WO2021244039A1

WO2021244039A1 - Mixing drum and mixer truck

Info

Publication number: WO2021244039A1
Application number: PCT/CN2021/072886
Authority: WO
Inventors: 刘斌; 易智; 孙虎
Original assignee: 三一专用汽车有限责任公司
Priority date: 2020-06-03
Filing date: 2021-01-20
Publication date: 2021-12-09
Also published as: CN212707408U

Abstract

A mixing drum (100) and a mixer truck. The mixing drum (100) comprises: a drum body (110) provided with a feed inlet (112); and spiral mixing blades (120) arranged in the drum body (110). The inner edges of the spiral mixing blades (120) enclose and form a channel structure, and the channel structure penetrates the spiral mixing blade (120) along the length direction of the drum body (110). The channel structure comprises a first channel (132), and the first channel (132) is located at the feed inlet (112) of the drum body (110). In the direction from the feed inlet (112) of the drum body (110) to the first channel (132), the cross-sectional area of a first end (134) of the first channel (132) is larger than or equal to the cross-sectional area of a second end (136) of the first channel (132).

Description

Mixing drum and mixer truck

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office of China, the application number is "202020987093.2", and the invention title is "mixing drum and mixer truck" on June 3, 2020. The entire content is incorporated into this by reference. Applying.

Technical field

This application relates to the technical field of engineering machinery, and specifically to a mixer drum and a mixer truck.

Background technique

In related technologies, the dry mixing drum has a relatively small loading capacity and fails to make full use of the space inside the mixing drum, which makes it difficult for dry concrete transportation to produce better economic benefits.

Summary of the invention

The purpose of this application is to at least solve or improve one of the technical problems existing in the prior art or related technologies.

For this reason, the first aspect of this application proposes a mixing drum.

The second aspect of the application proposes a mixer truck.

In view of this, the first aspect of the present application proposes a mixing drum, which includes: a drum body with a material opening; a spiral mixing blade arranged in the drum; The channel structure penetrates the spiral stirring blade, the channel structure includes a first channel, the first channel is located at the material port of the cylinder; wherein, along the direction from the material port of the cylinder to the first channel, the first channel of the first channel The cross-sectional area of the end is greater than or equal to the cross-sectional area of the second end of the first passage.

The mixing drum provided by this application includes a drum body, a spiral stirring blade and a channel structure. The inner edge of the spiral stirring blade is enclosed to form a channel structure. The channel structure realizes the feeding of materials (for example, concrete) and the discharging of at least part of the materials.

Further, by reasonably setting the channel structure, the channel structure includes a first channel. The first channel has a first end and a second end. The cross-sectional area is greater than or equal to the cross-sectional area of the second end of the first channel, so the blocking ability of the spiral mixing blades against materials (such as concrete) is improved, so that the materials in the cylinder are not easy to overflow. This setting should not change the structure of the cylinder. Bottom, the internal space of the cylinder is reasonably used, the loading capacity of the mixing cylinder is increased, the loading capacity of the product is improved, and the loading height of the product is increased. In addition, this arrangement makes reasonable use of the existing structure of the cylinder, which is beneficial to reduce the cost of product transformation, has strong operability, and is convenient for mass production.

Specifically, the height of the blade cross section of the spiral stirring blade on the side of the material opening of the cylinder is increased to ensure the structure of the first passage.

According to the above-mentioned mixing drum of this application, it may also have the following additional technical features:

In the above technical solution, further, the cross-sectional area of the first end is equal to the cross-sectional area of the second end, and the areas of any two cross-sections of the first passage are equal; or the cross-sectional area of the first end is greater than the cross-sectional area of the second end, and Along the direction from the material port of the cylinder to the first channel, the cross-sectional area of the first channel gradually decreases.

In this technical solution, the cross-sectional area of the first end is equal to the cross-sectional area of the second end, and the areas of any two cross-sections of the first channel are equal. While the mixing blade has the ability to block materials (such as concrete), it has the advantages of simple product processing technology and easy realization.

Or the cross-sectional area of the first end is larger than the cross-sectional area of the second end, and the cross-sectional area of the first passage gradually decreases along the direction from the material port of the cylinder to the first passage. That is, the first channel is configured as an inverted trumpet structure, and this arrangement can effectively increase the blocking ability of the spiral mixing blades against materials (such as concrete), thereby increasing the loading capacity of the mixing drum during operation.

In any aspect, further, the cross-sectional area of the first end and the second end of the cross-sectional area are satisfied: 0.19m ² to 0.34m ^2.

In this technical solution, the cross-sectional area of the first end and the cross-sectional area of the second end both satisfy: 0.19m ² to 0.34m ^{2. In} this way, it can meet the needs of different types or sizes of products, which is beneficial to improve the adaptability of products. Sexuality and universality.

Furthermore, the cross-sectional area of the first end satisfies: 0.19m ² to 0.34m ² , which can ensure sufficient feeding space and the static loading capacity of the mixing drum; the cross-sectional area of the second end satisfies: 0.19m ² to 0.34m ² , which can ensure Effectively increase the maximum loading capacity of the mixing drum when it is working, which in turn is beneficial to increase the loading height of the mixing drum.

In any of the above technical solutions, further, the pitch of the spiral stirring blade is gradually increased along the direction from the material port of the barrel to the first channel.

In this technical solution, by reasonably setting the structure of the spiral stirring blade, the pitch of the spiral stirring blade is gradually increased along the direction from the material port of the cylinder to the first channel, because the pitch of the screw near the material port of the cylinder is small. Therefore, it can effectively avoid the situation that the material of the barrel body is turned over when the mixing drum rotates, and the possibility of concrete overflow is reduced.

Further, along the direction away from the material opening of the barrel, the pitch of the spiral stirring blade gradually increases. This setting enables the material in the barrel to be quickly moved and agitated, so that it has better performance when the rotating speed of the mixing barrel is constant. Incoming and discharging performance.

In any of the above technical solutions, further, along the direction from the material port of the cylinder to the first channel, the initial pitch of the spiral stirring blade satisfies: 0.4m to 0.6m; and/or along the material port of the cylinder to the first channel In the direction of a channel, the end pitch of the spiral stirring blade meets: 1.05m to 1.25m.

In this technical solution, by reasonably setting the pitch of the spiral stirring blade, the initial pitch of the spiral stirring blade along the direction from the material port of the cylinder to the first channel satisfies: 0.4m to 0.6m. In this way, the cylinder can be effectively avoided. When the material in the body is turned over when the mixing drum rotates, it can increase the loading capacity of the mixing drum when it is working, and then increase the loading capacity of the product.

In addition, by reasonably setting the pitch of the spiral stirring blades, the final pitch of the spiral stirring blades in the direction from the material port of the cylinder to the first channel satisfies: 1.05m to 1.25m. This setting enables the material in the cylinder to be moved quickly , Stirring, so that the mixing drum has a better feeding and discharging performance under the condition of a certain rotation speed, and can realize fast loading and unloading.

In any of the above technical solutions, further, the spiral stirring blade includes: a first spiral blade arranged in the cylinder; a second spiral blade arranged in the cylinder; the second spiral blade and the first spiral blade are arranged alternately with each other. A helical blade and a second helical blade enclose the channel structure.

In this technical solution, by reasonably setting the structure of the spiral stirring blade, the spiral stirring blade includes a first spiral blade and a second spiral blade, and the positional relationship between the first spiral blade and the second spiral blade and the first spiral blade and the second spiral blade The structure of the two spiral blades themselves (for example, increase the height of the blade cross-section of the first spiral blade and the second spiral blade on the side of the barrel of the barrel) to ensure the structure of the enclosed first channel, in order to improve the loading capacity of the product Provides effective and reliable structural support.

In any of the above technical solutions, further, the first spiral blades and the second spiral blades are arranged 180° staggered with each other.

In this technical solution, the first spiral blade and the second spiral blade are arranged 180° staggered with each other, which provides a reliable and stable structural support for forming the channel structure.

In any of the above technical solutions, further, the structure of the first spiral blade is the same as the structure of the second spiral blade.

In this technical solution, since the structure of the first spiral blade is the same as the structure of the second spiral blade, the versatility of the first spiral blade and the second spiral blade is ensured. In this way, it is possible to avoid incorrect installation of components when assembling the mixing drum. Occurs, simplifying the difficulty of assembly. At the same time, since the structure of the first spiral blade is the same as the structure of the second spiral blade, the investment in tooling and equipment for producing the spiral blade is reduced, which is beneficial to reduce the production cost of the product.

In any of the above technical solutions, further, the first spiral blade, the second spiral blade and the cylinder are connected by welding.

In this technical solution, the first helical blade, the second helical blade and the barrel are connected by welding. This arrangement can ensure the stability and reliability of the connection between the first helical blade, the second helical blade and the barrel, and is the first helical blade And the second spiral blade provides effective structural support along with the rotation of the barrel. And the structure setting can ensure the dimensional accuracy requirements of product molding.

The second aspect of the present application proposes a mixer truck including: the mixer drum according to any one of the technical solutions in the first aspect.

Since the mixer truck provided by the present application includes the mixing drum as in any one of the technical solutions in the first aspect, it has all the beneficial effects of the above-mentioned mixing drum, and will not be described here.

The additional aspects and advantages of the present application will become apparent in the following description, or be understood through the practice of the present application.

Description of the drawings

The above and/or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

Figure 1 shows a schematic diagram of the structure of a mixing drum in the related art;

Figure 2 shows a schematic diagram of the structure of a spiral stirring blade in the related art;

Fig. 3 shows a schematic structural diagram of a mixing drum according to an embodiment of the present application;

4 is a schematic diagram of the size structure of the mixing drum of the embodiment shown in FIG. 3;

Fig. 5 shows a schematic structural diagram of a spiral stirring blade according to an embodiment of the present application.

Among them, the corresponding relationship between the reference signs and component names in Figures 1 and 2 is:

100’ mixing drum, 110’ barrel, 112’ feed opening, 120’ spiral mixing blade, 130’ channel structure;

The correspondence between the reference signs and component names in Figures 3 to 5 is:

100 mixing drum, 110 cylinder, 112 feed port, 120 spiral mixing blade, 122 first spiral blade, 124 second spiral blade, 132 first passage, 134 first end, 136 second end.

detailed description

In order to be able to understand the above objectives, features and advantages of the application more clearly, the application will be further described in detail below with reference to the accompanying drawings and specific implementations. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other if there is no conflict.

In the following description, many specific details are set forth in order to fully understand this application. However, this application can also be implemented in other ways different from those described here. Therefore, the scope of protection of this application is not subject to the specific details disclosed below. Limitations of the embodiment.

Hereinafter, the mixing drum 100 and the mixing truck according to some embodiments of the present application will be described with reference to FIGS. 3 to 5.

Example 1:

As shown in FIGS. 3 and 5, the embodiment of the first aspect of the present application proposes a mixing drum 100 including a drum 110, a spiral mixing blade 120 and a channel structure. Wherein, the barrel 110 is provided with a feed port 112, and the spiral stirring blade 120 is arranged in the barrel 110; the inner edge of the spiral stirring blade 120 is enclosed to form a channel structure (not shown in the figure), along the length direction of the barrel 110, The channel structure penetrates the spiral stirring blade 120, and the channel structure includes a first channel 132 located at the material port 112 of the cylinder 110; wherein, along the direction from the material port 112 of the cylinder 110 to the first channel 132, the first channel 132 The cross-sectional area of the first end 134 of the passage 132 is greater than or equal to the cross-sectional area of the second end 136 of the first passage 132.

In detail, the mixing drum 100 includes a cylindrical body 110, a spiral mixing blade 120, and a channel structure. The inner edge of the spiral mixing blade 120 is enclosed to form a channel structure, and along the length direction of the cylinder 110, the channel structure penetrates the spiral mixing blade 120. , The material (such as concrete) can be fed in and at least part of the material can be discharged through the channel structure.

Further, by rationally setting the channel structure, the channel structure includes a first channel 132. The first channel 132 has a first end 134 and a second end 136. The first end 134 and the second end 136 are opposed and arranged at intervals along the cylinder 110 to the direction of the first channel 132, the cross-sectional area of the first end 134 of the first channel 132 is greater than or equal to the cross-sectional area of the second end 136 of the first channel 132, so the spiral mixing blade 120 is increased to the material ( For example, the blocking ability of concrete) makes the material in the cylinder 110 not easy to overflow. This arrangement makes reasonable use of the internal space of the cylinder 110 without changing the structure of the cylinder 110, and increases the working time of the mixing cylinder 100. The loading capacity of the product improves the loading capacity of the product and the loading height of the product. In addition, this arrangement makes reasonable use of the existing structure of the cylinder 110, which is beneficial to reduce the cost of product transformation, has strong operability, and is convenient for mass production.

Specifically, the cross section of the first channel 132, that is, the cross section of the first channel 132 along the direction perpendicular to the feeding direction of the material in the first channel 132.

Specifically, the blade cross-sectional height of the spiral stirring blade 120 on the side of the material port 112 of the cylinder 110 is increased to ensure the structure of the first passage.

Example 2:

According to an embodiment of the present application, it includes the features defined in any of the above embodiments, and further: the cross-sectional area of the first end 134 is equal to the cross-sectional area of the second end 136, and the area of any two cross-sections of the first passage 132 Equal; or the cross-sectional area of the first end 134 is greater than the cross-sectional area of the second end 136, and the cross-sectional area of the first channel 132 gradually decreases along the direction from the material port 112 of the barrel 110 to the first channel 132.

In detail, the cross-sectional area of the first end 134 is equal to the cross-sectional area of the second end 136, and the areas of any two cross-sections of the first passage 132 are equal, that is, the first passage 132 is configured as a columnar structure, and the arrangement is While the large spiral mixing blade 120 has the ability to block materials (for example, concrete), it has the advantages of simple product processing technology and easy realization.

Or the cross-sectional area of the first end 134 is larger than the cross-sectional area of the second end 136, and the cross-sectional area of the first channel 132 gradually decreases along the direction from the material port 112 of the barrel 110 to the first channel 132. That is, the first channel 132 is configured as an inverted trumpet structure, and this arrangement can effectively increase the blocking ability of the spiral mixing blade 120 to materials (such as concrete), thereby increasing the loading capacity of the mixing drum 100 during operation.

Example 3:

According to one embodiment of the present disclosure, including the features defined in any of the preceding embodiments embodiment, and further: a first end 134 of the cross-sectional area and cross-sectional area of the second end 136 are satisfied: 0.19m ² to 0.34m ^2.

In detail, the cross-sectional area of the first end 134 and the cross-sectional area of the second end 136 both satisfy: 0.19m ² to 0.34m ^{2. In} this way, it can meet the needs of different types or sizes of products, which is beneficial to improve the adaptability of products. Sexuality and universality.

In addition, the cross-sectional area of the first end 134 satisfies: 0.19m ² to 0.34m ² , which can ensure sufficient feed space and the static loading capacity of the mixing drum 100; the cross-sectional area of the second end 136 satisfies: 0.19m ² to 0.34m ^2. It can effectively increase the maximum loading capacity of the mixing drum 100 during operation, which in turn is beneficial to increase the loading height of the mixing drum 100.

Specifically, the cross-sectional area of the first end 134 is 0.19m ² , 0.196m ² , 0.2m ² , 0.22m ² , 0.25m ² , 0.3m ² , 0.32m ² and 0.34m ^2, etc., which are not one by one here Enumerate.

Specifically, the cross-sectional area of the second end 136 is 0.19m ² , 0.196m ² , 0.2m ² , 0.22m ² , 0.25m ² , 0.3m ² , 0.32m ² and 0.34m ^2, etc., which are not one by one here Enumerate.

Example 4:

According to an embodiment of the present application, including the features defined in any of the above embodiments, and further: along the direction from the material port 112 of the barrel 110 to the first channel 132, the pitch of the spiral stirring blade 120 gradually increases.

In detail, by rationally setting the structure of the spiral stirring blade 120, the pitch of the spiral stirring blade 120 gradually increases along the direction from the material port 112 of the cylinder 110 to the first channel 132. The screw pitch of the cylinder 110 is small, so the material in the cylinder 110 can be effectively prevented from turning over when the mixing drum 100 rotates, and the possibility of concrete overflow is reduced.

In addition, along the direction away from the material port 112 of the barrel 110, the pitch of the spiral stirring blade 120 gradually increases. This arrangement enables the material in the barrel 110 to be quickly moved and agitated, so that the rotating speed of the mixing barrel 100 is constant. It has better feeding and discharging performance.

Further, along the direction from the material port 112 of the cylinder 110 to the first channel 132, the initial pitch of the spiral stirring blade 120 satisfies: 0.4m to 0.6m; and/or along the material port 112 of the cylinder 110 to the first channel In the direction of 132, the terminal pitch of the spiral stirring blade 120 satisfies: 1.05m to 1.25m.

By reasonably setting the pitch of the spiral stirring blade 120, the initial pitch of the spiral stirring blade 120 in the direction from the material port 112 of the barrel 110 to the first passage 132 meets: 0.4m to 0.6m, which can effectively avoid the barrel. When the materials in 110 follow the rotation of the mixing drum 100, the situation occurs, which can increase the loading capacity of the mixing drum 100 when it is working, thereby increasing the product loading capacity.

Specifically, the initial pitch of the spiral stirring blade 120 is 0.4m, 0.45m, 0.5m, 0.55m, 0.6m, etc., which are not listed here.

In addition, by reasonably setting the pitch of the spiral stirring blade 120, the end pitch of the spiral stirring blade 120 along the direction from the material port 112 of the cylinder 110 to the first passage 132 satisfies: 1.05m to 1.25m. This setting makes the cylinder 110 The materials inside can be quickly moved and agitated, so that when the rotating speed of the mixing drum 100 is constant, it has better feeding and discharging performance, and rapid loading and unloading can be realized.

Specifically, the terminal pitch of the spiral stirring blade 120 is 1.05m, 1.1m, 1.15m, 1.2m, 1.22m, 1.25m, etc., which are not listed here.

Specifically, as shown in FIG. 4, along the direction from the material port 112 of the barrel 110 to the first passage 132, the initial pitch of the spiral stirring blade 120 is L1, and the ending pitch of the spiral stirring blade 120 is L2. Among them, the starting pitch is the smallest pitch among the multiple pitches, and the ending pitch is the largest pitch among the multiple pitches.

Example 5:

As shown in FIGS. 3 and 5, according to an embodiment of the present application, it includes the features defined in any of the above embodiments, and further: the spiral stirring blade 120 includes: a first spiral blade 122 arranged in the barrel 110; The second helical blade 124 is arranged in the cylinder 110, the second helical blade 124 and the first helical blade 122 are alternately arranged with each other, and the first helical blade 122 and the second helical blade 124 enclose the channel structure.

In detail, by rationally setting the structure of the spiral stirring blade 120, the spiral stirring blade 120 includes the first spiral blade 122 and the second spiral blade 124, and the positional relationship between the first spiral blade 122 and the second spiral blade 124 and the first spiral blade The structures of the blades 122 and the second spiral blades 124 ensure the structure of the enclosed first channel 132 and provide effective and reliable structural support for improving the loading capacity of the product.

Specifically, by setting the height of the blade section of the first spiral blade 122 close to the discharge port 112 of the cylinder 110 to be increased, and to increase the height of the blade section of the second screw blade 124 close to the discharge port 112 of the cylinder 110 , So that the first channel 132 and the second channel enclosed by the first spiral blade 122 and the second spiral blade 124 near the material opening 112 of the cylinder 110 are cylindrical or inverted flared.

Further, the first spiral blade 122 and the second spiral blade 124 are arranged in a 180° staggered manner with each other. The first spiral blades 122 and the second spiral blades 124 are arranged 180° staggered with each other, which provides a reliable and stable structural support for forming a channel structure.

Further, the structure of the first spiral blade 122 is the same as the structure of the second spiral blade 124. The versatility of the first spiral blade 122 and the second spiral blade 124 is ensured. In this way, it is possible to avoid the occurrence of incorrect installation of components when assembling the mixing drum 100, and simplify the assembly difficulty. At the same time, since the structure of the first spiral blade 122 is the same as the structure of the second spiral blade 124, the investment in tooling and equipment for producing the spiral blade is reduced, which is beneficial to reduce the production cost of the product.

Further, the first spiral blade 122, the second spiral blade 124 and the cylinder 110 are welded and connected. This arrangement can ensure the stability and reliability of the connection between the first helical blade 122, the second helical blade 124 and the cylinder 110, and provides an effective structure for the first helical blade 122 and the second helical blade 124 to rotate with the cylinder 110 support. In addition, the structure setting can ensure the dimensional accuracy requirements of product molding.

Specifically, as shown in FIG. 5, the thick solid line shows the first spiral blade 122 and the thin solid line shows the second spiral blade 124.

Example 6:

The embodiment of the second aspect of the present application proposes a mixer truck (not shown in the figure) including: the mixer drum 100 as in any embodiment of the first aspect.

Since the mixer truck provided in the present application includes the mixer drum 100 of any of the embodiments in the first aspect, it has all the beneficial effects of the above mixer drum 100 and will not be described here.

Specifically, the mixer truck includes a driving device, which is connected to the mixing drum 100, and the driving device is configured to drive the mixing drum 100 to rotate.

Specifically, the mixer truck is a dry concrete truck.

In specific embodiments:

Fig. 1 shows a schematic structural diagram of a mixing drum 100' in the related art; Fig. 2 shows a structural schematic diagram of a spiral mixing blade 120' in the related art. Wherein, the stirring drum 100' includes a barrel 110', a spiral stirring blade 120' and a channel structure 130', and the channel structure 130' is provided on the spiral stirring blade 120'. The channel structure 130' includes a first end and a second end, and the first end and the second end are spaced apart. In the section passing through the first end, in the line connecting any two points on the outer surface of the spiral stirring blade 120', the line passing through the center line of the channel structure 130' is denoted as d1; in the section passing through the second end, the spiral stirring blade In the line connecting any two points on the outer surface of 120', the line passing through the centerline of the channel structure 130' is denoted as d2; the loading height of the mixing drum 100' is denoted as h; where, d1<d2, and the cross section is perpendicular to The centerline of the channel structure 130'. Wherein, d1<d2, and along the direction from the material port 112' of the cylinder 110' to the channel structure 130', the cross-sectional area of the channel structure 130' gradually increases. This arrangement results in a small loading capacity of the mixing drum 100', and fails to make full use of the space in the mixing drum 100', which makes it difficult for material transportation to produce better economic benefits.

The present application reasonably sets the structure of the mixing drum 100. As shown in Figs. 3, 4 and 5, the cross-sectional area of the first end 134 is larger than the cross-sectional area of the second end 136, and along the material port 112 to the second end of the barrel 110 In the direction of a channel 132, the cross-sectional area of the first channel 132 gradually decreases, that is, the first channel 132 is configured as an inverted trumpet structure. In this embodiment, in the cross section passing through the first end 134 of the first passage 132, in the line connecting any point in the first spiral blade 122 and any point in the second spiral blade 124, the line passing through the first passage 132 The line connecting the centerline is denoted as D1; in the section passing through the second end 136 of the first passage 132, the line connecting any point in the first spiral blade 122 and any point in the second spiral blade 124 passes through the first The line connecting the center line of the channel 132 is denoted as D2; the loading height of the mixing drum 100 is denoted as H; wherein, D1≥D2, and the cross section is perpendicular to the center line of the first channel 132.

The present application increases the cross-sectional height of the first spiral blade 122 and the second spiral blade 124 on the side of the mixing drum 100 close to the material opening 112, and makes the first spiral blade 122 and the second spiral blade 124 on this side enclose the outlet side larger The inner side small inverted bell mouth channel, D1≥D2 (or the first spiral blade 122 and the second spiral blade 124 enclose a cylindrical channel), both D1 and D2 meet: 0.5mm to 0.65mm.

By setting the value of D1 reasonably, it is possible to ensure sufficient feed space and the static loading capacity of the mixing drum 100; the increase of the blade section height at the inner D2, that is, the reasonable setting of the value of D2, can effectively improve the working time of the mixing drum 100 The maximum loading capacity makes the loading height H of the mixing drum 100 of the present application greater than the loading height h of the mixing drum 100' in the related art.

Further, the pitch (L1) of the spiral mixing blade 120 on the side of the material port 112 close to the cylinder 110 is relatively small, and L1 is in the range of 0.4m to 0.6m, so as to avoid spillage of the concrete when it is turned over. The pitch of the remaining spiral mixing blades 120 gradually increases, and the maximum pitch (L2) is in the range of 1.05m to 1.25m, taking into account the rapid feeding and discharging performance of the mixing drum 100.

In this application, the term "plurality" refers to two or more than two, unless specifically defined otherwise. The terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be It is directly connected or indirectly connected through an intermediary. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in this application In at least one embodiment or example. In this specification, the schematic representations of the above-mentioned terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

The foregoing descriptions are only preferred embodiments of the application, and are not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

A mixing drum, which includes:

The barrel is provided with a material port;

Spiral mixing blades are arranged in the cylinder;

The inner edge of the spiral stirring blade is enclosed to form a channel structure. Along the length of the cylinder, the channel structure penetrates the spiral stirring blade. The channel structure includes a first channel, and the first channel is located at the The material port of the cylinder;

Wherein, along the direction from the material port of the barrel to the first passage, the cross-sectional area of the first end of the first passage is greater than or equal to the cross-sectional area of the second end of the first passage.
The mixing drum according to claim 1, wherein:

The cross-sectional area of the first end is equal to the cross-sectional area of the second end, and the areas of any two cross-sections of the first passage are equal; or

The cross-sectional area of the first end is larger than the cross-sectional area of the second end, and the cross-sectional area of the first passage gradually decreases along the direction from the material port of the barrel to the first passage.
The mixing drum according to claim 1 or 2, wherein:

Sectional area of the first end and a second end of the cross-sectional area are true: 0.19m 2 to 0.34m 2.
The mixing drum according to claim 1 or 2, wherein:

Along the direction from the material port of the barrel to the first passage, the pitch of the spiral stirring blade gradually increases.
The mixing drum according to claim 4, wherein:

Along the direction from the material port of the barrel to the first channel, the initial pitch of the spiral stirring blade satisfies: 0.4m to 0.6m; and/or

Along the direction from the material port of the barrel to the first channel, the terminal pitch of the spiral stirring blade satisfies: 1.05m to 1.25m.
The mixing drum according to claim 1 or 2, wherein the spiral mixing blade comprises:

The first spiral blade is arranged in the cylinder;

The second helical blade is arranged in the cylinder, the second helical blade and the first helical blade are alternately arranged with each other, and the first helical blade and the second helical blade enclose the channel structure.
The mixing drum according to claim 6, wherein:

The first spiral blade and the second spiral blade are arranged 180° staggered with each other.
The mixing drum according to claim 6, wherein:

The structure of the first spiral blade is the same as the structure of the second spiral blade.
The mixing drum according to claim 6, wherein:

The first spiral blade, the second spiral blade and the cylinder are connected by welding.
A mixer truck, which includes:

The mixing drum according to any one of claims 1 to 9.