Positive-pressure star-shaped cinder valve

Abstract

The utility model provides a positive pressure star-shaped cindervalve, including motor, coupling, valve body, protective casing and main shaft, the peripheral wall of main shaft is equipped with a plurality of impeller mounting blocks, impeller mounting blocks are arranged along the axle center circumference of main shaft, the impeller mounting blocks are equipped with impeller clamping groove, the impeller clamping groove is equipped with impeller main body, and the impeller main body is equipped with the shaft coupling. A connecting plate is arranged at the lower end of the impeller body, the connecting plate and the impeller body are connected into a whole, the impeller body and the impeller installation block are connected in a clamped mode through a clamping device, and the clamping device is arranged between the impeller body and the impeller installation block so that the impeller body can be firmly installed on a main shaft. The positive pressure impeller is simple in structure, can bear strong impact of materials and airflow in the positive pressure environment, is not prone to loosening or falling off, and improves operation stability and reliability of equipment under the condition that the impeller body is abraded.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a positive pressure star-shaped ash discharge valve. Background Technology

[0002] Rotary star-shaped ash discharge valves are a common type of powder conveying and unloading equipment, widely used in industries such as building materials, metallurgy, chemicals, and grain. The working principle of a rotary star-shaped ash discharge valve is based on a positive pressure conveying system where there is an airflow with pressure higher than atmospheric pressure within the pipeline. When the valve is in operation, the motor drives the impeller to rotate within the valve body via a reducer. Material enters the valve body from the top inlet, and under the impeller's push, the material is divided into relatively independent spaces and conveyed to the outlet as the impeller rotates. Simultaneously, the positive pressure airflow attempts to leak through the gap between the valve body and the impeller, but through a reasonable sealing design, leakage of airflow and material is effectively prevented, ensuring stable and continuous discharge of material under positive pressure.

[0003] However, in the existing technology, the connection between the impeller and the main shaft is basically fixed by welding. Under the impact of materials over a long period of time, wear is likely to occur, affecting the normal operation and service life of the equipment. Welded fixing is difficult to disassemble and replace, and the whole thing needs to be replaced, which is quite inconvenient.

[0004] To address this issue, a positive pressure star-shaped ash discharge valve is proposed. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problem that the impeller is welded and fixed to the main shaft, and wears and is damaged after long-term use, making it difficult to disassemble and replace, this utility model provides a positive pressure star-shaped ash discharge valve.

[0006] This utility model is achieved using the following technical solution:

[0007] A positive pressure star-shaped ash discharge valve includes a motor, a coupling, a valve body, a protective shell, and a main shaft. The output end of the motor is connected to the coupling, and the output end of the coupling is connected to the main shaft. The main shaft passes through the valve body. The protective shell is fixed between the valve body and the coupling. The valve body has an inlet at the top and an outlet at the bottom. End caps are provided on both side walls of the valve body and are fixedly connected to the valve body by bolts. Multiple impeller mounting blocks are provided on the outer peripheral wall of the main shaft. The impeller mounting blocks are arranged along the circumference of the main shaft axis and have impeller grooves.

[0008] The impeller slot is fitted with an impeller body, and the lower end of the impeller body is provided with a connecting plate. The connecting plate is integrated with the impeller body, and the impeller body and the impeller mounting block are clamped together by a clamping device.

[0009] Two clamping devices are provided, symmetrically arranged on both sides of the connecting plate. Each clamping device includes a receiving cavity, a limiting cover is provided at the top of the receiving cavity, the limiting cover is fixedly connected to the receiving cavity, a spring is provided inside the receiving cavity, one end of the spring is fixed to the bottom of the receiving cavity, and the other end of the spring is provided with a locking block, the locking block extends out of the receiving cavity through the limiting cover.

[0010] The impeller mounting block is provided with a through hole that matches the locking block.

[0011] The top of the impeller body is provided with a scraper slot, and a scraper body is installed in the scraper slot. The scraper body is fixedly connected to the impeller body by bolts.

[0012] The main shaft is fitted with two bearing seats, which are respectively located on the outside of the two end caps.

[0013] The present invention has the following advantages over the prior art:

[0014] 1. By setting a clamping device between the impeller body and the impeller mounting block, the impeller body can be firmly installed on the main shaft, which can withstand the strong impact of materials and airflow under positive pressure environment, and is not easy to loosen or fall off. In addition, it improves the operational stability and reliability of the equipment when the impeller body wears.

[0015] 2. A scraper body is installed on the top of the impeller body. The scraper body can promptly scrape off the material adhering to the inner wall of the valve body, preventing material accumulation and blockage, ensuring smooth material unloading, and improving conveying efficiency. Attached Figure Description

[0016] Figure 1 This is a top view of the present invention;

[0017] Figure 2 This is a side view of the present invention;

[0018] Figure 3 This is a utility model Figure 2 Sectional view along the AA direction;

[0019] Figure 4 This is a three-dimensional structural schematic diagram of the rotating device of this utility model;

[0020] Figure 5 This is an exploded three-dimensional structural diagram of the rotating device of this utility model;

[0021] Figure 6 This is a utility model Figure 5 Enlarged schematic diagram of the structure at point A in the middle;

[0022] Figure 7 This is a front view of the rotating device of this utility model;

[0023] Figure 8 This is a side view of the rotating device of this utility model;

[0024] In the diagram: 1. Motor; 2. Coupling; 3. Protective shell; 4. Main shaft; 5. Valve body; 51. End cover; 6. Impeller mounting block; 61. Impeller slot; 7. Impeller body; 71. Connecting plate; 72. Scraper slot; 73. Limit cover; 74. Receiving cavity; 8. Scraper body; 81. Bolt; 9. Locking block; 91. Spring. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] like Figures 1 to 8 As shown, a positive pressure star-shaped ash discharge valve includes a motor 1, a coupling 2, a valve body 5, a protective shell 3, and a main shaft 4. The output end of the motor 1 is connected to the coupling 2, serving as the power source for the entire ash discharge valve, providing the necessary rotational power to drive the main shaft 4 and impeller to rotate, thereby conveying materials. The output end of the coupling 2 is connected to the main shaft 4, serving to transmit torque and compensate for installation errors between the two shafts. It transmits the power generated by the motor 1 to the main shaft 4, enabling the main shaft 4 to rotate. The main shaft 4 passes through the valve body 5. The protective shell 3 is fixed between the valve body 5 and the coupling 2, protecting the coupling 2 and preventing material from entering. Material and external impurities can damage coupling 2. The valve body 5 has an inlet at the top to receive material from upstream equipment and an outlet at the bottom. Material is discharged from the outlet and enters the subsequent conveying pipeline. The valve body 5 is the main channel for material conveying and unloading. End caps 51 are provided on both sides of the valve body 5. The end caps 51 are fixedly connected to the valve body 5 by bolts 81, which facilitates the installation, disassembly and maintenance of the equipment. Multiple impeller mounting blocks 6 are provided on the outer peripheral wall of the main shaft 4. The impeller mounting blocks 6 are arranged around the circumference of the main shaft 4. This arrangement can ensure that the impeller is subjected to uniform force during rotation. Impeller mounting blocks 6 are provided with impeller slots 61.

[0028] The impeller slot 61 is fitted with an impeller body 7, which is generally made of a material with certain strength and wear resistance, such as high-chromium cast iron or wear-resistant alloy steel. Its shape is usually a star-shaped structure composed of multiple blades. The number and angle of the blades are designed according to the characteristics of the material and the conveying requirements. When the main shaft 4 rotates, the blades of the impeller body 7 divide the material into relatively independent spaces. As the impeller rotates, the material is gradually pushed forward to achieve continuous conveying. The lower end of the impeller body 7 is provided with a connecting plate 71, which is integrated with the impeller body 7. The integrated design increases the structural strength of the impeller body 7. The impeller body 7 and the impeller mounting block 6 are clamped together by a clamping device. The clamping device ensures that the impeller body 7 is firmly installed on the main shaft 4 and can withstand the impact of materials and airflow under positive pressure.

[0029] Two clamping devices are provided, symmetrically arranged on both sides of the connecting plate 71. Each clamping device includes a receiving cavity 74, and a limiting cover 73 is provided on the top of the receiving cavity 74. The limiting cover 73 is fixedly connected to the receiving cavity 74. A spring 91 is provided inside the receiving cavity 74. One end of the spring 91 is fixed to the bottom of the receiving cavity 74, and the other end of the spring 91 is provided with a locking block 9. The locking block 9 extends out of the receiving cavity 74 through the limiting cover 73. When installing the impeller body 7, the locking block 9 is compressed into the receiving cavity 74, so that the impeller body 7 is placed in the impeller slot 61. When the locking block 9 reaches the through hole position, it pops out under the action of the spring 91 and locks into the through hole, thereby realizing the clamping connection between the impeller body 7 and the impeller mounting block 6.

[0030] The impeller mounting block 6 is provided with a through hole that matches the locking block 9.

[0031] The top of the impeller body 7 is provided with a scraper groove 72, and a scraper body 8 is installed in the scraper groove 72. The scraper body 8 is fixedly connected to the impeller body 7 by bolts 81. During the rotation of the impeller body 7, the scraper body 8 can scrape off the material adhering to the inner wall of the valve body 5, preventing material accumulation and ensuring smooth unloading. The scraper body 8 is generally made of a material with certain hardness and wear resistance, such as rubber or polyurethane. Its shape is usually long and narrow, adapted to the shape of the inner wall of the valve body 5. When the impeller body 7 rotates, the scraper body 8 rotates with the impeller body 7, and its edge contacts the inner wall of the valve body 5, scraping off the material adhering to the wall surface, so that the material can be smoothly conveyed by the impeller body 7. By regularly inspecting and replacing the scraper body 8, its scraping effect can be guaranteed.

[0032] The main shaft 4 is fitted with two bearing seats, which are respectively located on the outside of the two end caps 51. The bearing seats support the main shaft 4, ensuring that the main shaft 4 can rotate smoothly and reducing the wear and vibration of the main shaft 4.

[0033] The working principle of this utility model is as follows: When the motor 1 is started, it drives the main shaft 4 to rotate through the coupling 2. The impeller body 7 on the main shaft 4 rotates accordingly. The material enters the valve body 5 from the feed port above the valve body 5. Under the push of the impeller body 7, the material is divided into relatively independent spaces and is transported to the discharge port at the bottom of the valve body 5 as the impeller body 7 rotates. The material is discharged from the valve body 5 and enters the subsequent conveying pipeline. During the rotation of the impeller body 7, the scraper body 8 continuously scrapes off the material adhering to the inner wall of the valve body 5 to prevent material accumulation and ensure smooth unloading.

[0034] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A positive pressure star-shaped ash discharge valve, comprising a motor (1), a coupling (2), a valve body (5), a protective shell (3), and a main shaft (4), wherein the output end of the motor (1) is connected to the coupling (2), the output end of the coupling (2) is connected to the main shaft (4), the main shaft (4) passes through the valve body (5), the protective shell (3) is fixed between the valve body (5) and the coupling (2), the valve body (5) has an inlet at the top and an outlet at the bottom, and end caps (51) are provided on both side walls of the valve body (5), the end caps (51) being fixedly connected to the valve body (5) by bolts (81), characterized in that, The outer peripheral wall of the main shaft (4) is provided with a plurality of impeller mounting blocks (6), the impeller mounting blocks (6) are arranged along the circumference of the axis of the main shaft (4), and the impeller mounting blocks (6) are provided with impeller slots (61); The impeller slot (61) is equipped with an impeller body (7). The lower end of the impeller body (7) is provided with a connecting plate (71). The connecting plate (71) is integrated with the impeller body (7). The impeller body (7) and the impeller mounting block (6) are connected by a clamping device.

2. The positive pressure star-shaped ash discharge valve according to claim 1, characterized in that: Two clamping devices are provided, symmetrically arranged on both sides of the connecting plate (71). Each clamping device includes a receiving cavity (74). A limiting cover (73) is provided on the top of the receiving cavity (74). The limiting cover (73) is fixedly connected to the receiving cavity (74). A spring (91) is provided inside the receiving cavity (74). One end of the spring (91) is fixed to the bottom of the receiving cavity (74). The other end of the spring (91) is provided with a locking block (9). The locking block (9) extends out of the receiving cavity (74) through the limiting cover (73). The impeller mounting block (6) is provided with a through hole that matches the locking block (9).

3. A positive pressure star-shaped ash discharge valve according to claim 2, characterized in that: The top of the impeller body (7) is provided with a scraper groove (72), and a scraper body (8) is installed in the scraper groove (72). The scraper body (8) is fixedly connected to the impeller body (7) by bolts (81).

4. A positive pressure star-shaped ash discharge valve according to claim 1, characterized in that: The main shaft (4) is fitted with a bearing seat, and there are two bearing seats, which are respectively located on the outside of the two end caps (51).

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