Discharging structure of concrete mixer

Abstract

The utility model relates to a concrete mixer discharging structure, and belongs to the technical field of concrete mixing, the concrete mixer discharging structure comprises a concrete mixer, the bottom end of the concrete mixer is provided with a discharging cylinder, the concrete mixer is provided with a control valve for controlling the discharging cylinder to be opened and closed, and the outer portion of the discharging cylinder is slidably and hermetically provided with a movable outer cylinder; a rotating ring is arranged on the outer portion of the movable outer cylinder in a circumferential limiting rotating mode. The concrete mixer is provided with a pushing assembly which drives the rotating ring and the movable outer cylinder to move integrally in a matched mode. According to the discharging structure of the concrete mixer, the situation that concrete overflows out of the feeding hopper of the mixing tank when the control valve is opened for discharging is avoided, meanwhile, the phenomenon that concrete splashes down during discharging due to the fact that a certain distance exists between a traditional discharging opening and the feeding hopper of the mixing tank is avoided, and the situation that the concrete is attached to the ground and slides down from the traditional discharging opening is avoided; and meanwhile, concrete solidification or ground pollution caused by water cleaning is avoided.

Description

Technical Field

[0001] This utility model relates to the field of concrete mixing technology, specifically to the discharge structure of a concrete mixer. Background Technology

[0002] A concrete mixer is a machine that mixes cement, sand and gravel aggregates and water to produce concrete mixture. It mainly consists of a mixing drum, feeding and unloading mechanism, water supply system, prime mover, transmission mechanism, frame and support device.

[0003] The discharge structure of a concrete mixer consists of a discharge port, a discharge valve, and a control and safety system. The control and safety system controls the opening and closing of the discharge valve, allowing the mixed concrete to be discharged through the discharge port. During discharge, the feed hopper of the concrete mixer truck moves below the discharge port to receive the material. During the receiving process, excessive flow velocity can easily cause concrete to overflow or splash into the feed hopper of the mixing tank. At the same time, after discharge, concrete can easily adhere to the discharge port, affecting subsequent discharge operations. Therefore, we propose a new discharge structure for concrete mixers to address this defect in existing technology. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a discharge structure for a concrete mixer.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a concrete mixer discharge structure, including a concrete mixer, a discharge cylinder at the bottom of the concrete mixer, a control valve on the concrete mixer for controlling the opening and closing of the discharge cylinder, a movable outer cylinder for sliding sealing on the outside of the discharge cylinder, and a rotating ring for circumferentially limiting the rotation of the movable outer cylinder.

[0006] The concrete mixer is equipped with a pushing assembly that works to drive the rotating ring and the movable outer cylinder to move as a whole.

[0007] The outer side of the movable outer cylinder is provided with a toothed ring, and the pushing component is provided with a driving component. The driving component cooperates with the toothed ring to drive the movable outer cylinder to rotate. The inner wall of the movable outer cylinder is provided with a scraper that fits against the inner wall of the discharge cylinder.

[0008] The bottom of the movable outer cylinder is equipped with a cover plate.

[0009] The technical scheme is characterized in that the push-moving assembly is arranged to push the rotating ring and the movable outer cylinder to move, so that the movable outer cylinder moves downward under the sealing of the discharge cylinder, and the cover plate is moved downward to be arranged on the surface of the feeding hopper of the stirring tank to be sealed, thereby avoiding that the concrete flows out of the feeding hopper when the control valve is opened to discharge, and the control valve is closed after the discharging is completed, the movable outer cylinder is moved upward by the push-moving assembly, the concrete on the inner wall of the movable outer cylinder is scraped off by the discharge cylinder, and the movable outer cylinder is driven to rotate in the rotating ring by the driving assembly and the gear ring, so that the scraper is driven to rotate, and the concrete on the inner wall of the discharge cylinder is scraped off, thereby avoiding that the concrete adheres to and slides to the ground, and avoiding that the concrete solidifies or needs to be cleaned by water.

[0010] As a preferred technical scheme of the utility model, the movable outer cylinder is externally provided with an annular groove for circumferential rotation of the rotating ring.

[0011] The technical scheme is characterized in that the rotating ring is circumferentially limited to rotate in the annular groove.

[0012] As a preferred technical scheme of the utility model, the push-moving assembly comprises a hydraulic push rod detachably arranged at the lower end of the concrete mixer, and the push rod of the hydraulic push rod is provided with a loading plate connected with the rotating ring.

[0013] The technical scheme is characterized in that the push-moving assembly pushes the rotating ring and the movable outer cylinder to move as a whole.

[0014] As a preferred technical scheme of the utility model, the driving assembly comprises a driving motor detachably arranged at the lower end of the loading plate, and the output shaft of the driving motor is provided with a toothed disc engaged with the gear ring.

[0015] The technical scheme is characterized in that the driving assembly drives the gear ring and the movable outer cylinder to rotate.

[0016] As a preferred technical scheme of the utility model, when the movable outer cylinder is located at the uppermost position outside the discharge cylinder, the upper surface of the scraper is flush with the upper surface of the discharge cylinder.

[0017] The technical scheme is characterized in that the scraper can scrape off the concrete adhered to the inner wall of the discharge cylinder.

[0018] As a preferred technical scheme of the utility model, the cover plate is provided with a discharge hole communicated with the movable outer cylinder, and the bottom of the cover plate is provided with a sealing rubber pad communicated with the discharge hole.

[0019] The technical scheme is characterized in that the sealing rubber pad ensures the sealing effect of the cover plate on the feeding hopper of the stirring tank.

[0020] As a preferred embodiment of this utility model, the upper end of the sealing rubber gasket is provided with a plurality of locking screws passing through the cover plate, and the external threads of the locking screws are connected to locking nuts.

[0021] Using the above technical solution, the installation and removal of the sealing rubber gasket are achieved by the threaded locking engagement of the locking nut and the locking screw.

[0022] As a preferred embodiment of this utility model, a sealing ring is fitted to the inner wall of the movable outer cylinder.

[0023] By adopting the above technical solution, the sealing ring ensures a tight seal between the moving outer cylinder and the discharge cylinder.

[0024] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0025] 1. The discharge structure of this concrete mixer uses a pusher assembly to move the rotating ring and the moving outer cylinder. The moving outer cylinder moves downwards and seals the discharge cylinder, simultaneously causing the cover plate to move downwards and seal the surface of the mixing tank's feed hopper. This prevents concrete from overflowing the feed hopper when the control valve is opened, and also avoids the concrete splashing that occurs during unloading due to the distance between the discharge port and the mixing tank's feed hopper. After discharge, the control valve is closed, and the pusher assembly moves the moving outer cylinder upwards. Concrete on the inner wall of the moving outer cylinder is scraped off through the discharge cylinder. The drive assembly meshes with the gear ring, causing the moving outer cylinder to rotate circumferentially within the rotating ring, simultaneously rotating the scraper. The scraper then scrapes away concrete from the inner wall of the discharge cylinder, preventing concrete from adhering to the discharge port and sliding to the ground, thus avoiding concrete hardening or requiring water cleaning to contaminate the ground.

[0026] 2. The discharge structure of this concrete mixer ensures the sealing of the cover plate on the surface of the mixing tank feed hopper by means of a sealing rubber gasket. At the same time, the installation and fixing of the sealing rubber gasket and the cover plate, as well as the disassembly and replacement of the sealing rubber gasket, are achieved by the threaded locking engagement of the locking screw and the locking nut. Attached Figure Description

[0027] Figure 1 This is a perspective view of the present utility model;

[0028] Figure 2 This is a partial cross-sectional perspective view of the present invention;

[0029] Figure 3 This utility model Figure 2 A bottom view;

[0030] Figure 4 This utility model Figure 2a perspective view of the deflection;

[0031] Figure 5 The utility model discloses Figure 2 a sectional view.

[0032] In the figure: 1, concrete mixer;2, discharge cylinder;3, control valve;4, mobile outer cylinder;5, scraper;6, annular groove;7, rotating ring;8, hydraulic push rod;9, loading plate;10, gear ring;11, drive motor;12, toothed disc;13, cover plate;14, sealing rubber pad;15, locking screw;16, locking nut. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0034] Please refer to Figures 1 to 5 , embodiment one, concrete mixer discharge structure, including concrete mixer 1 and discharge cylinder 2, the bottom end surface of concrete mixer 1 is communicated with discharge cylinder 2, is used for discharging the mixed concrete of stirring.

[0035] Control valve 3, the outside of concrete mixer 1 is fixed by bolt installation and is provided with control valve 3 for controlling the opening and closing of discharge cylinder 2, for controlling the start and stop of discharge.

[0036] Mobile outer cylinder 4 and rotating ring 7, discharge cylinder 2 outside sliding seal is equipped with mobile outer cylinder 4, and the circumference of mobile outer cylinder 4 is limited and rotated with rotating ring 7, guaranteeing that rotating ring 7 does not rotate with mobile outer cylinder 4 when rotating.

[0037] It needs to be added that the outside of mobile outer cylinder 4 is equipped with annular groove 6 for the circumferential rotation of rotating ring 7, to avoid the separation of mobile outer cylinder 4 and rotating ring 7.

[0038] Concrete mixer 1 is equipped with push assembly that is driven to move rotating ring 7 and mobile outer cylinder 4 as a whole.

[0039] Push assembly, including hydraulic push rod 8 that is detachably installed and fixed on the bottom end surface of concrete mixer 1 by bolt, and the push rod of hydraulic push rod 8 is installed and fixed with loading plate 9 connected with rotating ring 7, and hydraulic push rod 8 pushes loading plate 9 and rotating ring 7 to move as a whole.

[0040] The outside of mobile outer cylinder 4 is equipped with gear ring 10, and drive assembly is arranged on push assembly.

[0041] The driving assembly comprises a driving motor 11 and a gear disc 12, the driving motor 11 is fixed on the lower end surface of the loading plate 9 by bolts, the gear disc 12 fixed on the output shaft of the driving motor 11 is engaged with the gear ring 10 outside the moving outer cylinder 4, and the moving outer cylinder 4 is driven to rotate.

[0042] The scraper 5 and the cover plate 13: the scraper 5 fixed on the inner wall of the moving outer cylinder 4 is attached to the inner wall of the discharging cylinder 2, and is used for scraping the concrete on the inner wall of the discharging cylinder 2; the cover plate 13 fixed on the bottom of the moving outer cylinder 4 is used for closing the feeding hopper of the mixing tank.

[0043] It should be noted that when the moving outer cylinder 4 is located at the uppermost position outside the discharging cylinder 2, the upper surface of the scraper 5 is flush with the upper surface of the discharging cylinder 2, and the cover plate 13 is provided with a discharging hole communicated with the moving outer cylinder 4.

[0044] The upper end of the sealing rubber pad 14 is provided with a plurality of locking screws 15 penetrating through the cover plate 13, the outer threads of the locking screws 15 are connected with locking nuts 16, the locking screws 15 and the locking nuts 16 are screwed tightly, and the installation and disassembly and replacement of the sealing rubber pad 14 and the cover plate 13 are realized.

[0045] Operation process, discharging preparation: when the concrete mixing is completed, the control valve 3 is opened, and the discharging is prepared.

[0046] Moving outer cylinder down: the hydraulic push rod 8 pushes the loading plate 9 and the rotating ring 7 to move downward, drives the moving outer cylinder 4 to slide downward along the outer wall of the discharging cylinder 2, and the cover plate 13 moves downward and covers the surface of the feeding hopper of the mixing tank to close and seal, the sealing rubber pad 14 improves the sealing of the cover, and prevents the concrete from overflowing or splashing.

[0047] Discharging: the concrete is discharged from the discharging cylinder 2 under the action of gravity and enters the feeding hopper of the mixing tank.

[0048] Discharging completion: after the discharging is completed, the control valve 3 is closed.

[0049] Moving outer cylinder 4 up and scraping: the hydraulic push rod 8 drives the moving outer cylinder 4 to move upward to the top, and the moving outer cylinder 4 scrapes the concrete attached to the inner wall of the moving outer cylinder 4 during the rising process.

[0050] Rotating cleaning: the driving motor 11 is started, the moving outer cylinder 4 is driven to rotate in the rotating ring 7 through the engagement of the gear disc 12 and the gear ring 10, and the scraper 5 is driven to rotate synchronously, so that the scraper 5 scrapes the concrete attached to the inner wall of the discharging cylinder 2.

[0051] Prevent concrete from overflowing or splashing: By moving the outer cylinder 4 and the cover plate 13 and the sealing rubber pad 14, the feeding hopper of the mixing tank is effectively sealed, effectively preventing concrete from overflowing or splashing during discharge, keeping the working environment clean.

[0052] Efficient cleaning: The connection rotation of the scraper bar 5 and the moving outer cylinder 4, and the sliding design of the moving outer cylinder 4 outside the discharge cylinder 2, ensure that the concrete inside the discharge cylinder 2 and the moving outer cylinder 4 is thoroughly cleaned, reducing the risk of residue and solidification.

[0053] Good sealing performance: The cooperation of the sealing rubber pad 14 and the locking screw 15 and the locking nut 16 facilitates the replacement of the sealing rubber pad 14, ensuring the sealing effect of the cover plate 13 and preventing concrete leakage.

[0054] Easy operation: The automatic control of the hydraulic push rod 8 and the drive motor 11 makes the whole discharge and cleaning process easy to operate, improving work efficiency.

[0055] Example two, structure optimization, sealing enhancement: Increase the sealing ring inside the moving outer cylinder 4 to further improve the sealing effect between the moving outer cylinder 4 and the discharge cylinder 2, preventing concrete leakage.

[0056] Wear-resistant design: The scraper bar 5 is made of wear-resistant material, prolonging the service life and ensuring long-term stable operation.

[0057] Operation optimization, precise control: The automatic control system is implanted in this application to realize precise control of the hydraulic push rod 8 and the drive motor 11, ensuring that the moving and rotating speed of the moving outer cylinder 4 meets the process requirements.

[0058] Beneficial effect, improve sealing: The increase of the sealing ring effectively prevents concrete leakage, further improving the reliability of the equipment.

[0059] Prolong the service life: The use of wear-resistant materials reduces the wear of the scraper bar 5, reducing maintenance costs.

[0060] Enhance operational flexibility: Automation makes operation more flexible and efficient, adapting to different working conditions.

[0061] In summary, the concrete mixer discharge structure of the present application effectively solves the problems existing in the prior art through innovative design, and has significant advantages in preventing concrete from overflowing, ensuring cleaning effect, improving sealing performance, etc. Through the detailed description of multiple embodiments, the applicability and reliability of the device under different configurations and operating conditions are demonstrated, providing an efficient, environmentally friendly and stable solution for concrete production, with broad application prospects and promotional value.

[0062] The electric appliance elements appearing in the text are electrically connected with the master controller and the power supply, the master controller can be a conventional known device such as a computer for control, and the existing disclosed power connection technology is not described herein.

[0063] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A discharge structure for a concrete mixer, comprising a concrete mixer, wherein a discharge cylinder is provided at the bottom end of the concrete mixer, and a control valve is provided on the concrete mixer to control the opening and closing of the discharge cylinder, characterized in that, The discharge cylinder has a sliding seal on its exterior with a movable outer cylinder, and the movable outer cylinder has a rotating ring that limits its rotation in the outer circumferential direction. The concrete mixer is equipped with a pushing assembly that works to drive the rotating ring and the movable outer cylinder to move as a whole. The outer side of the movable outer cylinder is provided with a toothed ring, and the pushing component is provided with a driving component. The driving component cooperates with the toothed ring to drive the movable outer cylinder to rotate. The inner wall of the movable outer cylinder is provided with a scraper that fits against the inner wall of the discharge cylinder. The bottom of the movable outer cylinder is equipped with a cover plate.

2. The concrete mixer discharge structure according to claim 1, characterized in that: The outer surface of the movable outer cylinder is provided with an annular groove for the rotating ring to rotate circumferentially.

3. The concrete mixer discharge structure according to claim 1, characterized in that: The pushing assembly includes a hydraulic push rod detachably located at the lower end of the concrete mixer, and the push rod of the hydraulic push rod is provided with a loading plate connected to the rotating ring.

4. The concrete mixer discharge structure according to claim 3, characterized in that: The drive assembly includes a drive motor detachably located at the lower end of the loading plate, and the output shaft of the drive motor is provided with a gear disc that meshes with the gear ring.

5. The concrete mixer discharge structure according to claim 1, characterized in that: When the movable outer cylinder is located at the top outside the discharge cylinder, the upper surface of the scraper is aligned with the upper surface of the discharge cylinder.

6. The concrete mixer discharge structure according to claim 1, characterized in that: The cover plate is provided with a discharge hole communicating with the movable outer cylinder, and the bottom of the cover plate is provided with a sealing rubber gasket communicating with the discharge hole.

7. The concrete mixer discharge structure according to claim 6, characterized in that: The upper end of the sealing rubber gasket is provided with multiple locking screws that pass through the cover plate, and the external threads of the locking screws are connected to locking nuts.

8. The concrete mixer discharge structure according to claim 1, characterized in that: The inner wall of the movable outer cylinder is fitted with a sealing ring.

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