Pneumatic driven concrete grouting material pumping machine

Abstract

The invention provides a pneumatically-driven concrete grouting material pumping machine which comprises a stock bin barrel, the stock bin barrel is provided with a containing cavity for containing concrete slurry and a slurry outlet, the slurry outlet is located in the bottom of the stock bin barrel and communicates with the containing cavity, and the bottom face of the containing cavity is an inclined face; the end, away from the slurry outlet, of the containing cavity is an open end, and a first clamping part is arranged at the open end; the barrel cover covers the open end, a second clamping part is arranged on the barrel cover, and the first clamping part and the second clamping part are matched in a clamping mode so that the barrel cover can cover the open end in a sealing mode; the air pressure mechanism comprises an air source structure and a pressurizing opening communicating with the air source structure, the pressurizing opening is located in the barrel cover and communicates with the containing cavity, and a sealing cap is connected to the pressurizing opening in a sealed mode; and the liquid injection opening is formed in the barrel cover and communicates with the containing cavity, and a sealing cover is connected to the liquid injection opening in a sealed mode. The structure is simple, cleaning is convenient, the grout outlet is not prone to being blocked, and the air pressure mechanism facilitates smooth discharging of concrete grout.

Description

Technical Field

[0001] This invention generally relates to the field of bridge engineering construction technology, and specifically to a pneumatically driven concrete grouting material pump. Background Technology

[0002] In building, highway, and municipal engineering projects, small-scale, low-volume concrete grouting operations are frequently required. Examples include anchor bolt fixing, secondary grouting of equipment foundations, repair of localized cracks, and connection of precast bridge piers, beam segments, and abutments. Similarly, in materials laboratories, research institutions, and precast component (precast assembled bridge piers, segmental precast T-beams, etc.) researching new grouting materials or conducting quality testing or testing the strength of connection structures often necessitates simulated pumping tests on small batches of grout to evaluate key performance characteristics such as flowability, pressure bleeding rate, and filling properties. For these operations, especially research and experimental ones, using large concrete pump trucks is clearly uneconomical, impractical, and unsuitable for laboratory use. Traditional manual pouring or simple dumping methods suffer from low efficiency, high labor intensity, incomplete grout compaction, easy segregation, and an inability to accurately assess material properties under simulated actual pumping conditions.

[0003] Small manual or electric grouting equipment exists in related technologies, but they usually have the following drawbacks: complex structure, high cost, easy to clog, troublesome to clean, and a single sealing method for the grouting port. If not careful, it can easily lead to grout leakage and pressure loss. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a pneumatically driven concrete grout pump with a simple structure, and the lid and hopper can be detached for easy cleaning. The inclined surface at the bottom of the hopper facilitates the discharge of concrete grout, avoids sedimentation, and is not prone to clogging of the outlet. The pneumatic mechanism facilitates the adjustment of the pressure inside the hopper, so that the concrete grout can be smoothly discharged from the outlet under pressure. The presence of the injection port facilitates grout injection. Grouting can be performed by opening the lid or through the injection port according to the actual construction situation, making it convenient to use.

[0005] In a first aspect, the present invention provides a pneumatically driven concrete grout pump, comprising: The silo has a receiving cavity for containing concrete slurry and a slurry outlet. The slurry outlet is located at the bottom of the silo and communicates with the receiving cavity. The bottom surface of the receiving cavity is inclined. The end of the receiving cavity away from the slurry outlet is an open end, and a first locking part is provided on the open end. The bucket lid is located at the open end and has a second snap-fit ​​part. The first snap-fit ​​part and the second snap-fit ​​part are engaged to seal the bucket lid at the open end. The pneumatic mechanism includes an air source structure and a pressurization port connected to the air source structure. The pressurization port is located on the lid and is connected to the receiving cavity. A sealing cap is sealed to the pressurization port. The filling port is located on the lid and communicates with the receiving cavity. A sealing cap is connected to the filling port. The outer wall of the filling port is threaded. The sealing cap includes a main cap body, a compression spring, and a sealing ring. The main cap body has threads that mate with the filling port. The compression spring is installed inside the main cap body. One end of the compression spring is connected to the main cap body and the other end is connected to the sealing ring. When the main cap body is rotated to mate with the filling port, after the sealing ring contacts the sealing surface of the filling port, the main cap body is rotated, and the compression spring compresses the sealing ring to make tight sealing contact with the filling port. The slurry discharge mechanism includes a slurry discharge pipe, a fastening sleeve, and a valve. The slurry discharge port is provided with multiple rectangular threads, and the fastening sleeve is provided with the recessed part of the rectangular threads. The slurry discharge pipe is sealed to the slurry discharge port through the fastening sleeve, and the valve is installed at the slurry discharge port to control the opening and closing of the slurry discharge port.

[0006] As an optional solution, the cross-section of the open end and the lid is circular, and the first locking part includes at least two locking teeth disposed at the open end. The at least two locking teeth are evenly spaced along the circumferential distance of the open end, and each locking tooth extends outward from the edge of the open end. The second locking part includes at least two locking slots provided on the lid. The at least two locking slots are evenly spaced along the circumference of the lid, and each locking slot includes a protrusion extending outward from the edge of the lid and a recess formed on the protrusion. The recess is formed by recessing inward from one side of the protrusion. When the lid is rotated along a first direction, at least two locking teeth extend into the recess of each locking slot and engage with the recess. When the lid is rotated along a second direction, at least two locking teeth disengage from the recess of each locking slot. The first direction and the second direction are opposite.

[0007] As an alternative, the first locking part includes at least two locking platforms formed on the periphery of the open end, each locking platform protruding outward from the outer wall of the hopper. The second snap-fit ​​part includes at least two snaps provided on the bucket lid, the at least two snaps being correspondingly provided with at least two locking platforms, and each snap is movably connected to the bucket lid, with the snaps and locking platforms being detachably snap-fitted together.

[0008] As an optional solution, a safety port and a pressure relief valve are also provided on the lid. The safety port is connected to the receiving cavity, and the pressure relief valve is installed at the safety port.

[0009] As an optional solution, a first handle is also provided on the hopper barrel, and a second handle is provided on the barrel lid.

[0010] As an optional solution, the positions of the first handle and the second handle correspond to each other, with one of the first handle and the other having a locking position and the other having a latch, the latch and the locking position cooperating with each other.

[0011] As an optional solution, the outer wall of the pressure port is formed with a first threaded portion, and the sealing cap includes a cap body and a second threaded portion. An opening is formed through the cap body, and the opening includes a first section and a second section. The inner diameter of the first section is larger than the inner diameter of the second section, and the inner wall of the first section is formed with a second threaded portion. The first threaded portion and the second threaded portion are threadedly engaged, and the interior of the second section is filled with sealant.

[0012] As an optional solution, a sealing gasket is also provided on the hopper. When the first and second snap-fit ​​parts are engaged, the hopper lid and the sealing gasket are pressed tightly together.

[0013] As an optional solution, the pneumatically driven concrete grout pump also includes at least three wheels, which are set on the bottom of the hopper.

[0014] As an optional feature, a pressure gauge is also installed on the lid to detect the pressure inside the containment cavity.

[0015] As an optional solution, at least two lifting rings are also provided on the lid of the bucket for lifting and moving the hopper bucket.

[0016] The pneumatically driven concrete grout pump provided by this invention features an open-top structure for the hopper's receiving cavity, facilitating cleaning. A first locking part is provided at the open end of the receiving cavity, and a bucket lid is positioned at this end, with a second locking part also located on the lid. The first and second locking parts engage securely, ensuring a tight seal between the lid and the open end of the hopper, preventing pressure leakage. A pneumatic mechanism injects air into the receiving cavity, stabilizing the pressure and promoting stable discharge of the concrete grout, preventing blockages. Furthermore, the inclined bottom surface of the receiving cavity further facilitates the discharge of the concrete grout from the outlet under gravity, preventing sedimentation and blockages. The injection port is sealed on the lid, ensuring stable pressure within the receiving cavity and allowing for easy injection of concrete grout. Grout can be injected either by opening the lid or through the injection port, providing convenience and ensuring stable pressure within the receiving cavity. The grout discharge mechanism allows for easy and efficient discharge of grout as needed during construction. Attached Figure Description

[0017] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of a pneumatically driven concrete grouting material pump according to an embodiment of this application. Figure 2 A side view of a pneumatically driven concrete grout pump according to an embodiment of this application; Figure 3 This is a top view of the hopper of the pneumatically driven concrete grouting material pump according to an embodiment of this application. Figure 4 This is a schematic diagram of the structure of the bucket cover of the pneumatically driven concrete grouting pump according to an embodiment of this application. Figure 5 This is a structural diagram of the bucket lid and open end cover of the pneumatically driven concrete grout pump according to an embodiment of this application (before rotational assembly). Figure 6 This is a structural diagram of the bucket lid and open end cover of the pneumatically driven concrete grout pump according to an embodiment of this application (after rotational fitting). Figure 7 This is a schematic diagram of the bottom structure of the hopper of the pneumatically driven concrete grouting material pump according to an embodiment of this application. Figure 8 This is a schematic diagram of the bucket cover of a pneumatically driven concrete grout pump according to an embodiment of this application.

[0018] In the picture, 1. Material hopper, 11. Receiving cavity, 12. Inclined surface, A1. Open end, 13. First snap-fit ​​part, 14. Slurry outlet, 15. Slurry outlet pipe, 16. Fastening sleeve, 17. Valve, 18. Sealing gasket; 2. Bucket lid; 21. Second snap-fit ​​part; 22. Pressure gauge; 23. Lifting ring; 24. Safety port; 25. Pressure relief valve; 3. Air source structure, 31. Air inlet pipe, 4. Pressurization port, 5. Sealing cap, 51. Cap body, 52. First section, 53. Second section, 54. Sealing glue, 6. Liquid injection port, 7. Sealing cover, 8. First handle, 81. Lock, 9. Second handle, 91. Lock position; 10. Wheels. Detailed Implementation

[0019] The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present application will now be described in detail with reference to embodiments.

[0020] While manual or electric grouting equipment exists in related technologies, it typically suffers from the following problems: small pumps employ piston or screw structures, resulting in numerous parts and high manufacturing and maintenance costs; complex flow channels and mechanical structures are prone to clogging when conveying viscous grout, and cleaning after clogging is extremely inconvenient; some equipment remains bulky and unsuitable for confined spaces or frequent relocation scenarios; and the sealing method of the grouting port is limited, making it easy for grout leakage and pressure loss to occur if care is not taken.

[0021] To address the aforementioned problems, embodiments of this application provide a pneumatically driven concrete grouting material pump, such as... Figure 1-8 As shown, it includes: The silo 1 has a receiving cavity 11 for containing concrete slurry and a slurry outlet 14. The slurry outlet 14 is located at the bottom of the silo 1 and communicates with the receiving cavity 11. The bottom surface of the receiving cavity 11 is inclined 12. The end of the receiving cavity 11 away from the slurry outlet 14 is an open end A1, and a first snap-fit ​​part 13 is provided on the open end A1. Bucket lid 2, bucket lid 2 is placed on the open end A1, and bucket lid 2 is provided with a second snap-fit ​​part 21. The first snap-fit ​​part 13 and the second snap-fit ​​part 21 are snap-fitted together so that the sealing cover 7 of bucket lid 2 is placed on the open end A1. The pneumatic mechanism includes an air source structure 3 and a pressurization port 4 connected to the air source structure 3. The pressurization port 4 is located on the barrel cover 2 and is connected to the receiving cavity 11. A sealing cap 5 is sealed on the pressurization port 4. The injection port 6 is located on the lid 2 and communicates with the receiving cavity 11. A sealing cap 7 is sealed to the injection port 6. The outer wall of the injection port 6 is threaded. The sealing cap 7 includes a main cap body, a compression spring, and a sealing ring. The main cap body is threaded to mate with the injection port 6. The compression spring is installed inside the main cap body. One end of the compression spring is connected to the main cap body and the other end is connected to the sealing ring. When the main cap body is rotated to mate with the injection port 6, after the sealing ring contacts the sealing surface of the injection port 6, the main cap body is rotated, and the compression spring compresses the sealing ring to make tight sealing contact with the injection port 6.

[0022] The slurry discharge mechanism includes a slurry discharge pipe 15, a fastening sleeve 16, and a valve 17. The slurry discharge port 14 is provided with multiple rectangular threads, and the fastening sleeve 16 is provided with the recess of the rectangular threads. The slurry discharge pipe 15 is sealed to the slurry discharge port 14 through the fastening sleeve 16. The valve 17 is installed at the slurry discharge port 14 to control the opening and closing of the slurry discharge port 14.

[0023] The silo 1 primarily serves as a container for holding concrete slurry. The silo 1 can be freely moved or hoisted to the construction site to discharge the required concrete slurry. The silo 1 can be, but is not limited to, cylindrical, prismatic, etc., depending on actual needs. The silo 1 should be made of a material with good structural rigidity, undeformable under pressure, movement, and minor impacts. The silo 1's receiving cavity 11 is used to hold the concrete slurry. The bottom surface 12 of the receiving cavity 11 has an inclined angle of 15°-20° to facilitate the flow of the concrete slurry during operation, prevent settlement, and promote slurry discharge.

[0024] In some embodiments, the entire interior of the receiving cavity 11 may also be coated with an oil interface agent to prevent concrete slurry from adhering to the inner wall.

[0025] It is understandable that the grout outlet 14 is located at the bottom of the receiving cavity 11 near the lower end of the inclined surface 12, that is, the bottom of the receiving cavity 11 is inclined upward from the position away from the grout outlet 14. This is conducive to the smooth discharge of concrete grout under the action of the inclined surface 12 and gravity, and avoids the problems of settlement and blockage.

[0026] The lid 2 is placed on the open end A1 of the receiving cavity 11 and is mainly used to seal the receiving cavity 11 to ensure that there is a suitable pressure inside the receiving cavity 11 so that the concrete slurry can be discharged smoothly under pressure.

[0027] It is also understandable that the open end A1 of the receiving cavity 11 is provided with a first locking part 13, and the lid 2 is provided with a second locking part 21. The first locking part 13 and the second locking part 21 engage with each other, which facilitates the sealing of the open end A1 by the lid 2, and also facilitates the opening of the lid 2 for cleaning and maintenance of the inside of the receiving cavity 11. The first locking part 13 and the second locking part 21 can adopt any kind of detachable engagement method, such as, but not limited to, mortise and tenon structure, buckle and locking engagement, etc. Correspondingly, one of the first locking part 13 and the second locking part 21 can be a boss, and the other can be a groove that matches the boss; or one of the first locking part 13 and the second locking part 21 can be a buckle, and the other can be a locking position, which is determined according to actual needs.

[0028] The pneumatic mechanism is mainly used to inject compressed air into the receiving cavity 11 to increase the pressure inside the cavity 11. The air source structure 3 can be integrated into the hopper 1, or it can be a structure independent of the hopper 1. It is connected to the pressurization port 4 through the air inlet pipe 31. For example, the air source structure 3 can be an air compressor. The pressurization port 4 on the hopper cover 2 is connected to the air source structure 3 through a delivery pipe. The pressurization port 4 is equipped with a sealing cap 5 to ensure that air leakage does not occur during the air delivery process.

[0029] Injection port 6 is mainly used to inject concrete slurry into the receiving cavity 11. In actual use, after the concrete slurry is injected, injection port 6 is sealed by sealing cap 7, which helps to ensure stable pressure in the receiving cavity 11 and prevents air leakage that would prevent the concrete slurry from being reliably discharged from outlet 14. The main cover of sealing cap 7 is mainly used to thread with injection port 6. A compression spring is installed inside the main cover. The compression spring can be, but is not limited to, a helical spring, a wave spring (disc spring), or an elastic rubber ring. The sealing ring is usually an O-ring or flat washer made of rubber (such as silicone or nitrile rubber) or soft plastic, which has a practical sealing function. In actual use, when the main cover of the sealing cap 7 is rotated and screwed onto the injection port 6, the thread provides downward axial displacement. Before the cap is fully tightened, the sealing ring will contact the sealing surface of the injection port 6. Continue to rotate the cap. Since the thread has brought the cap to the lowest position, the continued application of force compresses the compression spring. Through the main cover, the sealing ring is compressed to achieve the seal between the sealing cap 7 and the injection port 6.

[0030] Understandably, the injection port 6 can also be used with a funnel to prevent leakage during grouting.

[0031] In actual construction, for self-mixed concrete slurry, the bucket lid can be opened directly and the slurry can be injected into the receiving cavity from the open end, which is convenient to operate; for centrally mixed concrete slurry, automatic grouting can be achieved from the injection port without opening the bucket lid, which is also conducive to ensuring the airtightness of the receiving cavity.

[0032] The slurry outlet 14 is located at the bottom of the receiving cavity 11 of the silo 1. The slurry outlet 14 is connected to the slurry outlet pipe 15 to transport the slurry to the work point. The slurry outlet 14 is provided with several rectangular threads, and the slurry outlet 14 and the slurry outlet pipe 15 can be sealed by a fastening sleeve 16. The slurry outlet pipe 15 can be a flexible hose or a semi-rigid pipe (when using a flexible hose, it should have sufficient pressure bearing capacity). The inner surface of the slurry outlet pipe 15 can be moistened with an interface agent or water to prevent the slurry from sticking to the inner wall. The fastening sleeve 16 is set in the recess of the rectangular threads to connect and seal the slurry outlet pipe 15 with the slurry outlet 14. In some embodiments, a curable sealant can be applied to the slurry outlet 14, and a circular clamp can be installed after the slurry outlet pipe 15 is fitted over it. A valve 17 is installed on the slurry outlet 14 to control the flow and closure of the slurry. The valve 17 can be, but is not limited to, a ball valve or a butterfly valve.

[0033] The pneumatically driven concrete grout pump provided by this invention has an open-top structure for the receiving cavity 11 of the hopper 1, which facilitates cleaning. A first locking part 13 is provided at the open end A1 of the receiving cavity 11, and a bucket lid 2 is placed on the open end A1. A second locking part 21 is provided on the bucket lid 2. The first locking part 13 and the second locking part 21 engage in a locking fit, which facilitates a sealing fit between the bucket lid 2 and the open end A1 of the hopper 1, helping to prevent pressure leakage. The pneumatic mechanism is used to inject air into the receiving cavity 11, stabilizing the pressure inside the receiving cavity 11. This facilitates the stable discharge of concrete grout and prevents blockage. Furthermore, the inclined surface 12 of the bottom layer of the receiving cavity 11 further facilitates the discharge of concrete grout from the outlet 14 under gravity, avoiding the problem of concrete grout settling and blockage. The injection port 6 is sealed on the bucket lid 2, which facilitates the injection of concrete grout into the receiving cavity 11 without frequently opening the bucket lid 2, making it convenient to use and helping to ensure stable pressure inside the receiving cavity 11.

[0034] In some embodiments, the cross-sections of the open end A1 and the lid 2 are circular, and the first snap-fit ​​portion 13 includes at least two snap teeth disposed on the open end A1. The at least two snap teeth are evenly spaced along the circumferential distance of the open end A1, and each snap tooth extends outward from the edge of the open end A1. The second locking part 21 includes at least two locking slots provided on the lid 2. The at least two locking slots are evenly spaced along the circumference of the lid 2, and each locking slot includes a protrusion extending outward from the edge of the lid 2 and a recess formed on the protrusion. The recess is formed by recessing inward from one side of the protrusion. When the lid 2 is rotated along the first direction, at least two locking teeth extend into the recess of each locking slot and engage with the recess. When the lid 2 is rotated along the second direction, at least two locking teeth disengage from the recess of each locking slot. The first direction and the second direction are opposite.

[0035] In this embodiment, the first snap-fit ​​part 13 may have two or more snap teeth, and the corresponding second snap-fit ​​part 21 may have two or more snap grooves. The number of snap teeth and snap grooves should be the same, so that each snap tooth and each snap groove can be snapped together, which can improve the sealing performance of the bucket lid 2 and the open end A1. Of course, in some embodiments, the number of snap grooves may be more than the number of snap teeth, which can ensure that the snap teeth and snap grooves can be reliably snapped together without strict alignment when the bucket lid 2 is put on, so as to achieve a sealed connection between the bucket lid 2 and the open end A1.

[0036] It is understandable that the locking teeth extend outward from the edge of the open end A1, that is, the locking teeth protrude from the edge of the open end A1; the locking groove includes a protrusion protruding from the edge of the lid 2 and a recess formed on the protrusion. The recess is recessed inward from one side of the protrusion along the direction of rotation. Its main purpose is to allow the locking teeth to extend into the recess after rotation to achieve a tight fit, similar to a mortise and tenon structure.

[0037] It is also understandable that both the lid 2 and the open end A1 are circular. When the lid 2 needs to be placed on the open end A1, the lid 2 is placed on the open end A1 and rotated so that the locking teeth of the first locking part 13 and the locking groove of the second locking part 21 are locked together to achieve a sealed connection between the lid 2 and the open end A1. When it is necessary to open the lid 2, the lid 2 is rotated in the opposite direction, and the locking teeth of the first locking part 13 and the locking groove of the second locking part 21 are separated to achieve the separation between the lid 2 and the open end A1.

[0038] In this embodiment, the first snap-fit ​​part 13 and the second snap-fit ​​part 21 have simple structures and are easy to operate. They can effectively connect and seal the barrel body and the barrel lid 2, and facilitate feeding and thorough cleaning after full opening.

[0039] In some other embodiments, the cross-sections of the open end A1 and the lid 2 are non-circular, and the first latching part 13 includes at least two latching platforms formed on the periphery of the open end A1, each latching platform protruding outward from the outer wall of the hopper 1. The second latching part 21 includes at least two latches disposed on the bucket lid 2. The at least two latches are correspondingly disposed with at least two latching platforms, and each latch is movably connected to the bucket lid 2. The latches and latching platforms are detachably latched together.

[0040] Understandably, since the cross-sections of the open end A1 and the lid 2 are not circular, the lid 2 cannot rotate. When installing the lid 2, the first snap-fit ​​part 13 and the second snap-fit ​​part 21 engage with each other using a snap-fit ​​and a locking platform. This facilitates a sealed connection between the lid 2 and the open end A1, and allows the lid 2 to be opened for cleaning the receiving cavity 11. The first snap-fit ​​part 13 includes a locking platform on the open end A1, and the second snap-fit ​​part 21 includes a snap-fit ​​on the lid 2. The snap-fit ​​is movably positioned so that it presses against the locking platform towards the open end A1 and releases itself from the locking platform in the direction away from the open end A1.

[0041] Of course, when the lid 2 and the open end A1 are circular, the same first snap-fit ​​part 13 and the second snap-fit ​​part 21 can be used.

[0042] The structure of the first locking part 13 and the second locking part 21 in this embodiment is suitable for bucket lids 2 and open ends A1 of various shapes, reliably achieving a sealing fit and opening of the bucket lid 2 and the open end A1. As an alternative, the lid 2 is also provided with a safety port 24 and a pressure relief valve 25. The safety port 24 is connected to the receiving cavity 11, and the pressure relief valve 25 is installed at the safety port 24.

[0043] In this embodiment, the safety port 24 and the pressure relief valve 25 are designed to improve the safety of the silo 1, allowing for the safe release of internal pressure after operation or in case of emergency, thus ensuring operational safety.

[0044] As an alternative, the hopper 1 is also equipped with a first handle 8, and the hopper lid 2 is equipped with a second handle 9.

[0045] In this embodiment, the first handle 8 and the second handle 9 facilitate the operation of the hopper 1 or the lid 2. The operator can place the lid 2 on the hopper 1 or remove the lid 2 from the hopper 1 by holding the second handle 9, and can also move the hopper 1 by holding the first handle 8.

[0046] In some embodiments, the positions of the first handle 8 and the second handle 9 are corresponding, one of the first handle 8 and the second handle 9 is provided with a locking position 91, and the other is provided with a latch 81, the latch 81 and the locking position 91 cooperate with each other.

[0047] Among them, the locking position 91 can be any structure, such as, but not limited to, a keyhole, a lock groove, or a lock hook; the corresponding locking bolt 81 can be a locking pin, a lock hook, etc., as long as the locking bolt 81 and the locking position 91 can cooperate with each other.

[0048] In this embodiment, by setting a locking position 91 and a latch 81 on the first handle 8 and the second handle 9 respectively, the operation of the bucket lid 2 and the hopper bucket 1 is facilitated, while the sealing performance of the bucket lid 2 and the hopper bucket 1 is further improved.

[0049] In some embodiments, the outer wall of the pressure port 4 is formed with a first threaded portion, the sealing cap 5 includes a cap body 51 and a second threaded portion, an opening is formed through the cap body 51, the opening includes a first section 52 and a second section 53, the inner diameter of the first section 52 is larger than the inner diameter of the second section 53, and the inner wall of the first section 52 is formed with a second threaded portion, the first threaded portion and the second threaded portion are threadedly engaged, and the interior of the second section 53 is filled with sealant 54.

[0050] In this embodiment, the pressure port 4 and the sealing cap 5 are threaded together, which helps to ensure the sealing performance of the pressure port 4. The opening on the cap body of the sealing cap 5 is mainly used to cooperate with the pressure port 4. The opening is divided into two sections with different inner diameters. On the one hand, it is used to seal with the threaded connection of the outer wall of the pressure port 4. On the other hand, the gap is sealed by filling the second section with sealant to improve the sealing effect.

[0051] The sealant is designed with a specific bonding strength to ensure that it can fail in an emergency to release pressure.

[0052] In a preferred embodiment, a sealing gasket 18 is also provided on the hopper 1. When the first snap-fit ​​part 13 and the second snap-fit ​​part 21 are engaged, the hopper lid 2 is pressed against the sealing gasket 18.

[0053] In this embodiment, the sealing gasket 18 can be, but is not limited to, a rubber gasket, and is placed between the barrel lid 2 and the open end A1. After the first snap-fit ​​part 13 and the second snap-fit ​​part 21 are engaged, the barrel lid 2 can press the sealing ring to achieve a reliable seal, effectively blocking the flow of air between the outside and the inside of the barrel, thus achieving the sealing of the barrel lid 2 and the open end A1 of the hopper barrel 1, and ensuring the stability of the pressure inside the receiving cavity 11.

[0054] As a possible implementation, the pneumatically driven concrete grout pump also includes at least three moving wheels 10, which are disposed on the bottom surface of the hopper 1.

[0055] Among them, the caster wheel 10 can be, but is not limited to, a swivel wheel, which has a locking structure to ensure stability after moving to the work point.

[0056] In this embodiment, casters 10 are provided on the bottom surface of the hopper 1, which facilitates the movement of the entire pump and makes operation convenient and labor-saving.

[0057] It is understandable that lifting rings 23 can also be installed on the bucket lid 2, so that when workers need to move through a narrow space, the pump can be hoisted onto the work platform by equipment such as tower cranes.

[0058] In some embodiments, a pressure gauge 22 is also provided on the lid 2, which is used to detect the pressure inside the receiving cavity 11.

[0059] The pressure gauge 22 is used to monitor the pressure inside the containment cavity 11 of the hopper 1 in real time, so as to accurately control the pumping speed. It can also be integrated and installed near the air inlet.

[0060] In summary, the pneumatically driven concrete grout pump of this application has almost no moving parts, greatly reducing manufacturing costs and failure rates. The main materials are readily available, primarily standard parts; components such as the air inlet, pressure relief valve 25, pressure gauge 22, sealing gasket 18, and valve 17 can all be directly purchased as commercially available standard industrial parts, eliminating the need for custom development. The entire device does not contain complex parts requiring high-precision machining, placing extremely low demands on manufacturing equipment; ordinary sheet metal, welding, and assembly processes are sufficient for production. Utilizing pneumatic pressure to propel the grout ensures smooth flow, eliminating mechanical extrusion parts and fundamentally preventing blockages. The equipment features a unique design, with an inner wall that can be coated with an interface agent to prevent adhesion. The openable lid 2 allows for easy cleaning of the inside of the hopper, while the inner wall of the hopper 1 is coated with an interface agent to prevent the grout from sticking to the hopper structure, minimizing maintenance workload. The lid 2 is sealed by a first snap-fit ​​part 13, a second snap-fit ​​part 21, and a sealing gasket 18, providing a sealing effect far superior to simple screw plugs or ordinary lids, effectively preventing pressure leakage. The equipment is lightweight and mobile, making it particularly suitable for small-scale, multi-point grouting operations. It offers stable pumping pressure and high grout density. A dedicated pressure relief valve 25 ensures operational safety.

[0061] The pneumatically driven concrete grout pump of the present invention will be described below through a specific embodiment.

[0062] Construct a pneumatically driven concrete grout pump with a capacity of approximately 40 liters.

[0063] like Figure 1-8 As shown, the grouting hopper 1 and the hopper cover 2 are welded from 3mm thick Q235 steel plates and steel pipes. When the second handle 9 is rotated, the hopper cover 2 is connected to the hopper 1 through the corresponding slots and the silicone rubber sealing gasket 18 is tightened. The sealing is achieved under the action of the sealing gasket 18, and the locking buckles 81 and locking position 91 of the first handle 8 and the second handle 9 are fastened. The air inflation port 4 is a standard quick connector. The pressure relief valve 25 is a spring-loaded safety valve with a set safety pressure of 0.8MPa. The grouting port diameter is 100mm and is sealed by the sealing cover 7. The grout outlet 14 has a diameter of 50mm and is equipped with a DN50 ball valve as the grout outlet control valve 17. The grout outlet 14 is connected to the grout outlet pipe 15 by a clamp. During operation, open the sealing cap 7 or the bucket cover 2 of the grouting port to add material. After filling, close the sealing cap 7 or the bucket cover 2, connect the compressed air source to the air pressurization port 4, pressurize to 0.3-0.5MPa, open the grout discharge ball valve, and the grout can be pumped out stably. After use, turn off the air source, open the pressure relief valve 25 to release pressure, and then open the bucket cover 2 for rinsing.

[0064] The pneumatically driven concrete grout pump of this embodiment has the following advantages: (1) The entire silo itself is used as a pressure vessel, and compressed air is used as the only power source to directly push the slurry liquid surface. This replaces the complex mechanical conveying mechanism such as piston, screw or diaphragm, which avoids blockage from the root and greatly simplifies the structure and reduces costs.

[0065] The quick-opening and closing lid greatly facilitates large-volume material filling and thorough internal cleaning and maintenance. The dedicated grouting port is equipped with a rotatable and pressurized sealing cap, achieving a balance between reliable sealing and convenient quick opening and closing. Two grouting methods cater to different needs, enabling quick operation with no or few tools and a convenient cleaning experience while ensuring no leakage of working pressure.

[0066] This design meets the dual needs of laboratory research and development and on-site construction. For scientific research experiments, its easy cleaning, controllable pressure, and good visibility make it an ideal material workability testing device; for engineering construction, its portability, efficiency, and low failure rate make it perfectly suited for small-scale and scattered projects.

[0067] Core pressure-bearing components such as the silo and lid can be made from ordinary carbon steel (such as Q235) sheet metal through rolling and welding, or manufactured using engineering plastics and composite materials through injection molding or winding processes. Materials are widely available and inexpensive. Standard parts are the primary components; inflator ports, pressure relief valves, pressure gauges, sealing rings, valves, and quick-connect clamps can all be directly purchased from commercially available standard industrial parts, eliminating the need for custom development. The entire equipment does not contain complex parts requiring high-precision machining, placing extremely low demands on manufacturing equipment; ordinary sheet metal, welding, and assembly processes are sufficient to meet production requirements.

[0068] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A pneumatically driven concrete grout pump, characterized in that, include: A silo bucket has a receiving cavity for containing concrete slurry and a slurry outlet. The slurry outlet is located at the bottom of the silo bucket and communicates with the receiving cavity. The bottom surface of the receiving cavity is inclined. The end of the receiving cavity away from the slurry outlet is an open end, and a first locking part is provided on the open end. A bucket lid, wherein the bucket lid is provided on the open end, and the bucket lid is provided with a second snap-fit ​​part, wherein the first snap-fit ​​part and the second snap-fit ​​part are snap-fitted together so that the bucket lid is sealed on the open end; A pneumatic mechanism, comprising an air source structure and a pressurization port connected to the air source structure, the pressurization port being located on the barrel lid and connected to the receiving cavity, and a sealing cap being sealed to the pressurization port; The injection port is located on the bucket lid and communicates with the receiving cavity. A sealing cap is sealed to the injection port. The outer wall of the injection port is threaded. The sealing cap includes a main cover body, a compression spring, and a sealing ring. The main cover body has threads that mate with the injection port. The compression spring is installed inside the main cover body. One end of the compression spring is connected to the main cover body, and the other end is connected to the sealing ring. When the main cover body is rotated to mate with the injection port, after the sealing ring contacts the sealing surface of the injection port, rotating the main cover body causes the compression spring to press the sealing ring into a tight sealing contact with the injection port. The slurry discharge mechanism includes a slurry discharge pipe, a fastening sleeve, and a valve. The slurry discharge port is provided with multiple rectangular threads, and the fastening sleeve is located in the recess of the rectangular threads. The slurry discharge pipe is sealed to the slurry discharge port through the fastening sleeve, and the valve is installed at the slurry discharge port to control the opening and closing of the slurry discharge port.

2. The pneumatically driven concrete grout pumping machine according to claim 1, characterized in that, The cross-sections of the open end and the bucket lid are circular. The first locking part includes at least two locking teeth disposed on the open end. The at least two locking teeth are evenly spaced along the circumferential direction of the open end, and each locking tooth extends outward from the edge of the open end. The second locking part includes at least two locking slots disposed on the bucket lid. The at least two locking slots are evenly spaced along the circumference of the bucket lid, and each locking slot includes a protrusion extending outward from the edge of the bucket lid and a recess formed on the protrusion. The recess is formed by recessing inward from one side of the protrusion. When the bucket lid is rotated along a first direction, the at least two locking teeth extend into the recess of each locking slot and engage with the recess. When the bucket lid is rotated along a second direction, the at least two locking teeth disengage from the recess of each locking slot. The first direction and the second direction are opposite.

3. The pneumatically driven concrete grouting material pumping machine according to claim 1, characterized in that, The first latching portion includes at least two latching platforms formed on the periphery of the open end, each of the latching platforms protruding outward from the outer wall of the hopper barrel; The second snap-fit ​​part includes at least two snaps disposed on the bucket lid, the at least two snaps being disposed corresponding to the at least two locking platforms, and each snap is movably connected to the bucket lid, and the snaps are detachably snapped into the locking platforms.

4. The pneumatically driven concrete grouting material pumping machine according to claim 1, characterized in that, The bucket lid is also provided with a safety port and a pressure relief valve. The safety port is connected to the receiving cavity, and the pressure relief valve is installed at the safety port.

5. The pneumatically driven concrete grouting material pumping machine according to claim 1, characterized in that, The hopper is also equipped with a first handle, and the hopper lid is equipped with a second handle.

6. The pneumatically driven concrete grouting material pumping machine according to claim 1, characterized in that, The first handle and the second handle are positioned correspondingly. One of the first handle and the second handle is provided with a locking position, and the other is provided with a latch. The latch and the locking position cooperate with each other.

7. The pneumatically driven concrete grouting material pumping machine according to claim 1, characterized in that, The outer wall of the pressurization port is formed with a first threaded portion. The sealing cap includes a cap body and a second threaded portion. An opening is formed through the cap body. The opening includes a first section and a second section. The inner diameter of the first section is larger than the inner diameter of the second section. The inner wall of the first section is formed with the second threaded portion. The first threaded portion and the second threaded portion are threadedly engaged. The interior of the second section is filled with sealant.

8. The pneumatically driven concrete grout pump according to claim 1, characterized in that, The pneumatically driven concrete grout pump also includes at least three wheels, which are disposed on the bottom surface of the silo. The lid of the container is also provided with at least two lifting rings, which are used to lift and move the hopper.

9. The pneumatically driven concrete grout pump according to any one of claims 1-8, characterized in that, A pressure gauge is also installed on the lid of the container, which is used to detect the pressure inside the cavity.

10. The pneumatically driven concrete grout pump according to any one of claims 1-8, characterized in that, The hopper is also equipped with a sealing gasket. When the first snap-fit ​​part and the second snap-fit ​​part are engaged, the hopper lid is pressed against the sealing gasket.

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