Air pressure type material pushing structure for flow-state material
By using a pneumatic feeding structure for fluidized materials, and utilizing a press head that can be pressed in and ejected, as well as an air inlet valve, the problem of fluidized materials being difficult to completely discharge is solved, achieving clean, quantitative discharge and convenient use of fluidized materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-15
- Publication Date
- 2026-03-27
AI Technical Summary
In existing technologies, fluid materials (such as honey and other substances with high viscosity and poor flowability) are difficult to completely drain from the bottle, resulting in residues and a poor user experience.
A pneumatic feeding structure for fluidized materials was designed. By using a press head that can be pressed in and ejected in conjunction with an air inlet valve, the air chamber is intermittently filled and pressurized, driving the piston head to advance in one direction and ensuring that the fluidized material is completely discharged.
It achieves clean and quantitative discharge of fluidized material, improves ease of use, controllability and hygiene, prevents backflow or contamination, and has a compact structure and good sealing performance.
Smart Images
Figure CN121734810A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of bottles, and more specifically, to a pneumatic feeding structure for fluidized materials. Background Technology
[0002] A pusher mechanism is a practical tool designed to easily and completely expel liquid from a bottle, widely used in consumer goods industries such as cosmetics and food. This mechanism helps users efficiently utilize residual liquid in the bottle through physical pushing, significantly reducing resource waste caused by the inability to remove the liquid, aligning with current societal expectations for sustainable consumption and environmentally friendly packaging.
[0003] In existing technologies, common material feeding structures typically rely on inverting the container and using gravity to gradually draw the liquid material towards the bottle opening for discharge. However, this method has significant limitations: firstly, the discharge process is slow and depends on the natural flow of the material, resulting in a poor user experience; secondly, for residual material adhering to the bottle wall, bottom, or shoulder, especially for liquids like honey with high viscosity and poor flowability, gravity often cannot completely draw it to the bottle opening, leaving a certain amount of liquid material remaining inside the bottle. This leads to incomplete discharge of the liquid material, thus failing to meet practical needs. Summary of the Invention
[0004] The purpose of this invention is to provide a pneumatic feeding structure for fluidized materials, which aims to solve the problem of incomplete feeding of fluidized materials in the prior art.
[0005] The present invention is implemented as follows: a fluid material pneumatic pusher structure includes a cylindrical bottle body with a cavity extending along the axial direction of the bottle body; the cavity extends through the front end of the bottle body to form a discharge port for discharging the fluid material; the bottle body is provided with a removable cap that seals the discharge port; the cavity extends through the rear end of the bottle body to form a rear opening. The bottle cavity is provided with a piston head that advances unidirectionally toward the discharge port. The piston head divides the bottle cavity into a material cavity for placing the fluid material and an air cavity for unidirectional inflation. The material cavity is located between the discharge port and the piston head. The liquid outlet is connected to the material cavity. The air cavity is located between the piston head and the rear opening. A pressing head is inserted into the air cavity, which moves towards the air cavity or moves away from the air cavity. The pressing head is formed at the end of the bottle body and passes through the rear opening. The pressing head is provided with an air inlet channel for one-way air entry into the air cavity, and the air inlet channel is provided with an inward one-way opening air valve. When the pressing head moves toward the air chamber, the air inlet valve closes, the air inlet passage closes, the internal pressure of the air chamber increases, and the piston head moves toward the material chamber, squeezing the fluid material in the material chamber toward the outlet; when the pressing head moves away from the air chamber and pops out, the internal pressure of the air chamber decreases, the air inlet valve opens, the air inlet passage opens, and air enters the air chamber through the air inlet passage.
[0006] Furthermore, a spring is provided in the air cavity, with the inner end of the spring fixedly arranged and the outer end of the spring abutting against the pressing head; when the pressing head moves toward the air cavity, the elastic element is elastically compressed, and when the pressing head moves away from the air cavity, the elastic element elastically resets.
[0007] Furthermore, a fixing ring is provided in the air cavity, the fixing ring is fixed on the inner side wall of the air cavity and arranged around the circumference of the air cavity; the fixing ring encloses and forms a through hollow channel, the piston head has a recessed groove in the middle, the recessed groove is arranged towards the air cavity, the diameter of the hollow channel is smaller than the diameter of the recessed groove, and the inner end of the spring is fixedly abutted against the fixing ring.
[0008] Furthermore, a fixing cylinder protrudes from the fixing ring, the hollow channel penetrates the fixing cylinder, and the fixing cylinder and the inner wall of the air cavity enclose an annular area, with the inner end of the spring inserted into the annular area.
[0009] Furthermore, the inner end of the pressing head is inserted into the air cavity, and the outer end of the pressing head is exposed outside the air cavity. The outer end of the pressing head forms a pressing plate, and the diameter of the pressing plate is larger than the diameter of the rear opening.
[0010] Furthermore, the inner end of the air intake passage penetrates the inner end of the pressing head to form an inner air port, and the outer end of the air intake passage penetrates the outer end of the pressing head to form an outer air port. The outer air port is arranged in an open state, and the air intake valve is located at the inner air port. The pressing plate is recessed in the middle to form a recessed area, and the outer air port is formed at the bottom of the recessed area; the pressing plate is provided with an air guide channel, the inner end of the air guide channel is connected to the air inlet channel, and the outer end of the air guide channel penetrates through the side of the pressing plate.
[0011] Furthermore, the inner end of the pressing head is connected to a rubber plate, a hollow area is formed in the middle of the rubber plate, and a rubbery swing plate is provided in the hollow area. The diameter of the swing plate is larger than the diameter of the inner air port, and the swing plate is connected to the rubber plate as a whole. The oscillating plate forms the air intake valve. When the oscillating plate abuts against the inner air port, it closes the inner air port. When the oscillating plate swings inward away from the inner air port, the inner air port opens. When the pressing head moves toward the air chamber, the swing plate abuts against the inner air port, closing the inner air port and the air inlet. When the pressing head moves away from the air chamber, the swing plate swings inward away from the inner air port, opening the inner air port and the air inlet.
[0012] Furthermore, the outer periphery of the pressing head is provided with a positioning groove, the positioning groove extends along the moving direction of the pressing head, and a positioning ring is fitted on the bottle body. The positioning ring has a positioning block embedded in the air cavity, and the positioning block is placed in the positioning groove. When the pressing head moves toward the air chamber to its limit position, or when the pressing head moves away from the air chamber to its limit position, the positioning block abuts against the end of the positioning groove.
[0013] Furthermore, a stepped ring is provided in the middle of the inner wall of the recessed groove, and the stepped ring is arranged towards the air cavity; a central shaft is provided in the middle of the recessed groove, the central shaft is fixedly connected to the piston head, and a movable cylinder that reciprocates along the axial direction of the central shaft is sleeved on the central shaft. The recessed groove is provided with a plurality of elastic plates, which are arranged circumferentially around the central axis; the inner end of the elastic plate is connected to the movable cylinder, and the outer end of the elastic plate is movably overlapped on the stepped ring; there is an elastic gap between adjacent elastic plates, and the elastic plates are arranged inwardly along the depth direction of the recessed groove. When the pressing head moves toward the air chamber, the outer ends of the plurality of elastic plates press against the stepped ring to restrict the piston head from translating toward the material chamber along the axial direction of the material chamber.
[0014] Furthermore, the outer end of the elastic sheet is bent to form an overlapping piece, which overlaps on the stepped ring; the overlapping piece is provided with a bent insert, and the stepped ring is provided with a slot, in which the insert is embedded to fix the overlapping piece to the stepped ring.
[0015] Compared with the prior art, the pneumatic pusher structure for fluidized materials provided by the present invention, by setting a press head that can be pressed in and ejected, and using it in conjunction with an air inlet valve, realizes intermittent inflation and pressurization of the air chamber, thereby driving the piston head to advance in one direction, thus pushing out the fluidized material in the material chamber cleanly; not only does it make the pneumatic pusher structure for fluidized materials compact and have good sealing performance, preventing the backflow or contamination of fluidized materials, but it also realizes quantitative or controllable discharge of fluidized materials; Meanwhile, the one-way air inlet valve ensures that the pressing head can be automatically replenished with air when it rebounds, preparing it for the next pressing, which greatly improves the overall ease of use, controllability and hygiene. Attached Figure Description
[0016] Figure 1 This is a three-dimensional schematic diagram of the fluid material pneumatic pusher structure provided by the present invention when it is not in use; Figure 2 This is a three-dimensional schematic diagram of the fluid material pneumatic pusher structure provided by the present invention in use; Figure 3 This is a cross-sectional schematic diagram of the pneumatic feeding structure for fluidized materials provided by the present invention; Figure 4 This is an exploded schematic diagram of the fluidized material pneumatic pusher structure provided by the present invention; Figure 5 This is a three-dimensional schematic diagram of the adhesive board provided by the present invention; Figure 6 This is a partial cross-sectional schematic diagram of the piston head provided by the present invention; Figure 7 This is a cross-sectional view of the connection between the movable cylinder and the elastic sheet provided by the present invention; In the diagram: Bottle body 100, cap 101, outlet 102, air chamber 103, fixing ring 1031, hollow channel 1032, fixing cylinder 1033, annular area 1034, material chamber 104, piston head 200, recessed groove 201, stepped ring 202, central shaft 203, movable cylinder 204, elastic sheet 205, overlapping sheet 206, embedded sheet 207, elastic interval 208, pressing head 300, air inlet 301, inner air port 3011, outer air port 3012, air inlet valve 302, pressing plate 303, recessed area 3031, air guide channel 3032, spring 400, rubber plate 500, swing plate 501, positioning ring 600, positioning block 700, positioning groove 800. Detailed Implementation
[0017] 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. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0018] The implementation of the present invention will be described in detail below with reference to specific embodiments.
[0019] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0020] Reference Figure 1-7 The image shows a preferred embodiment of the present invention.
[0021] A fluidized material pneumatic pusher structure includes a cylindrical bottle body 100 with a cavity extending along the axial direction of the bottle body 100. The cavity extends through the front end of the bottle body 100 to form a discharge port 102 for discharging the fluidized material. The bottle body 100 is provided with a removable cap 101 that seals the discharge port 102. The cavity extends through the rear end of the bottle body 100 to form a rear opening. The bottle cavity is provided with a piston head 200 that moves unidirectionally toward the discharge port 102. The piston head 200 divides the bottle cavity into a material cavity 104 for placing the fluid material and an air cavity 103 for unidirectional inflation. The material cavity 104 is located between the discharge port 102 and the piston head 200, and the liquid outlet is connected to the material cavity 104. The air cavity 103 is located between the piston head 200 and the rear opening. A pressing head 300 is inserted into the air chamber 103, which can be pressed into the air chamber 103 or ejected away from the air chamber 103. The pressing head 300 is formed at the end of the bottle body 100 and passes through the rear opening. The pressing head 300 is provided with an air inlet 301 for one-way air entry into the air chamber 103. The air inlet 301 is provided with an air inlet valve 302 that opens inward in one direction. When the pressing head 300 moves toward the air chamber 103, the air inlet valve 302 closes, the air inlet passage 301 closes, the internal pressure of the air chamber 103 increases, and the piston head 200 moves toward the material chamber 104, squeezing the fluid material in the material chamber 104 toward the discharge port 102; when the pressing head 300 moves away from the air chamber 103, the internal pressure of the air chamber 103 decreases, the air inlet valve 302 opens, the air inlet passage 301 opens, and air enters the air chamber 103 through the air inlet passage 301.
[0022] The aforementioned pneumatic pusher structure for fluidized materials, by setting a press head 300 that can be pressed in and ejected, and using it in conjunction with an air inlet valve 302, achieves intermittent inflation and pressurization of the air chamber 103, thereby driving the piston head 200 to advance in one direction, thus pushing out the fluidized material in the material chamber 104 cleanly; this not only makes the pneumatic pusher structure for fluidized materials compact and well-sealed, preventing the backflow or contamination of fluidized material, but also achieves quantitative or controllable discharge of fluidized material; Meanwhile, the one-way air inlet valve 302 ensures that the pressing head 300 can be automatically replenished with air when it rebounds, preparing for the next pressing of the pressing head 300, which greatly improves the overall ease of use, controllability and hygiene.
[0023] The working principle of the fluid material pneumatic pusher structure provided by this invention is as follows: When the user uses the fluid material pneumatic pusher structure, pressing the pressing head 300 causes the spring 400 to immediately contract and compress the space of the air chamber 103, increasing the air pressure in the air chamber 103. This pushes the piston head 200 into the material chamber 104, discharging the fluid material in the material chamber 104. At the same time, the embedded piece 207 of the elastic piece 205 is fixedly connected to the slot of the stepped ring 202, restricting the piston head 200 from translating along the axial direction of the material chamber 104. When the user does not use the fluid material pneumatic pusher structure, the spring 400 returns to its original state, driving the pressing head 300 to rebound. As the air pressure in the air chamber 103 decreases, the air inlet valve 302 opens, and the air inlet channel 301 opens. Outside air enters the air chamber 103 along the air inlet channel 301 until the pressing head 300 pops out to its limit position. In this embodiment, the pressing head 300 can also be arranged in other directions relative to the bottle body 100.
[0024] In this embodiment, a spring 400 is provided in the air cavity 103. The inner end of the spring 400 is fixedly arranged, and the outer end of the spring 400 abuts against the pressing head 300. When the pressing head 300 moves towards the air cavity 103, the elastic element is elastically compressed. When the pressing head 300 moves away from the air cavity 103, the elastic element is elastically reset.
[0025] By incorporating a spring 400 within the air chamber 103, the press head 300 gains an automatic rebound function. This effectively eliminates the cumbersome operation of manually pulling up the press head 300, making the entire process of ejecting the press head 300 smoother and more efficient.
[0026] By utilizing the elastic return characteristic of the spring 400, it is ensured that the pressing head 300 can automatically and quickly pop out in the direction away from the air chamber 103 after each squeeze, thereby automatically restoring the air inlet valve 302 to its initial open state and replenishing air to the air chamber 103. This greatly improves the product's ease of operation, speed and continuity, and user experience, making it possible to complete continuous pressing and dispensing actions with one hand, and making the reciprocating operation of the device smoother and more convenient.
[0027] In this embodiment, a fixing ring 1031 is provided in the air cavity 103. The fixing ring 1031 is fixed on the inner side wall of the air cavity 103 and arranged around the circumference of the air cavity 103. The fixing ring 1031 encloses and forms a through hollow channel 1032. The piston head 200 has a recessed groove 201 in the middle. The recessed groove 201 is arranged facing the air cavity 103. The diameter of the hollow channel 1032 is smaller than the diameter of the recessed groove 201. The inner end of the spring 400 is fixedly abutted against the fixing ring 1031.
[0028] The retaining ring 1031 provides a stable internal support for the spring 400, preventing the spring 400 from shifting or twisting during compression and reset, and ensuring the linearity and consistency of the action of the pressing head 300. Meanwhile, the design of the hollow channel 1032 and the recessed groove 201 indirectly guides or constrains the stroke or reset position of the piston head 200, and ensures that the piston head 200 moves along the material cavity 104, preventing radial movement of the piston head 200, which could lead to jamming or damage. This optimizes the thrust accuracy of the piston head 200 and the sealing performance of the air cavity 103, ultimately enhancing the controllability of the fluid material extrusion and the service life of the device.
[0029] In this embodiment, a fixing cylinder 1033 protrudes from the fixing ring 1031, and a hollow channel 1032 passes through the fixing cylinder 1033. The fixing cylinder 1033 and the inner wall of the air cavity 103 enclose an annular region 1034, and the inner end of the spring 400 is inserted into the annular region 1034.
[0030] In this way, the annular area 1034 formed by the fixed cylinder 1033 and the inner wall of the air cavity 103 provides a stable locking or fitting space for the end of the spring 400, making the installation of the spring 400 more secure and less prone to dislocation or tilting. Meanwhile, the annular region 1034 further ensures that the compression and reset of the spring 400 always proceed along the axial direction, avoiding wear or jamming caused by radial sway, thereby improving the smoothness and reliability of the reciprocating motion of the pressing head 300, and ultimately enhancing the structural stability and consistency of the operation feel of the fluid material pneumatic pusher structure.
[0031] In this embodiment, the inner end of the pressing head 300 is inserted into the air cavity 103, and the outer end of the pressing head 300 is exposed outside the air cavity 103. The outer end of the pressing head 300 forms a pressing plate 303, and the diameter of the pressing plate 303 is larger than the diameter of the rear opening. The pressing plate 303 provides a better finger pressing contact surface, making the application of force comfortable and effortless, and improving the user experience. At the same time, the pressing plate 303 acts as a physical limiter, preventing the pressing head 300 from being excessively ejected or accidentally detached from the bottle body 100 under the reset action of the spring 400, thus ensuring the safety of use and the integrity of the structure.
[0032] In this embodiment, the inner end of the air intake duct 301 penetrates the inner end of the pressing head 300 to form an inner air port 3011, and the outer end of the air intake duct 301 penetrates the outer end of the pressing head 300 to form an outer air port 3012. The outer air port 3012 is arranged in an open state, and the air intake valve 302 is provided in the inner air port 3011. The pressing plate 303 is recessed in the middle to form a recessed area 3031, and the outer end air port 3012 is formed at the bottom of the recessed area 3031. The pressing plate 303 is provided with an air guide channel 3032, the inner end of the air guide channel 3032 is connected to the air inlet channel 301, and the outer end of the air guide channel 3032 penetrates the side of the pressing plate 303.
[0033] On the one hand, the recessed area 3031 can prevent fingers from completely covering the pressing plate 303 and blocking the outer air port 3012, ensuring that the air intake 301 can always be connected with the outside air when the pressing head 300 rebounds, so that the air chamber 103 can be smoothly replenished with air, avoiding the problem of weak or stuck piston head 200 due to poor air intake. On the other hand, the air guide channel 3032 extending from the bottom of the recessed area 3031 to the side provides an additional redundant air intake channel. Even if the outer end air port 3012 is accidentally blocked, air can still enter through the air guide channel 3032, further enhancing the reliability and fault tolerance of the air intake system, thereby ensuring that the device can work stably and continuously under various operating conditions.
[0034] In this embodiment, the inner end of the pressing head 300 is connected to a rubber plate 500, a hollow area is formed in the middle of the rubber plate 500, and a rubbery swing piece 501 is provided in the hollow area. The diameter of the swing piece 501 is larger than the diameter of the inner end air port 3011, and the swing piece 501 is connected to the rubber plate 500 as a whole. The swing plate 501 forms an intake valve 302. When the swing plate 501 abuts against the inner end air port 3011, it closes the inner end air port 3011. When the swing plate 501 swings inward away from the inner end air port 3011, the inner end air port 3011 opens. When the pressing head 300 moves towards the air chamber 103, the swing plate 501 abuts against the inner air port 3011, closing the inner air port 3011 and the air inlet 301. When the pressing head 300 moves away from the air chamber 103, the swing plate 501 swings inward away from the inner air port 3011, opening the inner air port 3011 and the air inlet 301.
[0035] Utilizing the elasticity and flexibility of the swing plate 501 itself, when the pressing head 300 is pressed in, the swing plate 501 can closely fit and seal the inner end air port 3011, effectively preventing high-pressure gas from flowing back from the air chamber 103 to the air inlet 301, thus ensuring the stability of the pressure pushing the piston head 200; when ejecting, the negative pressure in the air chamber 103 causes the swing plate 501 to swing slightly inward, allowing external air to enter smoothly and complete the air replenishment.
[0036] This not only reduces the complexity of parts and the difficulty of assembly, but also ensures that the swing plate 501 has good sealing performance when closed, low resistance when open, and sensitive response, avoiding possible wear, jamming or air leakage problems, and improving the long-term reliability of the intake valve 302 and the overall product life.
[0037] In this embodiment, a positioning groove 800 is provided on the outer periphery of the pressing head 300. The positioning groove 800 extends along the moving direction of the pressing head 300. A positioning ring 600 is sleeved on the bottle body 100. The positioning ring 600 has a positioning block 700 embedded in the air cavity 103. The positioning block 700 is placed in the positioning groove 800. When the pressing head 300 is pressed into the air chamber 103 and moves to its limit position, or when the pressing head 300 is ejected away from the air chamber 103 and moves to its limit position, the positioning block 700 abuts against the end of the positioning groove 800.
[0038] The cooperation between the positioning groove 800 and the positioning block 700 limits the axial movement range of the pressing head 300, preventing it from exceeding the limit position when pressing or popping out, thus avoiding excessive compression or stretching damage to internal components such as the spring 400 and piston head 200, and improving the service life and reliability of the fluid material pneumatic pusher structure. On the other hand, the design provides good radial positioning and circumferential anti-rotation for the pressing head 300, ensuring that its movement trajectory is always consistent with the axis of the bottle body 100, thereby maintaining the accurate alignment of the air inlet valve 302 and the piston head 200, making the pressing and dispensing process smooth, precise and noiseless, and enhancing the product's handling and durability.
[0039] In this embodiment, a stepped ring 202 is provided in the middle of the inner sidewall of the recessed groove 201, and the stepped ring 202 is arranged towards the air chamber 103; a central shaft 203 is provided in the middle of the recessed groove 201, the central shaft 203 is fixedly connected to the piston head 200, and a movable cylinder 204 that reciprocates along the axial direction of the central shaft 203 is sleeved on the central shaft 203. The recessed groove 201 is provided with a plurality of elastic plates 205, which are arranged around the central axis 203 at circumferential intervals. The inner end of the elastic plate 205 is connected to the movable cylinder 204, and the outer end of the elastic plate 205 is movably overlapped on the stepped ring 202. There is an elastic interval 208 between adjacent elastic plates 205, and the elastic plates 205 are arranged inwardly along the depth direction of the recessed groove 201. When the pressing head 300 moves toward the air chamber 103, the outer ends of the multiple elastic plates 205 press against the stepped ring 202 to restrict the piston head 200 from moving translating toward the material chamber 104 along the axial direction of the material chamber 104.
[0040] When the pressing head 300 is pressed in, pushing the piston head 200 to move toward the discharge port 102, the airflow causes the movable cylinder 204 to make a slight displacement along the central axis 203, which in turn drives the outer ends of multiple elastic plates 205 to press against the stepped ring 202. The radial expansion tendency generated by the inclination of the elastic plates 205 and the frictional resistance formed by the stepped ring 202 restrict the radial movement of the piston head 200, which can only move axially toward the material chamber 104. This facilitates precise quantitative discharge and ensures the complete removal of fluid material, preventing excessive extrusion of fluid material due to excessive pressure from the user. At the same time, the flexible contact of the elastic sheet 205 avoids the impact, noise, or wear that may be caused by rigid limiting, thus improving the product's controllability, user experience, and durability.
[0041] In this embodiment, the outer end of the elastic sheet 205 is bent to form an overlapping piece 206, which overlaps on the stepped ring 202. The overlapping piece 206 is provided with a bent insert 207, and the stepped ring 202 is provided with a slot. The insert 207 is embedded in the slot so that the overlapping piece 206 and the stepped ring 202 are fixedly overlapped.
[0042] By precisely engaging the insert 207 with the slot, the connection between the elastic piece 205 and the stepped ring 202 is transformed from a sliding overlapping relationship to a fixed connection in the limiting working state. This prevents the elastic piece 205 from slipping or detaching from the stepped ring 202 when under pressure, ensuring the immediacy, consistency and repeatability of the limiting braking effect.
[0043] This not only enhances the accuracy of piston head 200 stroke control but also avoids fluctuations in the flow rate of fluid material due to slippage. It also reduces wear on the contact surface between elastic plate 205 and stepped ring 202, improving the overall durability and reliability of the structure.
[0044] It should also be noted that the fluid material in this embodiment includes liquids that are relatively viscous or have poor flowability, such as honey.
[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A pneumatic feeding structure for fluidized materials, characterized in that, The bottle includes a cylindrical body with a cavity extending along the axial direction of the body. The cavity extends through the front end of the bottle to form a discharge port for discharging fluid. The bottle is provided with a removable cap that seals the discharge port. The cavity extends through the rear end of the bottle to form a rear opening. The bottle cavity is provided with a piston head that advances unidirectionally toward the discharge port. The piston head divides the bottle cavity into a material cavity for placing the fluid material and an air cavity for unidirectional inflation. The material cavity is located between the discharge port and the piston head. The liquid outlet is connected to the material cavity. The air cavity is located between the piston head and the rear opening. A pressing head is inserted into the air cavity, which moves towards the air cavity or moves away from the air cavity. The pressing head is formed at the end of the bottle body and passes through the rear opening. The pressing head is provided with an air inlet channel for one-way air entry into the air cavity, and the air inlet channel is provided with an inward one-way opening air valve. When the pressing head moves toward the air chamber, the air inlet valve closes, the air inlet passage closes, the internal pressure of the air chamber increases, and the piston head moves toward the material chamber, squeezing the fluid material in the material chamber toward the outlet. When the pressing head moves away from the air chamber, the internal pressure of the air chamber decreases, the air inlet valve opens, the air inlet passage opens, and air enters the air chamber through the air inlet passage.
2. The fluidized material pneumatic pusher structure as described in claim 1, characterized in that, A spring is provided in the air cavity, with the inner end of the spring fixedly arranged and the outer end of the spring abutting against the pressing head; when the pressing head moves toward the air cavity, the elastic element is elastically compressed; when the pressing head moves away from the air cavity, the elastic element elastically returns to its original position.
3. The fluidized material pneumatic pusher structure as described in claim 2, characterized in that, The air chamber is provided with a fixing ring, which is fixed to the inner wall of the air chamber and arranged around the circumference of the air chamber; the fixing ring encloses and forms a through hollow channel, the piston head has a recessed groove in the middle, the recessed groove is arranged towards the air chamber, the diameter of the hollow channel is smaller than the diameter of the recessed groove, and the inner end of the spring is fixedly abutted against the fixing ring.
4. The fluidized material pneumatic pusher structure as described in claim 3, characterized in that, The fixing ring has a protruding fixing cylinder, the hollow channel passes through the fixing cylinder, and the fixing cylinder and the inner wall of the air cavity form an annular area, and the inner end of the spring is inserted into the annular area.
5. The pneumatic feeding structure for fluidized materials as described in any one of claims 1 to 4, characterized in that, The inner end of the pressing head is inserted into the air cavity, and the outer end of the pressing head is exposed outside the air cavity. The outer end of the pressing head forms a pressing plate, and the diameter of the pressing plate is larger than the diameter of the rear opening.
6. The pneumatic feeding structure for fluidized materials as described in any one of claims 1 to 4, characterized in that, The inner end of the air intake passage penetrates the inner end of the press head to form an inner air port, and the outer end of the air intake passage penetrates the outer end of the press head to form an outer air port. The outer air port is arranged in an open state, and the air intake valve is located at the inner air port. The pressing plate is recessed in the middle to form a recessed area, and the outer air port is formed at the bottom of the recessed area; the pressing plate is provided with an air guide channel, the inner end of the air guide channel is connected to the air inlet channel, and the outer end of the air guide channel penetrates through the side of the pressing plate.
7. The fluidized material pneumatic pusher structure as described in claim 6, characterized in that, The inner end of the pressing head is connected to a rubber plate, and a hollow area is formed in the middle of the rubber plate. A rubbery swing plate is provided in the hollow area. The diameter of the swing plate is larger than the diameter of the air port at the inner end. The swing plate is connected to the rubber plate as a whole. The oscillating plate forms the air intake valve. When the oscillating plate abuts against the inner air port, it closes the inner air port. When the oscillating plate swings inward away from the inner air port, the inner air port opens. When the pressing head moves toward the air chamber, the swing plate abuts against the inner air port, closing the inner air port and the air inlet. When the pressing head moves away from the air chamber, the swing plate swings inward away from the inner air port, opening the inner air port and the air inlet.
8. The pneumatic feeding structure for fluidized materials as described in any one of claims 1 to 4, characterized in that, The outer periphery of the pressing head is provided with a positioning groove, which extends along the moving direction of the pressing head. A positioning ring is fitted on the bottle body, and the positioning ring has a positioning block embedded in the air cavity, which is placed in the positioning groove. When the pressing head moves toward the air chamber to its limit position, or when the pressing head moves away from the air chamber to its limit position, the positioning block abuts against the end of the positioning groove.
9. The fluidized material pneumatic pusher structure as described in claim 3, characterized in that, The inner wall of the recessed groove is provided with a stepped ring in the middle, and the stepped ring is arranged towards the air cavity; the recessed groove is provided with a central shaft in the middle, the central shaft is fixedly connected to the piston head, and a movable cylinder that reciprocates along the central shaft is sleeved on the central shaft. The recessed groove is provided with a plurality of elastic plates, which are arranged circumferentially around the central axis; the inner end of the elastic plate is connected to the movable cylinder, and the outer end of the elastic plate is movably overlapped on the stepped ring; there is an elastic gap between adjacent elastic plates, and the elastic plates are arranged inwardly along the depth direction of the recessed groove. When the pressing head moves toward the air chamber, the outer ends of the plurality of elastic plates press against the stepped ring to restrict the piston head from translating toward the material chamber along the axial direction of the material chamber.
10. The pneumatic feeding structure for fluidized materials as described in claim 9, characterized in that, The outer end of the elastic sheet is bent to form an overlapping piece, which overlaps on the stepped ring. The overlapping piece is provided with a bent insert, and the stepped ring is provided with a slot. The insert is embedded in the slot so that the overlapping piece is fixedly overlapped with the stepped ring.