A concrete mixer discharging structure

Abstract

This utility model relates to the technical field of concrete mixing equipment, specifically to a discharge structure for a concrete mixer; it includes a discharge pipe, a gate, a handle, a hinge, and a locking device; the discharge pipe is located at the bottom of the mixing drum of the concrete mixer; the gate has an L-shaped structure, with its upper end hinged to the side of the mixing drum near the discharge pipe via a hinge, and its lower end fastened to the opening of the discharge pipe; the handle is fixedly connected to the left end face of the gate; one end of the locking device is hinged to the handle, and the other end is engaged with the side wall of the mixing drum to limit the position of the handle. With this utility model, the operator drives the gate to rotate by operating the handle, opening or closing the discharge pipe. When closed, the locking device limits the position of the handle, thereby positioning the gate and preventing vibrations from causing the gate to loosen and leak material from the discharge pipe. The annular groove and the circular tube opening of this utility model form a 360° circumferential seal, reducing leakage compared to traditional planar seals.

Description

Technical Field

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

[0002] In concrete mixing equipment, the discharge structure is the component that enables the unloading of concrete after mixing. Traditional discharge structures typically use gate valves or butterfly valves, with the gate opening and closing controlled manually or mechanically to control the discharge pipe. However, existing technologies suffer from insufficient sealing. Due to the strong vibrations during operation of concrete mixing equipment, concrete leakage can easily occur between the gate and the discharge pipe opening due to gaps or inadequate sealing. Although some discharge structures are equipped with locking devices, these devices are unreliable and may loosen due to vibration or other factors, leading to concrete leakage.

[0003] Therefore, it is of great significance to develop a discharge structure for a concrete mixer that can effectively solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a discharge structure for a concrete mixer. By using a sealing structure and a locking device, it solves the problems of poor sealing performance and insufficient reliability of the locking device in existing discharge structures, thereby resolving the technical problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a discharge structure for a concrete mixer, comprising a discharge pipe, a gate, a handle, a hinge, and a locking device; the discharge pipe is disposed at the bottom of the mixing drum of the concrete mixer; the gate is an L-shaped structure, with its upper end hinged to the side of the mixing drum near the discharge pipe via a hinge, and its lower end fastened to the opening of the discharge pipe; the handle is fixedly connected to the left end face of the gate; one end of the locking device is hinged to the handle, and the other end is engaged with the side wall of the mixing drum to limit the position of the handle.

[0006] Furthermore, the locking device includes a locking rod, a limiting groove, and a limiting screw; the limiting groove is an upward-opening groove, located on the side wall of the mixing tank and above the hinge, with the opening direction facing the rotation direction of the locking rod; the lower end of the locking rod is hinged to the handle, and the upper end can be inserted into the limiting groove; the limiting groove has a through hole opened laterally, and the limiting screw passes through the through hole and can lock the upper end of the locking rod.

[0007] Furthermore, a guide slope is provided at the opening of the limiting groove to guide the upper end of the locking rod into the limiting groove.

[0008] Furthermore, it also includes a sealing structure; the sealing structure includes a sealing gasket disposed on the gate plate, the sealing gasket having an annular groove; the discharge pipe opening is a circular tube structure, the shape and size of the annular groove matching the opening.

[0009] Furthermore, a reinforcing rib is provided between the gate and the handle to enhance the connection strength.

[0010] Beneficial effects

[0011] The operator of this utility model drives the gate to rotate via a handle, opening or closing the discharge pipe. When open, concrete flows out from the outlet under its own weight; when closed, a locking device limits the position of the handle, thereby positioning the gate and preventing vibrations from causing the gate to loosen and leak material from the discharge pipe.

[0012] The annular groove of the sealing gasket of this utility model fits with the circular tube opening to form a 360° full circumference seal, which reduces leakage compared with traditional planar seals. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of the material discharge structure disclosed in this utility model;

[0015] Figure 2 This is a partial structural schematic diagram of the material discharge structure disclosed in this utility model;

[0016] Figure 3 This is a schematic diagram of the closed state structure of the material discharge structure disclosed in this utility model;

[0017] Figure 4 This is a schematic diagram of the open state of the material discharge structure disclosed in this utility model.

[0018] In the picture:

[0019] 1-Discharge pipe, 2-gate, 3-handle, 4-hinge, 5-locking device, 51-locking rod, 52-limiting groove, 53-limiting screw, 54-guide slope, 6-sealing gasket, 61-circular groove, 7-reinforcing rib. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To achieve the above objectives, this utility model provides the following technical solution, such as... Figure 1-4 As shown, a discharge structure for a concrete mixer includes a discharge pipe 1, a gate 2, a handle 3, a hinge 4, and a locking device 5.

[0022] The discharge pipe 1 is installed at the bottom of the mixing drum of the concrete mixer as a channel for discharging concrete.

[0023] The gate 2 has an L-shaped structure. The upper end of the gate 2 is hinged to the side of the mixing tank of the mixer near the discharge pipe 1 via a hinge 4. The hinge 4 provides a pivot point for the gate 2, allowing the gate 2 to move in an arc around the axis of the hinge 4 to achieve the opening and closing action. The lower end of the gate 2 can be fastened to the opening of the discharge pipe 1.

[0024] The handle 3 is used to control the movement of the gate 2 and is fixedly connected to the left end face of the gate 2 to form a rigid whole with the gate 2;

[0025] One end of the locking device 5 is hinged to the handle 3, and the other end is clamped to the side wall of the mixing tank of the mixer to limit the position of the handle 3 and prevent the gate 2 from loosening and causing the discharge pipe 1 to leak.

[0026] In use, the operator drives the gate 2 to rotate around the hinge 4 by operating the handle 3, thus opening or closing the discharge pipe 1. When open, the concrete flows out from the outlet under its own weight; when closed, the locking device 5 limits the position of the handle 3 to prevent the gate 2 from loosening and causing leakage from the discharge pipe 1.

[0027] Furthermore, the locking device 5 includes a locking rod 51, a limiting groove 52, and a limiting screw 53;

[0028] The limiting groove 52 is a groove-shaped structure with an upward opening, which is set on the side wall of the mixing tank, above the hinge 4, and the opening direction of the limiting groove 52 faces the rotation direction of the locking rod 51.

[0029] The lower end of the locking rod 51 is hinged to the handle 3, the upper end of the locking rod 51 can rotate relative to the handle 3, and the upper end of the locking rod 51 can be engaged in the limiting groove 52.

[0030] The limiting groove 52 has a through hole along the transverse direction, and the limiting screw 53 passes through the through hole. When the upper end of the locking rod 51 is engaged in the limiting groove 52, the limiting screw 53 can pass through the through hole to lock the upper end of the locking rod 51. The through hole has an internal thread, which forms a threaded engagement with the limiting screw 53.

[0031] At this time, the upper end of the locking rod 51 is engaged in the limiting groove 52, and the top of the locking rod 51 abuts against the side wall of the mixing tank of the mixer. The locking rod 51, the handle 3, and the side wall of the mixing tank form a stable triangular structure, thereby locking the position of the locking rod 51, the handle 3, and the gate 2. At this time, the position of the gate 2 is exactly to close the opening of the discharge pipe 1. Even if there is strong vibration during operation, the position of the locking rod 51 is locked under the limitation of the limiting screw 53 to prevent the gate 2 from loosening due to vibration. The locking device 5, through the engagement of the locking rod 51 with the limiting groove 52, generates a downward mechanical pressing force on the handle 3, further squeezing the sealing gasket 6 on the gate 2, making the sealing gasket 6 fit more closely to the discharge pipe 1, and enhancing the sealing reliability.

[0032] Furthermore, a guide slope 54 is provided on the opening of the limiting groove 52; the guide slope 54 enlarges the entrance size of the limiting groove 52, guiding the upper end of the locking rod 51 to slide smoothly into the groove;

[0033] Furthermore, it also includes a sealing structure: a circular rubber sealing gasket 6 is disposed on the gate 2, and the sealing gasket 6 has an annular groove 61 at its end; the corresponding outlet of the discharge pipe 1 is a circular tubular structure; the shape and size of the annular groove 61 on the sealing gasket 6 match the outlet of the discharge pipe 1; the annular groove 61 and the outlet of the discharge pipe 1 form an interference fit, using the elastic deformation of rubber to fill the gap, achieving a 360° full circumference seal. When the gate 2 is in the closed state, the sealing gasket 6 can be fastened to the outlet of the discharge pipe 1 to seal the outlet, preventing concrete leakage and ensuring the sealing performance when closed. The sealing gasket 6 adopts a detachable design, so the entire discharge structure does not need to be disassembled for replacement.

[0034] Furthermore, a reinforcing rib 7 is provided between the gate 2 and the handle 3, and the reinforcing rib 7 has a triangular rib structure.

[0035] The working principle and process are as follows:

[0036] When the discharge pipe 1 is opened, the operator holds the handle 3 and pulls it upward, driving the gate 2 to rotate clockwise around the hinge 4, so that the lower end of the gate 2 moves away from the opening of the discharge pipe 1, and the concrete flows out from the opening under its own gravity.

[0037] When the discharge pipe 1 is closed, the operating handle 3 pushes the gate 2 to rotate counterclockwise until the sealing gasket 6 on the gate 2 engages with the opening of the discharge pipe 1. At this time, rotate the locking rod 51 to the front of the limiting groove 52, and continue to push the locking rod 51 so that the upper end of the locking rod 51 slides into the groove along the guide slope 54 of the opening of the limiting groove 52, completing the initial engagement. Then, screw in the limiting screw 53 to lock the locking rod 51 in the limiting groove 52, ensuring that the gate 2 is fixed in position and achieving a sealed lock.

[0038] When unlocking is required, unscrew the limit screw 53 in the opposite direction, pull the locking rod 51 upward to disengage it from the limit groove 52, and then drive the gate 2 to open via the handle 3.

[0039] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A discharge structure for a concrete mixer, characterized in that, The system includes a discharge pipe (1), a gate (2), a handle (3), a hinge (4), and a locking device (5). The discharge pipe (1) is located at the bottom of the mixing drum of the concrete mixer. The gate (2) is an L-shaped structure, with its upper end hinged to the side of the mixing drum near the discharge pipe (1) via the hinge (4), and its lower end fastened to the opening of the discharge pipe (1). The handle (3) is fixedly connected to the left end face of the gate (2). One end of the locking device (5) is hinged to the handle (3), and the other end is clamped to the side wall of the mixing drum to limit the position of the handle (3). The locking device (5) includes a locking rod (51), a limiting groove (52), and a limiting screw (53); the limiting groove (52) is an upward-opening groove, located on the side wall of the mixing tank and above the hinge (4), with the opening direction facing the rotation direction of the locking rod (51); the lower end of the locking rod (51) is hinged to the handle (3), and the upper end can be inserted into the limiting groove (52); the limiting groove (52) has a through hole opened laterally, and the limiting screw (53) passes through the through hole and can lock the upper end of the locking rod (51).

2. The material discharge structure according to claim 1, characterized in that, The opening of the limiting groove (52) is provided with a guide slope (54) for the upper end of the guide locking rod (51) to slide into the limiting groove (52).

3. The material discharge structure according to claim 1, characterized in that, It also includes a sealing structure; the sealing structure includes a sealing gasket (6) disposed on the gate (2), the sealing gasket (6) having an annular groove (61); the discharge pipe (1) has a circular tube structure at the opening, and the shape and size of the annular groove (61) match the opening.

4. The material discharge structure according to claim 1, characterized in that, A reinforcing rib (7) is provided between the gate (2) and the handle (3) to enhance the connection strength.

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