Epoxy concrete stirring device

Abstract

An epoxy concrete stirring device is used for solving the problems that underwater epoxy repairing materials are stored in a layered mode, the mixing time is uncontrollable, and underwater operation is inconvenient. The device comprises a stirring kettle, a kettle cover and an internal partition plate, wherein the partition plate divides a cavity into an upper-layer curing agent storage area and a lower-layer mortar mixing area; a seepage mechanism is arranged in the center of the partition plate, a movable plug is in linkage with an inner wall bayonet lock through a threaded groove in the outer wall of a stirring shaft, the stirring shaft rotates to drive the movable plug to move upwards, seepage holes in the outer wall of a liquid collecting groove are opened, and controllable inflow of a curing agent into mortar is achieved; the feeding port and the discharging port are controlled to be opened and closed through a hydraulic valve, a hydraulic machine and a hydraulic clamp respectively. According to the device, advanced reaction of components is avoided through layered isolation, mixing is accurately triggered through mechanical linkage, hydraulic driving adapts to underwater operation, it is ensured that the low consistency and high uniformity of materials are kept, and the reliability of underwater repair construction and the performance stability of the materials are improved.

Description

Technical Field

[0001] This utility model relates to the field of building construction equipment technology, and in particular to an epoxy concrete mixing device. Background Technology

[0002] Underwater structures (such as port terminals, reservoir dams, and cross-sea bridge foundations) are often damaged by long-term water erosion, biological adhesion, and chemical corrosion, resulting in cracks and spalling. Underwater repair materials are required for their restoration. HK-UW-1 underwater casting epoxy mortar (concrete), a high-strength, underwater-curing polymer composite material, possesses excellent properties such as non-dispersion underwater, self-leveling, and self-compacting characteristics, and is widely used in underwater structure repair projects.

[0003] HK-UW-1 material consists of three components: A, B, and C (component A is adhesive, component B is sand aggregate, and component C is hardener). Its application requires strict adherence to the process of "first mixing components A and B to form mortar, then precisely mixing with component C (hardener)." If the three components are mixed prematurely, the hardener will react with the adhesive, causing a sharp increase in material viscosity and a decrease in flowability, failing to meet the requirements for underwater self-leveling and self-compacting. Insufficient mixing will affect material strength and curing uniformity, reducing repair effectiveness. Currently, traditional concrete mixing equipment can only achieve single-chamber mixing, failing to meet the requirements for layered storage and controlled mixing of HK-UW-1 material.

[0004] 1. The existing equipment does not have a layered structure design. Components A, B, and C need to be added manually in steps before stirring, which makes it difficult to avoid premature contact and reaction of the components.

[0005] 2. The timing of mixing depends on manual experience. During underwater operations, it is impossible to accurately trigger the mixing of the curing agent and mortar by manual operation, which can easily lead to unstable material properties. Summary of the Invention

[0006] In view of the technical problems existing in the background technology, the present invention provides an epoxy concrete mixing device that can store multi-component materials in layers, accurately control the mixing time, and is suitable for underwater construction scenarios. This solves the problems of premature reaction of components, uneven mixing, and inconvenience of underwater operation in the mixing process of underwater repair materials such as HK-UW-1 in existing equipment.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] An epoxy concrete mixing device includes a mixing vessel and a vessel cover. The vessel cover is connected to the upper opening of the mixing vessel and fixed by connecting bolts. A feed inlet is provided on the upper surface of the vessel cover, and a discharge outlet is provided at the lower end of the mixing vessel. A stirring motor is installed on the top of the vessel cover. A partition is provided at the internal connection between the vessel cover and the mixing vessel. The stirring motor is connected to the stirring system inside the mixing vessel. A seepage mechanism is provided on the partition.

[0009] In a preferred embodiment, the stirring system includes a stirring shaft, the upper end of which is engaged with the drive shaft of a stirring motor, the lower end of which is rotatably connected to a bearing seat inside the stirring vessel, the stirring shaft vertically penetrating a partition, and a spiral stirring blade is provided on the outer wall of the stirring shaft.

[0010] In a preferred embodiment, a hydraulic valve is installed at the feed inlet to control the opening and closing of the feed inlet, and a hydraulic press is installed at the discharge outlet. The hydraulic press is connected to a hydraulic clamp to control the opening and closing of the discharge outlet.

[0011] In a preferred embodiment, the seepage mechanism includes a collection tank located at the center of the partition. A movable plug is provided inside the collection tank, and seepage holes are provided on the outer wall of the collection tank. The movable plug is sleeved on the outer wall of the stirring shaft and can slide up and down.

[0012] In a preferred embodiment, a threaded hole is provided on the upper end face of the partition plate, and the threaded hole is symmetrically distributed in a ring around the liquid collection tank. A threaded connector is provided at the bottom of the baffle and is threadedly connected to the threaded hole.

[0013] In a preferred embodiment, a baffle is provided at the upper end face of the movable plug.

[0014] In a preferred embodiment, a threaded groove is provided on the outer wall of the stirring shaft, and a retaining pin is provided on the inner wall of the movable plug and engages with the threaded groove. When the stirring shaft rotates, it can drive the movable plug to slide upward through the threaded groove.

[0015] An epoxy concrete mixing device, which can achieve the following beneficial effects in actual use:

[0016] 1. The device divides the interior of the mixing tank into two layers via a partition: the lower layer stores the mortar (adhesive and aggregate) after the mixture of components A and B, while the upper layer stores component C (hardener). The two layers are completely isolated by the partition, with controllable communication only achieved through a seepage mechanism (collection tank, movable plug). This design completely solves the problem of "premature contact and reaction of the three components" caused by the lack of a layered structure in traditional equipment. It avoids problems such as a sudden increase in viscosity and a decrease in flowability caused by premature reaction between the adhesive and hardener, ensuring that the HK-UW-1 material maintains a low-viscosity, high-flowability initial state before underwater construction, meeting the construction requirements of self-leveling and self-compacting.

[0017] 2. The seepage mechanism utilizes a linkage design of "stirring shaft threaded groove - movable plug pin" to achieve precise control of the curing agent's flow into the lower layer: When the stirring shaft rotates (stirring motor starts), the threaded groove drives the movable plug upward through the pin, opening the seepage hole on the outer wall of the collection tank. The curing agent flows into the lower mortar through the hole under gravity; when the stirring shaft stops, the movable plug settles and resets under its own gravity, closing the seepage hole. This mechanical linkage method eliminates the need for manual operation and can directly trigger mixing in an underwater environment by starting and stopping the motor. It avoids the shortcomings of traditional equipment where "mixing timing depends on human experience," ensuring that the curing agent and mortar mix at the optimal time, improving material strength and curing uniformity. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a view of the overall structure of this utility model;

[0020] Figure 2 The overall structural appearance of this utility model Figure 2 ;

[0021] Figure 3 This is a cross-sectional view of the internal structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal seepage mechanism and stirring structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the internal seepage mechanism and stirring structure of this utility model. Figure 2 ;

[0024] Figure 6 This is a cross-sectional view of the seepage mechanism and stirring structure of this utility model.

[0025] In the diagram: 1. Stirring vessel; 2. Vessel cover; 3. Feed inlet; 4. Hydraulic valve; 5. Stirring motor; 6. Discharge outlet; 7. Hydraulic press; 8. Hydraulic clamp; 9. Connecting bolt; 10. Partition plate; 11. Stirring shaft; 12. Stirring blade; 13. Bearing seat; 14. Drive shaft; 15. Liquid collection tank; 16. Leakage hole; 17. Movable plug; 18. Threaded hole; 19. Stop bar; 20. Threaded connector; 21. Threaded groove; 22. Baffle plate. Detailed Implementation

[0026] like Figure 1 and Figure 2As shown, an epoxy concrete mixing device includes a mixing vessel 1 and a lid 2. The lid 2 is connected to the upper opening of the mixing vessel 1 and fixed by connecting bolts 9 evenly distributed along the edge of the opening, and sealed with a sealing ring. A feed inlet 3 is provided on the upper surface of the lid 2 for injecting component C curing agent into the upper cavity; its diameter is adapted to external injection equipment. A discharge outlet 6 is provided at the lower end of the mixing vessel 1 for discharging the uniformly mixed epoxy concrete; the opening size matches construction requirements. A waterproof mixing motor 5 with an IP68 protection rating, suitable for underwater environments, is installed on the top of the lid 2. A horizontal stainless steel plate partition 10 with a thickness of 5-10mm is provided at the connection between the lid 2 and the mixing vessel 1, dividing the cavity into an upper curing agent storage area and a lower mortar mixing area. The mixing motor 5 is connected to the mixing system inside the mixing vessel 1. A seepage mechanism is provided on the partition 10 to control the controlled release of curing agent into the lower layer.

[0027] Preferred solutions such as Figure 3 and Figure 4 As shown, the mixing system includes a stirring shaft 11. When the vessel lid 2 is closed, the stirring shaft 11 engages precisely with the drive shaft 14 of the stirring motor 5. The lower end of the stirring shaft 11 is rotatably connected to a bearing seat 13 with a built-in deep groove ball bearing, allowing high-speed rotation while bearing radial loads. The stirring shaft 11 vertically penetrates the partition plate 10, and its clearance-fitting hole wall is fitted with a wear-resistant bushing to reduce friction. The outer wall of the stirring shaft 11 is provided with spiral stirring blades 12 with a helix angle of 45°, which generate a downward material pushing force when rotating, promoting the convective mixing of the curing agent and mortar.

[0028] Preferred solutions include Figure 1 As shown, an electromagnetic hydraulic valve 4 is installed at the feed inlet 3. The valve plate moves up and down by hydraulic oil, and a sealing ring is installed at the valve port to prevent water from seeping in during underwater operations. A double-acting hydraulic cylinder type hydraulic press 7 is installed at the discharge port 6. It is connected to a hydraulic clamp 8 and controls the opening and closing of the discharge port 6. The piston rod drives the symmetrically distributed hydraulic clamp claws, and the discharge port is opened and closed quickly through the lever principle. The edges of the clamps are equipped with elastic sealing gaskets.

[0029] Preferred solutions include Figures 3 to 6 As shown, the seepage mechanism includes a cylindrical grooved collection tank 15 located at the center of the partition plate 10, with a smooth inner wall to reduce material adhesion. Inside the collection tank 15 is a movable plug 17 made of polytetrafluoroethylene (PTFE), which fits the collection tank with a clearance fit, providing wear resistance and corrosion resistance. The outer wall of the collection tank 15 has two seepage holes 16 with a diameter of 8-10 mm, positioned 20 mm above the initial liquid level of the lower mortar layer to prevent backflow. The movable plug 17 is fitted onto the outer wall of the stirring shaft 11 and can slide up and down. An inner wall boss is embedded in the threaded groove of the stirring shaft, forming a helical drive pair that converts rotational motion into axial displacement.

[0030] Preferred solutions include Figure 5As shown, four M8 threaded holes 18 are symmetrically distributed in a ring around the liquid collection tank 15 on the upper surface of the partition plate 10, with equal spacing, forming a stable limiting support structure. The threaded connector 20 at the bottom of the stop lever 19 is threadedly connected to the threaded holes 18. The upper surface of the movable plug 17 is provided with a circular metal baffle 22 with a diameter 5mm larger than the outer diameter of the liquid collection tank. The maximum stroke of the movable plug 17 can be controlled by controlling the contact stroke between the metal baffle 22 and the stop lever 19.

[0031] Preferred solutions include Figure 6 As shown, the outer wall of the stirring shaft 11 is provided with a right-hand rectangular threaded groove 21 with a pitch of 25 mm and a depth of 3 mm, which precisely matches the retaining pin on the inner wall of the movable plug. The cylindrical pin on the inner wall of the movable plug 17 is interference-fitted and forms a sliding pair with the threaded groove, so that when the stirring shaft 11 rotates, it can drive the movable plug 17 to slide upward through the threaded groove 21. When rotating clockwise, the retaining pin spirals up along the threaded groove, realizing the automatic upward movement of the movable plug and precisely controlling the opening sequence of the seepage hole. When the metal baffle 22 contacts the stop rod 19, the movable plug 17 can stop sliding upward. When the stirring shaft 11 stops rotating, the movable plug 17 slides downward under its own weight and blocks the seepage hole 16 on the collection tank 15.

[0032] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. An epoxy concrete mixing device, comprising a mixing vessel (1) and a vessel cover (2), characterized in that: The upper opening of the mixing vessel (1) is connected to the lid (2) and fixed by connecting bolts (9). The upper surface of the lid (2) is provided with a feed inlet (3), and the lower end of the mixing vessel (1) is provided with a discharge outlet (6). The top of the lid (2) is equipped with a stirring motor (5), and a partition (10) is provided at the internal connection between the lid (2) and the mixing vessel (1). The stirring motor (5) is connected to the stirring system inside the mixing vessel (1), and a seepage mechanism is provided on the partition (10).

2. The epoxy concrete mixing device according to claim 1, characterized in that: The stirring system includes a stirring shaft (11), the upper end of which is engaged with the drive shaft (14) of the stirring motor (5), the lower end of which is rotatably connected to the bearing seat (13) inside the stirring vessel (1), the stirring shaft (11) vertically penetrates the partition plate (10), and a spiral stirring blade (12) is provided on the outer wall of the stirring shaft (11).

3. The epoxy concrete mixing device according to claim 1, characterized in that: A hydraulic valve (4) is installed at the feed inlet (3) to control the opening and closing of the feed inlet (3), and a hydraulic press (7) is installed at the discharge outlet (6). The hydraulic press (7) is connected to a hydraulic clamp (8) and controls the opening and closing of the discharge outlet (6).

4. The epoxy concrete mixing device according to claim 1, characterized in that: The seepage mechanism includes a collection tank (15), which is located at the center of the partition (10). A movable plug (17) is provided inside the collection tank (15), and a seepage hole (16) is provided on the outer wall of the collection tank (15). The movable plug (17) is sleeved on the outer wall of the stirring shaft (11) and can slide up and down.

5. The epoxy concrete mixing device according to claim 4, characterized in that: A threaded hole (18) is provided on the upper end face of the partition (10). The threaded hole (18) is symmetrically distributed in a ring around the liquid collection tank (15). A threaded connector (20) is provided at the bottom of the baffle (19) and is threadedly connected to the threaded hole (18).

6. The epoxy concrete mixing device according to claim 5, characterized in that: A baffle (22) is provided on the upper end face of the movable plug (17).

7. The epoxy concrete mixing device according to claim 6, characterized in that: A threaded groove (21) is provided on the outer wall of the stirring shaft (11), and a locking pin is provided on the inner wall of the movable plug (17) and engages with the threaded groove (21). When the stirring shaft (11) rotates, it can drive the movable plug (17) to slide upward through the threaded groove (21).

Images