Adjustable quicksand hopper for shot blasting machine

Abstract

The adjustable quicksand hopper comprises a sand inlet hopper, an opening is formed in the top of the sand inlet hopper, a first speed reduction baffle and a second speed reduction baffle which are distributed in a staggered mode are fixed to the inner wall of the sand inlet hopper, meanwhile, two sets of gate tracks which are symmetrically distributed are fixed to the outer wall of the front end of the sand inlet hopper, a sand outlet hopper is arranged on the outer sides of the gate tracks, and the sand outlet hopper is connected with the opening. The sand outlet hopper is fixed to the sand inlet hopper, a channel sand inlet is formed in the joint of the sand outlet hopper and the sand inlet hopper, an adjusting gate plate is slidably connected to the gate plate rail, a lifting push rod is fixed to the outer wall of the sand inlet hopper, the output end of the lifting push rod is fixedly connected with the upper end of the adjusting gate plate, and a sand sliding bottom plate is arranged at the lower end of the inner wall of the sand inlet hopper. The bottom of the sand sliding bottom plate and the bottom of the sand discharging hopper are arranged on the same plane, and the bottom of the outer side of the sand discharging hopper is connected with a sand outlet through an installation fixing disc. The utility model belongs to the technical field of quicksand hoppers, and particularly relates to an adjustable quicksand hopper for a shot blasting machine.

Description

Technical Field

[0001] This utility model belongs to the field of quicksand bucket technology, specifically referring to an adjustable quicksand bucket for shot blasting machines. Background Technology

[0002] Shot blasting (cleaning) machines are used to remove rust, oxide layers, dirt, and welding slag from metal surfaces, making them clean and shiny. They can also increase the surface roughness of workpieces, which is beneficial for the adhesion of subsequent spray coatings. In addition, they can eliminate internal stress in workpieces and extend their service life. Their applications are very wide. The most important factor affecting their quality is the shot blasting volume. The greater the shot blasting volume per unit time, the better the cleaning effect.

[0003] There are two existing methods for controlling the amount of shot in shot blasting machines. One is a manual adjustment gate valve. In this process, it is difficult to control the amount of shot added. If too much shot is added, it will cause the shot blasting motor to overload, damage the control circuit, or even burn out the motor. The other is a pneumatic adjustment gate valve. This method is not much different from the previous one. It has all the advantages and disadvantages, but it is more automated. The only difference is that the operation is changed from hitting the gate with a hammer to operating the button.

[0004] Whether it's a manual or pneumatic gate valve, the displayed operating current is not the actual workload. This is because the impact force of the steel shot (steel sand) from top to bottom obstructs the flow. After the steel shot (steel sand) flows into the flow pipe, it begins to accelerate under the action of gravity. Although the mass of the steel shot does not increase, its kinetic energy increases due to the increased drop. The actual amount of shot blasted must be reduced by the kinetic energy generated by the impact force to obtain the actual workload. After the steel shot (steel sand) enters the feed pipe, it generates a corresponding impact force due to gravity. This impact force is converted into kinetic energy and reacts on the shot wheel in the center of the shot blaster, hindering the operation of the shot blaster motor and preventing it from reaching its maximum working efficiency.

[0005] Based on the above problems, this application proposes an adjustable sand hopper for shot blasting machines, which can completely eliminate impact reaction force. In conjunction with an existing controller, the sand flow rate is automatically adjusted after advanced PID calculation, keeping the maximum allowable current (actual workload) of the shot blasting motor at all times, thereby improving work efficiency by 1 to 3 times. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, this utility model provides an adjustable quicksand bucket for shot blasting machines, which effectively eliminates the impact force of steel shot (steel sand) and extends the service life of vulnerable parts such as guide pipe, quicksand bucket, and shot wheel.

[0007] The technical solution adopted by this utility model is as follows: This utility model proposes an adjustable sand hopper for a shot blasting machine, including a sand inlet hopper. The top of the sand inlet hopper is provided with an opening, and the inner wall is fixed with staggered deceleration baffles one and two. At the same time, two sets of symmetrically distributed gate rails are fixed on the outer wall of the front end of the sand inlet hopper. A sand outlet hopper is provided on the outer side of the gate rails and is fixed on the sand inlet hopper. A channel sand inlet is provided at the connection between the sand outlet hopper and the sand inlet hopper. An adjusting gate is slidably connected on the gate rails and is located on the outer side of the channel sand inlet. A lifting push rod is fixed on the outer wall of the sand inlet hopper, and the output end of the lifting push rod is fixedly connected to the upper end of the adjusting gate.

[0008] As an improvement to this solution, the lower end of the inner wall of the sand inlet hopper is provided with a sand sliding bottom plate, and the sand sliding bottom plate is set on the same plane as the bottom of the sand outlet hopper. The bottom of the outer side of the sand outlet hopper is connected to the sand outlet through a fixed disc.

[0009] As an improvement to this solution, the upper end of the sand inlet hopper is fixedly connected to an end cover by bolts, and a guide pipe is inserted and pulled into the middle of the top of the end cover. The guide pipe and the end cover are fixed by welding.

[0010] As an improvement to this solution, both the first and second deceleration baffles are L-shaped thin plates with grooves on the top, and the height of the grooves is 10mm.

[0011] As an improvement to this solution, the angle between the bottom of the sand inlet hopper and the bottom of the sand outlet hopper and the horizontal plane is greater than 45°.

[0012] As an improvement to this solution, the lifting push rod can be either an electric push rod or a cylinder.

[0013] The beneficial effects of this utility model by adopting the above structure are as follows:

[0014] 1. The traditional sand hopper and shot supply gate valve are combined into one, and additional mechanisms are added on this basis, resulting in a more sophisticated design and lower cost. It can be used with cylinder and solenoid valve systems to achieve quantitative sand supply; it can also be used with electric push rods and controllers to achieve PID automatic control, adjusting the sand quantity in real time to keep it at the maximum shot blasting quantity allowed by the motor load at all times.

[0015] 2. The sand is decelerated from top to bottom by staggered, separate 90° sand receiving baffles, then turns and slides into the regulating gate channel. Finally, it flows through the sand hopper at a 45° angle and enters the shot blaster, completely eliminating the impact force of steel shot (steel sand). The service life of vulnerable parts such as the guide pipe, sand hopper, and shot wheel is extended by 1 / 3, and the workload is stable. This can save the start-up time of the shot blasting machine and reduce the operating cost. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation of the overall structure of the adjustable quicksand bucket for a shot blasting machine proposed in this utility model;

[0017] Figure 2 This is a cross-sectional view of an adjustable quicksand bucket for a shot blasting machine proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of an adjustable quicksand bucket for a shot blasting machine proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the overall structure of an adjustable quicksand bucket for a shot blasting machine proposed in this utility model.

[0020] The components include: 1. Lifting push rod; 2. Gate rail; 3. Deceleration baffle one; 4. Adjusting gate; 5. Sand inlet; 6. Sand hopper; 7. Deceleration baffle two; 8. Sliding sand base plate; 9. Sand outlet; 10. Mounting and fixing disc; 11. Sand outlet; 12. Groove; 13. Guide pipe; and 14. End cap.

[0021] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the present invention proposes an adjustable sand hopper for a shot blasting machine, comprising a sand inlet hopper 6, an opening at the top of the sand inlet hopper 6, and alternating deceleration baffles 3 and 7 fixed on the inner wall. Simultaneously, two sets of symmetrically distributed gate rails 2 are fixed on the outer wall of the front end of the sand inlet hopper 6. A sand outlet hopper 9 is provided on the outer side of the gate rails 2 and is fixed to the sand inlet hopper 6. A channel sand inlet 5 is provided at the connection between the sand outlet hopper 9 and the sand inlet hopper 6. An adjusting gate 4 is slidably connected to the gate rails 2 and is located on the outer side of the channel sand inlet 5. A lifting push rod 1 is fixed on the outer wall of the sand inlet hopper 6, and the output end of the lifting push rod 1 is fixedly connected to the upper end of the adjusting gate 4. The lifting push rod 1 can be either an electric push rod or a cylinder.

[0024] like Figure 2 and Figure 4 As shown, a sand-sliding bottom plate 8 is provided at the lower end of the inner wall of the sand inlet 6, and the sand-sliding bottom plate 8 and the bottom of the sand outlet 9 are set on the same plane. The bottom of the outer side of the sand outlet 9 is connected to the sand outlet 11 by a fixed mounting disc 10. The angle between the sand-sliding bottom plate 8 at the bottom of the sand inlet 6 and the bottom of the sand outlet 9 and the horizontal plane is greater than 45°.

[0025] like Figure 4 As shown, the upper end of the sand inlet 6 is fixedly connected to the end cover 14 by bolts, and the middle of the top of the end cover 14 is connected to the guide pipe 13. The guide pipe 13 and the end cover 14 are fixed by welding.

[0026] like Figure 2 As shown, both the first deceleration baffle 3 and the second deceleration baffle 7 are L-shaped thin plates and have a groove 12 on the top, with a height of 10mm.

[0027] In practical use, the sand outlet 11 of the sand hopper is fixed to the shot blasting machine with bolts using the mounting and fixing disc 10. The steel shot flows out from the yarn bin of the external separator, enters the guide pipe 13, and then enters the sand inlet hopper 6 through the end cover 14. The impact kinetic energy of the steel shot is reduced by the staggered and relatively high deceleration baffles 1 3 and 2 7. After the groove 12 is filled with steel shot, the steel shot continues to slide to one side without blocking the flow of steel shot. After being decelerated and buffered, the steel shot naturally slides into the sand outlet hopper 9 through the bottom inclined sand sliding plate 8, and then is discharged through the sand inlet 5 and the sand outlet 11. During this process, the height of the adjusting gate 4 can be adjusted by the lifting push rod 1, so that it rises and falls along the gate track 2 to open the sand inlet 5. The size of the opening is adjusted to control the amount of sand. In addition, when a large amount of sand enters the guide pipe 13, since the sand inlet 5 of the channel only allows a portion of the sand to pass through, the excess steel shot is trapped at one end of the inlet. As the machine runs, it will accumulate more and more, and the guide pipe 13 will be temporarily filled with steel shot. In this way, the guide pipe 13 will no longer be damaged by friction from impact. At the same time, the steel shot enters the sand outlet 9 through the sand inlet 5 of the channel, and flows naturally through the sand outlet 11 along the 45-degree inclined sand sliding plate 8, and enters the shot blaster. At this time, the workload is purely the kinetic energy of the sand flow rate, without any other obstruction. The working efficiency is increased by at least 1 times compared to the lifting push rod. The above is the entire process of using the adjustable sand hopper of the shot blasting machine.

[0028] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An adjustable sand hopper for a shot blasting machine, comprising a sand inlet hopper (6), characterized in that: The top of the sand inlet hopper (6) is provided with an opening and the inner wall is fixed with staggered deceleration baffles 1 (3) and deceleration baffles 2 (7). At the same time, two sets of symmetrical gate rails (2) are fixed on the outer wall of the front end of the sand inlet hopper (6). The outer side of the gate rails (2) is provided with a sand outlet hopper (9), and the sand outlet hopper (9) is fixed on the sand inlet hopper (6). The connection between the sand outlet hopper (9) and the sand inlet hopper (6) is provided with a channel sand inlet (5). An adjusting gate (4) is slidably connected on the gate rails (2), and the adjusting gate (4) is located on the outer side of the channel sand inlet (5). A lifting push rod (1) is fixed on the outer wall of the sand inlet hopper (6), and the output end of the lifting push rod (1) is fixedly connected to the upper end of the adjusting gate (4).

2. The adjustable flow sand bucket for a shot blasting machine according to claim 1, characterized in that: The lower end of the inner wall of the sand inlet hopper (6) is provided with a sand sliding bottom plate (8), and the sand sliding bottom plate (8) and the bottom of the sand outlet hopper (9) are set on the same plane. The bottom of the outer side of the sand outlet hopper (9) is connected to the sand outlet (11) by a fixed disc (10).

3. The adjustable flow sand bucket for a shot blasting machine according to claim 2, characterized in that: The upper end of the sand inlet hopper (6) is fixedly connected to an end cap (14) by bolts, and a guide pipe (13) is inserted and pulled into the middle of the top of the end cap (14). The guide pipe (13) and the end cap (14) are fixed by welding.

4. The adjustable flow sand bucket for a shot blasting machine according to claim 3, characterized in that: Both the first deceleration baffle (3) and the second deceleration baffle (7) are L-shaped thin plates and have a groove (12) on the top, with the groove (12) having a height of 10mm.

5. An adjustable flow sand bucket for a shot blasting machine according to claim 4, characterized in that: The angle between the bottom of the sand inlet hopper (6) and the bottom of the sand outlet hopper (9) and the horizontal plane is greater than 45°.

6. The adjustable flow sand bucket for a shot blasting machine according to claim 5, characterized in that: The lifting push rod (1) is either an electric push rod or a cylinder.

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