cm 2 At the following time, the first pressure switch 291 outputs a signal to the computer of the liquid supply device 14, and the computer of the liquid supply device 14 controls the pump 271 to operate again, transporting liquid from the liquid supply source to the liquid storage device 12 until the main float 94 moves to the high liquid level position again.

[0062] Assuming that in some cases, even if the main float 94 is at a high liquid level, the pump 271 of the liquid supply device 14 continues to operate, so that the liquid continues to enter the liquid storage device 12, see Figure 13 As shown, the liquid height in the inner chamber 44 and the outer chamber 24 gradually increases, so that the safety float 195 is displaced from the non-over-high liquid level position to the over-high liquid level position due to the buoyancy of the liquid and links the safety rocker arm 177 to pivot, and further the safety rocker arm 177 links the liquid drop plug 221 to move to and plug the liquid drop port 173. In this state, the through hole 74 is blocked and the liquid drop port 173 is also blocked, so the liquid can only flow to the second chamber 113 and the recessed chamber 61 and cannot continue to move forward, further ensuring that the liquid height will not exceed the height of the top cover 26.

[0063] It is worth mentioning that the ventilation element 27 arranged on the top cover 26 provides air flow when liquid enters the liquid storage device 12 or the stage equipment draws liquid from the liquid storage device 12, so that the internal pressure of the liquid storage device 12 remains roughly equal to the external atmospheric pressure, and both the liquid is transported into the liquid storage device 12 and the liquid is drawn from the liquid storage device 12 to operate smoothly.

[0064] In the present invention, the main floating cylinder 94 drives the main rocker arm 76 to control the opening or closing of the through hole 74 by the secondary rocker arm 84, so that the liquid pressure inside the recess 61 of the liquid level controller 58 changes to control the displacement of the movable part 213 of the valve body 199 to the closed position or the open position, and it is possible to effectively control whether the liquid can enter the inner chamber 44 and the outer chamber 24.

[0065] With the setting of the safety floating cylinder 195, in the state of over-supply of the liquid supply device 14, when the liquid level in the liquid storage device 12 causes the safety floating cylinder 195 to displace from the non-over-high liquid level position to the over-high liquid level position, even if the pump 271 of the liquid supply device 14 remains in operation, the liquid level controller 58 can still prevent the liquid from continuously injecting into the inner chamber 44 and the outer chamber 24, so that the liquid level height of the liquid storage device 12 will not exceed the top cover 26 and overflow.

[0066] Since the liquid storage device 12 is provided with an independent liquid level controller 58, it is allowed that a single liquid supply device 14 supplies liquid to a plurality of liquid storage devices 12 at the same time, and the plurality of liquid storage devices 12 can individually control whether the liquid supplied by the liquid supply device 14 can enter the inner chamber 44 and the outer chamber 24, so that a single liquid supply device 14 can supply liquid to a plurality of liquid storage devices 12 at the same time, and each liquid storage device 12 can supply the liquid required for the operation of more than one stage device.

[0067] With the setting of the safety floating cylinder 195, the safety rocker arm 177, the liquid dropping plug 221 and the liquid dropping port 173, when the liquid level controller 58 fails due to foreign objects or aging after long-term use, resulting in too high a liquid level in the outer chamber 24, causing the safety floating cylinder 195 to rise to the over-high liquid level position, blocking the liquid dropping port 173 to prevent the liquid from continuing to enter the outer chamber 24 and the inner chamber 44, it is possible to prevent the liquid storage device 12 from overflowing when there is a failure, and avoid the liquid dropping onto the consumers on the site. Once the safety floating cylinder 195 rises and the liquid dropping plug 221 and the liquid dropping port 173 are hermetically blocked, it means that there is a failure phenomenon in the oil storage device 12, so it will not open again by itself and must be disassembled for maintenance. Therefore, it is possible to avoid environmental and human pollution caused by the failure of the oil storage device 12.

[0068] It is worth mentioning that the design of the liquid-drop plug 221 is like a mushroom, and its outer periphery is very thin and functions like a suction cup. Once the safety float 195 rises to an excessive liquid level position, the liquid-drop plug 221 sucks the liquid-drop port 173. Since the liquid-drop plug 221, the through hole 74, and the check valve block 139 of the check valve body 137 are all blocked, the entire liquid flow path is in a fully closed state, causing the first, second, and third bodies 60, 98, and 171 to be filled with water and there is a certain water pressure inside. When the water level drops to the point where the safety float 195 and the main float 94 lose the buoyancy support of water, the safety float 195 cannot open the liquid-drop plug 221 either. Because at this time, only the tiny through hole 74 is opened, and there is still a certain pressure inside the first, second, and third bodies 60, 98, and 171, making the weight of the safety float 195 insufficient to counteract the suction force of the liquid-drop plug 221. Thus, the liquid-drop plug 221 remains closed to the liquid-drop port 173. Moreover, the pressure existing inside the first, second, and third bodies 60, 98, and 171 also prevents the liquid connected to the external through the inlet joint 36 from entering the liquid level controller 58. Even if a very small amount of liquid flows into the through hole 74, it is very difficult to continue storing water. In this way, the liquid storage device 12 can be found to be faulty by relevant personnel in a state where the liquid does not leak, and further, the personnel can repair the faulty liquid storage device 12.

[0069] With the design of the inner and outer chambers 44 and 24 of the present invention cooperating with the guiding float 253, the liquid will enter the inner chamber 44 and be retained in the inner chamber 44 only after the liquid level exceeds the flow path 157, so that the main float 94 will not displace between the near high liquid level position (when the liquid supply device 14 supplies liquid) and the high liquid level position (when the liquid supply device 14 does not supply liquid), which can solve the problem of the pump 271 of the liquid supply device 14 starting and closing repeatedly in a short time.

[0070] The basic teachings of the present invention have been described. For those with ordinary skills in the art, many extensions and variations will be obvious. For example, the liquid storage device 12 is not limited to being paired with the liquid supply device 14 described in the drawings and the specification. The liquid storage device 12 can also be paired with other types of liquid supply devices 14. Or, the liquid supply system 10 of the present invention is not limited to being used only in devices such as fog machines and snow machines.

[0071] The above description is illustrative rather than restrictive of the present invention. Those of ordinary skill in the art understand that without departing from the spirit and scope defined by the claims, many modifications, variations, or equivalents can be made, but all will fall within the protection scope of the present invention.

Claims

1. A liquid supply system, characterized in that, it includes a liquid storage device, and the liquid storage device further includes: an outer cylinder including an outer accommodation chamber; a liquid level controller located in the outer accommodation chamber. The liquid level controller includes a first accommodation chamber formed inside and a through hole. The first accommodation chamber includes a channel. The liquid level controller further includes a main float that can displace between a low liquid level position and a high liquid level position along with the liquid level height. The liquid level controller further includes a valve body disposed in the first accommodation chamber. The valve body can displace to a closed position blocking the first accommodation chamber and the channel or a non-closed position allowing the first accommodation chamber and the channel to communicate. The liquid level controller includes a nozzle, and the nozzle includes a flow passage communicating with the first accommodation chamber; an introduction unit communicatively coupled to the channel of the liquid level controller, and through the introduction unit, liquid can be input into the outer accommodation chamber; a drainage member accommodated in the outer accommodation chamber, the drainage member extending to the bottom of the outer accommodation chamber, and allowing the liquid located in the outer accommodation chamber to be drawn out through the drainage member; an inner cylinder accommodated in the outer accommodation chamber of the outer cylinder. The inner cylinder includes an inner accommodation chamber and a notch communicating with the outer accommodation chamber. The nozzle of the liquid level controller is coupled to the notch of the inner cylinder. The inner cylinder further includes an end wall formed at the bottom of the inner accommodation chamber. The end wall includes an opening communicating the inner accommodation chamber and the outer accommodation chamber. The end wall further includes a closed surface formed around the outside of the opening and located outside the inner accommodation chamber. The liquid entering the first accommodation chamber enters the outer accommodation chamber through the flow passage of the nozzle and the notch, and a small amount of liquid overflowing from the through hole enters the inner accommodation chamber; a guiding float accommodated in the outer accommodation chamber. The guiding float includes a neck and a sealing member sleeved around the outside of the neck. The neck of the guiding float is slidably coupled to the opening and the sealing member is located outside the inner accommodation chamber. The guiding float can displace to a blocking position or a non-blocking position along with the liquid level height of the outer accommodation chamber. When the guiding float is located at the blocking position, the outer accommodation chamber and the inner accommodation chamber are not communicated. When the guiding float is located at the non-blocking position, the outer accommodation chamber and the inner accommodation chamber are communicated; when the main float is located at the low liquid level position, the liquid enters the channel through the introduction unit and pushes the valve body to enter the outer accommodation chamber through the first accommodation chamber, and a part of the liquid overflows from the through hole, when the main float is located at the high liquid level position, the through hole is closed and the valve body bears the liquid pressure to block the first accommodation chamber and the channel, and the liquid cannot continue to enter the first accommodation chamber and the outer accommodation chamber.

2. The liquid supply system according to claim 1, characterized in that: the liquid level controller further includes: a first body located in the outer accommodation chamber. The first body includes a recess, and the through hole is formed on the first body and communicates with the recess; a second body coupled to the first body. The first accommodation chamber is formed on the second body. The valve body is coupled between the recess and the first accommodation chamber. The valve body further includes another through hole connecting the channel and the recess; when the main float is located at the low liquid level position, the liquid entering the recess is discharged from the through hole of the first body. The liquid pressure in the recess is less than the liquid pressure in the first accommodation chamber, and the valve body moves to the non-closed position, and the channel of the valve body communicates with the first accommodation chamber. When the main float is at the high liquid level position, the liquid entering the recess cannot be discharged from the through hole of the first body. The liquid pressure in the recess is greater than the liquid pressure in the first chamber, and the valve body moves to the closed position, and the passage of the valve body is not communicated with the first chamber.

3. The liquid supply system according to claim 2, wherein: The liquid level controller further includes: A main rocker arm, including a first pivot end and a connecting end. The main rocker arm further includes a second pivot end formed between the first pivot end and the connecting end. The first body further includes a first pivot portion, and the first pivot end of the main rocker arm is pivotally connected to the first pivot portion. The main float is combined with the connecting end of the main rocker arm, and the main float displaces between the high liquid level position and the low liquid level position to interlock the main rocker arm to pivot about the first pivot portion; A secondary rocker arm, including a driven end and a pressing end. The secondary rocker arm further includes a pivot portion located between the driven end and the pressing end. The first body further includes a second pivot portion located between the through hole of the first body and the first pivot portion. The pivot portion of the secondary rocker arm is pivotally connected to the second pivot portion and the driven end is pivotally connected to the second pivot end of the main rocker arm; When the main float is at the low liquid level position, the pressing end of the secondary rocker arm is separated from the through hole of the first body, When the main float is at the high liquid level position, the pressing end of the secondary rocker arm closes the through hole of the first body.

4. The liquid supply system according to claim 2 or 3, wherein, The liquid level controller further includes: A third body, including a liquid dropping port and a third pivot portion. The second body further includes a second chamber separated from the first chamber and a connecting hole communicating the first and second chambers. The third body is combined with the second body and covers the outside of the second chamber; A liquid dropping plug, slidably combined with the liquid dropping port; A safety rocker arm, including a first end and a second end. The safety rocker arm further includes a pivot portion formed between the first and second ends. The pivot portion of the safety rocker arm is combined with the third pivot portion; A safety float, combined with the first end of the safety rocker arm. The safety float displaces between a non-over-high liquid level position and an over-high liquid level position along with the liquid level height. When the safety float is at the non-over-high liquid level position, the liquid dropping plug does not close the liquid dropping port, and the liquid entering the first chamber enters the second chamber through the connecting hole and liquid drops out from the liquid dropping port. When the safety float is at the over-high liquid level position, the liquid dropping plug closes the liquid dropping port, causing the liquid in the second chamber to be unable to liquid drop out from the liquid dropping port.

5. The liquid supply system according to claim 2, wherein: The valve body includes a fixing portion formed on the outer periphery and a movable portion located inside the fixing portion. The through hole of the valve body is formed in the movable portion. The fixing portion of the valve body is clamped between the first and second bodies. The second body further includes an inner flange formed in the first chamber and located outside the passage. When the valve body is at the closed position, the movable portion abuts against the inner flange. When the valve body is at the non-closed position, the movable portion is separated from the inner flange.

6. The liquid supply system according to claim 1, wherein, further includes: A liquid supply device, including an input connector and an output connector, the liquid supply device further includes a pump connected between the input connector and the output connector, the liquid supply device also includes a first pressure switch connected between the input connector and the output connector through an internal pipeline, the output end of the liquid supply device is connected to the introduction unit of the liquid storage device, when the first pressure switch detects that the pressure in the internal pipeline is higher than 3.5 kg / cm 2 , control the pump to stop operating, when the first pressure switch detects that the pressure in the internal pipeline is lower than 2.8 kg / cm 2 , control the pump to operate; When the main float is at the low liquid level, the internal pipeline pressure is lower than 2.8 kg / cm 2 , When the main float is at the high liquid level, the internal pipeline pressure is higher than 3.5 kg / cm 2 .

7. The liquid supply system according to claim 6, wherein: The liquid supply device further includes a second pressure switch connected between the input joint and the output joint, and the set pressure of the second pressure switch is higher than 2.2 kg / cm 2 is ON and lower than 1.5 kg / cm 2 is OFF. When the second pressure switch detects that the pressure in the internal pipeline is lower than 1.5 kg / cm 2 or the first pressure switch detects that the pressure in the internal pipeline is higher than 3.5 kg / cm 2 , the pump is controlled to stop operating. When the second pressure switch detects that the pressure in the internal pipeline is higher than 2.2 kg / cm 2 or the first pressure switch detects that the pressure in the internal pipeline is lower than 2.8 kg / cm 2 , the pump is controlled to operate.

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