Gradient spiral powder batching device with heating function

Abstract

The gradual change spiral powder batching device with the heating function comprises a batching barrel, an opening in the top of the batching barrel is a feeding opening, a discharging opening is formed in the tail end of the bottom of the batching barrel, and a transverse gradual change spiral feeding rod is arranged at the end, close to the discharging opening, of the interior of the batching barrel; one end of the gradually-changed spiral feeding rod is fixedly connected with a connector, the connector extends to the outside of the batching barrel, the outer wall, close to the connector, of the batching barrel is provided with a threaded connector, the gear penetrates through the connecting cap to be connected to the connector, and the gear drives the gradually-changed spiral feeding rod to rotate when rotating. The heating outer layer is arranged at the lower half part of the batching barrel, so that powder in the barrel can be uniformly heated, the material caking phenomenon caused by a humid environment is effectively prevented, and the batching stability is improved; the gradually-changed spiral feeding rod is adopted, and the screw pitch which is gradually reduced is arranged at the discharging end of the gradually-changed spiral feeding rod, so that materials can be gradually compressed when approaching a discharging opening, and the accurate control over the discharging flow is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of powder batching equipment, in particular to a gradual change spiral powder batching device with heating function. BACKGROUND

[0002] In the technical field of powder batching equipment, the traditional spiral conveying type powder batching device is widely used in chemical industry, food industry, pharmaceutical industry and building material industry, etc., for realizing accurate metering and mixing of various powder materials. The core of this kind of device is usually to push the material from the storage bin to the designated discharge port through the rotating screw rod (auger). However, the existing technology exposes some inherent problems that affect the batching accuracy and stability in actual application.

[0003] Most devices adopt a screw rod with fixed pitch, and a discharge port is directly arranged at the end of the screw rod. In the conveying process, the material flow is easily disturbed by factors such as change of its own bulk density, pressure fluctuation in the bin and uneven filling rate of the screw, resulting in periodic or random pulsation of the discharge flow. Especially in the last conveying area close to the discharge port, due to the lack of effective flow stabilizing mechanism, the material is often discharged in a discontinuous or large-small state, which is difficult to meet the requirements of continuous or batch production process with strict proportioning accuracy.

[0004] Powder materials are generally hygroscopic and easily damp and caked when the environmental humidity is high. The flowability of the caked material is significantly reduced, which not only increases the resistance of the screw conveying, resulting in increased driving load and even jamming, but also causes discharge blockage or flow interruption, seriously damaging the continuity and accuracy of batching. The conventional device lacks effective online processing means, and often needs to be stopped for manual cleaning or auxiliary crushing, affecting the production efficiency. SUMMARY

[0005] In view of this, the present application proposes a gradual change spiral powder batching device with heating function to solve the problems in the technical background. Specifically, it includes the following contents: A gradual change spiral powder batching device with heating function, comprising a batching barrel, the top of the batching barrel is open as a feeding port, the bottom end of the batching barrel is provided with a discharge port, the inside of the batching barrel is provided with a transverse gradual change spiral feeding rod near one end of the discharge port, one end of the gradual change spiral feeding rod is fixedly connected with a connecting head, the connecting head extends to the outside of the batching barrel, the outer wall of the batching barrel near the connecting head is provided with a threaded interface, a threaded connecting cap is sleeved outside the threaded interface, a gear passes through the connecting cap, and the gear is connected to the connecting head through the connecting cap. When the gear rotates, the gradual change spiral feeding rod rotates.

[0006] Further, the lower half of the ingredient barrel is covered with a heating outer layer connected to a cable, which heats the powder material in the barrel without causing clumping due to weather, Further, the pitch of the gradually changing spiral feeding rod gradually decreases at the end close to the discharge port, which is more conducive to improving the discharge accuracy.

[0007] Further, the gradually changing spiral feeding rod is provided with a protrusion at the end away from the connector, and the inner wall of the ingredient barrel is provided with an embedded groove, the protrusion is embedded in the embedded groove, and the inner diameter of the embedded groove is greater than the inner diameter of the protrusion, so that the protrusion can rotate in the embedded groove.

[0008] The above technical scheme has the following beneficial effects: The present application can uniformly heat the powder in the barrel by setting a heating outer layer on the lower half of the ingredient barrel, effectively prevent material clumping caused by environmental humidity, ensure material flowability, and improve ingredient stability. The gradually changing spiral feeding rod and the gradually decreasing pitch at the discharge end can gradually compress the material close to the discharge port, accurately control the discharge flow, and significantly improve the ingredient accuracy. The cooperation of the protrusion and the embedded groove ensures stable rotation of the feeding rod, reduces wear and jam risk, and enhances the reliability and service life of the device. The overall structure is reasonable in design, easy to assemble, and suitable for precise ingredient occasions of various powder materials. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is an overall structure diagram of a gradually changing spiral powder ingredient device with heating function. Figure 2 It is an exploded structure diagram of a gradually changing spiral powder ingredient device with heating function. Figure 3 It is a bottom structure diagram of a gradually changing spiral powder ingredient device with heating function. Figure 4 It is a top structure diagram of a gradually changing spiral powder ingredient device with heating function. In the figure: 1-ingredient barrel; 2-discharge port; 3-heating outer layer; 4-gradually changing spiral feeding rod; 5-connector; 6-connector cap; 7-gear; 8-protrusion; 9-embedded groove; 10-threaded interface; 11-feeding port. DETAILED DESCRIPTION

[0010] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0011] See Figures 1-4 The illustrated gradual spiral powder dispensing device includes a dispensing barrel 1. The top of the dispensing barrel 1 is open as a feed inlet 11, and the bottom end of the dispensing barrel 1 has a discharge outlet 2. The interior of the dispensing barrel 1 is provided with a transverse gradual spiral feeding rod 4 near the discharge outlet 2. One end of the gradual spiral feeding rod 4 is fixedly connected to a connector 5. The connector 5 extends to the outside of the dispensing barrel 1. The outer wall of the dispensing barrel 1 near the connector 5 is provided with a threaded interface 10. A threaded connecting cap 6 is fitted over the threaded interface 10. A gear 7 passes through the connecting cap 6 and is connected to the connector 5. When the gear 7 rotates, it drives the gradual spiral feeding rod 4 to rotate.

[0012] The lower half of the mixing tank 1 is covered with a heating outer layer 3, which is connected to a cable. The heating outer layer 3 heats the powder material inside the mixing tank 1, preventing the powder material from becoming damp and clumping due to weather conditions. The pitch of the gradually decreasing spiral feed rod 4 near the discharge port 2 gradually decreases, which is more conducive to improving the discharge accuracy.

[0013] The end of the gradient spiral feed rod 4 away from the connector 5 is provided with a protrusion 8. The inner wall of the mixing barrel 1 is provided with an embedding groove 9. The protrusion 8 is embedded in the embedding groove 9. The inner diameter of the embedding groove 9 is larger than the inner diameter of the protrusion 8, so that the protrusion 8 can rotate in the embedding groove 9.

[0014] The heating outer layer 3 is composed of an annular electric heating film wrapped around the outer wall of the lower half of the mixing barrel 1. The electric heating film is connected by a power cable to heat the powder inside the mixing barrel 1.

[0015] The protrusion 8 is cylindrical, and the embedded groove 9 is a matching circular groove. In other embodiments, a wear-resistant bushing can be provided in the embedded groove 9 to ensure radial positioning while allowing a certain degree of axial slight floating, so as to compensate for manufacturing and installation errors, reduce stress concentration caused by thermal expansion or load changes, and ensure that the feeding rod runs smoothly for a long time.

[0016] The pitch of the gradually changing screw feeding rod 4 near the discharge port 2 is designed to decrease linearly, and the pitch of the last section is 1 / 3-1 / 2 of the initial pitch, and the length of the pitch change is 1 / 4-1 / 3 of the total length of the feeding rod. The gear 7 is fixed with the connector 5 through the key groove. The gap between the protrusion 8 and the embedded groove 9 is 0.5-1mm.

[0017] Before the device works, the powder is added to the batching barrel 1 through the top feed port 11. The outer layer 3 is powered to heat the material in the barrel uniformly to prevent caking. When batching, the external drive rotates the gradually changing screw feeding rod 4 through the gear 7 to push the material towards the bottom discharge port 2. The pitch of the feeding rod near the discharge port 2 decreases linearly, the material is gradually compressed, the flow is more stable, and precise discharge is achieved. The protrusion 8 at the distal end of the feeding rod cooperates with the embedded groove 9 on the barrel wall to provide support and allow for slight floating, ensuring smooth operation. The threaded cap is easy to disassemble, which is convenient for maintenance and cleaning. The device combines heating and gradually changing screw structure to effectively solve the problems of low precision and easy moisture of traditional feeding.

[0018] When the device works, the powder material to be batched is first poured into the barrel from the feed port 11 at the top of the batching barrel 1. The heating outer layer 3 located in the lower half of the batching barrel 1 is powered to generate heat, which is conducted to the barrel to gently heat the powder, thereby dispersing the moisture in the material to prevent it from being damp and caked, and keeping the material dry and loose. When batching is needed, the external drive rotates the gear 7, which is fixed with the connector 5 through the connection in the connector cap 6, thereby driving the gradually changing screw feeding rod 4 to rotate in the batching barrel 1. The spiral blades of the feeding rod push the material from the feed port 11 towards the bottom discharge port 2. Since the pitch of the feeding rod near the discharge port 2 gradually decreases, the material is gradually compressed and compacted during transportation, the flow becomes more stable and uniform, effectively reducing the pulsation phenomenon during discharge, thereby achieving high-precision quantitative discharge.

[0019] The protrusion 8 at the end of the feeding rod away from the connector 5 is embedded in the corresponding embedded groove 9 on the inner wall of the batching barrel 1. The inner diameter of the groove is slightly larger than the diameter of the protrusion 8, so that the protrusion 8 can rotate freely in the embedded groove 9, providing reliable distal support for the feeding rod, avoiding deflection or vibration due to excessive overhang, and reducing rotation friction to ensure smooth operation. The entire device has a compact structure, and through the cooperation of the threaded interface 10 and the connector cap 6, the feeding rod part is easy to install and disassemble, which is convenient for daily cleaning and maintenance. Compared with the traditional end discharge method, the device uses a bottom discharge design combined with a gradually changing pitch screw to make the material flow more stable near the discharge port 2, further improving the controllability and precision of batching.

[0020] The above describes the basic principles and main features of the present application, and those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application, and the scope of protection is defined by the appended claims and their equivalents.

Claims

1. A gradient spiral powder dispensing device with heating function, characterized in that, The container includes a mixing tank (1), the top of which is an open inlet (11), and the bottom end of which is an outlet (2). Inside the mixing tank (1), near the outlet (2), there is a transversely oriented spiral feeding rod (4). One end of the spiral feeding rod (4) is fixedly connected to a connector (5). The connector (5) extends to the outside of the mixing tank (1). The outer wall of the mixing tank (1) near the connector (5) is provided with a threaded interface (10). A threaded connector cap (6) is fitted on the outside of the threaded interface (10). A gear (7) passes through the connector cap (6). The gear (7) passes through the connector cap (6) and is connected to the connector (5). When the gear (7) rotates, it drives the spiral feeding rod (4) to rotate.

2. The gradient spiral powder dispensing device with heating function according to claim 1, characterized in that, The lower half of the mixing tank (1) is covered with a heating outer layer (3), which is connected to a cable. The heating outer layer (3) heats the powder material in the mixing tank (1), and the powder material will not become damp and clump due to weather conditions.

3. The gradient spiral powder dispensing device with heating function according to claim 1, characterized in that, The pitch of the gradually decreasing spiral feed rod (4) near the discharge port (2) gradually decreases, which is more conducive to improving the discharge accuracy.

4. A gradient spiral powder dispensing device with heating function according to claim 1 or 3, characterized in that, The end of the gradually changing spiral feed rod (4) away from the connector (5) is provided with a protrusion (8), and the inner wall of the mixing barrel (1) is provided with an embedding groove (9). The protrusion (8) is embedded in the embedding groove (9), and the inner diameter of the embedding groove (9) is larger than the inner diameter of the protrusion (8), so that the protrusion (8) can rotate in the embedding groove (9).

Images