Mixing machine hopper cover positioning and locking structure

Abstract

The utility model provides a mixing machine hopper cover positioning locking structure, which comprises a mixing machine frame and a stirring assembly, the stirring assembly is arranged on a hopper cover, the hopper cover comprises an upper cover and a lower sealing part which are connected with each other, an upper inflation sealing ring and a lower inflation sealing ring are arranged on the circumference of the outer side surface of the lower sealing part, and the upper cover and the lower sealing part are connected with each other. The maximum diameter of the lower sealing part of the hopper cover is not greater than the caliber of the hopper; when the device is used, firstly, the upper inflation sealing ring is inflated, the hopper cover which is not concentric with a hopper opening is straightened and centered, and after the hopper cover is straightened, the lower inflation sealing ring is inflated, so that the sealing and locking effects are achieved; according to the technical scheme, through the double-inflation sealing ring structure, centering and sealing of the hopper cover and the hopper of the mixing machine are achieved, and the sealing effect of the lower inflation sealing ring can be ensured through first inflation and second inflation; the device is exquisite in structure, convenient to operate and reliable in work, the main structure basically adopts an assembly type structure, and disassembly, installation and maintenance are convenient.

Description

Technical Field

[0001] This utility model relates to the field of hopper docking technology, specifically a positioning and locking structure for a mixer hopper cover. Background Technology

[0002] When the automatic lifting mixer is working, the hopper containing the material needs to be placed in the mixer frame first. As the frame is automatically lifted, it is finally positioned and locked with the hopper cover. During the lifting process, the mixer holds the hopper with the rotating frame and rotates along the mixing rotation axis to achieve mixing of the material in the hopper. Therefore, a reliable positioning and locking mechanism is required to fix the hopper cover on the hopper to meet the mixing requirements.

[0003] Since the hopper cover of the mixer equipped with the stirring component is not easy to replace, and the diameter of the hopper often has a slight error during processing, and the lifting mechanism of the automatic lifting mixer cannot completely ensure that the hopper opening and the hopper cover are perfectly concentric when lifting the hopper, in order to ensure that the hopper cover of the mixer and each hopper on the lifting mechanism can be sealed well, the applicant has designed a hopper cover positioning and locking structure that can achieve calibration and centering when assembling the hopper and the hopper cover, and can also seal at the same time. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide a positioning and locking structure for a mixer hopper cover. The technical solution adopted by this utility model is as follows:

[0005] A positioning and locking structure for a mixer hopper cover includes a mixer frame and a mixing assembly. The mixing assembly is mounted on the hopper cover, and the mixing blade component in the mixing assembly is located below the hopper cover. The hopper cover includes an upper cover and a lower sealing part connected to each other. An upper air-filled sealing ring and a lower air-filled sealing ring are circumferentially arranged on the outer side of the lower sealing part. The maximum diameter of the lower sealing part of the hopper cover is not greater than the diameter of the hopper opening.

[0006] Preferably, the frame uses a lifting assembly to raise and lower the hopper relative to the hopper cover. During assembly, the relative height between the hopper cover and the frame remains constant. The frame is connected to the hopper cover by at least three steel cables, which are evenly distributed around the circumference of the hopper cover to ensure stability of the hopper cover during docking with the hopper. At the same time, the steel cables connecting the hopper cover allow for movement during assembly, accommodating any misalignment between the hopper and the hopper cover caused by assembly errors of the lifting mechanism and the hopper.

[0007] Preferably, the diameter of the upper cover of the hopper cover is larger than the diameter of the lower sealing part, so that the outer edge of the upper cover protrudes from the lower sealing part and covers the hopper opening, so that the hopper cover is vertically positioned when it is connected to the hopper.

[0008] Preferably, a sealing gasket is provided on the lower surface of the flange protruding from the upper cover of the lower sealing part. The upper end of the sealing gasket is embedded in the positioning groove on the lower surface of the flange. The hopper opening extends outward to form an annular plane. The lower end of the sealing gasket protrudes from the lower surface of the flange and abuts against the upper surface of the annular plane.

[0009] Preferably, the hopper includes a neck and an expansion portion extending downward from the neck; the height of the neck is less than the height of the lower sealing portion, so that the lower inflatable sealing ring at least partially seals against the inner wall of the expansion portion; the upper inflatable sealing ring and the lower inflatable sealing ring are respectively embedded in the first annular groove and the second annular groove of the lower sealing portion.

[0010] The beneficial effects of this utility model are as follows: When using this device, the upper inflatable sealing ring is first inflated to align and center the hopper cover, which is not concentric with the hopper opening. After the hopper cover is aligned, the lower inflatable sealing ring is inflated to achieve sealing and locking. This technical solution achieves centering and sealing between the mixer hopper cover and the hopper through a double-inflated sealing ring structure, and the first and second inflations ensure the sealing effect of the lower inflatable sealing ring. This device has a compact structure, is easy to operate, and is reliable in operation. The main structure is basically an assembled structure, which is convenient for disassembly, installation, and maintenance. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0012] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0013] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0014] Figure 3 for Figure 2 Enlarged view at point B in the middle;

[0015] Figure 4 This is a top view of the overall structure of Example 1;

[0016] In the figure, 1-hopper cover, 101-upper air-filled sealing ring, 102-lower air-filled sealing ring, 11-upper cover, 111-sealing gasket, 112-flange, 12-lower sealing part, 121-first annular groove, 122-second annular groove, 2-frame, 21-steel cable, 3-hopper, 31-neck, 32-expansion part, 33-annular plane. Detailed Implementation

[0017] To make the objectives, technical solutions and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings.

[0018] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0019] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0020] Example 1

[0021] like Figure 1-4 As shown, a positioning and locking structure for a mixer hopper cover includes a mixer frame 2 and a stirring assembly. The stirring assembly is mounted on the hopper cover 1, and the stirring blade component in the stirring assembly is located below the hopper cover 1. The hopper cover 1 includes an upper cover 11 and a lower sealing part 12 connected to each other. The outer side of the lower sealing part 12 is provided with an upper air-filled sealing ring 101 and a lower air-filled sealing ring 102. The maximum diameter of the lower sealing part 12 of the hopper cover 1 is not greater than the opening diameter of the hopper 3.

[0022] After the lifting assembly of the mixer fixes the hopper, the lower sealing part of the hopper cover is positioned in the hopper opening. The stirring blade component extends into the hopper. First, the upper air-filled sealing ring is inflated to straighten and center the hopper cover, which is not concentric with the hopper opening. After the hopper cover is straightened, the lower air-filled sealing ring is inflated to achieve a sealing and locking effect. This technical solution achieves centering and sealing between the mixer hopper cover and the hopper through a double-inflated sealing ring structure. Furthermore, the first and second inflations ensure the sealing effect of the lower air-filled sealing ring.

[0023] The frame 2 drives the hopper 3 to rise and fall relative to the hopper cover 1 via a lifting assembly. During assembly, the relative height between the hopper cover and the frame 2 remains constant. The frame 2 is connected to the hopper cover 1 by at least three steel cables 21, which are evenly distributed around the circumference of the hopper cover 1 to ensure the stability of the hopper cover during docking with the hopper. At the same time, the steel cables connecting the hopper cover provide room for movement during assembly, accommodating the misalignment of the hopper and the hopper cover in vertical position caused by assembly errors of the lifting mechanism and the hopper.

[0024] The diameter of the upper cover 11 of the hopper cover 1 is larger than the diameter of the lower sealing part 12, so that the outer edge of the upper cover 11 protrudes from the lower sealing part 12 and covers the opening of the hopper 3, so that the hopper cover 1 is vertically positioned when it is connected to the hopper.

[0025] The upper cover 11 protrudes from the lower surface of the flange 112 of the lower sealing part 12 and is provided with a sealing gasket 111. The upper end of the sealing gasket 111 is embedded in the positioning groove on the lower surface of the flange 112. The hopper opening of the hopper 3 extends outward to form an annular plane 33. The lower end of the sealing gasket 111 protrudes from the lower surface of the flange 112 and abuts against the upper surface of the annular plane 33.

[0026] The hopper 3 includes a neck 31 and an expansion portion 32 extending downward from the neck 31; the height of the neck 31 is less than the height of the lower sealing portion 12, so that the lower inflatable sealing ring 102 at least partially seals against the inner wall of the expansion portion 32; the upper inflatable sealing ring 101 and the lower inflatable sealing ring 102 are respectively embedded in the first annular groove 121 and the second annular groove 122 of the lower sealing portion 12, so that the inflatable sealing ring retracts into the annular groove when not inflated, avoiding wear and aging.

[0027] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A positioning and locking structure for a mixer hopper cover, comprising a mixer frame (2) and a stirring assembly, wherein the stirring assembly is mounted on the hopper cover (1), and the stirring blade component of the stirring assembly is located below the hopper cover (1), characterized in that: The hopper cover (1) includes an upper cover (11) and a lower sealing part (12) connected to each other. The outer side of the lower sealing part (12) is provided with an upper air-filled sealing ring (101) and a lower air-filled sealing ring (102). The maximum diameter of the lower sealing part (12) of the hopper cover (1) is not greater than the diameter of the hopper (3).

2. The positioning and locking structure for a mixer hopper cover according to claim 1, characterized in that: The frame (2) drives the hopper (3) to rise and fall relative to the hopper cover (1) via the lifting assembly.

3. The positioning and locking structure for a mixer hopper cover according to claim 2, characterized in that: The frame (2) is connected to the hopper cover (1) by at least three steel cables (21), and the at least three steel cables (21) are evenly distributed around the circumference of the hopper cover (1).

4. The positioning and locking structure for a mixer hopper cover according to claim 1, characterized in that: The diameter of the upper cover (11) of the hopper cover (1) is larger than the diameter of the lower sealing part (12), so that the outer edge of the upper cover (11) protrudes out of the lower sealing part (12) and covers the opening of the hopper (3).

5. The positioning and locking structure for a mixer hopper cover according to claim 4, characterized in that: The upper cover (11) is provided with a sealing gasket (111) on the lower surface of the flange (112) of the lower sealing part (12).

6. The positioning and locking structure for a mixer hopper cover according to claim 5, characterized in that: The upper end of the sealing gasket (111) is embedded in the positioning groove on the lower surface of the flange (112), the hopper opening of the hopper (3) extends outward to form an annular plane (33), and the lower end of the sealing gasket (111) protrudes from the lower surface of the flange (112) and abuts against the upper surface of the annular plane (33).

7. The positioning and locking structure for a mixer hopper cover according to claim 1, characterized in that: The hopper (3) includes a neck (31) and an expansion portion (32) extending downward from the neck (31); the height of the neck (31) is less than the height of the lower sealing portion (12), so that the lower inflatable sealing ring (102) at least partially seals against the inner wall of the expansion portion (32).

8. The positioning and locking structure for a mixer hopper cover according to claim 7, characterized in that: The upper inflatable sealing ring (101) and the lower inflatable sealing ring (102) are respectively embedded in the first annular groove (121) and the second annular groove (122) of the lower sealing part (12).

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