Powder discharging screw rod and powder discharging device

Abstract

The utility model discloses a powder discharging screw rod which comprises a rod-shaped main body, the spiral blades are spirally wound around the rod-shaped main body, the material pushing part is located at the bottom of the rod-shaped main body and between the adjacent spiral blades, in the extending direction of the rod-shaped main body, of the bottom, and at least part of the material pushing part is relatively fixed to the rod-shaped main body and / or the spiral blades; and the material pushing part and the blade tail edge of the spiral blade are staggered in the circumferential direction of the rod-shaped main body. The material pushing part and the discharging ends of the spiral blades are arranged in the circumferential direction in a staggered mode so that materials can be pushed at the bottom of the rod-shaped body and between the adjacent spiral blades, material stacking between the adjacent spiral blades can be avoided, the discharging effect can be improved, and therefore the powder discharging screw can effectively solve the problem that the discharging effect of the powder discharging screw is not good. The utility model further discloses a powder discharging device comprising the powder discharging screw.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and more specifically, to a powder discharge screw, and to a powder discharge device including the above-mentioned powder discharge screw. Background Technology

[0002] For families with infants and young children, preparing formula is a very normal but also very troublesome task. More and more consumers are opting for formula preparation devices that can dispense measured amounts of formula. Existing formula preparation machines typically include a formula storage compartment, a feeding screw, and a drive mechanism. The feeding screw dispenses a measured amount of formula, and the drive mechanism rotates the screw to output the formula. Current feeding screws consist of a screw body and spiral blades circumferentially positioned around the screw body. The rotation of the spiral blades delivers the formula to the outlet, resulting in low conveying efficiency and difficulty in discharging the formula from the outlet.

[0003] In conclusion, how to effectively solve the problem of poor material discharge performance of powder-discharging screws is an urgent issue that needs to be addressed by those skilled in the art. Utility Model Content

[0004] In view of this, the first objective of this utility model is to provide a powder discharge screw that can effectively solve the problem of poor material discharge effect of the powder discharge screw. The second objective of this utility model is to provide a powder discharge device including the above-mentioned powder discharge screw.

[0005] To achieve the first objective mentioned above, this utility model provides the following technical solution:

[0006] A powder discharge screw, comprising:

[0007] Rod-shaped main body;

[0008] A helical blade, the helical blade being helically wound around the rod-shaped body.

[0009] A pusher is located at the bottom of the rod-shaped body and between the bottom and the adjacent helical blades in the extending direction of the rod-shaped body. The pusher is at least partially fixed relative to the rod-shaped body and / or the helical blades, and the pusher and the trailing edge of the helical blades are offset in the circumferential direction of the rod-shaped body.

[0010] In the aforementioned powder discharge screw, in addition to the material pushing by the spiral blades, a pushing part is added to the discharge end of the spiral blades. The pushing part is located between the bottom of the rod-shaped body and the adjacent spiral blades. The pushing part and the discharge end of the spiral blades are staggered in the circumferential direction so that the material is pushed between the bottom of the rod-shaped body and the adjacent spiral blades, thereby avoiding the accumulation of material at the bottom of the powder discharge screw and improving the discharge effect. Therefore, this powder discharge screw can effectively solve the problem of poor discharge effect of powder discharge screws.

[0011] In some technical solutions, the pushing part is a pushing plate, including a radially extending edge extending radially along the rod-shaped body and an axially extending edge extending axially along the rod-shaped body. The radially extending edge is flush with the bottom surface of the rod-shaped body, and the axially extending edge is flush with the radial outer side of the helical blade; and / or, the pushing part and the blade tail edge are located on opposite sides of the rod-shaped body.

[0012] In some technical solutions, multiple rod segments are also included, located above the helical blade. The multiple rod segments are connected to the rod-shaped body to form a closed structure, and the multiple rod segments are not coplanar.

[0013] The multi-segment rod includes at least one intermediate rod body and a connecting rod. The intermediate rod body includes a first end and a second end that are connected to each other. The first end is located in front of the second end in the rotation direction corresponding to the rotation direction when the powder discharge screw rotates to discharge material. The first end is located above the second end. The connecting rod connects the rod-shaped main body and the intermediate rod body.

[0014] The connecting rod includes a first connecting rod and a second connecting rod. The inner end of the first connecting rod is connected to the rod-shaped main body, and the outer end is connected to the first end of the intermediate rod. The inner end of the second connecting rod is connected to the rod-shaped main body, and the outer end is connected to the second end of the intermediate rod.

[0015] It also includes an extension rod, one end of which is connected to the second end of the intermediate rod, and the other end extends toward the helical blade and is located above the helical blade. The other end of the extension rod forms a certain angle with the intermediate rod.

[0016] To achieve the first objective mentioned above, this utility model provides the following technical solution:

[0017] A powder discharge screw, comprising:

[0018] Rod-shaped main body;

[0019] Helical blades, spirally wound around the rod-shaped body; and

[0020] A multi-segment rod is located above the helical blade. The multi-segment rod is connected to the rod-shaped body to form a closed structure. The multi-segment rod is not coplanar.

[0021] By forming a closed structure, the structural strength can be significantly improved, making it less prone to deformation when the screw discharges powder and rotates to push the powder. Furthermore, the non-coplanar structure can create multi-dimensional disturbance zones in space, improving the material flowability and thus enhancing the discharge efficiency. The hollow structure in the middle of the closed structure reduces the rotational resistance of the screw discharger. Therefore, by using a multi-segment non-coplanar and closed rod structure for pushing material, while ensuring structural stability and smooth rotation, material accumulation in the powder hopper can be effectively prevented. Thus, the screw discharger with these multi-segment rods can achieve better discharge performance, effectively solving the problem of poor discharge efficiency in existing screw dischargers.

[0022] In some technical solutions, the multi-segment rod portion includes:

[0023] At least one intermediate rod, the intermediate rod comprising a first end and a second end connected to each other, the first end being located in front of the second end in the direction of rotation corresponding to the rotation direction when the powder discharge screw rotates to discharge material; and the first end being located above the second end;

[0024] A connecting rod connects the rod-shaped main body to the intermediate rod.

[0025] In some technical solutions, the connecting rod includes:

[0026] The first connecting rod has its inner end connected to the rod-shaped main body and its outer end connected to the first end of the intermediate rod body.

[0027] The second connecting rod has its inner end connected to the rod-shaped main body and its outer end connected to the second end of the intermediate rod.

[0028] In some technical solutions, an extension rod is also included, one end of which is connected to the second end of the intermediate rod body, and the other end extends toward the helical blade and is located above the helical blade, with the other end of the extension rod forming a certain angle with the intermediate rod body.

[0029] In some technical solutions, a pusher is also included, which is located at the bottom of the rod-shaped body and between the bottom and the adjacent helical blades in the extending direction of the rod-shaped body. The pusher is at least partially fixed relative to the rod-shaped body and / or the helical blades, and the pusher and the blade trailing edge of the helical blades are offset in the circumferential direction of the rod-shaped body.

[0030] In some technical solutions, the pushing part is a pushing plate, including a radially extending edge extending radially along the rod-shaped body and an axially extending edge extending axially along the rod-shaped body. The radially extending edge is flush with the bottom surface of the rod-shaped body, and the axially extending edge is flush with the radial outer side of the helical blade; and / or, the pushing part and the blade tail edge are located on opposite sides of the rod-shaped body.

[0031] To achieve the second objective mentioned above, this utility model also provides a powder discharging device, which includes any of the aforementioned powder discharging screws, a powder hopper, a discharge channel, and a screw drive mechanism. The discharge channel is cylindrical and connected to the outlet of the powder hopper. The helical blades of the powder discharging screw extend from the powder hopper to the discharge channel. The screw drive mechanism is mounted on the top of the powder hopper and is used to drive the powder discharging screw to rotate. Since the aforementioned powder discharging screw has the above-mentioned technical effects, the powder discharging device with this powder discharging screw should also have corresponding technical effects. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of the powder discharge screw in an inverted state according to an embodiment of the present invention;

[0034] Figure 2 for Figure 1 An enlarged structural diagram at point A;

[0035] Figure 3 This is a schematic diagram of the structure of the powder discharge screw provided in an embodiment of the present utility model;

[0036] Figure 4 This is a schematic diagram of the powder dispensing device in an inverted state according to an embodiment of the present invention;

[0037] Figure 5 for Figure 4 A magnified structural diagram at point B;

[0038] Figure 6 This is a schematic diagram of the powder discharging device provided in an embodiment of the present utility model;

[0039] Figure 7 A top view of the powder dispensing device provided in an embodiment of this utility model;

[0040] Figure 8 for Figure 7 A schematic diagram of the cross-sectional structure at point CC;

[0041] Figure 9 This is a schematic diagram showing the distribution of the blade trailing edge and the pusher part staggered in the circumferential direction in an embodiment of this utility model.

[0042] The following labels are shown in the attached diagram:

[0043] 1. Rod-shaped main body; 2. Spiral blades; 3. Pushing section; 4. Multi-section rod section; 5. Powder hopper; 6. Discharge channel; 7. Support rod.

[0044] Bottom 1-1, bottom surface 1-2;

[0045] Blade trailing edge 2-1, radial outer edge 2-2;

[0046] Radial extension edge 3-1, axial extension edge 3-2, upper edge 3-3, inner edge 3-4;

[0047] Intermediate rod 4-1, first end 4-11, second end 4-12, first section 4-13, second section 4-14;

[0048] Connecting rod 4-2, first connecting rod 4-21, second connecting rod 4-22;

[0049] Extension rod 4-3. Detailed Implementation

[0050] This utility model discloses a variety of powder discharge screws, which can effectively solve the problem of poor material discharge effect of powder discharge screws.

[0051] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0052] Please see Figures 1-8 , Figure 1 This is a schematic diagram of the structure of the powder discharge screw in an inverted state according to an embodiment of the present invention; Figure 2 for Figure 1 An enlarged structural diagram at point A; Figure 3 This is a schematic diagram of the structure of the powder discharge screw provided in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the powder dispensing device in an inverted state according to an embodiment of the present invention; Figure 5 for Figure 4 A magnified structural diagram at point B; Figure 6 This is a schematic diagram of the powder discharging device provided in an embodiment of the present utility model; Figure 7 A top view of the powder dispensing device provided in an embodiment of this utility model; Figure 8 for Figure 7 A schematic diagram of the cross-sectional structure at point CC; Figure 9 This is a schematic diagram showing the distribution of the blade trailing edge and the pusher part staggered in the circumferential direction in an embodiment of this utility model.

[0053] In some embodiments, a powder discharge screw is provided for pushing powder out of a powder hopper. Specifically, the powder discharge screw can be a feeding screw, as shown in the attached figure. Figure 3 As shown, materials are conveyed downwards. Specifically, see attached... Figure 1 , 3 The powder discharge screw shown mainly consists of a rod-shaped body 1 and helical blades 2, wherein... Figure 1 The powder discharge screw in the middle is compared with the attached Figure 3 The powder discharge screw is set up upside down.

[0054] The spiral blade 2 is spirally wound around the rod-shaped body 1, and the two are fixed relative to each other. This allows the spiral blade 2 to rotate synchronously when the rod-shaped body 1 rotates. The rotation of the spiral blade 2 pushes the powder along the discharge direction to achieve discharge. The spiral blade 2 can be right-handed, but is not limited to this. The spiral blade 2, at least when rotating in one direction, can push the powder along the axial direction, as shown in the attached figure. Figure 3 As shown, rotating around the direction indicated by the arrow can push the powder out in the discharge direction. The connection between the spiral blade 2 and the rod-shaped body 1 can be integrally formed or welded; there is no limitation on this.

[0055] In some embodiments, as shown in the appendix Figure 1 As shown, the powder discharge screw can be further provided with a pusher section 3 on the basis of the rod-shaped body 1 and the spiral blade 2, and can be provided with or without the multi-segment rod section 4 in any of the following embodiments.

[0056] The pusher section 3 is located in the bottom 1-1 region of the rod-shaped body 1 to output material at the bottom 1-1. The bottom 1-1 of the rod-shaped body 1 can be understood as one end or the discharge end in the discharge direction. Specifically, the pusher section 3 is located between the bottom 1-1 of the rod-shaped body 1 and the adjacent spiral blades 2 at the bottom 1-1 in the extending direction of the rod-shaped body 1, as shown in the attached diagram. Figure 3 and Figure 9 As shown, when the discharge direction is downward, the lower end is the bottom 1-1. The pusher 3 is located between the bottom surface 1-2 (or the plane where the bottom surface 1-2 is located) of the rod-shaped body 1 and the adjacent spiral blade 2 in the discharge direction to avoid the problem of poor discharge in the bottom 1-1 area.

[0057] The pusher part 3 is at least partially fixed relative to the rod-shaped body 1 and / or the helical blade 2, that is, the pusher part 3 may be fixedly connected only to the rod-shaped body 1, or only to the helical blade 2; or it may be as shown in the attached figure. Figure 1 As shown, the pusher part 3 is not only fixedly connected to the rod-shaped main body 1, but also fixedly connected to the spiral blade 2, so as to achieve a better fixing effect, reduce the generation of gaps, and prevent material accumulation. (See attached diagram) Figure 2 As shown, the upper edge 3-3 of the pusher part 3 is connected to the spiral blade 2 and fixedly connected thereto; the inner edge 3-4 of the pusher part is connected to the side of the rod-shaped body 1 and fixedly connected thereto.

[0058] Preferably, the pusher part 3 and the trailing edge 2-1 of the spiral blade 2 are offset in the circumferential direction of the rod-shaped body 1, so that when the powder discharge screw rotates, the pusher part 3 and the trailing edge 2-1 of the spiral blade 2 work together, that is, in the direction of rotation, the trailing edge 2-1 of the spiral blade 2 is in front, and the pusher part 3 pushes the material behind, which can avoid the accumulation of material on the rear side of the trailing edge 2-1.

[0059] In the aforementioned powder discharge screw, in addition to the material pushing by the spiral blades 2, a pushing part 3 is added to the discharge end of the spiral blades 2. The pushing part 3 is located between the bottom surface 1-2 of the rod-shaped body 1 and the adjacent spiral blades. The pushing part 3 and the blade tail edge 2-1 of the spiral blades 2 are staggered in the circumferential direction to avoid material accumulation at the bottom of the powder discharge screw. This also ensures that the pushing part 3 and the blade tail edge 2-1 of the spiral blades 2 are kept at an appropriate distance, allowing them to perform their respective operations on opposite sides of the rod-shaped body 1 without mutual interference. This ensures the discharge and pushing processes are carried out, thereby improving the discharge effect. Therefore, this powder discharge screw can effectively solve the problem of poor discharge effect of powder discharge screws.

[0060] In some embodiments, the pusher section 3 can be a pusher plate, as shown in the attached figure. Figure 2 As shown, the feeding section 3 includes a radially extending edge 3-1 extending radially along the rod-shaped body 1 and an axially extending edge 3-2 extending axially along the rod-shaped body 1. The radially extending edge 3-1 is flush with the bottom surface 1-2 of the rod-shaped body 1, while the axially extending edge 3-2 is flush with the radially outer side 2-2 of the spiral blade 2. This flush arrangement achieves a balance between optimal powder scraping effect and ease of use. (In conjunction with the attached...) Figure 5 As shown, the radially extending edge 3-1 is used to approach or contact the upper side of the support rod 7 (its function is described in detail below) so as to scrape the powder on the support rod 7; while the axially extending edge 3-2 is used to approach or near the inner wall of the discharge channel 6 (its function is described in detail below) so as to scrape the inner wall of the discharge channel 6.

[0061] Preferably, the radially extending edge 3-1 may also be flush with the bottom surface 1-2 of the rod-shaped body 1, so that the bottom surface of the powder discharge screw is a planar structure. In some embodiments, the radially extending edge 2-2 and the axially extending edge 3-2 may not be flush with the corresponding structure, as long as they can achieve their respective functions.

[0062] In some embodiments, as shown in the appendix Figure 2 As shown, the pusher 3 and the blade trailing edge 2-1 of the spiral blade 2 can be located on opposite sides of the rod-shaped body 1, so that the two are staggered as much as possible in the circumferential direction of the rod-shaped body 1, so that the pusher 3 and the blade trailing edge 2-1 of the spiral blade 2 can maintain an appropriate distance, and can perform their respective work on opposite sides of the rod-shaped body 1 without mutual interference, ensuring the discharge and push of materials and reducing material accumulation.

[0063] In some embodiments, as shown in the appendix Figure 1 , 3 As shown, the powder discharge screw is further provided with multiple rod sections 4 on the basis of the rod-shaped main body 1 and the spiral blade 2, and the pusher section 3 may or may not be provided in any of the above embodiments.

[0064] Specifically, the multi-segment rod 4 is located on the opposite side of the discharge direction of the spiral blade 2, as shown in the attached figure. Figure 3 As shown, the multi-segment rod 4 is positioned above the spiral blade 2, and the discharge direction of the spiral blade 2 is downward. (See attached diagram) Figure 8 As shown, and in conjunction with the appendix Figure 1 In use, the multi-segment rod 4 is located inside the powder hopper 5, while the spiral blade 2 is located inside the discharge channel 6. The multi-segment rod 4 can be used to feed material to the spiral blade 2, improving the turbulence effect on the powder and the discharge effect. The multi-segment rod 4 and the rod-shaped main body 1 are connected to form a closed structure, and the multi-segment rod 4 are not coplanarly arranged, that is, the segments of the rod are not located in the same plane, forming a non-coplanar structure.

[0065] By forming a closed structure, the structural strength can be significantly improved, making it less prone to deformation when the screw discharges powder and rotates to push the powder. Furthermore, the non-coplanar structure can create multi-dimensional disturbance zones in space, improving the material flowability and thus enhancing the discharge efficiency. The hollow structure in the middle of the closed structure reduces the rotational resistance of the screw discharger. Therefore, by using a multi-segment non-coplanar and closed rod structure for pushing material, while ensuring structural stability and smooth rotation, material accumulation in the powder hopper can be effectively prevented. Thus, the screw discharger with these multi-segment rods can achieve better discharge performance, effectively solving the problem of poor discharge efficiency in existing screw dischargers.

[0066] It should be noted that the non-coplanar structure described in this embodiment can be understood as follows: the multiple rods 4 are each regarded as line segments without width and thickness, and the projections of the multiple rods 4 on any plane do not coincide.

[0067] In some embodiments, the multi-segment rod may include at least one intermediate rod 4-1 and a connecting rod 4-2.

[0068] Details are as attached Figure 1 , 3 As shown, the intermediate rod 4-1 includes a first end 4-11 and a second end 4-12 connected to each other. The first end 4-11 is located in front of the second end 4-12 in the direction of rotation when the powder discharge screw rotates to discharge material; and the first end 4-11 is above the second end 4-12. The direction of rotation is shown in the attached diagram, with the arrow pointing in the direction of rotation and forward. During rotation, the front end is above and the rear end is below, giving the intermediate rod 4-1 a downward pressing effect for better powder delivery.

[0069] Connecting rod 4-2 connects the rod-shaped main body 1 and the intermediate rod 4-1, serving as a connecting element. It should be noted that multiple connecting rods 4-2 can be provided, as shown in the attached diagram. Figure 3 As shown, two connecting rods 4-2 (first connecting rod 4-21 and second connecting rod 4-22) are provided, and the two connecting rods 4-2 are arranged axially.

[0070] In some embodiments, as shown in the appendix Figure 1 , 3 As shown, the connecting rod 4-2 can include a first connecting rod 4-21 and a second connecting rod 4-22.

[0071] For details, see attached. Figure 3 As shown, the inner end of the first connecting rod 4-21 is connected to the rod-shaped main body 1, and the outer end is connected to the first end 4-11 of the intermediate rod 4-1. The inner end of the second connecting rod 4-22 is connected to the rod-shaped main body 1, and the outer end is connected to the second end 4-12 of the intermediate rod 4-1. The first connecting rod 4-21 and the second connecting rod 4-22 provide better stability to the intermediate rod 4-1.

[0072] Furthermore, the first connecting rod 4-21 can be arranged perpendicularly to the rod-shaped body 1; while the second connecting rod 4-22 is arranged at an angle relative to the rod-shaped body 1, with its outer end inclined towards the discharge direction compared to its inner end. By staggering the arrangement, the first connecting rod 4-21 can play a role in stratifying the powder and reducing rotational resistance, while the second connecting rod 4-22, because it is inclined towards the discharge direction, has a downward pushing effect.

[0073] In some embodiments, as shown in the appendix Figure 1 , 3 As shown, and in conjunction with the appendix Figure 8 The powder discharge screw also includes an extension rod 4-3, one end of which is connected to the second end of the intermediate rod 4-1, and the other end extends toward the spiral blade 2 and is located above the spiral blade 2, rather than inside the discharge channel 6, but extends toward the spiral blade 2, so as to facilitate pushing the powder to move in the discharge direction and improve the discharge effect.

[0074] As attached Figure 8 As shown, the other end of the extension rod 4-3 forms a certain angle α with the middle rod 4-1 to achieve a better material pushing effect. The specific size of the angle α is not limited.

[0075] For details, see attached. Figure 8 As shown, the intermediate rod 4-1 and the extension rod 4-3 are both used to abut against the inner wall of the powder hopper 5. The intermediate rod 4-1 includes a first section 4-13 and a second section 4-14. The shape of the intermediate rod 4-1 is adapted to the shape of the corresponding powder hopper 5. The powder hopper 5 includes a cylindrical hopper and a conical hopper. The first section 4-13 abuts against the inner wall of the cylindrical hopper, while the second section 4-14 and the extension rod 4-3 both contact the inner wall of the conical hopper, which is beneficial for scraping the powder on the hopper wall of the powder hopper 5.

[0076] Based on the powder discharge screw provided in the above embodiments, this utility model also provides a powder discharge device, which includes any one of the powder hoppers, a discharge channel, a drive mechanism, and a powder discharge screw from any one of the above embodiments, wherein the drive mechanism is used to drive the powder discharge screw to rotate relative to the powder hopper. Since this powder discharge device uses the powder discharge screw from the above embodiments, please refer to the above embodiments for the beneficial effects of this powder discharge device.

[0077] The drive mechanism is used to drive the powder discharge screw to rotate relative to the powder hopper. Specifically, there are two examples: In one example, the powder hopper is stationary relative to the outer shell of the powder discharge device, while the drive mechanism drives the powder discharge screw to rotate relative to the outer shell, and thus rotates relative to the powder hopper; In another example, the powder discharge screw is stationary relative to the outer shell, while the drive mechanism drives the powder hopper to rotate relative to the outer shell, so that the powder hopper rotates relative to the powder discharge screw.

[0078] Specifically, the drive mechanism can be a screw drive structure, which is installed on the top of the powder hopper and used to drive the powder discharge screw to rotate.

[0079] As attached Figure 4 , 6 As shown, the discharge channel 6 is cylindrical and connected to the outlet of the powder hopper 5 to discharge the powder.

[0080] And further combined with the appendix Figure 7 , 8As shown, the spiral blades 2 of the powder discharge screw extend from the powder bin 5 to the discharge channel 6 for discharging material in the discharge channel 6.

[0081] As attached Figure 4 , 5 As shown, and in conjunction with the appendix Figure 2 The discharge port of the discharge channel 6 is equipped with a support rod 7, and the bottom surface 1-2 of the rod-shaped body 1 of the powder discharge screw abuts against the support rod 7 for support.

[0082] As above, the radially extending edge 3-1 is used to approach or contact the upper side of the support rod 7 so as to scrape the powder on the support rod 7; while the axially extending edge 3-2 is used to approach or near the inner wall of the discharge channel 6 so as to scrape the inner wall of the discharge channel 6.

[0083] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0084] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A powder discharge screw, characterized in that, include: Rod-shaped main body (1); Helical blade (2), the helical blade (2) is helically wound around the rod-shaped body (1). The pusher (3) is located at the bottom (1-1) of the rod-shaped body (1) and between the bottom (1-1) and the adjacent spiral blades (2) in the extending direction of the rod-shaped body (1). The pusher (3) is at least partially fixed relative to the rod-shaped body (1) and / or the spiral blades (2). The pusher (3) and the blade trailing edge (2-1) of the spiral blades (2) are offset in the circumferential direction of the rod-shaped body (1).

2. The powder discharge screw according to claim 1, characterized in that, The pusher part (3) is a pusher plate, including a radially extending edge (3-1) extending radially along the rod-shaped body (1) and an axially extending edge (3-2) extending axially along the rod-shaped body (1). The radially extending edge (3-1) is flush with the bottom surface (1-2) of the rod-shaped body (1), and the axially extending edge (3-2) is flush with the radial outer side (2-2) of the spiral blade (2). And / or, the pusher part (3) and the blade tail edge (2-1) are located on opposite sides of the rod-shaped body (1).

3. The powder discharge screw according to claim 1, characterized in that, It also includes a multi-segment rod (4) located above the helical blade (2), the multi-segment rod (4) being connected to the rod-shaped body (1) to form a closed structure, and the multi-segment rod (4) being non-coplanar; The multi-segment rod (4) includes at least one intermediate rod body (4-1) and a connecting rod (4-2). The intermediate rod body (4-1) includes a first end (4-11) and a second end (4-12) connected to each other. The first end (4-11) is located in front of the second end (4-12) in the rotation direction corresponding to the rotation direction when the powder discharge screw rotates to discharge material. The first end (4-11) is located above the second end (4-12). The connecting rod (4-2) connects the rod-shaped body (1) and the intermediate rod body (4-1). The connecting rod (4-2) includes a first connecting rod (4-21) and a second connecting rod (4-22). The inner end of the first connecting rod (4-21) is connected to the rod-shaped main body (1), and the outer end is connected to the first end (4-11) of the intermediate rod body (4-1). The inner end of the second connecting rod (4-22) is connected to the rod-shaped main body (1), and the outer end is connected to the second end (4-12) of the intermediate rod body (4-1). It also includes an extension rod (4-3), one end of which is connected to the second end (4-12) of the intermediate rod body (4-1), and the other end extends toward the helical blade (2) and is located above the helical blade (2). The other end of the extension rod (4-3) forms a certain angle with the intermediate rod body (4-1).

4. A powder discharge screw, characterized in that, include: Rod-shaped main body (1); Helical blade (2) is helically wound around the rod-shaped body (1); and The multi-segment rod (4) is located above the helical blade (2). The multi-segment rod (4) is connected to the rod-shaped body (1) to form a closed structure. The multi-segment rod (4) is not coplanar.

5. The powder discharge screw according to claim 4, characterized in that, The multi-segment rod (4) includes: At least one intermediate rod (4-1), the intermediate rod (4-1) includes a first end (4-11) and a second end (4-12) connected to each other, the first end (4-11) is located in front of the second end (4-12) in the rotation direction corresponding to the rotation direction when the powder discharge screw rotates to discharge material; and the first end (4-11) is located above the second end (4-12); Connecting rod (4-2) connects the rod-shaped main body (1) to the intermediate rod body (4-1).

6. The powder discharge screw according to claim 5, characterized in that, The connecting rod (4-2) includes: The first connecting rod (4-21) has its inner end connected to the rod-shaped body (1) and its outer end connected to the first end (4-11) of the intermediate rod body (4-1). The second connecting rod (4-22) has its inner end connected to the rod-shaped body (1) and its outer end connected to the second end (4-12) of the intermediate rod (4-1).

7. The powder discharge screw according to claim 5, characterized in that, Also includes: An extension rod (4-3) has one end connected to the second end (4-12) of the intermediate rod body (4-1), and the other end extends toward the spiral blade (2) and is located above the spiral blade (2). The other end of the extension rod (4-3) forms a certain angle with the intermediate rod body (4-1).

8. The powder discharge screw according to claim 4, characterized in that, It also includes a pusher (3), which is located at the bottom (1-1) of the rod-shaped body (1) and between the bottom (1-1) and the adjacent spiral blades (2) in the extension direction of the rod-shaped body (1). The pusher (3) is at least partially fixed relative to the rod-shaped body (1) and / or the spiral blades (2). The pusher and the blade trailing edge (2-1) of the spiral blades (2) are offset in the circumferential direction of the rod-shaped body (1).

9. The powder discharge screw according to claim 8, characterized in that, The pusher part (3) is a pusher plate, including a radially extending edge (3-1) extending radially along the rod-shaped body (1) and an axially extending edge (3-2) extending axially along the rod-shaped body (1). The radially extending edge (3-1) is flush with the bottom surface (1-2) of the rod-shaped body (1), and the axially extending edge (3-2) is flush with the radial outer side (2-2) of the spiral blade (2). And / or, the pusher part (3) and the blade tail edge (2-1) are located on opposite sides of the rod-shaped body (1).

10. A powder dispensing device, characterized in that, include: Pink bin (5); The discharge channel (6) is connected to the outlet of the powder silo (5). The powder discharge screw is the powder discharge screw according to any one of claims 1-9, wherein the spiral blades (2) of the powder discharge screw extend from the powder hopper (5) to the discharge channel (6). A screw drive mechanism is installed on top of the powder hopper and is used to drive the powder discharge screw to rotate.

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