Combined weigher gravity mixing chute and self-weight mixing system including the chute

Abstract

The present invention provides a combination weigher gravity mixing chute and a self-weight mixing system including the chute, including a combination weigher gravity mixing chute, characterized in that: the combination weigher gravity mixing chute includes a first mixing unit, the first mixing unit is a hollow body with upper and lower ends penetrating, and the inner side of the first mixing unit is provided with a first baffle plate facing the center of the first mixing unit and tilted downward. The present invention solves the problem of how to improve the mixing degree of two or more different materials in the prior art, which is currently needed to be solved.

Description

Technical Field

[0001] The invention relates to the technical field of combination weigher gravity mixing chutes, and in particular to a combination weigher gravity mixing chute and a self-weight mixing system comprising the chute. Background Art

[0002] The existing equipment for mixing two or more different materials, especially on the basis of standard combination weighers, has a low mixing degree of the materials after mixing. How to improve the mixing degree of two or more different materials is a problem that needs to be solved at present. Summary of the invention

[0003] The purpose of the present invention is to provide a combination weigher gravity mixing chute and a self-weight mixing system including the chute, mainly to solve the problem of how to improve the mixing degree of two or more different materials existing in the above-mentioned prior art, which is currently in need of being solved.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a combination weigher gravity mixing chute, characterized in that: the combination weigher gravity mixing chute includes a first mixing unit, the first mixing unit is a hollow body penetrated at both ends, and the inner side surface of the first mixing unit is provided with a first baffle extending toward the center direction of the first mixing unit and inclined downward.

[0005] Furthermore, the first mixing unit is composed of two or more chutes, each of which is a hollow body with upper and lower ends penetrating, and the inner side of each chute is provided with a first baffle extending toward the center direction of the first mixing unit and tilted downward;

[0006] Or the first mixing unit is composed of two or more chutes forming a hollow body with upper and lower ends penetrating, and the inner side of each chute is provided with a first baffle extending toward the center direction of the first mixing unit and tilted downward.

[0007] Furthermore, a first folded edge baffle is provided on the inner side surface of each chute and close to the left side portion and / or on the inner side surface of each chute and close to the right side portion; and / or a third folded edge baffle or a third folded edge is provided between the chutes.

[0008] Further, the upper opening of the first mixing unit is larger than or equal to the lower opening;

[0009] The first baffles include more than two first baffles, and gaps are provided between the first baffles.

[0010] Further, the lower portion of the first baffle is connected to the adjustment plate, and / or the lower portion of the first folded edge baffle is connected to the adjustment plate.

[0011] Further, the combination weigher gravity mixing chute includes more than two first mixing units, and the lower end opening of the first mixing unit located at the upper end corresponds to the upper end opening of the first mixing unit located at the lower end;

[0012] Or the combination weigher gravity mixing chute includes more than two first mixing units, the lower opening of the upper first mixing unit corresponds to the upper opening of the adjacent lower first mixing unit, and the lower first mixing unit is proportionally smaller than the adjacent upper first mixing unit.

[0013] Furthermore, the combination weigher gravity mixing chute includes a second mixing unit, which is a hollow body with upper and lower ends penetrating the second mixing unit, and the inner side of the second mixing unit is provided with a second baffle extending toward the center direction of the second mixing unit and tilted downward;

[0014] The lower opening of the first mixing unit or the lower opening of the lowest first mixing unit corresponds to the upper opening of the second mixing unit; or the lower opening of the first mixing unit or the lower opening of the lowest first mixing unit is inserted into the upper opening of the second mixing unit;

[0015] The first mixing unit is in a truncated cone shape or a truncated cone shape consisting of multiple faces; and / or the second mixing unit is in a truncated cone shape or a truncated cone shape consisting of multiple faces.

[0016] Furthermore, the first mixing unit is composed of four chutes forming a hollow body with upper and lower ends connected and the upper opening larger than the lower opening, and the hollow body is in a frustum shape composed of 16 inclined surfaces;

[0017] Two first baffles are arranged side by side near the middle of the inner side of each chute, and an adjustment plate is connected to the lower part of each first baffle. A first folding edge baffle is arranged near the left and right sides of the inner side of each chute; a third folding edge is arranged between the chutes;

[0018] The second mixing unit is a hollow body with upper and lower ends connected and the upper opening larger than the lower opening. The hollow body is in a cone shape consisting of 16 inclined surfaces, and a second baffle is provided inside each inclined surface;

[0019] The lower end opening of the first mixing unit is inserted into the upper end opening of the second mixing unit.

[0020] A combination weigher gravity mixing chute, characterized in that: the combination weigher gravity mixing chute comprises a first mixing unit and a second mixing unit, the first mixing unit is a hollow body with upper and lower ends penetrated, the inner side of the first mixing unit is provided with a first baffle for mixing materials; the inner side of the second mixing unit is provided with a second baffle for mixing materials again; the lower end opening of the first mixing unit corresponds to the upper end opening of the second mixing unit.

[0021] A self-weight mixing system, characterized in that: the self-weight mixing system comprises the above-mentioned combination weigher gravity mixing chute, the bottom of the combination weigher gravity mixing chute corresponds to the collecting part, and the top of the combination weigher gravity mixing chute corresponds to the conveying end of the conveying part of more than two materials.

[0022] In view of the above technical features, the present invention has the following beneficial effects:

[0023] The combined weigher gravity mixing chute and the self-weight mixing system including the chute in the present invention do not require external power. They rely on the impact of materials on baffles (including the first baffle, the second baffle, and the first folded edge baffle) during the material falling process to produce changes in the falling path, angle, and required falling time, so that the material can be collected at the bottom and the material mixing degree can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view of the gravity mixing chute of the combination weigher in Example 1.

[0025] Figure 2 It is a front view of the gravity mixing chute of the combination weigher in Example 1 (showing the internal structure).

[0026] Figure 3 It is a top view of the gravity mixing chute of the combination weigher in Example 1.

[0027] Figure 4 It is a schematic diagram of the installation structure of the first baffle plate and the adjustment plate of the gravity mixing chute of the combination weigher in Example 1 (corresponding to the AA position).

[0028] Figure 5 It is a working principle diagram of the gravity mixing chute of the combination weigher in Example 1.

[0029] In the figure: 1 is a chute; 2 is a first folding edge baffle; 3 is a first baffle; 4 is an adjustment plate; 5 is a collecting cone; 6 is a second baffle; 7 is a welding screw; 8 is a locking nut; 9 is a collecting part; and 10 is a third folding edge. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0031] Reference Figures 1 to 5, Specific embodiment 1, Embodiment 1 provides a combination weigher gravity mixing chute, characterized in that: the combination weigher gravity mixing chute includes a first mixing unit, the first mixing unit is a hollow body penetrated at both ends, and the inner side of the first mixing unit is provided with a first baffle 3 extending toward the center direction of the first mixing unit and inclined downward.

[0032] The first mixing unit is composed of more than two chutes 1 (or called "chute parts"), each chute 1 is a hollow body with upper and lower ends penetrating, and the inner side of each chute 1 is provided with a first baffle 3 extending toward the center direction of the first mixing unit and inclined downward; the upper end of the first mixing unit receives materials (such as two or more different materials), and during the falling process of the materials, the first baffle 3 helps to further mix the different materials, thereby improving the material mixing effect.

[0033] The first mixing unit is composed of two or more chutes 1 forming a hollow body with both ends connected, and the inner side of each chute 1 is provided with a first baffle 3 extending toward the center of the first mixing unit and tilted downward. In this embodiment 1, the first mixing unit is composed of four chutes 1 forming a hollow body with both ends connected and the upper opening larger than the lower opening. The hollow body is a cone-shaped body composed of 16 inclined surfaces (such as Figure 1 As shown), preferably, the 16 inclined surfaces are of the same size and shape (for example, the shape of the inclined surface is an isosceles trapezoid, in which case the first mixing unit is in the shape of a 16-sided frustum). This design facilitates the connection of the first baffle plate 3 and the first folded edge baffle plate 2 to the corresponding inner side surface of the inclined surface (i.e., the inner side surface of the chute 1). In this embodiment 1, a first baffle plate 3 or a first folded edge baffle plate 2 is provided on the inner side surface of each inclined surface.

[0034] An alternative solution is that the first mixing unit can also be formed by splicing four chutes 1 to form a truncated cone shape, which has a simpler manufacturing process.

[0035] The first baffle plate 3 may also be designed to have a folded angle and / or an arc, to further help adjust the angle of the adjustment plate 4 .

[0036] Preferably, the upper portion (or the upper end) of the first baffle 3 is connected to the inner side surface of the chute 1 (such as the inner side surface of the corresponding inclined surface), and the connection method is, for example, welding.

[0037] The upper opening of the first mixing unit is larger than or equal to the lower opening, that is, the large opening (i.e., the upper opening) faces upward for feeding (various materials are poured into the large opening at different angles and / or positions), so as to facilitate the entry of various materials into the first mixing unit; the small opening (i.e., the lower opening) of the first mixing unit faces downward for discharging (such as discharging the mixed materials), so as to facilitate the entry of the mixed materials into the collecting section 9.

[0038] As an alternative, the first mixing unit is composed of more than two chutes 1, each of which is a hollow body with upper and lower ends penetrating, and the inner side of each chute 1 is provided with a first baffle 3 extending toward the center of the first mixing unit and tilted downward.

[0039] The first baffle 3 includes more than two first baffles 3, and a gap is provided between the first baffles 3 (or adjacent first baffles 3 are provided separately), so as to facilitate the material or different materials to partially pass through the first baffle 3 and partially fall directly along the inner side of the chute 1, thereby indirectly helping to mix the materials and improving the mixing effect of the materials.

[0040] Preferably, a third folded edge 10 baffle or a third folded edge 10 is provided between the chutes 1. In this embodiment 1, it is preferred that a third folded edge 10 (or a flange) is provided between the chutes 1 to reduce the gap between the chutes 1, prevent materials from falling into the gap between the chutes 1, avoid affecting the operation of the gravity mixing chute of the combination weigher, and reduce unnecessary material loss (i.e., prevent leakage). The third folded edge 10 can be welded between two adjacent chutes 1 and close to the top of the chute 1. Alternatively, a third folded edge baffle (not shown in the accompanying drawings) can be selectively used instead of the third folded edge 10. The third folded edge baffle also has a side baffle design, which is more conducive to being close to the outer side of the chute 1 between the chutes 1 to prevent leakage.

[0041] The lower part of the first baffle plate 3 is connected to the adjustment plate 4, and / or the lower part of the first folding baffle plate 2 is connected to the adjustment plate 4. In this embodiment 1, preferably, the first baffle plate 3 and the adjustment plate 4 are connected by welding screws 7 and lock nuts 8; the long waist holes provided on the adjustment plate 4, especially multiple long waist holes, are used for welding screws 7 and lock nuts 8. The long waist holes at different positions can adjust the installation length of the adjustment plate 4 within a certain range, and the optimal length (i.e., the horizontal projection length and / or the tilt angle and / or the tilt length after the first baffle plate 3 and the adjustment plate 4 are connected) can be selected according to the characteristics of different materials, so that the falling angle, time and final mixing effect of multiple materials can be controlled.

[0042] The inner side surface of each chute 1 and close to the left side and / or the inner side surface of each chute 1 and close to the right side is provided with a first folded baffle 2. In this embodiment 1, it is preferred that the inner side surface of each chute 1 and close to the left side and the inner side surface of each chute 1 and close to the right side are provided with a first folded baffle 2, the first folded baffle 2 extends toward the center direction of the first mixing unit and is inclined downward, the first folded baffle 2 adopts an L-shaped fold, is generally symmetrically manufactured and used in pairs. The first folded baffle 2 is used to keep the material mixed inside the chute 1 as much as possible, to prevent the material from falling to the edge of the chute 1 (i.e., the edge on both sides), and then to prevent the material from falling into the gap between the chutes 1 to prevent leakage.

[0043] Of course, the lower part of the first folding baffle 2 can also be connected to the adjustment plate 4. The specific connection method refers to the connection method of the first baffle 3 and the adjustment plate 4. The first folding baffle 2 can select the optimal length according to the characteristics of different materials (that is, the horizontal projection length and / or the inclination angle and / or the inclination length after the first baffle 3 and the adjustment plate 4 are connected). In this way, the falling angle, time and final mixing effect of multiple materials can be controlled.

[0044] The plurality of first baffles 3 can be arranged at the same horizontal plane or at different horizontal planes (ie at different heights), as long as they can play a role in mixing the materials and control the falling path, falling angle and required falling time of the materials.

[0045] The plurality of first folding baffles 2 may be arranged at the same horizontal plane or at different horizontal planes (ie at different heights), and may be at the same height as the first baffle 3 or at a different height from the first baffle 3 .

[0046] The combined weigher gravity mixing chute includes a second mixing unit (i.e., a collecting cone 5, in this embodiment 1, a collecting cone 5 in the shape of a cone with 16 edges (or "inclined surfaces") is used, and the shape of the collecting cone 5 can also be similar to that of the first mixing unit), a hollow body with upper and lower ends penetrating the second mixing unit, and the inner side surface of the second mixing unit is provided with a second baffle 6 (also called a collecting cone 5 baffle) extending toward the center direction of the second mixing unit and inclined downward, that is, a second baffle 6 is provided on the inner side of each inclined surface or edge surface of the collecting cone 5; preferably, the second baffle 6 is welded to the inner side surface of the second mixing unit (i.e., the collecting cone 5); the second mixing unit can be an integrally formed hollow body, or it can be a hollow body formed by splicing a plurality of chutes 1.

[0047] The second baffle 6 may be connected to the adjustment plate 4 or not. When the second baffle 6 needs to be connected to the adjustment plate 4, the connection method of the first baffle 3 and the adjustment plate 4 can be referred to, and the function and effect are the same. Gaps are provided between the second baffles 6 to further mix the materials entering the second mixing unit. Gaps are provided between the second baffles 6 to allow part of the materials to fall along the second mixing unit and finally enter the collection part 9 (such as a collection box or a collection barrel).

[0048] In this embodiment 1, the lower opening of the first mixing unit is inserted into the upper opening of the second mixing unit to prevent the material from falling to the outside.

[0049] As an alternative, the lower opening of the first mixing unit corresponds to the upper opening of the second mixing unit, as long as the material falling from the lower opening of the first mixing unit can smoothly enter the upper opening of the second mixing unit.

[0050] The method of using the combined weigher gravity mixing chute in the present embodiment 1 is as follows: first, different materials (such as material A and material B, or multiple different materials) measured by the combined weigher are respectively put into the chute 1 from different directions, and the materials will slide along the inner wall of the chute 1 (and / or the inner wall of the sliding channel). After encountering the first folding baffle 2, the first baffle 3 (and / or the gap a between the first folding baffle 2 and the first baffle 3, and / or the gap b between the first baffle 3), the materials will be diverted, and a part of the materials will continue to slide along the inner wall of the chute 1 (for example, through the gap a and / or the gap b), and the other part of the materials will slide along the first folding baffle 2, the first baffle 3 and the adjustment plate 4. After the materials sliding down from the first folding baffle 2, the first baffle 3 and the adjustment plate 4 collide in the air (at this time, the materials are The falling path, angle and required falling time can be adjusted or controlled according to the length and angle of the first folding baffle 2, the first baffle 3 and the adjustment plate 4. For example, taking the first baffle 3 and the adjustment plate 4 as an example, the longer the length of the first baffle 3 and the adjustment plate 4, the longer the material falling through them will experience a longer material discharge path and a longer falling time. The falling angle can also be adjusted according to the inclination angle of the first baffle 3 and the adjustment plate 4, and the falling angle will then affect factors such as the falling path, path length and falling time; or the bending angle of the first baffle 3 can be adjusted by replacing the first baffle 3 with different bending angles, and then the first baffle 3 with different bending angles can be used to change the material falling path, falling angle and falling time) and enter the second mixing unit (i.e., the collecting cone 5) from the lower end opening of the first mixing unit.

[0051] Since the second baffle 6 (i.e., the baffle of the collecting cone 5) is installed in the second mixing unit (i.e., the collecting cone 5), the internal structure of the second mixing unit is similar to or the same as that of the first mixing unit, and the materials will be diverted and countered again. The two diversions, especially the second diversion, can make the falling time of the materials different, which can improve the phenomenon of upper and lower stratification when the materials are collected. Counter-attack can make different materials mix more evenly. In this way, when different materials are collected from the lower opening of the second mixing unit (i.e., the collecting cone 5), their mixing degree can be significantly improved.

[0052] In addition, a possible solution is that a plurality of first mixing units may be disposed above the second mixing unit, and the first mixing units may be arranged vertically from top to bottom in sequence to form multiple mixing operations with a better mixing effect.

[0053] At this time, the lower opening of the first mixing unit at the bottom corresponds to the upper opening of the second mixing unit; and / or the lower opening of the first mixing unit at the bottom is inserted into the upper opening of the second mixing unit.

[0054] Of course, multiple first mixing units may also have the same structure, with their sizes proportionally reduced, with the first mixing units becoming larger as they go up and smaller as they go down, gradually reducing in size from top to bottom and being arranged in sequence.

[0055] A combination weigher gravity mixing chute in this embodiment 1 is mainly used in combination weighing equipment. In the process of various materials falling by their own gravity, the combination weigher gravity mixing chute (actually using the first baffle plate and the first folding baffle plate of the first mixing unit; and / or the second baffle plate of the second mixing unit to control the material falling path, angle, time, etc. to achieve the purpose of improving the mixing effect of multiple materials) is used to complete the efficient mixing operation of multiple materials and improve the material mixing degree.

[0056] The first mixing unit and the second mixing unit may also be provided with auxiliary components such as hooks and / or mounting brackets for connecting other components or fixing themselves according to actual needs.

[0057] Specific embodiment 2, this embodiment 2 provides a combination weigher gravity mixing chute, and this embodiment 2 is different from embodiment 1 in that: the combination weigher gravity mixing chute includes more than two first mixing units, and the lower end opening of the first mixing unit located at the upper end corresponds to the upper end opening of the first mixing unit located at the lower end;

[0058] Or the combination weigher gravity mixing chute includes more than two first mixing units, the lower opening of the upper first mixing unit corresponds to the upper opening of the adjacent lower first mixing unit, and the lower first mixing unit is proportionally smaller than the adjacent upper first mixing unit.

[0059] The second mixing unit design is not adopted in this embodiment 2. The lower opening of the first mixing unit at the bottom directly corresponds to the collecting part 9. This embodiment 2 can also achieve multiple mixing, fully offset, and improve the effect of mixing multiple materials.

[0060] Specific embodiment 3, this embodiment 3 provides a combination weigher gravity mixing chute, and this embodiment 2 is different from the previous embodiment in that: the first mixing unit is not divided, but a complete single chute 1, and the inner wall of the single chute 1 is only provided with a first baffle 3 and an adjustment plate 4, and there is no folding baffle 2 design in this embodiment 3. This embodiment 3 can also achieve multiple mixing, sufficient hedging, and improve the effect of mixing multiple materials.

[0061] Specific embodiment 4, this embodiment 4 provides a self-weight mixing system, which includes the above-mentioned combination weigher gravity mixing chute, the bottom of the combination weigher gravity mixing chute (i.e., the bottom discharge port, used to output the mixed materials) corresponds to the collection part 9, and the top of the combination weigher gravity mixing chute corresponds to the conveying end of the conveying part of more than two materials (i.e., the discharge port of the conveying end, used to convey various different materials into the combination weigher gravity mixing chute to start material mixing). In actual operation, the conveying end of the conveying part can be slightly lower than the top of the combination weigher gravity mixing chute (such as the upper end opening of the first mixing unit), so as to avoid leakage of materials to the outside of the combination weigher gravity mixing chute.

[0062] In addition, preferably, a plurality of discharge ports may be provided at the conveying end of the conveying portion, each discharge port corresponding to above the first baffle 3 and / or the first folding baffle 2, so as to improve the material mixing effect.

[0063] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A combination weigher gravity mixing chute, characterized in that: The combination weigher gravity mixing chute comprises a first mixing unit, which is a hollow body with upper and lower ends penetrating therethrough, and an inner side surface of the first mixing unit is provided with a first baffle extending toward the center direction of the first mixing unit and tilted downward; The first mixing unit is composed of two or more chutes, each of which is a hollow body with upper and lower ends penetrating, and the inner side of each chute is provided with a first baffle extending toward the center direction of the first mixing unit and tilted downward; Or the first mixing unit is composed of two or more chutes forming a hollow body with upper and lower ends penetrating, and the inner side of each chute is provided with a first baffle extending toward the center direction of the first mixing unit and tilted downward; A first folding baffle is provided on the inner side of each chute and close to the left side and / or on the inner side of each chute and close to the right side; and a third folding baffle or a third folding edge is provided between the chutes.

2. The combination weigher gravity mixing chute according to claim 1, characterized in that: The upper opening of the first mixing unit is larger than or equal to the lower opening; The first baffles include more than two first baffles, and gaps are provided between the first baffles.

3. The combination weigher gravity mixing chute according to claim 2, characterized in that: The lower portion of the first baffle is connected to the adjustment plate, and / or the lower portion of the first folding baffle is connected to the adjustment plate.

4. The combination weigher gravity mixing chute according to claim 3, characterized in that: The combination weigher gravity mixing chute comprises more than two first mixing units, and the lower end opening of the first mixing unit located at the upper end corresponds to the upper end opening of the first mixing unit located at the lower end; Or the combination weigher gravity mixing chute includes more than two first mixing units, the lower end opening of the upper first mixing unit corresponds to the upper end opening of the adjacent lower first mixing unit, and the lower first mixing unit is proportionally smaller than the adjacent upper first mixing unit.

5. The combination weigher gravity mixing chute according to any one of claims 1 to 4, characterized in that: The combination weigher gravity mixing chute comprises a second mixing unit, which is a hollow body with upper and lower ends penetrating therethrough, and an inner side surface of the second mixing unit is provided with a second baffle extending toward the center of the second mixing unit and tilted downward; The lower opening of the first mixing unit or the lower opening of the lowest first mixing unit corresponds to the upper opening of the second mixing unit; or the lower opening of the first mixing unit or the lower opening of the lowest first mixing unit is inserted into the upper opening of the second mixing unit; The first mixing unit is in a truncated cone shape or a truncated cone shape consisting of multiple faces; and / or the second mixing unit is in a truncated cone shape or a truncated cone shape consisting of multiple faces.

6. The combination weigher gravity mixing chute according to claim 5, characterized in that: The first mixing unit is composed of four chutes forming a hollow body with upper and lower ends connected and the upper opening larger than the lower opening, and the hollow body is in a frustum shape composed of 16 inclined surfaces; Two first baffles are arranged side by side near the middle of the inner side of each chute, and an adjustment plate is connected to the lower part of each first baffle. A first folding edge baffle is arranged near the left and right sides of the inner side of each chute; a third folding edge is arranged between the chutes; The second mixing unit is a hollow body with upper and lower ends connected and the upper opening larger than the lower opening. The hollow body is in a cone shape consisting of 16 inclined surfaces, and a second baffle is provided inside each inclined surface; The lower end opening of the first mixing unit is inserted into the upper end opening of the second mixing unit.

7. A combination weigher gravity mixing chute, characterized in that: The combination weigher gravity mixing chute comprises a first mixing unit and a second mixing unit. The first mixing unit is a hollow body with both ends connected. The inner side of the first mixing unit is provided with a first baffle for mixing materials. The inner side of the second mixing unit is provided with a second baffle for mixing materials again. The lower end opening of the first mixing unit corresponds to the upper end opening of the second mixing unit. The first mixing unit is composed of two or more chutes, each of which is a hollow body with upper and lower ends penetrating, and the inner side of each chute is provided with a first baffle extending toward the center direction of the first mixing unit and tilted downward; Or the first mixing unit is composed of two or more chutes forming a hollow body with upper and lower ends penetrating, and the inner side of each chute is provided with a first baffle extending toward the center direction of the first mixing unit and tilted downward; A first folding baffle is provided on the inner side of each chute and close to the left side and / or on the inner side of each chute and close to the right side; and a third folding baffle or a third folding edge is provided between the chutes.

8. A self-weight mixing system, characterized in that: The self-weight mixing system comprises the combination weigher gravity mixing chute described in claim 1 or 2 or 3 or 4 or 6 or 7 above, the bottom of the combination weigher gravity mixing chute corresponds to the collecting section, and the top of the combination weigher gravity mixing chute corresponds to the conveying end of the conveying section for conveying more than two materials.

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