CN210850794U

CN210850794U - Concrete mixer

Info

Publication number: CN210850794U
Application number: CN201921300863.5U
Authority: CN
Inventors: 王海龙; 郭瑛; 蒋兴北
Original assignee: Sanhe Xinghai Concrete Co ltd
Current assignee: Sanhe Xinghai Concrete Co ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-06-26
Anticipated expiration: 2029-08-12

Abstract

The utility model provides a concrete mixer, which comprises a mixing cavity with a feeding port, a discharging port and a water inlet pipe, wherein a mixing shaft is arranged in the mixing cavity; the shaft ends at the two ends of the stirring shaft penetrate through the outer wall of the stirring cavity and are supported in the bearing block, so that the stirring shaft can rotate under the drive of the motor. A stirring shaft of the stirrer is provided with a plurality of groups of stirring blades, a connecting rod, a crushing rod and two helical blades. The stirring pieces and the connecting rods are uniformly distributed at intervals along the axial direction of the stirring shaft; the connecting rod is orthogonal to the stirring shaft and is fixedly connected between the stirring shaft and the stirring sheet; the two stirring sheets and the two connecting rods in the same group are centrosymmetric relative to the axis. The crushing rod is arranged between the two adjacent groups of connecting rods and is fixedly connected to the stirring shaft. Two helical blades extend spirally around the stirring shaft along the axis direction and are fixedly connected with the connecting rod and the crushing rod respectively. The utility model discloses a concrete mixer can improve the whole stirring effect and the use strength of (mixing) shaft.

Description

Concrete mixer

Technical Field

The utility model relates to a concrete mixing technical field, in particular to concrete mixer.

Background

The concrete mixer is a machine for mixing cement, sand aggregate, water and the like into concrete, mainly comprises a mixing cavity, a motor, a speed reducer and the like, wherein a feeding port, a discharging port and a water inlet pipe are arranged on the mixing cavity, and a mixing shaft is arranged in the mixing cavity. The material gets into in the cavity through the pan feeding mouth to add water through the inlet tube, under motor drive, the (mixing) shaft is rotatory to be mixed material and water stirring, makes the concrete and discharges from the discharge opening.

The existing concrete stirrer is simple in structure of a stirring shaft, and the arrangement of each stirring part on the shaft is not reasonable enough, so that the stirring efficiency of concrete is low, and the condition that each stirring part on the shaft is deformed or damaged and falls easily occurs, and the stirring effect and the service life of the stirring shaft are seriously influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a concrete mixer to improve the overall mixing effect and the service life of the mixing shaft.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a concrete mixer comprises a mixing cavity with a feeding opening, a discharging opening and a water inlet pipe, wherein a mixing shaft is arranged in the mixing cavity; the shaft ends at two ends of the stirring shaft penetrate through the outer wall of the stirring cavity and are supported in the bearing block, so that the stirring shaft can rotate under the driving of a motor; the stirring shaft is provided with:

a plurality of groups of stirring blades and a plurality of groups of connecting rods, which are two groups, are uniformly distributed at intervals along the axial direction of the stirring shaft; the connecting rod is orthogonal to the stirring shaft and is fixedly connected between the stirring shaft and the stirring sheet; the two stirring sheets and the two connecting rods in the same group are centrosymmetric relative to the axis;

a plurality of groups of two crushing rods which are a group are arranged between two adjacent groups of the connecting rods and are fixedly connected to the stirring shaft; the two crushing rods in the same group are orthogonal to the stirring shaft and are centrosymmetric relative to the axis;

and the two helical blades spirally extend around the stirring shaft along the axis direction and are fixedly connected with one of the connecting rods of each group and one of the crushing rods of each group respectively.

Furthermore, the stirring sheet is plate-shaped, and the stirring sheet and the connecting rod which are connected with each other are arranged in the same plane.

Furthermore, an included angle of 30-45 degrees is formed between the plane where the stirring sheet is located and the plane perpendicular to the axis.

Furthermore, the side edge of the stirring sheet close to the inner wall of the stirring cavity is arc-shaped.

Further, two adjacent groups of the connecting rods are perpendicular to each other.

Further, the distance between the crushing rod and the two adjacent groups of connecting rods is equal.

Furthermore, an included angle of 45 degrees is formed between the crushing rod and the connecting rod in the adjacent group.

Further, the helical blades between the connecting rods and the crushing rods of adjacent groups are connected between the connecting rods and the crushing rods with an included angle of 135 degrees.

Further, the crushing rod is in a cone shape.

Further, the stirring shaft and the connecting rod, the connecting rod and the stirring sheet, the crushing rod and the stirring shaft, and the helical blade and the connecting rod and the crushing rod are all welded and fixedly connected.

Compared with the prior art, the utility model discloses following advantage has:

concrete mixer, two are a set of stirring piece and broken pole staggered arrangement on the (mixing) shaft to link firmly each broken pole and connecting rod in proper order through helical blade, not only can improve the (mixing) shaft and to the stirring effect of concrete in stirring the cavity, form mutual support moreover between connecting rod, broken pole and helical blade, thereby improved the life of (mixing) shaft.

In addition, adopt platelike stirring piece to make the stirring piece link firmly on the connecting rod, make and not have the contained angle between the two, thereby can make the stirring piece have great stirring working face, in order to promote the stirring effect. The stirring blades form a certain inclination angle on the vertical section of the axial line, so that the rotating resistance of the stirring shaft can be reduced, and the stirring effect of stirring the stirred concrete can be achieved.

Drawings

The accompanying drawings, which form a part of the present disclosure, are provided to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions thereof are provided to explain the present disclosure, wherein the related terms in the front, back, up, down, and the like are only used to represent relative positional relationships, and do not constitute an undue limitation of the present disclosure. In the drawings:

FIG. 1 is a schematic view of an overall cross-sectional structure of a concrete mixer according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of a section of the stirring shaft according to the embodiment of the present invention;

FIG. 3 is a schematic view of the stirring shaft according to the embodiment of the present invention in an axial view;

description of reference numerals:

1-stirring cavity, 2-feeding port, 3-discharging port, 301-discharging valve, 4-speed reducer, 5-motor, 6-water inlet valve, 601-water inlet pipe, 602-water spray head, 7-stirring shaft, 701-shaft end, 702-bearing seat;

801-stirring blade, 802-connecting rod, 803-crushing rod and 804-helical blade.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, terms of left, right, up, down, and the like are used for convenience of description and are based on terms in the illustrated state, and should not be construed as limiting the structure of the present invention; references to first, second, third, etc. are also made for ease of description and are not to be construed as indicating or implying relative importance.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to a concrete mixer, which can improve the overall mixing effect and prolong the service life of a mixing shaft. The concrete stirrer comprises a stirring cavity with a feeding opening, a discharging opening and a water inlet pipe, wherein a stirring shaft is arranged in the stirring cavity; the shaft ends at the two ends of the stirring shaft penetrate through the outer wall of the stirring cavity and are supported in the bearing block, so that the stirring shaft can rotate under the driving of a motor. The stirring shaft is provided with two groups of stirring blades and connecting rods, two groups of crushing rods and two helical blades. The stirring blades and the connecting rods are uniformly distributed at intervals along the axial direction of the stirring shaft; the connecting rod is orthogonal to the stirring shaft and is fixedly connected between the stirring shaft and the stirring sheet; the two stirring sheets and the two connecting rods in the same group are centrosymmetric relative to the axis. The crushing rods are arranged between two adjacent groups of the connecting rods and are fixedly connected to the stirring shaft; the two crushing rods in the same group are orthogonal to the stirring shaft and are centrosymmetric relative to the axis; the two helical blades extend spirally around the stirring shaft along the axis direction and are fixedly connected with one of the connecting rods of each group and one of the crushing rods of each group respectively.

Based on the general structural principle, an exemplary structure of the concrete mixer of the embodiment is shown in fig. 1, and includes a mixing chamber 1, a speed reducer 4 and a motor 5. A feeding port 2, a discharging port 3 and a water inlet pipe 601 are arranged on the stirring cavity 1, and a stirring shaft 7 is arranged in the stirring cavity 1; the shaft ends 701 at the two ends of the stirring shaft 7 penetrate through the outer wall of the stirring cavity 1 and are supported in the bearing seat 702, so that the stirring shaft 7 can rotate under the driving of the motor 5.

The feeding port 2 is used for feeding cement and gravel aggregate; the speed reducer 4 is arranged between the motor 5 and the stirring shaft 7 in a transmission manner to realize speed reduction transmission. The water inlet pipe 601 can introduce water to be mixed with cement sand; the concrete formed by the final mixing is discharged from the discharge opening 3.

Specifically, as shown in fig. 1, a cylindrical stirring shaft 7 is horizontally disposed in the stirring chamber 1, and both ends of the stirring shaft 7 are shaft ends 701. Relative to the main part of the middle part of the stirring shaft 7, the shaft end 701 can be equal in diameter and the main part, and can also be reduced in diameter relative to the main part. The shaft end 701 penetrates through the outer wall of the stirring cavity 1, a bearing seat 702 is installed at a corresponding position, a bearing is installed in the bearing seat 702, and the shaft ends 701 at two ends of the stirring shaft 7 are all supported in the bearing. As shown in fig. 1, the shaft end 701 on the left side is installed in the speed reducer 4 through the bearing seat 702, so that the speed reducer 4 constitutes a transmission connection of the motor 5 to the stirring shaft 7. Obviously, the speed reducer 4 and the motor 5 are both fixedly disposed relative to the stirring cavity 1, and generally, the speed reducer 4 and the motor 5 can be fixedly mounted on the housing of the stirring cavity 1.

As shown in fig. 1, the water inlet pipe 601 penetrates through the outer wall of the stirring cavity 1 and enters the inside of the stirring cavity 1, a water spray head 602 may be installed at the end of the water inlet pipe 601 located inside the stirring cavity 1 to spray the entering water uniformly, and a water inlet valve 6 may be installed on the water inlet pipe 601 to control the addition of water.

Can install discharge valve 301 additional in discharge opening 3 department to control stirring cavity 1's unloading, when the stirring is accomplished, can open discharge valve 301, make things convenient for the concrete to discharge to stirring cavity 1's outside.

In order to improve the stirring effect and the service life of the stirring shaft 7, the stirring shaft 7 of the present embodiment is provided with stirring blades 801, a connecting rod 802, a crushing rod 803 and helical blades 804.

As shown in fig. 1 in combination with fig. 2 and fig. 3, two connecting rods 802 are used as a set, and a plurality of sets of connecting rods 802 are uniformly distributed on the outer peripheral sidewall of the stirring shaft 7 at intervals along the axial direction of the stirring shaft 7; meanwhile, two stirring pieces 801 are taken as a group, and each stirring piece 801 is fixedly connected with one connecting rod 802, so that the connecting rods 802 are arranged on the stirring shaft 7; each set of connecting rods 802 corresponds to each set of stirring blades 801 and is arranged at the same position along the axial direction of the stirring shaft 7. The connecting rod 802 is fixedly connected between the stirring shaft 7 and the stirring blades 801, preferably, the connecting rod 802 is orthogonal to the stirring shaft 7, and the two stirring blades 801 and the two connecting rods 802 in the same group are arranged in central symmetry relative to the axis of the stirring shaft 7, so as to improve the rotation balance of the stirring shaft 7.

The crushing rods 803 on the stirring shaft 7 are also two in one group, and a plurality of groups of crushing rods 803 are arranged on the stirring shaft 7 and are used for crushing agglomerates in the materials. Each group of crushing rods 803 is arranged between two adjacent groups of connecting rods 802 and is fixedly connected to the stirring shaft 7; the two crushing rods 803 of the same set are orthogonal to the stirring shaft 7 and are centrosymmetric with respect to the axis of the stirring shaft 7.

The number of the helical blades 804 is two, which are provided on the stirring shaft 7. The two helical blades 804 extend spirally around the stirring shaft 7 along the axial direction of the stirring shaft 7, and are fixedly connected with one of the groups of connecting rods 802 and one of the groups of crushing rods 803 respectively. Specifically, each group of connecting rods 802 and each group of crushing rods 803 on the stirring shaft 7 are arranged in a staggered manner in the axial direction, and as shown in fig. 1, from left to right, a group of connecting rods 802, a group of crushing rods 803, a group of connecting rods 802, and a group of crushing rods 803, … … are arranged on the stirring shaft 7. The helical blades 804 spirally extending along the axial direction of the stirring shaft 7 around the stirring shaft 7 sequentially intersect with one connecting rod 802, one crushing rod 803, … …; another helical blade 804 intersects another connecting rod 802, another breaker rod 803, … … in sequence in a set. Due to the design, the stirring blades 801, the connecting rods 802, the crushing rods 803 and the spiral blades 804 on the stirring shaft 7 are fixedly connected with one another to form mutual support, so that the overall strength of the stirring shaft 7 is improved, and the service life of the stirring shaft 7 is prolonged.

As shown in fig. 2, the stirring blade 801 is fixedly mounted on one end of the connecting rod 802, preferably, the stirring blade 801 is plate-shaped, and the connected stirring blade 801 and the connecting rod 802 are disposed in the same plane. So that no included angle exists between the stirring blades and the stirring plate, and the stirring blade 801 has a larger stirring working surface to improve the stirring effect. In order to make the side edge of the stirring blade 801 close to the inner wall of the stirring cavity 1 more fit with the inner wall of the stirring cavity 1, the side edge may be arc-shaped.

The inclination angle of the stirring blades 801 can be selected in many ways, but in view of reducing the rotation resistance of the stirring shaft 7 and making the stirring blades 801 have a stirring effect on the stirred concrete, in the embodiment, the stirring blades 801 are preferably arranged so that the plane in which the stirring blades 801 are arranged and the plane perpendicular to the axis form an included angle of 30 ° to 45 °.

As shown in fig. 2 and 3, due to the centrosymmetric arrangement, the two connecting rods 802 in the same group are located on the same straight line, as are the two breaker rods 803 in the same group. For improving the overall structure of (mixing) shaft 7, promote stirring effect to do benefit to helical arrangement of helical blade 804, two sets of adjacent connecting rod 802 mutually perpendicular set up, and the impartial setting of distance between crushing pole 803 and two sets of adjacent connecting rod 802 is more than being 45 contained angles setting between crushing pole 803 of adjacent group and the connecting rod 802. It should be noted that, in two adjacent groups of the connecting rods 802 and the crushing rods 803, the first connecting rod 802 forms an angle of 45 ° with the first crushing rod 803, and the second connecting rod 802 (located at the back side of the stirring shaft 7 relative to the first connecting rod 802) forms an angle of 135 ° with the first crushing rod 803; similarly, the second breaker bar 803 is also angled 135 ° from the first connector bar 802.

Thus, a section of the helical blade 804 between the adjacent set of the connecting rods 802 and the set of the breaking rods 803 can be selected differently, and preferably, the helical blade 804 is connected between the connecting rods 802 and the breaking rods 803 with an included angle of 135 °, so that the overall length of the helical blade 804 is lengthened, and the stirring effect thereof is improved.

The crushing rod 803 may be designed to have a cylindrical or rectangular parallelepiped shape, and in this embodiment, the crushing rod 803 has a conical shape.

The connecting forms between the stirring shaft 7 and the connecting rod 802, between the connecting rod 802 and the stirring sheet 801, between the crushing rod 803 and the stirring shaft 7, and between the helical blade 804 and the connecting rod 802 and the crushing rod 803 are various, and the stirring shaft can be integrally constructed or screwed, and can also adopt a welding and connecting mode.

Adopt the concrete mixer of above-mentioned embodiment, its (mixing) shaft 7 reasonable in design, two are a set of stirring piece 801 and broken pole 803 staggered arrangement on (mixing) shaft 7, and link firmly each broken pole 803 and connecting rod 802 in proper order through helical blade 804, not only can improve the stirring effect of (mixing) shaft 7 to the concrete in stirring cavity 1, form mutual support moreover between connecting rod 802, broken pole 803 and helical blade 804, thereby the service strength of (mixing) shaft 7 has been improved, the life of (mixing) shaft 7 has been improved.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A concrete mixer comprises a mixing cavity (1) with a feeding port (2), a discharging port (3) and a water inlet pipe (601), wherein a mixing shaft (7) is arranged in the mixing cavity (1); shaft ends (701) at two ends of the stirring shaft (7) penetrate through the outer wall of the stirring cavity (1) and are supported in the bearing seat (702), so that the stirring shaft (7) can rotate under the driving of the motor (5); it is characterized in that the stirring shaft (7) is provided with:

a plurality of groups of stirring blades (801) and a plurality of groups of connecting rods (802) which are two groups are uniformly distributed at intervals along the axial direction of the stirring shaft (7); the connecting rod (802) is orthogonal to the stirring shaft (7) and fixedly connected between the stirring shaft (7) and the stirring sheet (801); the two stirring sheets (801) and the two connecting rods (802) in the same group are centrosymmetric relative to the axis;

a plurality of groups of two crushing rods (803) which are a group are arranged between two adjacent groups of connecting rods (802) and are fixedly connected to the stirring shaft (7); the two crushing rods (803) in the same group are orthogonal to the stirring shaft (7) and are centrosymmetric relative to the axis;

and the two helical blades (804) spirally extend around the stirring shaft (7) along the axis direction and are fixedly connected with one of the connecting rods (802) of each group and one of the crushing rods (803) of each group respectively.

2. The concrete mixer of claim 1, wherein: the stirring sheet (801) is plate-shaped, and the connected stirring sheet (801) and the connecting rod (802) are arranged in the same plane.

3. The concrete mixer of claim 2, wherein: and an included angle of 30-45 degrees is formed between the plane where the stirring sheet (801) is located and the plane perpendicular to the axis.

4. The concrete mixer of claim 3, wherein: the side edge of the stirring sheet (801) close to the inner wall of the stirring cavity (1) is arc-shaped.

5. A concrete mixer according to any one of claims 1-4, wherein: two adjacent groups of the connecting rods (802) are perpendicular to each other.

6. The concrete mixer of claim 5, wherein: the distances between the crushing rods (803) and the two adjacent groups of connecting rods (802) are equal.

7. The concrete mixer of claim 6, wherein: the crushing rod (803) and the connecting rod (802) in the adjacent group form an included angle of 45 degrees.

8. The concrete mixer of claim 7, wherein: the helical blades (804) between adjacent sets of the connecting rods (802) and the breaker bars (803) are connected between the connecting rods (802) and the breaker bars (803) at an included angle of 135 °.

9. The concrete mixer of claim 8, wherein: the crushing rod (803) is in a cone shape.

10. The concrete mixer of claim 8, wherein: the stirring shaft (7) is fixedly connected with the connecting rod (802), the connecting rod (802) is fixedly connected with the stirring sheet (801), the crushing rod (803) is fixedly connected with the stirring shaft (7), and the helical blade (804) is fixedly connected with the connecting rod (802) and the crushing rod (803).