A metering device for asphalt feeding speed

Abstract

This utility model belongs to the field of asphalt metering technology, specifically disclosing an asphalt feeding speed metering device, including a support platform, a feeding hopper fixedly connected to the top of the support platform, a cover fixedly connected to the top of the feeding hopper, a feeding port on the cover, an mounting plate fixedly connected to the support platform, and a metering pump fixedly installed on the top of the mounting plate. The spiral plate design enables it to drive the asphalt flow in the feeding hopper, increasing the flow rate. When the asphalt passes through the channel of the spiral plate, due to the twisted shape of the spiral plate, the asphalt will continuously change direction during the flow process, making the asphalt flow speed distribution more uniform, reducing flow resistance, and thus increasing the flow rate. With the above design, the flow speed of asphalt in the feeding hopper can be significantly improved. Thus, during the process of the metering pump extracting asphalt from the feeding hopper, the asphalt in the upper layer will be replenished to the bottom, completing the improvement of the asphalt feeding speed.

Description

Technical Field

[0001] This utility model belongs to the field of asphalt metering technology, and specifically relates to an asphalt feeding speed metering device. Background Technology

[0002] Currently, there are two main types of asphalt metering devices used in asphalt mixing equipment: one uses weight sensors (commonly known as piezoelectric sensors) and computer technology, and the other uses weight displacement sensing and computer technology.

[0003] For example, Chinese Patent Publication No. CN218156438U discloses an asphalt metering device, including: an asphalt metering hopper, an asphalt spraying pump, an asphalt unloading transition hopper, and an asphalt extraction pipe. The outlet of the asphalt metering hopper is located above the inlet of the asphalt unloading transition hopper. The height of the asphalt metering hopper, the asphalt unloading transition hopper, and the asphalt spraying pump are set from top to bottom. The height difference can be used to accelerate the flow rate of asphalt, thereby improving the metering speed and feeding speed of asphalt. At the same time, the asphalt extraction pipe is lower than the asphalt unloading transition hopper, so that under the influence of gravity, almost all the asphalt is metered by the asphalt spraying pump, which improves the accuracy of metering.

[0004] However, in actual use, it was found that the asphalt was quite viscous and its natural flow rate in the hopper was limited. Therefore, when the pump continuously extracted asphalt from the hopper, the asphalt in the upper layer could not flow to the bottom in time to replenish the missing asphalt at the bottom, resulting in limited pumping efficiency. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an asphalt feeding speed metering device.

[0006] To achieve the above objectives, this utility model provides an asphalt feeding speed metering device, including a support platform, a feeding hopper fixedly connected to the top of the support platform, a cover fixedly connected to the top of the feeding hopper, a feeding port on the cover, an mounting plate fixedly connected to the support platform, a metering pump fixedly mounted on the top of the mounting plate, an output pipe fixedly connected to the output end of the metering pump, a feeding pipe fixedly connected to the input end of the metering pump, and the feeding pipe is connected to the feeding hopper, and a pressurization component is provided inside the feeding hopper;

[0007] The pressurizing component is used to increase the flow rate of asphalt within the feeding hopper.

[0008] In the above technical solution, the pressurizing component further includes a motor fixedly installed on the cover, a transmission rod fixedly connected to the output end of the motor, and the transmission rod is inserted into and rotatably installed on the inner wall of the cover, and a spiral plate is fixedly connected to the outer wall of the transmission rod.

[0009] In the above technical solution, the feeding hopper further includes a feeding cylinder, a pressure cylinder and a concentrating cylinder connected from top to bottom. The pressure cylinder is configured with a conical structure. The outer shape of the concentrating cylinder corresponds to the bottom of the pressure cylinder. A third scraper is fixedly connected to the bottom end of the transmission rod, and the third scraper rotates inside the concentrating cylinder.

[0010] In the above technical solution, the bottom of the cover is symmetrically fixedly connected with a fixing rod, and the bottom of the fixing rod is fixedly connected with a guide plate, and the guide plate is provided with a flow port.

[0011] In the above technical solution, a connecting plate is further fixedly connected to the outer wall of the transmission rod, a first scraper is symmetrically fixedly connected to the top of the connecting plate, and a second scraper is symmetrically fixedly connected to the bottom of the connecting plate.

[0012] In the above technical solution, a baffle is further fixedly connected to the outer wall of the cover.

[0013] In the above technical solution, furthermore, the bottom of the feeding hopper is symmetrically fixed with a support frame, and the support frame is fixedly connected to the support platform.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] After the motor is started, the transmission rod is fixed, which drives the spiral plate to rotate inside the feeding hopper. The design of the spiral plate allows it to drive the asphalt flow in the feeding hopper, increasing the flow rate. When the asphalt passes through the channel of the spiral plate, due to the twisted shape of the spiral plate, the asphalt will continuously change direction during the flow process, making the asphalt flow velocity distribution more uniform, reducing flow resistance, and thus increasing the flow rate. With the above design, the flow velocity of asphalt in the feeding hopper can be significantly improved. In this way, during the process of the metering pump extracting asphalt from the feeding hopper, the asphalt in the upper layer will be replenished to the bottom, thus improving the asphalt discharge speed.

[0016] The pressure cylinder is designed as a conical funnel shape, wider at the top and narrower at the bottom. When the asphalt in the feeding cylinder is full, it can exert pressure on the asphalt in the pressure cylinder, thereby naturally increasing the flow rate. At the same time, the narrowing design at the top and bottom also makes the flow channel of the asphalt gradually narrow. This design ensures that the amount of asphalt in the pressure cylinder is sufficient to replenish the amount of asphalt missing in the collection cylinder. In addition, the asphalt in the pressure cylinder can be quickly flowed into the collection cylinder by the spiral plate to complete the asphalt replenishment and further improve the flow rate of the asphalt. Attached Figure Description

[0017] Figure 1 This is a second-view structural schematic diagram of an asphalt feeding speed metering device proposed in this utility model;

[0018] Figure 2 This is a first-view structural schematic diagram of an asphalt feeding speed metering device proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the feeding hopper of an asphalt feeding speed metering device proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the spiral plate structure of an asphalt feeding speed metering device proposed in this utility model.

[0021] In the diagram: 1. Support platform; 2. Mounting plate; 3. Output pipe; 4. Metering pump; 5. Feed pipe; 6. Feed hopper; 7. Motor; 8. Cover; 9. Baffle; 10. Feed port; 11. Support frame; 12. Concentrating cylinder; 13. Pressurizing cylinder; 14. Feeding cylinder; 15. Transmission rod; 16. Fixing rod; 17. Guide plate; 18. Flow port; 19. Connecting plate; 20. First scraper; 21. Spiral plate; 22. Second scraper; 23. Third scraper. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1-4The asphalt feeding speed metering device shown includes a support platform 1, a feeding hopper 6 fixedly connected to the top of the support platform 1, a cover 8 fixedly connected to the top of the feeding hopper 6, a feeding port 10 on the cover 8, an mounting plate 2 fixedly connected to the support platform 1, a metering pump 4 fixedly mounted on the top of the mounting plate 2, an output pipe 3 fixedly connected to the output end of the metering pump 4, and a feeding pipe 5 fixedly connected to the input end of the metering pump 4, and the feeding pipe 5 is connected to the feeding hopper 6. A pressurizing component is provided inside the feeding hopper 6 to increase the flow speed of asphalt in the feeding hopper 6. The pressurizing component includes a motor 7 fixedly mounted on the cover 8, a transmission rod 15 fixedly connected to the output end of the motor 7, and the transmission rod 15 is inserted into and rotatably mounted on the inner wall of the cover 8. Above, a spiral plate 21 is fixedly connected to the outer wall of the transmission rod 15. After the motor 7 is started, the spiral plate 21 is driven to rotate inside the feeding hopper 6 through the fixed transmission rod 15. The design of the spiral plate 21 enables it to drive the asphalt flow in the feeding hopper 6, thereby increasing the flow rate. When the asphalt passes through the channel of the spiral plate 21, due to the twisted shape of the spiral plate 21, the asphalt will continuously change direction during the flow process, making the asphalt flow speed distribution more uniform, reducing flow resistance, and thus increasing the flow rate. With the above design, the flow speed of asphalt in the feeding hopper 6 can be significantly improved. In this way, during the process of the metering pump 4 extracting asphalt from the feeding hopper 6, the asphalt in the upper layer will be replenished to the bottom, thus improving the asphalt discharge speed.

[0024] The feeding hopper 6 includes a feeding cylinder 14, a pressure cylinder 13, and a concentrator 12 connected from top to bottom. The pressure cylinder 13 is designed with a conical structure, and the shape of the concentrator 12 corresponds to the bottom of the pressure cylinder 13. The bottom end of the transmission rod 15 is fixedly connected to a third scraper 23, which rotates inside the concentrator 12. The pressure cylinder 13 is designed with a conical funnel shape that is wider at the top and narrower at the bottom. When the asphalt in the feeding cylinder 14 is full, it can compress the asphalt in the pressure cylinder 13, thereby naturally increasing the flow rate. At the same time, the design of the narrow opening at the top and narrow at the bottom also makes the flow channel of the asphalt gradually narrow. This design ensures that the amount of asphalt in the pressure cylinder 13 is sufficient to replenish the amount of asphalt missing in the concentrator 12. At the same time, the asphalt in the pressure cylinder 13 can be driven by the spiral plate 21 to quickly flow into the concentrator 12 to replenish the asphalt and further improve the flow rate of the asphalt.

[0025] The bottom of the cover 8 is symmetrically fixed with a fixing rod 16, and the bottom of the fixing rod 16 is fixedly connected with a guide plate 17. The guide plate 17 has a flow port 18, and the asphalt can be guided to flow into the inside of the feeding hopper 6 by setting the guide plate 17.

[0026] A connecting plate 19 is fixedly connected to the outer wall of the transmission rod 15. A first scraper 20 is symmetrically fixedly connected to the top of the connecting plate 19, and a second scraper 22 is symmetrically fixedly connected to the bottom of the connecting plate 19. By setting the first scraper 20 and the second scraper 22, the inner walls of the feeding cylinder 14 and the pressurizing cylinder 13 can be cleaned respectively.

[0027] A baffle 9 is fixedly connected to the outer wall of the cover 8, which provides protection for the motor 7.

[0028] The bottom of the feeding hopper 6 is symmetrically fixed with support frames 11, and the support frames 11 are fixedly connected to the support platform 1. This design can improve the support effect of the feeding hopper 6.

[0029] Working principle:

[0030] After the motor 7 is started, the transmission rod 15 fixes the spiral plate 21, which in turn drives the spiral plate 21 to rotate inside the feeding hopper 6. The design of the spiral plate 21 enables it to drive the asphalt flow in the feeding hopper 6, thereby increasing the flow rate. When the asphalt passes through the channel of the spiral plate 21, due to the twisted shape of the spiral plate 21, the asphalt will continuously change direction during the flow process, making the asphalt flow speed distribution more uniform, reducing flow resistance, and thus increasing the flow rate. With the above design, the flow speed of asphalt in the feeding hopper 6 can be significantly improved. In this way, during the process of the metering pump 4 drawing asphalt from the feeding hopper 6, the asphalt in the upper layer will be replenished to the bottom, thus improving the asphalt discharge speed.

[0031] The pressure cylinder 13 is designed as a conical funnel shape that is wider at the top and narrower at the bottom. When the asphalt in the feeding cylinder 14 is full, it can compress the asphalt in the pressure cylinder 13, thereby naturally increasing the flow rate. At the same time, the narrowing design at the top and bottom also makes the flow channel of the asphalt gradually narrow. This design ensures that the amount of asphalt in the pressure cylinder 13 is sufficient to replenish the amount of asphalt missing in the collection cylinder 12. Meanwhile, the asphalt in the pressure cylinder 13 can be driven by the spiral plate 21 to quickly flow into the collection cylinder 12 to complete the asphalt replenishment and further improve the flow rate of the asphalt.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An asphalt feeding speed metering device, comprising a support platform (1), a feeding hopper (6) fixedly connected to the top of the support platform (1), a cover (8) fixedly connected to the top of the feeding hopper (6), a feeding port (10) opened on the cover (8), an mounting plate (2) fixedly connected to the support platform (1), a metering pump (4) fixedly mounted on the top of the mounting plate (2), an output pipe (3) fixedly connected to the output end of the metering pump (4), a feeding pipe (5) fixedly connected to the input end of the metering pump (4), and the feeding pipe (5) being connected to the feeding hopper (6), characterized in that, The feeding hopper (6) is equipped with a pressurizing component; The pressurizing component is used to increase the flow rate of asphalt in the feeding hopper (6).

2. The asphalt feeding speed metering device according to claim 1, characterized in that, The pressurizing assembly includes a motor (7) fixedly installed on the cover (8), a transmission rod (15) fixedly connected to the output end of the motor (7), and the transmission rod (15) is inserted into and rotatably installed on the inner wall of the cover (8), and a spiral plate (21) is fixedly connected to the outer wall of the transmission rod (15).

3. The asphalt feeding speed metering device according to claim 2, characterized in that, The feeding hopper (6) includes a feeding cylinder (14), a pressure cylinder (13) and a concentrator (12) connected from top to bottom. The pressure cylinder (13) is configured as a cone shape. The shape of the concentrator (12) corresponds to the bottom of the pressure cylinder (13). The bottom end of the transmission rod (15) is fixedly connected to a third scraper (23), and the third scraper (23) rotates inside the concentrator (12).

4. The asphalt feeding speed metering device according to claim 1, characterized in that, The bottom of the cover (8) is symmetrically fixedly connected with a fixing rod (16), and the bottom of the fixing rod (16) is fixedly connected with a guide plate (17), and the guide plate (17) is provided with a flow port (18).

5. The asphalt feeding speed metering device according to claim 2, characterized in that, A connecting plate (19) is fixedly connected to the outer wall of the transmission rod (15). A first scraper (20) is symmetrically fixedly connected to the top of the connecting plate (19), and a second scraper (22) is symmetrically fixedly connected to the bottom of the connecting plate (19).

6. The asphalt feeding speed metering device according to claim 1, characterized in that, A baffle (9) is fixedly connected to the outer wall of the cover (8).

7. The asphalt feeding speed metering device according to claim 1, characterized in that, The bottom of the feeding hopper (6) is symmetrically fixed with a support frame (11), and the support frame (11) is fixedly connected to the support platform (1).

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