Quantitative size mixing device for printing process

Abstract

A liquid inlet pipe is internally provided with an upper valve, a liquid adding connector is internally provided with a lower valve, a liquid storage tank is internally provided with a floating part for controlling the upper valve to be opened and closed, the floating part is connected with the upper valve through a driving structure, a feeding connector is provided with a discharging structure through a flange, and the feeding connector is connected with the lower valve through a driving structure. A material storage tank is installed above the discharging structure through a flange, a power unit used for driving the discharging structure and the lower valve piece is further installed above the mixing tank, through the linkage design of a floating piece in the liquid storage tank and the upper valve piece, the mechanical action that a floating ball ascends and descends along with the liquid level is utilized, and opening and closing of the upper valve piece are accurately controlled through a driving structure; automatic quantitative storage of liquid slurry is achieved, and insufficient liquid level or excessive liquid adding is avoided; meanwhile, the limiting rod and the power unit are matched to form double guarantees, the power unit can start feeding only when the liquid level reaches the standard, the liquid quantification error is greatly reduced, and it is guaranteed that the feeding amount is consistent every time.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of size mixing equipment, in particular to a quantitative size mixing device for printing process. BACKGROUND

[0002] In the printing process, the size mixing process is a key link to determine the printing quality and production efficiency in the later process. The core requirement is to accurately mix liquid slurry and solid powder additives in a certain proportion, and the mixing uniformity meets the standard. Traditional size mixing equipment relies on manual experience to control the amount of liquid and powder, or uses simple metering components, lacks stable liquid level linkage control mechanism, resulting in large fluctuations in liquid feeding amount, and powder feeding amount cannot be accurately matched with liquid, resulting in significant proportioning error, which directly affects the performance of slurry and sizing effect. At the same time, the liquid feeding system and powder feeding system of most equipment are independent of each other without linkage and cooperation design, which is prone to problems such as liquid injection but no powder feeding or powder feeding in advance leading to caking, not only reducing mixing uniformity, but also causing material waste and equipment cleaning problems. SUMMARY

[0003] The quantitative size mixing device for printing process solves the above problems.

[0004] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: A quantitative size mixing device for printing process, comprising a mixing tank, a mixing unit is installed on the mixing tank, the mixing unit comprises a stirring shaft rotatably installed in the mixing tank through a bearing, stirring blades are welded on the stirring shaft, the upper end of the stirring shaft penetrates through the mixing tank and is above the mixing tank, and the top end of the stirring shaft is connected with the output shaft of a driving motor, the mixing unit can stir and mix various materials in the mixing tank, liquid inlet joints and feeding joints are respectively welded on the left and right sides of the upper end of the mixing tank, a liquid storage tank is installed above the liquid inlet joint, a liquid inlet pipe and a liquid feeding joint are respectively welded on the upper and lower ends of the liquid storage tank, the liquid feeding joint is connected with the liquid inlet joint through a flange, the liquid inlet pipe is connected with an external water pipe and a water pump through a pipeline, so as to add liquid to be mixed into the liquid storage tank, so that the amount of liquid added into the mixing tank through the liquid storage tank is the same each time, an upper valve is installed in the liquid inlet pipe, a lower valve is installed in the liquid feeding joint, a floating element for controlling the opening and closing of the upper valve is installed in the liquid storage tank, the floating element is connected with the upper valve through a driving structure, a feeding structure is installed on the feeding joint through a flange, a storage tank is installed above the feeding structure through a flange, and a power unit for driving the feeding structure and the lower valve is further installed above the mixing tank.

[0005] Preferably, the upper valve piece comprises an upper valve pipe installed in the liquid inlet pipe in a left-right penetrating mode, the left and right ends of the upper valve pipe are blocked by discs, an upper valve rod is slidably installed in the upper valve pipe, the right end of the upper valve rod penetrates the upper valve pipe and is arranged on the right side of the upper valve pipe, a guide sleeve one is welded to the right end of the disc on the right side, a guide groove one is formed in the guide sleeve one, and a guide block one is welded to the outer circle of the upper valve rod and is slidably inserted into the guide groove one, so that the upper valve rod moves linearly left and right without deflection; A part of the upper valve rod inside the upper valve pipe is welded with an upper valve seat, a reset spring one is sleeved on the upper valve rod, the reset spring one is on the right side of the upper valve seat, and the two ends of the reset spring one abut against the upper valve pipe and the upper valve seat respectively, the reset spring one makes the upper valve rod and the upper valve seat always have a tendency to move leftwards, and pistons are arranged on the left and right ends of the outer circle surface of the upper valve seat and seal the inner wall of the upper valve pipe, so as to prevent liquid from penetrating into other parts of the upper valve seat and the upper valve pipe.

[0006] Preferably, an upper communication port is formed in the upper valve pipe in a penetrating mode from top to bottom, the upper communication port is directly below the liquid inlet pipe, an upper opening is formed in the upper valve seat in a penetrating mode from top to bottom, when the liquid inside the liquid storage tank is lower than the set liquid level, the upper opening on the upper valve seat coincides with the upper communication port of the upper valve pipe, so that liquid can be added into the liquid storage tank through the upper opening and the upper communication port. When the liquid inside the liquid storage tank is added to the set position, the upper opening on the upper valve seat is dislocated from the upper communication port of the upper valve pipe, so that liquid cannot continue to be added into the liquid storage tank through the upper opening.

[0007] Preferably, the lower valve piece comprises a lower valve pipe installed in the liquid inlet connector in a left-right penetrating mode, the left and right ends of the lower valve pipe are blocked by discs, a lower valve rod is slidably installed in the lower valve pipe, the right end of the lower valve rod penetrates the lower valve pipe and is arranged on the right side of the lower valve pipe, a guide sleeve two is welded to the right end of the disc on the right side, a guide groove two is formed in the guide sleeve two, and a guide block two is welded to the outer circle of the lower valve rod and is slidably inserted into the guide groove two, so that the lower valve rod moves linearly left and right without deflection. A part of the lower valve rod inside the lower valve pipe is welded with a lower valve seat, a reset spring two is sleeved on the lower valve rod, the reset spring two is on the left side of the lower valve seat, and the two ends of the reset spring two abut against the lower valve pipe and the lower valve seat respectively, the reset spring two makes the lower valve rod and the lower valve seat always have a tendency to move rightwards, and pistons are arranged on the left and right ends of the outer circle surface of the lower valve seat and seal the inner wall of the lower valve pipe, so as to prevent liquid from penetrating into other parts of the lower valve seat and the lower valve pipe.

[0008] Preferably, the lower valve pipe is formed with a lower communication port penetrating through the part of the liquid filling connector, and the lower communication port is directly below the liquid filling connector. The lower valve seat is formed with a lower opening penetrating through the upper and lower directions. When the lower valve rod is not subjected to external force other than the second return spring, the lower valve rod drives the lower valve seat to the right end under the action of the second return spring. At this time, the lower opening on the lower valve seat is misaligned with the lower communication port on the lower valve pipe, and the liquid in the liquid storage tank cannot flow downward into the mixing tank. When the lower valve rod is subjected to a rightward pushing force, the lower valve rod will drive the lower valve seat to move leftward, and the lower valve seat is at the leftmost end. At this time, the lower opening on the lower valve seat is aligned with the lower communication port on the lower valve pipe, and the liquid in the liquid storage tank can flow into the mixing tank.

[0009] Preferably, the liquid storage tank is welded with a sleeve pipe above and below. The floating member includes a drive rod slidingly inserted into the upper sleeve pipe. The upper end of the drive rod penetrates through the upper sleeve pipe and is above the liquid storage tank. The upper end of the drive rod is connected with a driving structure. The lower end of the drive rod is fixed with a floating ball. When the liquid level in the liquid storage tank is added, the floating ball will float upward. When the liquid level in the liquid storage tank decreases, the floating ball will move downward under the action of its own gravity. The lower end of the floating ball is fixed with a limiting rod. The limiting rod is slidingly inserted into the lower sleeve pipe. The lower end of the limiting rod penetrates through the lower sleeve pipe and is below the liquid storage tank. The outer surface of the drive rod and the limiting rod is provided with a piston. The drive rod and the limiting rod are slidingly and sealingly connected with the upper and lower sleeve pipes through the piston.

[0010] Preferably, the driving structure includes a fixed shaft seat fixed above the liquid storage tank. A driving plate is rotatably installed on the fixed shaft seat through a shaft pin. The left end of the driving plate is connected with the right end of the upper valve rod through a pull rope. The right end of the driving plate is connected with the top end of the drive rod through a pull rope. The driving plate is divided into left half and right half parts by the shaft pin. The length ratio of the left half to the right half is 1 / N. The force of the left half of the driving plate is amplified through the lever principle. The buoyancy of the floating ball drives the upper valve rod to move rightward.

[0011] Preferably, the discharging structure includes a discharging pipe fixed above the feeding connector through a flange. The discharging pipe is designed in a cylindrical structure, and a circular structure material cavity is arranged in the discharging pipe. A turnover shaft is rotatably installed in the material cavity through a bearing. A cylindrical structure discharging seat is installed on the turnover shaft. An arc structure storage groove is arranged on the discharging seat. The outer surface of the discharging seat and the inner wall of the material cavity are sealingly designed. The rear end of the turnover shaft penetrates through the discharging pipe and is outside the rear side of the discharging pipe. A gear is installed on the rear end of the turnover shaft.

[0012] Preferably, the power unit comprises a linear track fixed above the mixing tank through a support, a push rod is installed on the linear track through a slider to slide left and right, a push head is welded to the left end of the push rod, a rack is fixed to the right end of the push rod, the rack is in mesh with a gear, and the rack can drive the gear to rotate when moving left, so that the turnover shaft drives the discharging seat to deflect by one hundred and eighty degrees, a driving cylinder is fixed above the mixing tank, and the push rod of the driving cylinder is connected with the push rod through a connecting frame; When the push rod of the driving cylinder is in the retracted state, the push head is at the left end of the limiting rod at this time, and when the floating ball is at the uppermost position, the upper surface of the push head is flush with the bottom end surface of the limiting rod at this time, that is, when the floating ball is at the uppermost position, the push rod of the driving cylinder can drive the push rod to move left, so that the push head can drive the lower valve rod to move left, and the lower valve rod drives the lower valve seat to move left; When the liquid level in the liquid storage tank does not reach the specified liquid level, the bottom end of the limiting rod is below the upper surface of the push head and is interfered by the limiting rod, so that the push rod of the driving cylinder cannot be elongated, and it is ensured that the liquid level in the liquid storage tank reaches the specified liquid level, so that the lower valve member can be opened to add liquid to the mixing tank, and the precision of liquid feeding is ensured.

[0013] The beneficial effects of the present application are: 2. Through the linkage design of the floating member in the liquid storage tank and the upper valve member, the mechanical action of the floating ball with the liquid level is utilized, the opening and closing of the upper valve member are accurately controlled through the driving structure, the automatic quantitative storage of the liquid slurry is realized, and the insufficient or excessive addition of liquid is avoided; meanwhile, the limiting rod cooperates with the power unit to form a double protection, and the power unit can be started to release only when the liquid level meets the standard, the quantitative error of the liquid is greatly reduced, and the feeding amount is consistent each time. 2. Through the synchronous driving of the power unit to open the lower valve member and the turnover of the discharging structure, the liquid slurry accurately flows from the liquid storage tank into the mixing tank at the same time, the powder additive is quantitatively turned over and released through the storage groove of the discharging seat, the liquid and powder are synchronously and cooperatively fed, the powder caking and uneven mixing are avoided from the source, the slurry mixing quality is greatly improved, and the subsequent sizing stability is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A front view of a quantitative size mixing device for printing process is provided in the present application; Figure 2 A front view of a quantitative size mixing device for printing process is provided in the present application; Figure 1 A front view of a quantitative size mixing device for printing process is provided in the present application; Figure 3 A front view of a quantitative size mixing device for printing process is provided in the present application; Figure 2 A front view of a quantitative size mixing device for printing process is provided in the present application; Figure 4 A front view of a quantitative size mixing device for printing process is provided in the present application; Figure 1 A front view of a quantitative size mixing device for printing process is provided in the present application; Figure 5For Figure 4 Structure diagram of middle lower valve and floating element; Figure 6 For Figure 4 Structure diagram of middle lower valve; Figure 7 For Figure 1 Sectional view of middle liquid storage tank, upper valve, lower valve and lower feeding structure; Figure 8 For Figure 3 Structure diagram of middle lower feeding structure and power unit.

[0015] Reference numerals in the drawing: 1, mixing tank; 11, liquid inlet joint; 12, mixing unit; 13, feeding joint; 2, liquid storage tank; 21, liquid feeding joint; 22, liquid inlet pipe; 3, upper valve; 31, upper valve pipe; 311, upper communication port; 32, upper valve seat; 321, upper opening; 33, upper valve rod; 34, reset spring one; 4, lower valve; 41, lower valve pipe; 411, lower communication port; 42, lower valve seat; 421, lower opening; 43, lower valve rod; 44, reset spring two; 5, floating element; 51, limiting rod; 52, floating ball; 53, driving rod; 54, driving structure; 541, fixed shaft seat; 542, driving plate; 543, pull rope one; 544, pull rope two; 6, lower feeding structure; 61, lower feeding pipe; 62, gear; 63, lower feeding seat; 631, turnover shaft; 632, storage groove; 7, power unit; 71, driving air cylinder; 72, pushing rod; 721, pushing head; 73, rack; 74, straight rail; 8, storage tank. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0017] With reference to Figure 1 - Figure 8The utility model provides a kind of quantitative mixing device for printing process, including mixing tank 1, mixing unit 12 is installed on mixing tank 1, mixing unit 12 includes the stirring shaft that is rotatably installed in the inside of mixing tank 1 by bearing, stirring shaft is welded with stirring blade on it, the upper end of stirring shaft passes through mixing tank 1 and is above mixing tank 1, and the top end of stirring shaft is connected with the output shaft of driving motor, mixing unit 12 can be mixed with various materials in the inside of mixing tank 1, the left and right sides of the upper end of mixing tank 1 are welded with liquid inlet joint 11, feed joint 13 respectively, liquid storage tank 2 is installed above liquid inlet joint 11, the upper and lower ends of liquid storage tank 2 are welded with liquid inlet pipe 22 and liquid adding joint 21 respectively, liquid adding joint 21 is connected by flange with liquid inlet joint 11, liquid inlet pipe 22 is connected by pipeline with external water pipe, water pump, to add the liquid that needs to be mixed into liquid storage tank 2, so that the liquid amount that is added into mixing tank 1 through liquid storage tank 2 is same each time, upper valve piece 3 is installed in liquid inlet pipe 22, lower valve piece 4 is installed in liquid adding joint 21, float 5 is installed in liquid storage tank 2, and float 5 is connected with upper valve piece 3 by driving structure 54, feed structure 6 is installed on feed joint 13 by flange, storage tank 8 is installed above feed structure 6 by flange, power unit 7 is also installed above mixing tank 1 for driving feed structure 6, lower valve piece 4.

[0018] Refer to Figure 1 , Figure 5 Upper valve piece 3 includes left and right through installation in liquid inlet pipe 22 upper valve pipe 31, the left and right ends of upper valve pipe 31 are all blocked by disc, upper valve stem 33 is slidably installed in upper valve pipe 31, the right end of upper valve stem 33 passes through upper valve pipe 31 and is placed on the right side of upper valve pipe 31, the right end of the disc on the right side is welded with guide sleeve one, guide groove one is formed in guide sleeve one, guide block one is welded on the outer ring of upper valve stem 33, and guide block one is slidably inserted in guide groove one, so that upper valve stem 33 moves linearly left and right, and does not deflect, the part of upper valve stem 33 in the inside of upper valve pipe 31 is welded with upper valve seat 32, reset spring one 34 is sleeved on upper valve stem 33, reset spring one 34 is on the right side of upper valve seat 32, and the two ends of reset spring one 34 are respectively abutted with upper valve pipe 31 and upper valve seat 32, reset spring one 34 makes upper valve stem 33 and upper valve seat 32 always have the tendency of moving left, the left and right ends of the outer ring surface of upper valve seat 32 are provided with piston, which is sealed with the inner wall of upper valve pipe 31 by piston, to prevent liquid from penetrating into other parts of upper valve seat 32 and upper valve pipe 31.

[0019] Refer to Figure 4 , Figure 5The upper valve tube 31 extends vertically through the liquid inlet tube 22 and forms an upper connecting port 311. The upper connecting port 311 is located directly below the liquid inlet tube 22. The upper valve seat 32 extends vertically through and forms an upper opening 321. When the liquid inside the storage tank 2 is lower than the set liquid level, the upper opening 321 on the upper valve seat 32 coincides with the upper connecting port 311 of the upper valve tube 31, so that liquid can be added into the storage tank 2 through the upper opening 321 and the upper connecting port 311. When liquid is added to the set position inside the storage tank 2, the upper opening 321 on the upper valve seat 32 is misaligned with the upper connecting port 311 of the upper valve pipe 31, so that external liquid cannot continue to be added into the storage tank 2 through the upper opening 321.

[0020] Reference Figure 1 - Figure 6 The lower valve component 4 includes a lower valve tube 41 that is installed through the filling connector 21 on both sides. Both ends of the lower valve tube 41 are sealed by a disc. A lower valve stem 43 is slidably installed inside the lower valve tube 41. The right end of the lower valve stem 43 passes through the lower valve tube 41 and is positioned on the right side of the lower valve tube 41. A guide sleeve 2 is welded to the right end of the disc on the right side. A guide groove 2 is opened in the guide sleeve 2. A guide block 2 is welded to the outer ring of the lower valve stem 43. The guide block 2 is slidably inserted into the guide groove 2 to allow the lower valve stem 43 to move linearly left and right without deflection. The part of the rod 43 inside the lower valve tube 41 is welded with a lower valve seat 42. A return spring 44 is sleeved on the lower valve rod 43. The return spring 44 is located on the left side of the lower valve seat 42, and its two ends abut against the lower valve tube 41 and the lower valve seat 42 respectively. The return spring 44 makes the lower valve rod 43 and the lower valve seat 42 always tend to move to the right. Pistons are provided at both ends of the outer ring surface of the lower valve seat 42. The pistons are sealed to the inner wall of the lower valve tube 41 to prevent liquid from penetrating into the lower valve seat 42 and other parts of the lower valve tube 41.

[0021] Reference Figure 4 , Figure 6 The lower valve tube 41 extends vertically through the liquid filling connector 21 to form a lower connecting port 411, which is located directly below the liquid filling connector 21. The lower valve seat 42 extends vertically through to form a lower opening 421. When the lower valve stem 43 is not subjected to any external force other than the second return spring 44, the lower valve stem 43 drives the lower valve seat 42 to the rightmost end under the action of the second return spring 44. At this time, the lower opening 421 on the lower valve seat 42 is misaligned with the lower connecting port 411 on the lower valve tube 41, and the liquid in the storage tank 2 cannot flow downward into the mixing tank 1. When the lower valve stem 43 is pushed to the right, the lower valve stem 43 will drive the lower valve seat 42 to move to the left and make the lower valve seat 42 at the leftmost end. At this time, the lower opening 421 on the lower valve seat 42 coincides with the lower connecting port 411 on the lower valve pipe 41, and the liquid in the storage tank 2 can flow into the mixing tank 1.

[0022] With reference to Figure 3 - Figure 5 , the liquid storage tank 2 is welded with sleeve pipes above and below, the floating member 5 includes a driving rod 53 slidingly inserted into the sleeve pipe above, the upper end of the driving rod 53 is above the liquid storage tank 2 outside through the sleeve pipe above, and the upper end of the driving rod 53 is connected with a driving structure 54, the lower end of the driving rod 53 is fixed with a float ball 52, when liquid is added into the liquid storage tank 2, the float ball 52 will float upwards, when the liquid level in the liquid storage tank 2 decreases, the float ball 52 will move downwards under the action of its own gravity, the lower end of the float ball 52 is fixed with a limiting rod 51, the limiting rod 51 is slidingly inserted into the sleeve pipe below, and the lower end of the limiting rod 51 is below the liquid storage tank 2 outside through the sleeve pipe below, the outer surface of the driving rod 53 and the limiting rod 51 is provided with a piston, and the driving rod 53 and the limiting rod 51 are slidingly and sealingly connected with the sleeve pipes above and below through the piston.

[0023] With reference to Figure 5 , the driving structure 54 includes a fixed shaft seat 541 fixed above the liquid storage tank 2, a driving plate 542 is rotatably installed on the fixed shaft seat 541 through a shaft pin, the left end of the driving plate 542 is connected with the right end of the upper valve rod 33 through a pull rope one 543, the right end of the driving plate 542 is connected with the top end of the driving rod 53 through a pull rope two 544, the driving plate 542 is divided into two parts of left half and right half by the shaft pin as a boundary, the length ratio of the left half to the right half is 1 / N, the force of the left half of the driving plate 542 is amplified through the lever principle, and the buoyancy of the float ball 52 can drive the upper valve rod 33 to move rightwards; When the float ball 52 drives the driving rod 53 to move upwards, the driving rod 53 will move upwards to make the right end of the driving plate 542 deflect upwards through the pull rope two 544, the left end of the driving plate 542 will deflect downwards, and the pull rope one 543 will be pulled downwards, the pull rope one 543 pulled downwards will pull the upper valve rod 33 to move rightwards, so that the whole upper valve seat 32 moves rightwards; When the liquid in the liquid storage tank 2 is added to the set position, the driving rod 53 rises to the maximum position, at this time, the pull rope one 543 will make the upper valve rod 33 and the upper valve seat 32 move to the rightmost end, the upper opening 321 on the upper valve seat 32 is out of position with the upper communication port 311 of the upper valve pipe 31, so that the liquid outside cannot continue to be added into the liquid storage tank 2 through the upper opening 321.

[0024] With reference to Figure 7 , Figure 8The blanking structure 6 comprises a blanking pipe 61 fixed above the feed joint 13 through a flange, the blanking pipe 61 is designed in a cylindrical structure, a circular structure material cavity is arranged in the blanking pipe 61, a turnover shaft 631 is rotatably arranged in the material cavity through a bearing, a blanking seat 63 in a cylindrical structure is arranged on the turnover shaft 631, an arc-shaped storage groove 632 is arranged on the blanking seat 63, the blanking seat 63 is sealingly arranged between the outer surface of the blanking seat 63 and the inner wall of the material cavity, the solid material in the storage tank 8 can fall into the storage groove 632, the blanking seat 63 turned by 180 degrees can make the solid material in the storage groove 632 fall into the mixing tank 1 through the feed joint 13 and mix with the liquid, the rear end of the turnover shaft 631 penetrates through the blanking pipe 61 and is arranged outside the rear side of the blanking pipe 61, and a gear 62 is arranged on the rear end of the turnover shaft 631.

[0025] With reference to Figure 8 The power unit 7 comprises a linear rail 74 fixed above the mixing tank 1 through a support, a push rod 72 is slidably arranged on the linear rail 74 through a sliding block, a push head 721 is welded to the left end of the push rod 72, a rack 73 is fixed to the right end of the push rod 72, the rack 73 is engaged with the gear 62, the rack 73 can drive the gear 62 to rotate when moving to the left, so that the turnover shaft 631 drives the blanking seat 63 to deflect by 180 degrees, a drive cylinder 71 is fixed above the mixing tank 1, and the push rod of the drive cylinder 71 is connected with the push rod 72 through a connecting frame; When the push rod of the drive cylinder 71 is in a retracted state, the push head 721 is located at the left end of the limiting rod 51 at this time, and when the floating ball 52 is at the uppermost position, the upper surface of the push head 721 is flush with the bottom end surface of the limiting rod 51, that is, when the floating ball 52 is at the uppermost position, the push rod of the drive cylinder 71 can drive the push rod 72 to move to the left, so that the push head 721 can drive the lower valve rod 43 to move to the left, and the lower valve rod 43 drives the lower valve seat 42 to move to the left, so that the liquid in the liquid storage tank 2 can flow into the mixing tank 1, and then after the liquid in the liquid storage tank 2 is discharged, the floating ball 52 has a downward moving trend under the action of gravity, and the limiting rod 51 will fall above the push head 721 and cannot continue to move downward due to the interference of the push head 721, so that the upper valve element 3 is in a closed state, and then the push head 721 moves to the right to the right end of the limiting rod 51, at this time, the lower valve rod 43 and the lower valve seat 42 move to the rightmost position under the action of the return spring two 44, so that the lower valve element 4 is closed, and then the upper valve element 3 can be opened; When the liquid level in the liquid storage tank 2 does not reach the specified liquid level, the bottom end of the limiting rod 51 is below the upper surface of the push head 721 and is interfered by the limiting rod 51, so that the push rod of the drive cylinder 71 cannot be elongated, and when the liquid level in the liquid storage tank 2 reaches the specified liquid level, the lower valve element 4 can be opened to add liquid to the mixing tank 1, so that the precision of liquid feeding is ensured.

[0026] Working principle: in the initial state, the solid material is placed in the storage tank 8, the inside of the liquid storage tank 2 is empty, the float 52 is at the bottom under its own gravity, the driving plate 542 in the driving structure 54 has the same height at both ends, the upper valve rod 33 and the upper valve seat 32 in the upper valve 3 are at the leftmost end under the action of the reset spring 1, the upper opening 321 on the upper valve seat 32 coincides with the upper communication port 311 of the upper valve pipe 31, the lower valve rod 43 drives the lower valve seat 42 to be at the rightmost end under the action of the reset spring 2, the lower opening 421 on the lower valve seat 42 is out of position with the lower communication port 411 on the lower valve pipe 41 at this time, the liquid in the liquid storage tank 2 cannot flow downward to the mixing tank 1, and the liquid will be added to the liquid storage tank 2 under the action of the water pipe and the water pump; As the liquid level in the liquid storage tank 2 gradually rises, the float 52 will also gradually rise, the upward movement of the float 52 will drive the driving rod 53 to move upward, the upward movement of the driving rod 53 will make the right end of the driving plate 542 deflect upward through the pull rope 2, the left end of the driving plate 542 will deflect downward, and the pull rope 1 will be pulled downward, the pull rope 1 will pull the upper valve rod 33 to move rightward, so that the entire upper valve seat 32 moves rightward; When the liquid in the liquid storage tank 2 is added to the set position, the float 52 rises to the highest position, the upper valve rod 33 and the upper valve seat 32 are at the rightmost end under the action of the driving structure 54, the upper opening 321 on the upper valve seat 32 is out of position with the upper communication port 311 of the upper valve pipe 31, so that the liquid outside cannot continue to be added to the liquid storage tank 2 through the upper opening, and the liquid in the liquid storage tank 2 reaches the added standard; At this time, the upper surface of the pushing head 721 is flush with the bottom end surface of the limiting rod 51, the pneumatic driving cylinder 71 is driven, and the push rod of the driving cylinder 71 will drive the pushing rod 72 to move leftward, after the pushing head 721 moves leftward by a distance, it will abut against the lower valve rod 43 and push the lower valve rod 43 to move leftward, so that the lower valve rod 43 drives the lower valve seat 42 to move leftward, so that the lower opening 421 on the lower valve seat 42 coincides with the lower communication port 411 on the lower valve pipe 41, and the liquid in the liquid storage tank 2 flows into the mixing tank 1; At the same time, when the pushing rod 72 and the rack 73 move leftward under the action of the driving cylinder 71, the rack 73 will drive the turnover shaft 631 and the discharging seat 63 to rotate one hundred and eighty degrees through the gear 62, so that the fixed material in the discharging groove 632 of the discharging seat 63 falls into the mixing tank 1 and mixes with the liquid; After the liquid in the liquid storage tank 2 is emptied, the push rod of the driving cylinder 71 is retracted, so that the pushing rod 72 and the rack 73 move rightward to the original position, in the process, the lower valve rod 43 drives the lower valve seat 42 to be at the rightmost end under the action of the reset spring 2, at this time, the lower opening 421 on the lower valve seat 42 is out of position with the lower communication port 411 on the lower valve pipe 41, so that the lower valve 4 is closed; After the push rod 72 continues to move to the right, the push head 721 is out of contact with the limiting rod 51, the floating ball 52 moves downward under the action of gravity, the upper valve rod 33 and the upper valve seat 32 in the upper valve piece 3 move to the left under the action of the reset spring 34, After the liquid in the liquid storage tank 2 is discharged, the floating ball 52 has a downward moving tendency under the action of gravity, and the limiting rod 51 will fall above the push head 721 and cannot continue to move downward due to the interference of the push head 721, thereby making the upper valve piece 3 in a closed state, then the push head 721 moves to the right end of the limiting rod 51, at this time, the lower valve rod 43 and the lower valve seat 42 move to the right end under the action of the reset spring 44, so that the lower valve piece 4 is closed, and then the upper valve piece 3 can be opened, so that the upper opening 321 on the upper valve seat 32 and the upper communication port 311 of the upper valve pipe 31 coincide again, so that the liquid can be added into the liquid storage tank 2 through the upper opening 321 and the upper communication port 311; At the same time, the push rod 72 and the rack 73 are in the returning process, the rack 73 will make the material discharging seat 63 reverse rotate to the original position, and the fixed material will fall into the material storage groove 632 of the material discharging seat 63 and wait for the next time of discharging.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0029] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacement or change within the technical scope disclosed by the present application according to the technical solution and inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A dosing device for the printing process, characterized in that, The utility model provides a kind of mixing tank, mixing tank (1) is equipped with mixing unit (12) on it, the upper end of the mixing tank (1) is respectively welded with liquid inlet connector (11), feed connector (13) on left and right sides, liquid storage tank (2) is installed above the liquid inlet connector (11), the upper and lower ends of the liquid storage tank (2) are respectively welded with liquid inlet pipe (22) and liquid adding connector (21), upper valve piece (3) is installed in the liquid inlet pipe (22), lower valve piece (4) is installed in the liquid adding connector (21), control upper valve piece (3) opening and closing float (5) is installed in the liquid storage tank (2), float (5) is connected with upper valve piece (3) by drive structure (54), feed structure (6) is installed on the feed connector (13) by flange, storage tank (8) is installed above the feed structure (6) by flange, power unit (7) for driving feed structure (6), lower valve piece (4) is also installed above the mixing tank (1).

2. A dosing device for printing processes according to claim 1, characterized in that The upper valve piece (3) includes upper valve pipe (31) installed in the liquid inlet pipe (22) left and right through, upper valve rod (33) is slidably installed in the upper valve pipe (31), the right end of the upper valve rod (33) passes through the upper valve pipe (31) and is placed on the right side of the upper valve pipe (31), the part of the upper valve rod (33) inside the upper valve pipe (31) is welded with upper valve seat (32), reset spring one (34) is sleeved on the upper valve rod (33), reset spring one (34) is on the right side of the upper valve seat (32), and the both ends of reset spring one (34) are respectively abutted with the upper valve pipe (31) and the upper valve seat (32).

3. A dosing device for printing processes according to claim 2, characterized in that The part of the upper valve pipe (31) in the liquid inlet pipe (22) is formed with upper communication port (311) up and down through, and the upper communication port (311) is directly below the liquid inlet pipe (22), and the upper valve seat (32) is formed with upper opening (321) up and down through.

4. A dosing device for printing processes according to claim 1, characterized in that The lower valve piece (4) includes lower valve pipe (41) installed in the liquid adding connector (21) left and right through, lower valve rod (43) is slidably installed in the lower valve pipe (41), the right end of the lower valve rod (43) passes through the lower valve pipe (41) and is placed on the right side of the lower valve pipe (41), the part of the lower valve rod (43) inside the lower valve pipe (41) is welded with lower valve seat (42), reset spring two (44) is sleeved on the lower valve rod (43).

5. A dosing device for printing processes according to claim 4, characterized in that The part of the lower valve pipe (41) in the liquid adding connector (21) is formed with lower communication port (411) up and down through, and the lower communication port (411) is directly below the liquid adding connector (21), and the lower valve seat (42) is formed with lower opening (421) up and down through.

6. A dosing device for printing processes according to claim 1, characterized in that The liquid storage tank (2) is welded with sleeve pipes above and below, the floating element (5) comprises a driving rod (53) slidingly inserted into the sleeve pipes above and below, the upper end of the driving rod (53) penetrates through the sleeve pipe above and is located above the liquid storage tank (2), the upper end of the driving rod (53) is connected with a driving structure (54), the lower end of the driving rod (53) is fixedly connected with a float ball (52), the lower end of the float ball (52) is fixedly connected with a limiting rod (51), the limiting rod (51) is slidingly inserted into the sleeve pipe below, and the lower end of the limiting rod (51) penetrates through the sleeve pipe below and is located below the liquid storage tank (2).

7. A dosing device for printing processes according to claim 6, characterized in that The driving structure (54) comprises a fixed shaft seat (541) fixed above the liquid storage tank (2), a driving plate (542) is rotatably installed on the fixed shaft seat (541) through a shaft pin, the left end of the driving plate (542) is connected with the right end of the upper valve rod (33) through a pull rope I (543), and the right end of the driving plate (542) is connected with the top end of the driving rod (53) through a pull rope II (544).

8. A dosing device for printing processes according to claim 7, characterized in that The discharging structure (6) comprises a discharging pipe (61) fixed above the feeding connector (13) through a flange, the discharging pipe (61) is designed in a cylindrical structure, a circular material cavity is arranged in the discharging pipe (61), a turnover shaft (631) is rotatably installed in the material cavity through a bearing, a cylindrical discharging seat (63) is installed on the turnover shaft (631), an arc-shaped storage groove (632) is formed in the discharging seat (63), the rear end of the turnover shaft (631) penetrates through the discharging pipe (61) and is located at the rear side of the discharging pipe (61), and a gear (62) is installed on the rear end of the turnover shaft (631).

9. A dosing device for a printing process according to claim 8, characterized in that The power unit (7) comprises a linear rail (74) fixed above the mixing tank (1) through a support, a pushing rod (72) is slidingly installed on the linear rail (74) through a sliding block, a pushing head (721) is welded to the left end of the pushing rod (72), a rack (73) is fixed to the right end of the pushing rod (72), the rack (73) is engaged with the gear (62), a driving cylinder (71) is fixed above the mixing tank (1), and the pushing rod of the driving cylinder (71) is connected with the pushing rod (72) through a connecting frame.

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