A suspension delivery system

Abstract

This invention relates to the field of fluid transport equipment technology, specifically to a suspension transport system. The suspension transport system provided by this invention includes a cylinder lifting mechanism, a cylinder assembly, a piston assembly, a tank, and a switching valve assembly. The tank contains liquid, and the top and bottom of the tank are respectively provided with a first opening and a second opening. The switching valve assembly is sealed and installed at the second opening at the bottom of the tank. The cylinder assembly includes a cylinder shell and a straight pipe section connected in sequence. The straight pipe section is located at the bottom of the cylinder shell and extends from the first opening at the top of the tank into the interior of the tank. This suspension transport system is less prone to clogging when transporting mixed suspensions formed by solvents, particles, and water, and has a simple structure and is easy to maintain.

Description

Technical Field

[0001] This invention relates to the field of fluid transport equipment technology, and more specifically to a suspension transport system. Background Technology

[0002] Existing plunger pumps are prone to clogging when conveying mixed suspensions of solvents, particles, and water. The reasons for this clogging are roughly as follows: First, plunger pumps rely on the alternating opening and closing of suction and discharge valves to achieve suction and discharge; these valves, typically ball valves or cone valves, are the most critical areas prone to clogging. Second, particles or viscous suspensions are more likely to deposit in areas where the flow rate decreases instantaneously, such as near valves, narrow passages in pipe bends, and corners. Third, the relatively narrow flow channels inside plunger pumps can easily become bottlenecks for particle congestion. Furthermore, existing plunger pumps have complex internal structures, numerous components, and high maintenance costs.

[0003] Currently, there is a lack of suspension conveying equipment that can effectively transport suspensions, is not prone to clogging, and has a simple structure and is easy to maintain. Summary of the Invention

[0004] (I) The problem to be solved by the present invention is that there is currently a lack of a suspension conveying device that can effectively transport suspensions, is not prone to clogging, and has a simple structure and is easy to maintain.

[0005] (II) Technical Solution

[0006] A suspension conveying system includes a cylinder lifting mechanism, a cylinder assembly, a piston assembly, a tank, and a switching valve assembly; the tank contains liquid, and the top and bottom of the tank are respectively provided with a first opening and a second opening, and the switching valve assembly is sealed and installed at the second opening at the bottom of the tank;

[0007] The cylinder assembly includes a cylinder shell and a straight pipe section connected in sequence. The straight pipe section is located at the bottom of the cylinder shell. The straight pipe section of the cylinder assembly extends into the interior of the tank from a first opening at the top of the tank. The bottom of the straight pipe section has an opening. The interior of the straight pipe section has a working chamber that cooperates with the piston assembly. The working chamber is connected to the opening at the bottom of the straight pipe section.

[0008] The piston assembly is installed inside the cylinder assembly. The piston assembly includes a piston lifting mechanism and a piston component. The piston lifting mechanism is used to drive the piston component to move up and down within the power chamber.

[0009] The bottom surface of the straight pipe section has a downward-facing annular protrusion, and the top surface of the switching valve assembly is provided with an annular sealing ring that matches the annular protrusion.

[0010] When the cylinder lifting mechanism is activated, it drives the cylinder assembly and the piston assembly located in the cylinder assembly to move up and down relative to the tank.

[0011] When in the draining state, the annular protrusion at the bottom of the straight pipe section seals against the annular sealing ring, and the piston lifting mechanism drives the piston to press down the liquid below the piston, so that the switching valve assembly opens under the action of water pressure.

[0012] According to one embodiment of the present invention, the piston lifting mechanism includes a screw jack, the motor of the screw jack is installed inside the cylinder housing, the screw of the screw jack extends into the straight pipe section, and the piston is installed at the bottom of the screw.

[0013] According to one embodiment of the present invention, the switching valve assembly includes a valve body structure, a valve core, at least one spring, and a cover;

[0014] The valve body structure has a valve cavity inside, which includes a frustum cavity and a cylindrical cavity connected in sequence. The frustum cavity is higher than the cylindrical cavity and is connected to the external environment. The diameter of the frustum cavity gradually increases from the top to the bottom of the valve body structure. The inner bottom wall of the valve cavity is provided with a spray hole that is connected to the external environment.

[0015] The valve core includes a frustum and a cylinder connected to each other, the frustum being higher than the cylinder, the frustum matching the frustum cavity, and the spring being disposed between the bottom of the cylinder and the bottom of the valve cavity;

[0016] The cap is detachably installed at the bottom of the valve body structure to seal the spray hole.

[0017] According to one embodiment of the present invention, the valve body structure includes a valve body and a valve core fixing seat, the valve cavity is formed in the valve body, the bottom of the valve body is provided with a bottom opening communicating with the valve cavity, the valve core fixing seat is disposed between the bottom of the valve body and the cover, and the cover and the valve core fixing seat are fixed together to the bottom of the valve body by fixing bolts;

[0018] The valve core fixing seat includes a vertically arranged column that extends into the valve cavity, and a guide hole is provided on the column. The liquid spraying hole is provided on the valve core fixing seat.

[0019] The valve core also includes a bottom rod located at the bottom of the cylinder, the lower end of which is inserted into the guide hole of the column, and the spring is located between the cylinder and the column.

[0020] According to one embodiment of the present invention, the straight pipe section includes an upper straight pipe and a lower straight pipe connected in sequence, the upper straight pipe being higher than the lower straight pipe, and the diameter of the upper straight pipe being smaller than the diameter of the lower straight pipe;

[0021] The upper straight pipe extends from the first opening at the top of the tank into the interior of the tank.

[0022] According to one embodiment of the present invention, the lower straight pipe includes a first pipe section and a second pipe section connected by a flange, the first pipe section being higher than the second pipe section, the annular protrusion being provided on the bottom surface of the second pipe section, a sealing gasket being provided at the connection between the first pipe section and the second pipe section, and the lead screw passing through the sealing gasket.

[0023] According to one embodiment of the present invention, an exhaust port is provided on the side wall of the first pipe section, and a connecting port is provided on the top of the tank body, and the exhaust port and the connecting port are connected by a flexible hose.

[0024] According to one embodiment of the present invention, at least one guide rod is installed at the bottom of the tank, and an annular plate is provided on the bottom circumferential surface of the second pipe section, the annular plate passing through the guide rod.

[0025] According to one embodiment of the present invention, a top cover is detachably installed on the top of the tank, and the top cover is provided with a feed inlet.

[0026] According to one embodiment of the present invention, the cylinder lifting mechanism is located above the cylinder assembly and includes a motor, a reducer, a rope reel, and a rope; the output end of the motor is connected to the input end of the reducer, the output end of the reducer is connected to the rope reel, the rope is wound on the rope reel, and one end of the rope is connected to the cylinder housing.

[0027] The beneficial effects of this invention are:

[0028] First, because the straight pipe section at the bottom of the cylinder assembly is straight, the piston moves straight up and down within the straight pipe section. The path is simple during liquid suction and discharge, and there are no dead corners for stagnation, so the suspension will not stagnate within the cylinder assembly.

[0029] Secondly, during drainage, the gap between the inclined surface of the truncated cone of the valve core and the inclined surface of the truncated cavity of the valve body is wide enough so that the suspension and particulate matter can pass smoothly through the gap and enter the valve cavity without causing blockage.

[0030] Third, the number of spray holes on the valve core base is sufficient and the width is large enough so that the suspension and particles can pass smoothly through the outlet of the switching valve assembly without clogging.

[0031] Fourth, the entire switching valve assembly differs from traditional ball valves or cone valves. Its internal flow channel is relatively wide, and the flow path is simple and direct, which can greatly avoid clogging problems.

[0032] Fifth, the working chamber inside the straight pipe section of the cylinder block assembly and the flow channel inside the switching valve assembly have virtually no bends, and the flow channels are relatively wide, with virtually no bottlenecks that could easily lead to particle deposition or jamming.

[0033] Sixth, the structure of this suspension conveying system is relatively simple, and maintenance is simple. Daily maintenance only requires periodic inspection of the seals and timely replacement of easily worn parts.

[0034] In summary, this suspension conveying system is less prone to clogging when conveying mixed suspensions of solvent, particles, and water, and it has a simple structure and is easy to maintain. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 A schematic diagram provided for an embodiment of the present invention;

[0037] Figure 2 A cross-sectional view of the cylinder block assembly provided in an embodiment of the present invention;

[0038] Figure 3 A cross-sectional view of the cylinder housing, upper straight pipe, and first pipe section provided in an embodiment of the present invention;

[0039] Figure 4 A cross-sectional view of the second pipe section provided in an embodiment of the present invention;

[0040] Figure 5 This is a structural diagram of the lead screw and piston components provided in an embodiment of the present invention;

[0041] Figure 6 Provided for embodiments of the present invention Figure 1 Enlarged view of section A;

[0042] Figure 7 A cross-sectional view of a switching valve assembly provided in an embodiment of the present invention;

[0043] Figure 8 A cross-sectional view of the valve core provided in an embodiment of the present invention;

[0044] Figure 9This is a top view of the valve core fixing seat provided in an embodiment of the present invention;

[0045] Figure 10 Provided for embodiments of the present invention Figure 9 Sectional view of CC;

[0046] Figure 11 This is a first state diagram of the liquid aspiration process of the suspension delivery system provided in an embodiment of the present invention;

[0047] Figure 12 This is a second state diagram of the liquid aspiration process of the suspension delivery system provided in an embodiment of the present invention;

[0048] Figure 13 This is a first state diagram of the discharge process of the suspension conveying system provided in an embodiment of the present invention;

[0049] Figure 14 This is a second state diagram of the liquid discharge process of the suspension delivery system provided in an embodiment of the present invention.

[0050] Icons: 1. Motor; 2. Reducer; 3. Coupling; 4. Rope reel; 5. Bearing housing; 6. First guide pulley; 7. Second guide pulley; 8. Rope; 9. Cylinder assembly; 901. Cylinder housing; 902. Upper straight pipe; 903. Lower straight pipe; 904. First pipe section; 905. Second pipe section; 906. Lifting ring; 907. Working chamber; 908. Exhaust port; 909. Sealing ring mounting groove; 910. Upper ring plate; 911. Lower ring plate; 912. Annular protrusion; 10. Screw jack; 11. Screw; 12. Tank; 121. Feed inlet; 122. Fixed seat; 13. Switch valve assembly; 131. Valve body; 132. Valve core; 1321. Frustum; 1322. Cylinder; 1323. Groove; 1324. Upper section of bottom rod; 1325. Lower section of bottom rod; 133. Spring; 134. Valve core fixing seat; 1341. Disc; 1342. Column; 1343. Guide hole; 1344. Mounting hole; 1345. Spray hole; 135. Cover; 136. Fixing bolt; 137. Insertion hole; 14. Piston; 15. Wear-resistant sealing ring; 16. Locking bolt; 17. First sealing ring; 18. Second sealing ring; 19. Guide rod; 20. Hose; 21. Sealing gasket; 22. Slide rail. Detailed Implementation

[0051] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] likeFigures 1-14 As shown, one embodiment of the present invention provides a suspension conveying system, including a cylinder lifting mechanism, a cylinder assembly 9, a piston assembly, a tank 12, and a switch valve assembly 13; the tank 12 contains liquid, and the top and bottom of the tank 12 are respectively provided with a first opening and a second opening, and the switch valve assembly 13 is sealed and installed at the second opening at the bottom of the tank 12.

[0053] The cylinder assembly 9 includes a cylinder housing 901 and a straight pipe section connected in sequence. The straight pipe section is located at the bottom of the cylinder housing 901. The straight pipe section of the cylinder assembly 9 extends into the tank 12 from the first opening at the top of the tank 12. The bottom of the straight pipe section has an opening. The inside of the straight pipe section has a working chamber 907 that cooperates with the piston assembly. The working chamber 907 is connected to the opening at the bottom of the straight pipe section.

[0054] The piston assembly is installed inside the cylinder assembly 9. The piston assembly includes a piston lifting mechanism and a piston component 14. The piston lifting mechanism is used to drive the piston component 14 to move up and down in the power chamber 907.

[0055] The bottom surface of the straight pipe section has an annular protrusion 912 that protrudes downwards, and the top surface of the switch valve assembly 13 is provided with an annular sealing ring that matches the annular protrusion 912.

[0056] When the cylinder lifting mechanism is activated, it drives the cylinder assembly 9 and the piston assembly located in the cylinder assembly 9 to move up and down relative to the tank 12.

[0057] When in the draining state, the annular protrusion 912 at the bottom of the straight pipe section seals against the annular sealing ring, and the piston lifting mechanism drives the piston 14 to press down the liquid below the piston 14, so that the switching valve assembly 13 opens under the action of water pressure.

[0058] It should be noted that the top of the tank 12 is equipped with a feed inlet 121 through which the suspension can be added into the tank 12. A dust cover is detachably installed on the top of the feed inlet 121, and the dust cover has holes to ensure that the air pressure inside and outside the tank 12 is consistent. Furthermore, when injecting the suspension into the tank 12, care should be taken not to fill the entire tank 12; at least some air should be left in the area near the top of the tank 12.

[0059] When using this suspension conveying system to convey suspension, it is roughly divided into a discharge process and a suction process. The discharge process is as follows: the cylinder lifting mechanism pulls the cylinder assembly 9 and the piston assembly to rise to a set height together. At this time, there is a certain height difference between the bottom of the straight pipe section of the cylinder assembly 9 and the inner bottom wall of the tank 12. Moreover, the piston 14 is higher than the bottom surface of the straight pipe section. In this way, the suspension inside the tank 12 naturally enters the working chamber 907 and the space below the piston 14.

[0060] Next, the cylinder lifting mechanism drives the cylinder assembly 9 and the piston assembly to move down to a set height together, so that the annular protrusion 912 at the bottom of the straight pipe section of the cylinder assembly 9 presses tightly against the annular sealing ring on the top surface of the switch valve assembly 13. Then, the piston lifting mechanism drives the piston 14 to move downward in the working chamber 907. Under the action of water pressure, the switch valve assembly 13 opens, and the suspension in the space below the piston 14 is squeezed into the switch valve assembly 13 and finally sprayed out from the switch valve assembly 13.

[0061] The liquid suction process is as follows: After the liquid is drained, the cylinder lifting mechanism pulls the cylinder assembly 9 and the piston assembly to rise to a set height together. Then, the piston lifting mechanism drives the piston 14 to move upward in the working chamber 907, thereby sucking the suspension in the tank 12 into the working chamber 907.

[0062] In this embodiment, there are various options for the specific structure of the piston lifting mechanism, such as using a hydraulic cylinder or a pneumatic cylinder, or using a screw jack 10 or other screw jacks.

[0063] As a specific embodiment, the piston lifting mechanism is a worm gear screw jack, such as... Figure 1 As shown, the motor of the screw jack 10 is fixedly installed inside the cylinder housing 901. The screw 11 of the screw jack 10 extends into the straight pipe section, and the piston 14 is installed at the bottom of the screw 11, with the piston 14 sealingly engaged with the working chamber 907 of the straight pipe section. The motor of the screw jack 10 is a servo motor, which precisely controls the lifting height of the screw 11, thereby achieving precise control over the cylinder's liquid intake and discharge accuracy.

[0064] In this embodiment, as Figure 2 As shown, the straight pipe section includes an upper straight pipe 902 and a lower straight pipe 903 connected in sequence. The top opening of the upper straight pipe 902 is sealed and installed at the bottom second opening of the cylinder housing 901. To reduce the machining difficulty of the cylinder itself and facilitate the installation and maintenance of the piston 14, the lower straight pipe 903 is divided into two sections, which are named the first pipe section 904 and the second pipe section 905 for ease of description. The top opening of the first pipe section 904 is connected to the bottom opening of the upper straight pipe 902, and the top of the second pipe section 905 is sealed and connected to the bottom of the first pipe section 904 by a flange. The first pipe section 904 and the second pipe section 905 have the same diameter, while the diameter of the upper straight pipe 902 is smaller than the diameter of the first pipe section 904. The aforementioned annular protrusion 912 is provided on the bottom end face of the second pipe section 905. When it is necessary to maintain the piston 14, the second pipe section 905 can be removed to expose the piston 14 inside the straight pipe section, thus facilitating the maintenance of the piston 14.

[0065] It should be noted that the diameter of the first opening at the top of the tank 12 is slightly larger than the diameter of the upper straight pipe 902. The entire lower straight pipe 903 is located inside the tank 12, and the bottom of the upper straight pipe 902 passes through the first opening at the top of the tank 12 and enters the interior of the tank 12.

[0066] In this embodiment, the inner diameter of the upper straight tube 902 is slightly larger than the outer diameter of the lead screw 11. The lead screw 11 of the aforementioned lead screw jack 10 passes through the first section 904 of the upper straight tube 902 and the lower straight tube 903 in sequence and extends into the second section 905. The piston 14 located at the bottom of the lead screw 11 moves up and down in the second section 905.

[0067] In some embodiments, such as Figure 4 As shown, the cross-section of the annular protrusion 912 is arc-shaped. It should be noted that, due to the presence of the annular protrusion 912 and the annular sealing ring, the bottom surface of the second pipe section 905 will not directly act on the top surface of the switch valve assembly 13 during drainage. Therefore, while ensuring the seal between the cylinder body and the bottom of the tank 12, it also ensures that when the cylinder assembly 9 is lifted, there will be no situation where the bottom surface of the second pipe section 905 and the top surface of the switch valve assembly 13 cannot be separated due to the liquid film formed when they are stuck together.

[0068] In this embodiment, as Figure 1 and Figure 11 As shown, a gasket 21 is installed at the flange connection between the first pipe section 904 and the second pipe section 905, and the threaded rod 11 passes through the gasket 21. More specifically, as... Figure 3 As shown, a flange is provided on the bottom circumference of the first pipe section 904, and an upper ring plate 910 is provided on the top circumference of the second pipe section 905. A sealing gasket 21 is provided between the flange and the upper ring plate 910, and the flange and the upper ring plate 910 are fixed together by locking bolts 16.

[0069] In some embodiments, to ensure that the piston 14 does not fail to reach the predetermined position due to the pressure generated by the compression of air in the upper space of the piston 14 during its upward movement, such as... Figure 1 As shown, an exhaust port 908 is provided on the side wall of the first pipe section 904, and a first connection port and a second connection port are provided on the top of the tank body 12. A hose 20 is sealed and installed at the exhaust port 908 on the side wall of the first pipe section 904. One end of the hose 20 passes through the first connection port on the top of the tank body 12 and is sealed and connected to the second connection port on the top of the tank body 12.

[0070] By using hose 20, the air pressure inside the working chamber 907 can be made the same as the air pressure inside the tank 12, so that equipment failure or malfunction will not be caused by pressure difference.

[0071] It should be noted that the liquid level of the suspension inside the tank 12 is always lower than the vent 908 on the side wall of the first pipe section 904, while the area above the suspension is filled with air.

[0072] In some embodiments, such as Figure 3 As shown, a sealing ring mounting groove 909 is provided on the inner wall of the upper straight pipe 902, such as... Figure 6 As shown, a first sealing ring 17 is installed in the sealing ring mounting groove 909. The first sealing ring 17 is sealed and engaged with the lead screw 11, thus isolating the inside of the cylinder housing 901 and the straight pipe section, and preventing unstable air pressure inside the cylinder housing 901.

[0073] In some embodiments, such as Figure 5 As shown, the piston component 14 includes a piston movable block, which is fixedly connected to the bottom end of the lead screw 11. Multiple annular mounting grooves are provided on the circumferential surface of the piston movable block, and a wear-resistant sealing ring 15 is installed in each annular mounting groove. Preferably, the wear-resistant sealing ring 15 is made of polytetrafluoroethylene (PTFE).

[0074] In some embodiments, such as Figure 6 As shown, an annular mounting base 122 is fixedly installed at the first opening on the top of the tank 12. A second sealing ring 18 is installed inside the annular mounting base 122, and the second sealing ring 18 is in sealing engagement with the upper straight pipe 902. The second sealing ring 18 is mainly used for dust prevention, preventing external dust from entering the tank 12 through the gap between the upper straight pipe 902 and the first opening on the top of the tank 12.

[0075] In this embodiment, as Figure 7 and Figure 8 As shown, the switching valve assembly 13 includes a valve body structure, a valve core 132, at least one spring 133, and a cover 135. The valve body structure contains a valve cavity, which includes a frustum-shaped cavity and a cylindrical cavity connected in sequence. The frustum-shaped cavity is higher than the cylindrical cavity and communicates with the external environment. The diameter of the frustum-shaped cavity gradually increases from the top to the bottom of the valve body structure. A spray hole 1345 communicating with the external environment is provided on the inner bottom wall of the valve cavity.

[0076] Furthermore, such as Figure 8 As shown, the valve core 132 includes a frustum 1321 and a cylinder 1322 connected to each other. The frustum 1321 is higher than the cylinder 1322. The frustum 1321 matches the frustum cavity. The spring 133 is located between the bottom of the cylinder 1322 and the bottom of the valve cavity. The cover 135 is detachably installed at the bottom of the valve body structure to block the spray hole 1345.

[0077] Thus, after the annular protrusion 912 at the bottom of the straight pipe section of the cylinder assembly 9 presses tightly against the annular sealing ring on the top surface of the switching valve assembly 13, the screw jack 10 drives the screw 11 to move the piston 14 downward in the second pipe section 905. Under the action of water pressure, the valve core 132 is forced to move downward and gradually separate from the frustum cavity of the valve body structure. At this time, the spring 133 is in a compressed state. At this time, the suspension flows into the valve cavity from the gap between the inclined surface of the frustum 1321 and the inclined surface of the frustum cavity of the valve body 131, and finally sprays out from the spray hole 1345 at the bottom of the valve body structure, realizing the discharge of the suspension. In this embodiment, as Figure 13 As shown, after the valve core 132 moves down to the set position, the gap between the inclined surface of the frustum 1321 and the inclined surface of the frustum cavity of the valve body 131 is wide enough to ensure that particles and suspensions can flow smoothly into the valve cavity from the gap without causing blockage.

[0078] As a preferred embodiment, such as Figure 7 As shown, the valve body structure includes a valve body 131 and a valve core fixing seat 134. A valve cavity is formed within the valve body 131. The bottom of the valve body 131 has a bottom opening communicating with the valve cavity. The valve core fixing seat 134 is as follows... Figure 9 and Figure 10 As shown, it includes an integrally formed disc 1341 and a column 1342. The column 1342 is located at the center of the disc 1341, and the top of the column 1342 is higher than the disc 1341. A guide hole 1343 is provided on the column 1342, and the aforementioned spray hole 1345 is provided on the disc 1341. The valve core fixing seat 134 is fixedly installed at the bottom of the valve body 131, and the column 1342 of the valve core fixing seat 134 extends into the valve cavity.

[0079] Furthermore, the valve core 132 also includes a bottom rod integrally formed at the bottom of the cylinder 1322. The bottom rod consists of a coaxial and integrally formed upper section 1324 and a lower section 1325. The diameter of the upper section 1324 is larger than the diameter of the lower section 1325. The aforementioned guide hole 1343 matches the lower section 1325.

[0080] Furthermore, the spring 133 is disposed between the cylinder 1322 of the valve core 132 and the column 1342 of the valve core fixing seat 134.

[0081] It is worth mentioning that when the switch valve is closed, the top surface of the valve core 132 is flush with the top surface of the valve body 131, and under the action of the spring force, the side of the frustum 1321 of the valve core 132 is completely attached to the inner wall of the frustum cavity of the valve body 131, ensuring that the liquid is sealed and leak-free.

[0082] When the switching valve is forced open under hydraulic pressure, the spring 133 is compressed, the top surface of the valve core 132 is lower than the top surface of the valve body 131, and the side of the frustum 1321 of the valve core 132 is completely separated from the inner wall of the frustum cavity of the valve body 131, thereby creating a channel for the discharge of the suspension. Due to the presence of the frustum 1321 of the valve core 132, the valve core 132 can open the liquid flow channel more quickly when subjected to downward liquid thrust, thus improving the discharge efficiency.

[0083] In order to improve the sealing effect between the valve core 132 and the valve body 131, as a specific embodiment, the frustum 1321 of the valve core 132 is made of rubber material, while the cylinder 1322 of the valve core 132 can be made of rubber material or metal material, and the bottom rod of the valve core 132 must be made of metal rod.

[0084] As an alternative embodiment, the valve core 132 can be integrally manufactured from a metal material.

[0085] In this embodiment, as Figure 9 As shown, multiple spray holes 1345 are provided, and these spray holes 1345 are evenly arranged around the axis of the disc 1341. The spray holes 1345 are arc-shaped holes, and their width is sufficient for the suspension and particles to pass through. Because there are enough spray holes 1345 and their width is large enough, the suspension and particles will not cause blockage at the outlet of the switching valve assembly 13.

[0086] It should be noted that in this embodiment, the function of the guide hole 1343 is to guide the valve core 132. Specifically, since the lower end of the bottom rod of the valve core 132 extends into the guide hole 1343, the valve core 132 can only move up and down along the guide hole 1343, thereby ensuring the stability of the valve core 132 when it moves up and down.

[0087] In addition, it should be noted that the valve body structure is set up in two parts: valve body 131 and valve core fixing seat 134, which facilitates the replacement of the spring 133 inside the valve cavity.

[0088] In some embodiments, such as Figure 8 As shown, an annular groove 1323 is formed on the bottom surface of the cylinder 1322, such as... Figure 10 As shown, a stepped surface is provided on the column 1342 of the valve core fixing seat 134. Figure 7 As shown, the top of the spring 133 is fixedly connected to the groove 1323 at the bottom of the cylinder 1322, and its bottom end is sleeved on the top of the column 1342 and fixed to the step surface. This serves to retain the spring 133.

[0089] In this embodiment, as Figure 9 As shown, multiple mounting holes 1344 are provided at the edge of the disc 1341 of the valve core fixing seat 134, such as...Figure 10 As shown, corresponding holes are provided at the edge of the cover 135, each corresponding to the mounting hole 1344. Multiple threaded holes corresponding to the mounting holes 1344 are also provided at the bottom edge of the valve body 131. Thus, the cover 135 and the valve core fixing seat 134 can be assembled together to the bottom of the valve body 131 using the fixing bolts 136.

[0090] To improve the sealing effect between the valve body 131, the valve core fixing seat 134, and the cover 135, such as Figure 7 As shown, a sealing ring is provided between the bottom surface of the valve body 131 and the valve core fixing seat 134, and a sealing ring is also provided between the cover 135 and the bottom surface of the valve core fixing seat 134.

[0091] In this embodiment, as Figure 1 As shown, multiple guide rods 19 are installed on the inner bottom wall of the tank 12 around the second opening of the tank 12, with the bottom ends of the guide rods 19 extending out of the tank 12. Figure 4 As shown, the bottom circumference of the second pipe section 905 is provided with a lower ring plate 911, and the lower ring plate 911 has multiple round holes for the guide rod 19 to pass through. Figure 7 As shown, the top of the valve body 131 is provided with multiple insertion holes 137 corresponding one-to-one with the guide rod 19. Figure 12 As shown, the valve body 131 is fixedly installed on the bottom surface of the tank body 12, and the bottom end of the guide rod 19 is inserted into the insertion hole 137 at the top of the valve body 131. At the same time, the guide rod 19 passes through the round hole in the lower ring plate 911 of the second pipe section 905.

[0092] The purpose of setting the guide rod 19 is mainly twofold. First, it guides the lifting and lowering of the cylinder assembly 9, enabling the cylinder assembly 9 to rise and fall stably in conjunction with the aforementioned slide rail mechanism. Second, the guide rod 19 serves a positioning function, allowing the switching valve assembly 13 to be precisely positioned and installed.

[0093] In this embodiment, no specific restrictions are placed on the cylinder lifting mechanism, as long as it can drive the cylinder assembly 9 to rise and fall. For example, the cylinder lifting mechanism can be a winch, a chain and sprocket lifting mechanism, a ball screw module lifting mechanism, etc.

[0094] To ensure the stability of the cylinder assembly 9 during lifting and lowering, a slide rail mechanism is specially designed, such as... Figure 1 As shown, the slide rail mechanism includes two vertically arranged and parallel slide rails 22, with a slider slidably mounted on each slide rail 22. The cylinder housing 901 is fixedly mounted on the sliders on the two slide rails 22. It should be noted that since the cylinder assembly 9 is mounted on the slide rail mechanism, the cylinder assembly 9 can only move up and down vertically on the slide rail mechanism.

[0095] As a specific embodiment, such as Figure 1As shown, the cylinder lifting mechanism is located above the cylinder assembly 9, and includes a motor 1, a rotating shaft, a reducer 2, a rope reel 4, a rope 8, multiple bearing seats 5, a first guide pulley 6, and a second guide pulley 7. The rotating shaft is rotatably mounted between the multiple bearing seats 5, which support the rotating shaft. The output end of the reducer 2 is connected to one end of the rotating shaft via a coupling 3. The output end of the motor 1 is connected to the input end of the reducer 2. The rope reel 4 is mounted on the rotating shaft, and the rope 8 is wound around it. The first guide pulley 6 and the second guide pulley 7 are arranged horizontally, with the first guide pulley 6 located below the rope reel 4 and the second guide pulley 7 located above the cylinder housing 901. The rope 8 passes sequentially through the first guide pulley 6 and the second guide pulley 7 before connecting to a lifting ring 906 on the cylinder housing 901. That is, the rotating shaft is driven by the motor 1 to rotate, and the rotating shaft drives the rope reel 4 to rotate together, thereby winding or unwinding the rope 8. As the rope 8 is wound or unwinded, the cylinder assembly 9 moves up and down.

[0096] In this embodiment, the process of using this suspension conveying system to convey suspension is roughly divided into two processes: liquid absorption and liquid discharge. The specific process is described in detail below in two steps.

[0097] Liquid aspiration process:

[0098] Motor 1 starts, driving rope reel 4 to rotate and wind up rope 8. As rope 8 winds up, cylinder assembly 9 rises until the bottom surface of the second pipe section 905 of cylinder assembly 9 reaches the set height difference with the inner bottom wall of tank 12. At this point, motor 1 stops working. Figure 11 As shown, the bottom surface of piston 14 is flush with the bottom surface of the second pipe section 905;

[0099] Next, the screw jack 10 is started to drive the screw 11 to rise, thereby driving the piston 14 to rise to the set height, as shown. Figure 12 As shown, due to the pressure difference between the inside and outside of the space below the piston 14, the liquid in the tank 12 is instantly forced into the second pipe section 905, the suspension is successfully drawn in and filled, and there is no gas residue.

[0100] It should be noted that during the process of piston 14 rising, since the internal cavity of the first pipe section 904 is connected to the air inside the tank 12 through the hose 20, the instantaneous pressure generated by piston 14 on the air in the upper cavity of the cylinder is discharged into the tank 12 and then discharged into the atmosphere through the feed port 121. Therefore, the pressure generated during the movement cannot have any impact on the equipment itself.

[0101] Optionally, the tank body 12 is an open type, with a top cover covering the open top. A sealing gasket is provided between the top cover and the top surface of the tank body 12 to reduce vibration and eliminate abnormal noise. The aforementioned feed inlet 121 is located on the top cover.

[0102] Drainage process:

[0103] After the liquid aspiration is completed, motor 1 restarts, driving rope reel 4 to rotate and loosen rope 8. As rope 8 loosens, cylinder assembly 9 descends. Under gravity, the annular protrusion 912 at the bottom of the second pipe section 905 of cylinder assembly 9 seals against the annular sealing ring at the bottom of tank 12, thus achieving the desired effect. Figure 13 The state shown;

[0104] Next, the screw jack 10 is activated to lower the screw 11, thereby lowering the piston 14 to a set height until the piston 14 contacts the top surface of the valve assembly 13. Under water pressure, the valve core 132 in the valve assembly 13 is forced to move downward, and the spring 133 is compressed. At this time, the gap between the inclined surface of the frustum 1321 of the valve core 132 and the inclined surface of the frustum cavity of the valve body 131 is gradually opened to a preset width. The suspension flows into the valve cavity from the gap between the inclined surface of the frustum 1321 and the inclined surface of the frustum cavity of the valve body 131, and finally sprays out from the spray hole 1345 on the valve core fixing seat 134, thus achieving the desired effect. Figure 14 The state shown.

[0105] Then repeat the above aspiration and drainage process according to the execution procedure.

[0106] It should be noted that in this application, during liquid aspiration, the servo motor of the screw jack 10 controls the height to which the screw 11 drives the piston 14 to rise, thereby controlling the distance from the bottom surface of the piston 14 to the bottom surface of the second pipe section 905. In other words, the amount of suspension aspirated can be controlled, which also means the amount of suspension discharged in a single operation can be controlled. By cyclically operating the liquid aspiration and discharge logic, the set discharge volume can be achieved.

[0107] Because the straight pipe section at the bottom of the cylinder assembly 9 is straight, the piston 14 moves vertically within the straight pipe section. This simplifies the liquid intake and discharge process, eliminating dead zones and preventing the suspension from accumulating within the cylinder assembly 9. Furthermore, during discharge, the gap between the inclined surface of the frustum 1321 of the valve core 132 and the inclined surface of the frustum cavity of the valve body 131 is sufficiently wide, allowing the suspension and particles to pass smoothly into the valve cavity without clogging. Additionally, the sufficient number and width of the spray holes 1345 ensure that the suspension and particles can pass smoothly through the outlet of the switching valve assembly 13 without clogging. Finally, unlike traditional ball valves or cone valves, the entire switching valve assembly 13 has a relatively wide internal flow channel and a simple, direct flow path, greatly reducing the risk of clogging.

[0108] It is worth mentioning that the working chamber 907 inside the straight pipe section of the cylinder block assembly 9 and the flow channel inside the switching valve assembly 13 have basically no corners, and the flow channel is relatively wide, with basically no bottlenecks that can easily lead to particle deposition or jamming.

[0109] Moreover, the structure of this suspension conveying system is relatively simple, and maintenance is simple. Daily maintenance only requires periodic inspection of the seals and timely replacement of easily worn parts.

[0110] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0111] 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, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A suspension delivery system, characterized in that, It includes a cylinder lifting mechanism, a cylinder assembly (9), a piston assembly, a tank (12), and a switch valve assembly (13); the tank (12) contains liquid, and the top and bottom of the tank (12) are respectively provided with a first opening and a second opening, and the switch valve assembly (13) is sealed and installed at the second opening at the bottom of the tank (12); The cylinder assembly (9) includes a cylinder shell (901) and a straight pipe section connected in sequence. The straight pipe section is located at the bottom of the cylinder shell (901). The straight pipe section of the cylinder assembly (9) extends into the interior of the tank (12) from the first opening at the top of the tank (12). The bottom of the straight pipe section has an opening. The interior of the straight pipe section has a working chamber (907) that cooperates with the piston assembly. The working chamber (907) is connected to the opening at the bottom of the straight pipe section. The piston assembly is installed inside the cylinder assembly (9). The piston assembly includes a piston lifting mechanism and a piston component (14). The piston lifting mechanism is used to drive the piston component (14) to move up and down in the working chamber (907). The bottom surface of the straight pipe section has an annular protrusion (912) that protrudes downwards, and the top surface of the switch valve assembly (13) is provided with an annular sealing ring that matches the annular protrusion (912). When the cylinder lifting mechanism is activated, it drives the cylinder assembly (9) and the piston assembly located in the cylinder assembly (9) to move up and down relative to the tank (12); When in the draining state, the annular protrusion (912) at the bottom of the straight pipe section is sealed to the annular sealing ring, and the piston lifting mechanism drives the piston (14) to press down the liquid below the piston (14), so that the switch valve assembly (13) is opened under the action of water pressure.

2. The suspension conveying system according to claim 1, characterized in that, The piston lifting mechanism includes a screw jack (10), the motor of which is installed inside the cylinder housing (901), the screw (11) of which extends into the straight pipe section, and the piston component (14) installed at the bottom of the screw (11).

3. The suspension conveying system according to claim 2, characterized in that, The switching valve assembly (13) includes a valve body structure, a valve core (132), at least one spring (133), and a cover (135); The valve body structure has a valve cavity inside, which includes a frustum cavity and a cylindrical cavity connected in sequence. The frustum cavity is higher than the cylindrical cavity and is connected to the external environment. The diameter of the frustum cavity gradually increases from the top to the bottom of the valve body structure. The inner bottom wall of the valve cavity is provided with a spray hole (1345) that is connected to the external environment. The valve core (132) includes a frustum (1321) and a cylinder (1322) connected to each other. The frustum (1321) is higher than the cylinder (1322). The frustum (1321) matches the frustum cavity. The spring (133) is located between the bottom of the cylinder (1322) and the bottom of the valve cavity. The cap (135) is detachably installed at the bottom of the valve body structure to seal the spray hole (1345).

4. The suspension conveying system according to claim 3, characterized in that, The valve body structure includes a valve body (131) and a valve core fixing seat (134). The valve cavity is formed inside the valve body (131). The bottom of the valve body (131) is provided with a bottom opening that communicates with the valve cavity. The valve core fixing seat (134) is disposed between the bottom of the valve body (131) and the cover (135). The cover (135) and the valve core fixing seat (134) are fixed together to the bottom of the valve body (131) by fixing bolts (136). The valve core fixing seat (134) includes a vertically arranged column (1342), the column (1342) extends into the valve cavity, and a guide hole (1343) is provided on the column (1342), and the liquid injection hole (1345) is provided on the valve core fixing seat (134). The valve core (132) also includes a bottom rod located at the bottom of the cylinder (1322), the lower end of which is inserted into the guide hole (1343) of the column (1342), and the spring (133) is located between the cylinder (1322) and the column (1342).

5. A suspension conveying system according to claim 2, characterized in that, The straight pipe section includes an upper straight pipe (902) and a lower straight pipe (903) connected in sequence. The upper straight pipe (902) is higher than the lower straight pipe (903), and the diameter of the upper straight pipe (902) is smaller than the diameter of the lower straight pipe (903). The upper straight pipe (902) extends from the first opening at the top of the tank (12) into the interior of the tank (12).

6. A suspension conveying system according to claim 5, characterized in that, The lower straight pipe (903) includes a first pipe section (904) and a second pipe section (905) connected by a flange. The first pipe section (904) is higher than the second pipe section (905). The annular protrusion (912) is provided on the bottom surface of the second pipe section (905). A sealing gasket (21) is provided at the connection between the first pipe section (904) and the second pipe section (905). The lead screw (11) passes through the sealing gasket (21).

7. A suspension conveying system according to claim 6, characterized in that, An exhaust port (908) is provided on the side wall of the first pipe section (904), and a connecting port is provided on the top of the tank (12). The exhaust port (908) and the connecting port are connected by a hose (20).

8. A suspension conveying system according to claim 6, characterized in that, At least one guide rod (19) is installed at the bottom of the tank (12), and an annular plate is provided on the bottom circumferential surface of the second pipe section (905), the annular plate passing through the guide rod (19).

9. A suspension conveying system according to claim 1, characterized in that, The top of the tank (12) is detachably fitted with a top cover, and the top cover is provided with a feed inlet (121).

10. A suspension conveying system according to claim 1, characterized in that, The cylinder lifting mechanism is located above the cylinder assembly (9) and includes a motor (1), a reducer (2), a rope reel (4), and a rope (8). The output end of the motor (1) is connected to the input end of the reducer (2), the output end of the reducer (2) is connected to the rope reel (4), the rope (8) is wound around the rope reel (4), and one end of the rope (8) is connected to the cylinder housing (901).

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