Feeding machine screw stable conveying structure and feeding machine

Abstract

The utility model discloses a feeding machine screw rod stable conveying structure and a feeding machine, and relates to the technical field of feeding conveying devices, the feeding machine screw rod stable conveying structure comprises a screw rod, a material storage part, a filtering part, an oilless bearing and a material discharging part, a material cavity is arranged in the material storage part, and the screw rod is rotatably arranged in the material cavity; the filtering piece is fixedly connected with a supporting column, the oilless bearing is arranged at one end of the screw rod, and the oilless bearing is rotationally connected with the supporting column; the discharging piece is provided with a material conveying opening, the material conveying opening communicates with the material cavity, and the filtering piece is arranged at the material conveying opening. According to the feeding machine screw rod stable conveying structure and the feeding machine, one end of the screw rod is fixedly connected with the transmission rod, the other end of the screw rod is rotationally connected with the supporting column on the filtering piece through the oilless bearing, the two ends of the screw rod are both fixedly supported, double-side supporting of the screw rod is achieved, and therefore rotation jumping of the screw rod in the movement process is reduced, and the feeding accuracy is optimized; and the conveying stability is improved, and metering of small-flow materials is met.

Description

Technical Field

[0001] The utility model relates to the technical field of feeding and conveying devices, in particular to a screw stable conveying structure of a feeder and a feeder. Background Art

[0002] A loss-in-weight feeder is a device for continuous feeding and metering, applicable to various granular, powdery and non-flowable materials. As an important part of the feeder, the screw plays a crucial role in the accuracy of metering. Most of the existing equipment can complete the conveying and metering of materials with large flow and low metering accuracy, but for products with small flow and high metering accuracy requirements, the metering requirements are often not met.

[0003] The loss-in-weight feeder is less used in the pharmaceutical field. At present, the screw in most feeders adopts a single-sided cantilever structure fixing form, and the screw on the discharge port side is suspended without support. Therefore, there are problems such as poor screw rotation stability and high flow rate fluctuation, and the existing equipment can no longer meet the metering accuracy requirements for small-flow and expensive active pharmaceutical ingredients. Therefore, there are still disadvantages and deficiencies in the prior art. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a screw stable conveying structure of a feeder and a feeder, which solves the technical problems that the screw in the current feeder mostly adopts a single-sided cantilever structure fixing form, with poor screw rotation stability, high flow rate fluctuation, and inability to meet the metering accuracy requirements.

[0005] To achieve the above purpose, the utility model provides a screw stable conveying structure of a feeder, including:

[0006] A screw;

[0007] A storage member with a material cavity inside, and the screw is rotatably arranged in the material cavity;

[0008] A filter member and an oil-free bearing, a support column is fixedly connected to the filter member, the oil-free bearing is arranged inside one end of the screw, and the oil-free bearing is rotatably connected to the support column;

[0009] A discharge member with a material conveying port, the material conveying port is communicated with the material cavity, and the filter member is arranged in the material conveying port;

[0010] Wherein, when the screw rotates, the material in the storage member is conveyed to the discharge member through the material conveying port and discharged.

[0011] Preferably, a spacer sleeve is arranged in the material conveying port, one end of the spacer sleeve abuts against the filter member, and when the storage member and the material conveying port of the discharge member are connected, the spacer sleeve tightly fixes the filter member.

[0012] Preferably, it also includes:

[0013] Drive motor;

[0014] A transmission shaft, fixedly connected to the output shaft of the drive motor;

[0015] A transmission rod connected to the transmission shaft through gear transmission;

[0016] Among them, one end of the transmission rod extends into the material cavity, one end of the screw is fixedly connected to the transmission rod, and one end of the screw away from the transmission rod extends into the feed port.

[0017] Preferably, it further comprises a fixing plate 1 and a fixing plate 2, wherein the fixing plate 1 and the fixing plate 2 are fixedly arranged, and the driving motor is fixedly installed on the fixing plate 1.

[0018] Preferably, the transmission shaft is rotatably connected to the first fixing plate via a first bearing, and the transmission shaft is rotatably connected to the second fixing plate via a second bearing.

[0019] Preferably, the transmission rod is rotatably connected to the first fixing plate via a third bearing, and the transmission rod passes through the second fixing plate and is rotatably connected to the second fixing plate.

[0020] Preferably, a wear-resistant sleeve is provided on the second fixing plate, and the wear-resistant sleeve is sleeved on the transmission rod.

[0021] Preferably, an end cover is fixedly connected to the second fixing plate, the end cover is located on the side of the second fixing plate away from the first fixing plate, a fourth bearing is arranged on the end cover, and the transmission rod is rotatably connected to the fourth bearing.

[0022] Preferably, the material storage member is fixedly connected to the end cover and the material discharging member by fasteners.

[0023] The utility model also provides a feeder, comprising the feeder screw stable conveying structure provided by any of the above technical solutions.

[0024] Compared with the above-mentioned background technology, in the stable conveying structure of the feeder screw provided by the utility model, the screw is rotatably connected to the support column on the filter element through an oil-free bearing. The support column provides support for the screw, which can prevent one end of the screw from being suspended in the air without fixed support, thereby reducing the rotational jump of the screw during movement, realizing double-sided support of the screw, optimizing feeding accuracy, improving conveying stability, and meeting the metering needs of small flow materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 A schematic cross-sectional view of a feeder screw stable conveying structure provided by an embodiment of the utility model;

[0027] Figure 2 for Figure 1 The diagram shows the connection structure between the oil-free bearing and the filter element in the feeder screw stable conveying structure.

[0028] Figures 1 to 2 The reference numerals in the accompanying drawings are: 10, fixed plate one; 101, first bearing; 102, third bearing; 11, fixed plate two; 111, second bearing; 112, wear-resistant sleeve; 113, end cover; 1131, fourth bearing; 13, driving motor; 14, transmission shaft; 141, first gear; 15, transmission rod; 16, material storage piece; 161, first connecting part; 162, second connecting part; 1621, material chamber; 17, fastener; 18, sealing ring; 19, discharge piece; 191, feed port; 20, filter element; 201, support column; 21, screw; 211, oil-free bearing; 22, spacer; 23, anti-bridging stirring blade. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] The utility model provides a feeder screw stable conveying structure, in which the screw 21 is fixedly supported on both sides, so that the screw 21 rotates stably, reduces the vibration of the screw 21, can realize the stable conveying of solid powder, and prevents flow fluctuation caused by the rotation vibration of the screw 21.

[0032] Please refer to Figure 1, the screw stable conveying structure of the feeder provided by the present utility model includes a screw 21, a filter member 20, an oil-free bearing 211, a material storage member 16 and a discharge member 19. A material cavity 1621 is arranged inside the material storage member 16, and the screw 21 is rotatably arranged in the material cavity 1621; a support column 201 is fixedly connected to the filter member 20, the oil-free bearing 211 is arranged inside one end of the screw 21, and the oil-free bearing 211 is rotatably connected to the support column 201; the discharge member 19 is provided with a material conveying port 191, the material conveying port 191 is communicated with the material cavity 1621, and the filter member 20 is arranged inside the material conveying port 191;

[0033] Among them, when the screw 21 rotates, the material in the material storage member 16 is conveyed to the discharge member 19 through the material conveying port 191 and discharged.

[0034] In this embodiment, the filter member 20 is a plate-like structure provided with filter holes. A support column 201 is arranged on the side surface of the filter member 20, and the support column 201 is cylindrical. The oil-free bearing 211 is arranged inside one end of the screw 21, and the oil-free bearing 211 is rotatably connected to the support column 201 on the side surface of the filter member 20.

[0035] During operation, the screw 21 rotates, and the oil-free bearing 211 on the screw 21 rotates accordingly. The oil-free bearing 211 is rotatably connected to the support column 201 on the filter member 20, and the support column 201 provides support for the screw 21, thereby fixedly supporting one end of the screw 21 on the filter member 20 and preventing the screw 21 from being suspended. Through the above setting method, the screw 21 is fixedly supported, thereby reducing the rotational runout during the movement of the screw 21, optimizing the feeding accuracy, improving the conveying stability, and meeting the metering requirements of small-flow materials.

[0036] Moreover, the oil-free bearing 211 has a small friction coefficient, which can reduce the friction between the oil-free bearing 211 and the support column 201 during rotation. The oil-free bearing 211 is lubrication-free during use, which can avoid shutdown caused by maintenance.

[0037] Please refer to Figure 1 , in this embodiment, the material storage member 16 includes a first connection portion 161 and a second connection portion 162. The first connection portion 161 and the second connection portion 162 are connected. The first connection portion 161 is generally a hollow hemispherical structure, and the second connection portion 162 is generally a horizontally arranged tubular structure. The inside of the first connection portion 161 is used to hold materials. The bottom of the first connection portion 161 is communicated with the top of the second connection portion 162. The materials inside the first connection portion 161 can fall into the second connection portion 162. The inside of the second connection portion 162 forms a material cavity 1621, and the screw 21 is rotatably arranged in the material cavity 1621 inside the second connection portion 162, and the materials are conveyed as the screw 21 rotates.

[0038] In addition, an anti - bridging stirring blade 23 is provided inside the first connecting portion 161 of the storage member 16. By providing the anti - bridging stirring blade 23, it effectively prevents the material from accumulating in the first connecting portion 161 of the storage member 16 to form an arch structure and blocking the normal flow of the material, ensuring the smooth flow of the material.

[0039] The above provides a structural form of the storage member 16, which is not a limitation on the storage member 16. In other embodiments, the storage member 16 can adopt other structural forms, which are not specifically limited.

[0040] Please refer to Figure 1 and Figure 2 , a spacer sleeve 22 is provided in the material delivery port 191. One end of the spacer sleeve 22 abuts against the filter member 20. When the storage member 16 is connected to the material delivery port 191 of the discharge member 19, the spacer sleeve 22 tightly abuts and fixes the filter member 20.

[0041] Specifically, in this embodiment, the spacer sleeve 22 is generally in a tubular structure. One end of the spacer sleeve 22 abuts against the filter member 20, and the other end of the spacer sleeve 22 abuts against one end of the second connecting portion 162. After the second connecting portion 162 and the material delivery port 191 of the discharge member 19 are fixedly connected by a fastener 17, the filter member 20 is tightly abutted by the spacer sleeve 22 to realize the fixation of the filter member 20.

[0042] With such a setting, by removing the fastener used to fixedly connect the second connecting portion 162 and the discharge member 19, the spacer sleeve 22 can be loosened. By removing the spacer sleeve 22 from the material delivery port 191, the filter member 20 can be taken out from the material delivery port 191, thus facilitating the replacement of the filter member 20.

[0043] One end of the second connecting portion 162 is connected to the material delivery port 191 of the discharge member 19 through a fastener 17, thereby connecting the material cavity 1621 and the interior of the discharge member 19 through the material delivery port 191. Specifically, the fastener 17 is a clamp. By using the clamp to realize the fixed connection between the second connecting portion 162 and the discharge member 19, such a setting can ensure good sealing between the second connecting portion 162 and the material delivery port 191 of the discharge member 19, and avoid the waste of materials caused by the leakage of materials from the gap between the second connecting portion 162 and the material delivery port 191 from the material cavity 1621.

[0044] Please refer to Figure 1 , the stable conveying structure of the feeding machine screw provided by the present utility model further includes a driving motor 13, a transmission shaft 14 and a transmission rod 15. One end of the transmission rod 15 away from the third bearing 102 extends into the material cavity 1621. One end of the screw 21 is fixedly connected to the transmission rod 15, and one end of the screw 21 away from the transmission rod 15 extends into the material delivery port 191.

[0045] In this embodiment, one end of the screw rod 21 close to the transmission rod 15 is hollow, and one end of the transmission rod 15 away from the third bearing 102 extends into the screw rod 21 and is fixedly connected to the screw rod 21 .

[0046] Specifically, the feeder screw stable conveying structure provided by the utility model includes a fixed plate 10 and a fixed plate 2 11, and the fixed plate 10 and the fixed plate 2 11 are both fixedly arranged, and the fixed plate 10 and the fixed plate 2 11 are arranged in parallel.

[0047] The drive motor 13 is fixedly mounted on the fixing plate 10, and the output shaft of the drive motor 13 is fixedly connected to the transmission shaft 14. As the drive motor 13 works, the transmission shaft 14 is driven to rotate. The fixing plate 10 is provided with a first bearing 101, and the transmission shaft 14 is rotationally connected to the first fixing plate through the first bearing 101. The fixing plate 2 is provided with a second bearing 111, and the end of the transmission shaft 14 away from the drive motor 13 is rotationally connected to the fixing plate 2 11 through the second bearing 111.

[0048] A first gear 141 is installed on the transmission shaft 14, and a second gear is installed on the transmission rod 15. The first gear 141 meshes with the second gear. As the transmission shaft 14 rotates, the meshing of the first gear 141 and the second gear drives the transmission rod 15 to rotate. The transmission rod 15 is rotatably connected to the fixing plate 10 and the fixing plate 2 11. The fixing plate 10 is provided with a third bearing 102. One end of the transmission rod 15 is rotatably connected to the fixing plate 10 through the third bearing 102; the other end of the transmission rod 15 passes through the fixing plate 2 11 and is rotatably connected to the fixing plate 2 11.

[0049] In some embodiments, a wear-resistant sleeve 112 is provided on the fixing plate 11, and the wear-resistant sleeve 112 is sleeved on the transmission rod 15. In this way, during the rotation of the transmission rod 15, the wear-resistant sleeve 112 can protect and reduce wear, thereby extending the service life.

[0050] Please refer to Figure 1 An end cover 113 is fixedly connected to the fixing plate 11, and the end cover 113 is located on the side of the fixing plate 11 away from the fixing plate 1 10. A fourth bearing 1131 is provided on the end cover 113, and the transmission rod 15 is rotatably connected to the fourth bearing 1131.

[0051] In this embodiment, one end of the second connecting portion 162 is connected to the end cover 113 via a fastener 17. Specifically, the fastener 17 is a clamp, and a fixed connection between the second connecting portion 162 and the end cover 113 is achieved through the clamp. Such a configuration can ensure good sealing between the second connecting portion 162 and the end cover 113, thereby preventing material from leaking from the gap between the second connecting portion 162 and the end cover 113 through the material cavity 1621, thereby causing material waste.

[0052] In addition, a sealing ring 18 is provided inside the end cap 113. The sealing ring 18 is an O-ring made of rubber. The sealing ring 18 can seal the gap between the drive rod 15 and the inside of the end cap 113, thereby preventing the material from entering the inside of the end cap 113 through the gap between the drive rod 15 and the end cap 113 from the material chamber 1621, ensuring the normal operation of the drive rod 15 and the third bearing 102.

[0053] The working process of the stable screw conveying structure of the feeder provided by the present utility model is as follows:

[0054] Start the drive motor 13. The drive motor 13 drives the transmission shaft 14 to rotate. Due to the meshing of the first gear 141 and the second gear, the transmission shaft 14 drives the drive rod 15 to rotate. As the drive rod 15 rotates, it drives the screw 21 to rotate. The screw 21 conveys the material in the storage cavity of the second connecting portion 162 of the storage member 16 forward. The material enters the discharging member 19 from the storage cavity through the material conveying port 191 and is finally discharged through the discharging member 19, realizing the conveying of the material.

[0055] In the stable screw conveying structure of the feeder provided by the present utility model, one end of the screw 21 is fixedly connected to the drive rod 15. The drive rod 15 is rotatably connected to the first fixing plate 10 and the second fixing plate 11 through the third bearing 102 and the fourth bearing 1131 respectively. The other end of the screw 21 is rotatably connected to the support column 201 on the filter member 20 through the oil-free bearing 211. The support column 201 provides support for the screw 21, thereby mounting the other end of the screw 21 on the filter member 20. Through the above setting method, both ends of the screw 21 are fixedly supported, realizing the double-sided support of the screw 21, thereby reducing the rotational runout during the movement of the screw 21, optimizing the feeding accuracy, improving the conveying stability, and meeting the metering of small-flow materials. The filter member 20 is fixed by the abutting action of the spacer sleeve 22 on the filter member 20. The filter member 20 is convenient to disassemble and assemble, and the cleaning and replacement of the filter member 20 can be quickly realized during maintenance, improving the work efficiency.

[0056] The present utility model also provides a feeder, including the stable screw conveying structure of the feeder provided in any of the above embodiments. The feeder includes all the technical features of the stable screw conveying structure of the feeder, and thus can solve the same technical problems and produce the same technical effects.

[0057] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0058] In this article, specific examples are used to elaborate on the principle and implementation mode of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the present utility model.

Claims

1. A feeder screw stable conveying structure, characterized in that: include: Screw; A material storage member, wherein a material cavity is provided inside, and the screw is rotatably arranged in the material cavity; A filter and an oil-free bearing, wherein the filter is fixedly connected to a support column, the oil-free bearing is arranged in one end of the screw, and the oil-free bearing is rotatably connected to the support column; A material discharging member is provided with a material delivery port, the material delivery port is communicated with the material cavity, and the filter is arranged in the material delivery port; When the screw is rotated, the material in the material storage part is transported to the material discharging part through the material delivery port and discharged.

2. The feeder screw stable conveying structure according to claim 1 is characterized in that: A spacer sleeve is arranged in the material delivery port, and one end of the spacer sleeve abuts against the filter element. When the material storage element is connected to the material delivery port of the material discharge element, the spacer sleeve abuts against and fixes the filter element.

3. The feeder screw stable conveying structure according to claim 1 is characterized in that: Also includes: Drive motor; A transmission shaft, fixedly connected to the output shaft of the drive motor; A transmission rod connected to the transmission shaft through gear transmission; Among them, one end of the transmission rod extends into the material cavity, one end of the screw is fixedly connected to the transmission rod, and one end of the screw away from the transmission rod extends into the feed port.

4. The feeder screw stable conveying structure according to claim 3 is characterized in that: It also includes a fixing plate 1 and a fixing plate 2, wherein the fixing plate 1 and the fixing plate 2 are fixedly arranged, and the driving motor is fixedly installed on the fixing plate 1.

5. The feeder screw stable conveying structure according to claim 4 is characterized in that: The transmission shaft is rotatably connected to the first fixing plate via a first bearing, and the transmission shaft is rotatably connected to the second fixing plate via a second bearing.

6. The feeder screw stable conveying structure according to claim 4, characterized in that: The transmission rod is rotatably connected to the first fixing plate via a third bearing, and the transmission rod passes through the second fixing plate and is rotatably connected to the second fixing plate.

7. The feeder screw stable conveying structure according to claim 6, characterized in that: The second fixing plate is provided with a wear-resistant sleeve, and the wear-resistant sleeve is sleeved on the transmission rod.

8. The feeder screw stable conveying structure according to claim 6, characterized in that: An end cover is fixedly connected to the second fixing plate, and the end cover is located on the side of the second fixing plate away from the first fixing plate. A fourth bearing is arranged on the end cover, and the transmission rod is rotatably connected to the fourth bearing.

9. The feeder screw stable conveying structure according to claim 8, characterized in that: The material storage member is fixedly connected to the end cover and the material discharging member via fasteners.

10. A feeding machine, characterized in that: The invention comprises the feeder screw stable conveying structure as described in any one of claims 1 to 9.

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