Accurate liquid material conveying equipment with vacuum driving structure

Abstract

The invention discloses accurate liquid material conveying equipment with a vacuum driving structure, and relates to the technical field of conveying equipment.The accurate liquid material conveying equipment comprises a bottom plate and a conveying hose, an upper plate is arranged above the bottom plate, a liquid storage tank is installed at the upper end of the bottom plate, one end of the conveying hose communicates with the interior of the liquid storage tank, and a guide sliding groove is formed in the upper end of the bottom plate; a driving mechanism is arranged at the position, corresponding to the guide sliding groove, of the upper end of the bottom plate, the conveying hose with the reset function is extruded, negative pressure is generated when the conveying hose is reset, liquid materials are extracted, the liquid materials do not make contact with the part providing power, and therefore corrosion to the liquid materials is avoided. Meanwhile, the heating component can heat the conveying hose and the liquid material, solidification and liquidity reduction of the liquid material are avoided, the end of the conveying hose is sealed by arranging the extrusion wheel, so that the roller can conduct repeated extrusion work, and the pressure in the liquid storage tank can be automatically adjusted by arranging the pressure adjusting component.

Description

Technical Field

[0001] This invention relates to the field of conveying equipment technology, specifically to a precision conveying equipment for liquid materials with a vacuum drive structure. Background Technology

[0002] Liquid materials are fundamental raw materials in chemical production processes, and their precise and safe transportation is crucial for ensuring process stability and product quality. Modern chemical production often requires the transfer and metering of various liquid materials with different properties, such as solvents, acids and alkalis, and reaction intermediates. However, many liquid materials are highly corrosive or toxic, placing stringent requirements on the materials and sealing of the transportation equipment. Further complicating matters, some materials are anaerobic, and upon contact with oxygen in the air, they may decompose, polymerize, or deteriorate. Therefore, transportation must be completed in a completely closed, oxygen-free environment. Existing conventional transportation methods, such as using centrifugal pumps and diaphragm pumps, often fail to completely prevent gas infiltration and pose a risk of leakage at the connection between the pump body and pipelines, making it difficult to meet the stringent protection requirements for such sensitive materials.

[0003] After a task is completed, the material remaining in the pump chamber and pipelines of existing power pumps is difficult to clean thoroughly. Especially when conveying corrosive liquids, the residue will continue to corrode the pump body, impeller, or diaphragm and other critical components. Over time, this will lead to decreased equipment performance, shortened lifespan, or even failure. For anaerobic materials, opening the pump body during the cleaning process will introduce air and cause material spoilage. If solvent washing is used, a large amount of mixed waste liquid will be generated, increasing treatment costs and environmental burden. At the same time, frequent disassembly and cleaning maintenance is not only time-consuming and labor-intensive, but also affects production continuity.

[0004] Based on this, a precision liquid material conveying device with a vacuum-driven structure is now provided, which can eliminate the drawbacks of existing devices. Summary of the Invention

[0005] The purpose of this invention is to provide a precise liquid material conveying device with a vacuum-driven structure to solve the problems in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A precision liquid material conveying device with a vacuum-driven structure includes a base plate and a conveying hose. An upper plate is provided above the base plate, and the upper plate is fixedly connected to the base plate by several support rods. A liquid storage tank is installed on the upper part of the base plate. One end of the conveying hose is connected to the inside of the liquid storage tank. A first buckle and a second buckle are provided on the conveying hose. Both the first buckle and the second buckle are installed at the bottom end of the upper plate. A guide groove is provided on the upper part of the base plate, and a drive mechanism for precisely conveying liquid materials is provided at the position corresponding to the guide groove on the upper part of the base plate.

[0007] Based on the above technical solutions, the present invention also provides the following optional technical solutions: In one alternative embodiment: the driving mechanism includes a roller disposed below the delivery hose, the roller being mounted inside a mounting base, the mounting base being mounted on the output end of a first cylinder, the first cylinder being mounted on the upper end of a movable base, the movable base being slidably disposed inside a guide groove, the movable base being mounted on the output end of a second cylinder, the second cylinder being mounted on the upper end of a base plate, the mounting base having sliding holes at both ends, a limiting rod being slidably disposed within the sliding holes, and the limiting rod being mounted on the upper end of the base plate.

[0008] In one alternative: a plurality of mounting slots are arranged on one side of the roller, and heating components are installed in each mounting slot. The heating components are resistance heating tubes, and the rollers are made of metal.

[0009] In one alternative: the delivery hose is made of silicone rubber, and the upper end of the storage tank is connected to the external atmospheric pressure.

[0010] In one alternative embodiment: a squeezing wheel is tightly attached to the delivery hose, the squeezing wheel is installed at the end of the sliding frame, the sliding frame is slidably disposed in the upper limit hole of the upper plate, the upper inner side of the sliding frame is fixedly connected to one end of the first return spring, the other end of the first return spring is installed at the detection end of the tension / compression sensor, the tension / compression sensor is installed at the bottom inner side of the adjustment frame, the adjustment frame is symmetrically slidably provided with first limit frames, the first limit frames are all installed on the first fixed frame, the first fixed frame is fixedly disposed at the upper end of the upper plate, the upper end of the first fixed frame is provided with an adjustment mechanism for adjusting the elastic force of the first return spring, and the upper end of the liquid storage tank is connected to a pressure regulating component for adjusting the internal pressure of the liquid storage tank.

[0011] In one alternative embodiment: the adjusting mechanism includes a nut seat and a lead screw. The nut seat is installed on the upper end of the adjusting frame, and the lead screw is fitted in the middle of the nut seat. One end of the lead screw is rotatably disposed on the upper end of the first fixed frame, and the other end of the lead screw is rotatably disposed in the rotating hole at the upper end of the second fixed frame. The second fixed frame is installed on the upper end of the first fixed frame.

[0012] In one alternative: the lead screw is equipped with an external spline shaft, and an internal spline shaft is fitted on the external spline shaft. The internal spline shaft is fixedly mounted on the bottom end of the handwheel. A second return spring is provided between the bottom end of the handwheel and the end of the external spline shaft. A snap-fit ​​bracket is symmetrically provided at the end of the internal spline shaft. The snap-fit ​​bracket is inserted into the insertion groove at the bottom end of the snap-fit ​​slot. The snap-fit ​​slot is mounted on the upper end of the second fixed frame.

[0013] In one alternative: an extension plate is fixedly provided on one side of the sliding frame, and a pusher is provided above the end of the extension plate. The pusher is fixedly provided at the output end of the third cylinder, and the third cylinder is installed on the upper end of the upper plate.

[0014] In one alternative embodiment: the pressure regulating component includes a connecting pipe, a transition pipe connected to the middle of the connecting pipe, an intake pipe and an exhaust pipe respectively connected to both ends of the connecting pipe, a first sealing seat and a second sealing seat respectively fixed inside the intake pipe and the exhaust pipe, a first sealing plug tightly attached to one end of the first sealing seat, a first guide slide rod fixedly attached to the end of the first sealing plug, a first support frame slidably attached to the end of the first guide slide rod, the first support frame fixedly located inside the intake pipe, a third return spring provided between one end of the first sealing plug and one side of the first support frame, a second sealing plug tightly attached to one end of the second sealing seat, a second guide slide rod fixedly attached to the end of the second sealing plug, a second support frame slidably attached to the end of the second guide slide rod, the second support frame fixedly located inside the exhaust pipe, and a third return spring provided between one end of the second sealing plug and one side of the second support frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention uses a conveying hose with a reset function to generate negative pressure to extract liquid material when the conveying hose resets. The liquid material does not come into contact with the power supply part, thus avoiding corrosion. At the same time, the heating component can heat the conveying hose and the liquid material to prevent the liquid material from solidifying and reducing its fluidity.

[0016] 2. This invention uses a compression roller to seal the end of the conveying hose, allowing the roller to perform repeated compression. The force of the first reset spring is adjusted by the adjustment mechanism, thereby adjusting the force of the compression roller and thus adjusting the material conveying volume. Furthermore, the compression roller can be separated from the conveying hose by the third cylinder, thus meeting different conveying needs. Finally, the pressure regulating component can automatically regulate the internal pressure of the storage tank. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the installation of the first and second clips of the present invention.

[0019] Figure 3 This is a schematic diagram of the installation of the heating component of the present invention.

[0020] Figure 4 This is a schematic diagram of the installation of the voltage regulating component of the present invention.

[0021] Figure 5This is a schematic diagram of the installation of the extrusion wheel of the present invention.

[0022] Figure 6 This is a schematic diagram of the adjustment mechanism of the present invention.

[0023] Figure 7 This is a schematic diagram of the installation of the tension / compression sensor of the present invention.

[0024] Figure 8 This is a schematic diagram of the snap-fit ​​slot and snap-fit ​​bracket structure of the present invention.

[0025] Figure 9 This is a schematic diagram of the voltage regulating component of the present invention.

[0026] Figure reference numerals: 11 Base plate, 12 Liquid storage tank, 13 Delivery hose, 14 Top plate, 15 First buckle, 16 Second buckle, 17 Roller, 18 Mounting base, 19 First cylinder, 20 Moving base, 21 Second cylinder, 22 Limiting rod, 23 Guide groove, 24 Extrusion wheel, 25 Sliding frame, 26 First return spring, 27 Tension / compression sensor, 28 Adjusting frame, 29 Nut seat, 30 Lead screw, 31 First fixing frame, 32 Second fixing frame, 33 Internal spline shaft, 34 Second return spring, 35 Snap-fit ​​groove, 36 Snap-fit ​​bracket, 37 Pressure regulating component, 38 Connecting pipe, 39 Air inlet pipe, 40 First sealing plug, 41 Exhaust pipe, 42 Second sealing plug, 43 Third return spring, 44 Heating component, 45 Third cylinder. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] Example 1

[0029] In one embodiment, such as Figures 1-9 As shown, a precision liquid material conveying device with a vacuum-driven structure includes a base plate 11 and a conveying hose 13. An upper plate 14 is provided above the base plate 11. The upper plate 14 is fixedly connected to the base plate 11 by several support rods. A liquid storage tank 12 is installed on the upper end of the base plate 11. One end of the conveying hose 13 is connected to the inside of the liquid storage tank 12. A first buckle 15 and a second buckle 16 are provided on the conveying hose 13. The first buckle 15 and the second buckle 16 are both installed at the bottom end of the upper plate 14. A guide groove 23 is provided on the upper end of the base plate 11. A drive mechanism for precision conveying of liquid materials is provided at the position corresponding to the guide groove 23 on the upper end of the base plate 11. The drive mechanism facilitates the precise extraction and conveying of liquid materials from the liquid storage tank 12 by the conveying hose 13. The driving mechanism includes a roller 17, which is positioned below the delivery hose 13 and installed inside the mounting base 18. The mounting base 18 is installed at the output end of the first cylinder 19, which is mounted on the upper end of the movable base 20. The movable base 20 is slidably disposed inside the guide groove 23 and installed at the output end of the second cylinder 21, which is mounted on the upper end of the base plate 11. The mounting base 18 has sliding holes at both ends, and a limiting rod 22 is slidably disposed within the sliding holes. The limiting rod 22 is installed on the bottom... When it is necessary to transport the liquid material inside the storage tank 12, the external control component controls the first cylinder 19 to start. The output end of the first cylinder 19 drives the mounting base 18 to rise. The mounting base 18 drives the roller 17 to move at the same time and squeeze the conveying hose 13. Then, the output end of the second cylinder 21 drives the moving base 20 to move, so that the roller 17 moves along the length direction of the guide groove 23 and rolls the conveying hose 13, thereby generating negative pressure at the end of the conveying hose 13, and then drawing out the liquid material inside the storage tank 12.

[0030] The roller 17 has several mounting slots arranged on one side, each containing a heating element 44. The heating element 44 is a resistance heating tube. The roller 17 is made of metal. During operation, the heating element 44 contacts the roller 17, and the heat generated is continuously transferred to the delivery hose 13 to reduce the delivery temperature of the liquid within the delivery hose 13. This ensures that the delivery hose 13 remains at a relatively constant temperature, preventing a decrease in the return capacity of the delivery hose 13 when the temperature is too cold. It also prevents a decrease in the flowability of the delivery liquid within the delivery hose 13, particularly addressing the issue of excessively low liquid temperature near the outlet. The delivery hose 13 is made of silicone rubber. The upper end of the liquid storage tank 12 is connected to the external atmospheric pressure. This setting is used to ensure that the air pressure above the liquid surface in the liquid storage tank 12 is stable and to ensure that the delivery hose 13 can work reliably for a long time.

[0031] Example 2

[0032] The difference between this embodiment and Embodiment 1 is that: a squeezing wheel 24 is closely attached to the delivery hose 13, the squeezing wheel 24 is installed at the end of the sliding frame 25, the sliding frame 25 is slidably disposed in the limiting hole at the upper end of the upper plate 14, the upper inner side of the sliding frame 25 is fixedly connected to one end of the first return spring 26, the other end of the first return spring 26 is installed at the detection end of the tension and compression sensor 27, the tension and compression sensor 27 is installed at the bottom inner side of the adjusting frame 28, the adjusting frame 28 is symmetrically provided with first limiting frames, the first limiting frames are all installed on the first fixed frame 31, the first fixed frame 31 is fixedly disposed at the upper end of the upper plate 14, the upper end of the first fixed frame 31 is provided with an adjusting mechanism for adjusting the elastic force of the first return spring 26, and the upper end of the liquid storage tank 12 is connected to a pressure regulating component 37 for adjusting the internal pressure of the liquid storage tank 12.

[0033] The adjusting mechanism includes a nut seat 29 and a lead screw 30. The nut seat 29 is installed on the upper end of the adjusting frame 28, and the lead screw 30 is fitted in the middle of the nut seat 29. One end of the lead screw 30 is rotatably mounted on the upper end of the first fixed frame 31, and the other end is rotatably mounted in the rotating hole on the upper end of the second fixed frame 32. The second fixed frame 32 is installed on the upper end of the first fixed frame 31. When the conveying hose 13 needs to continuously convey materials, under the action of the first return spring 26, the squeezing wheel 24 squeezes the conveying hose 13, so that its end is in a closed state. Subsequently, the squeezing and releasing of the roller 17 causes the conveying hose 13 to generate negative pressure due to elastic reset, and the material inside the storage tank 12 enters the conveying hose 13. When the conveying hose 13 moves to the end of the guide chute 23, the gas accumulated inside it can push the extrusion wheel 24 to move so that the gas can be discharged. Then the output end of the first cylinder 19 extends and retracts. Under the action of the first return spring 26, the extrusion wheel 24 continues to extrude the conveying hose 13, so that the end of the conveying hose 13 is resealed, thereby ensuring that the internal material will not flow back into the storage tank 12. Through the repeated operation of the roller 17, the material inside the storage tank 12 can be accurately conveyed. If it is necessary to adjust the force of the extrusion wheel 24, the screw 30 can be rotated to change the working height of the adjustment frame 28 under the action of the thread, thereby adjusting the elastic force of the first return spring 26 and realizing the adjustment of the material conveying amount.

[0034] The lead screw 30 is equipped with an external spline shaft, and an internal spline shaft 33 is fitted on the external spline shaft. The internal spline shaft 33 is fixedly mounted on the bottom end of the handwheel. A second return spring 34 is provided between the bottom end of the handwheel and the end of the external spline shaft. A snap-fit ​​bracket 36 is symmetrically provided at the end of the internal spline shaft 33. The snap-fit ​​bracket 36 is inserted into the insertion slot at the bottom end of the snap-fit ​​groove 35. The snap-fit ​​groove 35 is mounted on the upper end of the second fixing frame 32. When the user presses the handwheel, the handwheel drives the snap-fit ​​bracket 36 to disengage from the insertion slot through the internal spline shaft 33. Then, the lead screw 30 can be rotated by the handwheel to adjust the elastic force of the first return spring 26. After adjustment, the handwheel is released, and under the action of the second return spring 34, the snap-fit ​​bracket 36 is reinserted into the insertion slot, thereby fixing the lead screw 30.

[0035] An extension plate is fixedly provided on one side of the sliding frame 25, and a pusher is provided above the end of the extension plate. The pusher is fixedly provided at the output end of the third cylinder 45. The third cylinder 45 is installed on the upper end of the upper plate 14. When it is not necessary for the extrusion wheel 24 to close the end of the conveying hose 13, the third cylinder 45 can be started by an external control component. The output end of the third cylinder 45 drives the pusher to move. The pusher drives the sliding frame 25 to slide through the extension plate, thereby moving the extrusion wheel 24 away from the conveying hose 13 to meet different operating requirements.

[0036] The pressure regulating component 37 includes a connecting pipe 38, with a transition pipe connected to the middle of the connecting pipe 38, and an intake pipe 39 and an exhaust pipe 41 respectively connected to its two ends. A first sealing seat and a second sealing seat are fixedly installed inside the intake pipe 39 and the exhaust pipe 41, respectively. A first sealing plug 40 is tightly attached to one end of the first sealing seat, and a first guide rod is fixedly installed at the end of the first sealing plug 40. A first support frame is slidably installed at the end of the first guide rod. The first support frame is fixedly installed inside the intake pipe 39. A third return spring 43 is provided between one end of the first sealing plug 40 and one side of the first support frame. A second sealing plug 42 is tightly attached to one end of the second sealing seat, and the end of the second sealing plug 42... A second guide slide rod is fixedly provided, and a second support frame is slidably provided at the end of the second guide slide rod. The second support frame is fixedly provided inside the exhaust pipe 41. A third return spring 43 is also provided between one end of the second sealing plug 42 and one side of the second support frame. In use, the adapter pipe is connected to the external gas treatment component. When a negative pressure is generated inside the liquid storage tank 12, the first sealing plug 40 slides and separates from the first sealing seat under the action of the pressure difference. The external gas treatment component can then deliver a specific gas into the liquid storage tank 12. Conversely, when the gas pressure inside the liquid storage tank 12 increases, the second sealing plug 42 separates from the second sealing seat, and the gas inside the liquid storage tank 12 is discharged, thereby effectively balancing the gas pressure inside the liquid storage tank 12.

[0037] The above embodiments disclose a precision liquid material conveying device with a vacuum-driven structure. When the conveying hose 13 needs to continuously convey material, the user presses a handwheel according to the required conveying volume. The handwheel drives the snap-fit ​​bracket 36 via the inner spline shaft 33, causing the snap-fit ​​bracket 36 to disengage from the insertion slot. Subsequently, the handwheel drives the lead screw 30 to rotate, adjusting the working height of the adjusting frame 28 under the action of the thread, thereby adjusting the elasticity of the first return spring 26. Under the action of the first return spring 26, the compression roller 24 compresses the conveying hose 13, causing the end of the conveying hose 13 to be in a closed state. An external control component controls the first cylinder 19 to start. The output end of the first cylinder 19 drives the mounting base 18 to rise. The mounting base 18 drives the roller 17 to move simultaneously, and the roller 17 compresses the conveying hose 13. Then, the... The output end of the second cylinder 21 drives the moving seat 20 to move, causing the roller 17 to move along the length of the guide groove 23. The roller 17 rolls the conveying hose 13, creating a negative pressure at the end of the conveying hose 13, thereby drawing out the liquid material inside the storage tank 12. The material inside the storage tank 12 enters the conveying hose 13. After the conveying hose 13 moves to the end of the guide groove 23, the gas inside the conveying hose 13 pushes the extrusion wheel 24 to move, causing the gas to be discharged. Then, the output end of the first cylinder 19 extends and retracts. Under the action of the first return spring 26, the extrusion wheel 24 continues to extrude the conveying hose 13. The end of the conveying hose 13 is in a closed state, ensuring that the material inside the conveying hose 13 does not flow back into the storage tank 12. Then, the roller 17 repeats the operation, thereby enabling precise delivery of the material inside the storage tank 12. Simultaneously, the transfer pipe connects to the external gas treatment component. When a negative pressure is generated inside the liquid storage tank 12, the first sealing plug 40 slides under the action of the gas pressure, and the first sealing plug 40 separates from the first sealing seat. The external gas treatment component delivers a specific gas into the liquid storage tank 12. Conversely, when the gas pressure inside the liquid storage tank 12 increases, the second sealing plug 42 separates from the second sealing seat, and the gas inside the liquid storage tank 12 is discharged, thereby balancing the gas pressure inside the liquid storage tank 12.

[0038] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A precision liquid material conveying device with a vacuum-driven structure, comprising a base plate (11) and a conveying hose (13), wherein an upper plate (14) is provided above the base plate (11), the upper plate (14) is fixedly connected to the base plate (11) by a plurality of support rods, a liquid storage tank (12) is installed on the upper end of the base plate (11), one end of the conveying hose (13) is connected to the inside of the liquid storage tank (12), and a first buckle (15) and a second buckle (16) are provided on the conveying hose (13), wherein the first buckle (15) and the second buckle (16) are both installed at the bottom end of the upper plate (14), characterized in that, The upper end of the base plate (11) is provided with a guide groove (23), and the upper end of the base plate (11) is provided with a drive mechanism for accurately conveying liquid materials at the position corresponding to the guide groove (23).

2. The precision liquid material conveying device with vacuum drive structure according to claim 1, characterized in that, The driving mechanism includes a roller (17) which is located below the conveying hose (13). The roller (17) is installed inside the mounting base (18). The mounting base (18) is installed at the output end of the first cylinder (19). The first cylinder (19) is installed at the upper end of the movable seat (20). The movable seat (20) is slidably located inside the guide groove (23). The movable seat (20) is installed at the output end of the second cylinder (21). The second cylinder (21) is installed at the upper end of the base plate (11). The mounting base (18) has sliding holes at both ends. A limiting rod (22) is slidably installed in the sliding hole. The limiting rod (22) is installed at the upper end of the base plate (11).

3. The precision liquid material conveying device with vacuum drive structure according to claim 2, characterized in that, The roller (17) has several mounting slots arranged on one side, and each mounting slot is equipped with a heating element (44). The heating element (44) is a resistance heating tube, and the roller (17) is made of metal.

4. The precision liquid material conveying device with vacuum drive structure according to claim 3, characterized in that, The delivery hose (13) is made of silicone rubber, and the upper end of the storage tank (12) is connected to the external atmospheric pressure.

5. The precision liquid material conveying device with vacuum drive structure according to claim 1, characterized in that, The delivery hose (13) is fitted with a squeezing wheel (24), which is installed at the end of the sliding frame (25). The sliding frame (25) is slidably disposed in the upper limit hole of the upper plate (14). The upper inner side of the sliding frame (25) is fixedly connected to one end of the first reset spring (26). The other end of the first reset spring (26) is installed at the detection end of the tension and compression sensor (27). The tension and compression sensor (27) is installed at the bottom inner side of the adjustment frame (28). The adjustment frame (28) is symmetrically slidably provided with a first limit frame. The first limit frames are all installed on the first fixed frame (31). The first fixed frame (31) is fixedly disposed on the upper end of the upper plate (14). The upper end of the first fixed frame (31) is provided with an adjustment mechanism for adjusting the elastic force of the first reset spring (26). The upper end of the liquid storage tank (12) is connected to a pressure regulating component (37) for adjusting the internal pressure of the liquid storage tank (12).

6. The precision liquid material conveying device with vacuum drive structure according to claim 5, characterized in that, The adjustment mechanism includes a nut seat (29) and a lead screw (30). The nut seat (29) is installed on the upper end of the adjustment frame (28). The lead screw (30) is provided in the middle of the nut seat (29). One end of the lead screw (30) is rotatably disposed on the upper end of the first fixed frame (31), and the other end of the lead screw (30) is rotatably disposed in the rotation hole at the upper end of the second fixed frame (32). The second fixed frame (32) is installed on the upper end of the first fixed frame (31).

7. The precision liquid material conveying device with vacuum drive structure according to claim 6, characterized in that, The lead screw (30) is equipped with an external spline shaft, and an internal spline shaft (33) is fitted on the external spline shaft. The internal spline shaft (33) is fixedly mounted on the bottom end of the handwheel. A second return spring (34) is provided between the bottom end of the handwheel and the end end of the external spline shaft. A snap-fit ​​bracket (36) is symmetrically provided at the end of the internal spline shaft (33). The snap-fit ​​bracket (36) is inserted into the insertion groove at the bottom end of the snap-fit ​​slot (35). The snap-fit ​​slot (35) is mounted on the upper end of the second fixed frame (32).

8. The precision liquid material conveying device with vacuum drive structure according to claim 7, characterized in that, An extension plate is fixedly provided on one side of the sliding frame (25), and a pusher is provided above the end of the extension plate. The pusher is fixedly provided at the output end of the third cylinder (45), and the third cylinder (45) is installed on the upper end of the upper plate (14).

9. The precision liquid material conveying device with vacuum drive structure according to claim 5, characterized in that, The pressure regulating component (37) includes a connecting pipe (38), a transition pipe is connected in the middle of the connecting pipe (38), and an air inlet pipe (39) and an exhaust pipe (41) are connected at both ends of the connecting pipe (38). A first sealing seat and a second sealing seat are fixedly provided inside the air inlet pipe (39) and the exhaust pipe (41), respectively. A first sealing plug (40) is tightly attached to one end of the first sealing seat. A first guide rod is fixedly provided at the end of the first sealing plug (40). A first support frame is slidably provided at the end of the first guide rod. The first support frame is fixedly provided inside the air inlet pipe (39). A third return spring (43) is provided between one end of the first sealing plug (40) and one side of the first support frame. A second sealing plug (42) is tightly attached to one end of the second sealing seat. A second guide rod is fixedly provided at the end of the second sealing plug (42). A second support frame is slidably provided at the end of the second guide rod. The second support frame is fixedly provided inside the exhaust pipe (41). A third return spring (43) is provided between one end of the second sealing plug (42) and one side of the second support frame.

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