Multi-stage buffering cement discharging device

Abstract

The utility model relates to the technical field of downward conveying of dry powder materials, and particularly discloses a multistage buffering cement discharging device which comprises a first elephant trunk, one end of the first elephant trunk is communicated with a storage tank, the other end of the first elephant trunk is communicated with a temporary storage bin, the first elephant trunk is a bent pipe or a bent pipe, a first valve is installed on the first elephant trunk, and an impeller feeder is installed in the first elephant trunk. The first valve is located at the upstream of the impeller feeder; and a level gage is arranged in the temporary storage bin. The scheme is used for solving the problem that the temporary storage bin is easily full and overflows due to the fact that the speed of conveying existing dry powder cement to the temporary storage bin from a high-position material storage tank is too high.

Description

Technical Field

[0001] The utility model relates to the technical field of downward conveying of dry powder materials, in particular to a multi-stage buffering cement discharging device. Background Art

[0002] In the process of transporting dry powder materials from high places to low places, factories often send the dry powder materials to high storage tanks for storage in order to realize the automation of dry powder material discharge. Then, when the materials are used, the discharge pipe connected to the storage tank is opened to let the raw materials fall.

[0003] However, because the storage tank is located at a high place and the discharge path is located at a low place, after the discharge pipe is opened, the dry powdered material will be quickly transported downward under the pressure of the material above, which is very unfavorable for the precise control of the use of raw materials.

[0004] In the prior art, in order to slow down the feeding speed, a bent pipe is often provided relative to the discharge port of the storage tank to cushion the falling material (for example, a first chute structure for solid material discharge with patent announcement number CN205989979U). However, for storage tanks with higher heights and dry powdered raw materials that are extremely easy to fall, the cushioning effect brought by a single bent pipe is limited. In order to avoid the problem of low downstream material control accuracy caused by the excessively fast discharge speed of dry powdered raw materials, the prior art for conveying dry powdered materials such as dry powdered cement often connects an intermediate temporary storage bin to the output end of the first chute, and then installs a screw feeder at the output end of the intermediate temporary storage bin, and finally allows the screw feeder to spirally deliver the raw materials to ensure the accuracy of the raw materials being delivered downstream.

[0005] However, for powder materials with a fast falling speed such as dry powder cement, simply setting up the first chute and the intermediate temporary storage bin will also cause the intermediate temporary storage bin to be filled up easily and overflow due to the excessive feeding speed of the material into the intermediate temporary storage bin and the relatively slow discharge of the material by the screw feeder. Utility Model Content

[0006] The utility model is intended to provide a multi-stage buffer cement discharging device to solve the problem that the existing dry powder cement is easily filled and overflowed when it is sent from a high-altitude storage tank to a temporary storage bin at a too fast speed.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A multi-stage buffered cement discharging device includes a first chute connected to a storage tank at one end and a temporary storage bin at the other end. The first chute is a curved or bent pipe. A first valve is installed on the first chute. An impeller feeder is installed in the first chute. The first valve is located upstream of the impeller feeder.

[0009] The principle and advantage of this solution are: when adopting this solution, when it is necessary to feed materials to the temporary storage bin, the first valve is opened, and the powdered cement is fed along the first chute through the impeller feeder and then fed to the temporary storage bin.

[0010] Because the first chute is a bent or curved pipe, the structure of the first chute forms a buffer for the falling cement powder, and the buffering process reduces the falling speed of the dry powdered cement; the setting of the impeller feeder requires the impeller in the first chute to rotate, and the powdered cement can be continuously sent to the temporary storage bin under the rotation of the impeller. Therefore, the impeller feeder greatly hinders the discharge speed of the powdered cement, greatly buffering and reducing the discharge speed of the cement; and the existence of the temporary storage bin temporarily stores the powdered cement again, which is equivalent to another buffer. The entire solution greatly reduces the speed of cement sent to the temporary storage bin by setting a curved or bent first chute on the discharging device and an impeller feeder in the first chute, avoiding the problem of dry powdered cement being sent from a high storage tank to the temporary storage bin too quickly, which easily causes the temporary storage bin to be full and overflow.

[0011] In addition, the presence of an impeller feeder also contributes to accurate feeding. The main reason is that the closing of the first valve requires response time, and the falling speed of the powdered cement along the first chute is too fast. Without an impeller feeder, it is difficult to accurately control the material fed into the temporary storage bin.

[0012] Preferably, as an improvement, a material level meter is provided in the temporary storage bin to facilitate real-time monitoring of the cement height in the temporary storage bin.

[0013] Preferably, as an improvement, a controller is further included, which is used to control the first valve to close and the impeller feeder to stop after the level meter detects that the material level exceeds the preset range, so as to automatically close the first valve and the impeller feeder when there is too much material in the temporary storage bin.

[0014] Preferably, as an improvement, it further includes a second chute, a vibrating screen is connected between the second chute and the temporary storage bin, the input end of the second chute is connected to the storage tank, a second valve is provided on the second chute, and the second valve is located upstream of the vibrating screen.

[0015] Beneficial effect: The second chute ensures that the speed of the dry powder cement sent to the vibrating screen is not too fast, and the setting of the vibrating screen allows the dry powder cement to be screened through the vibrating screen after agglomeration, ensuring the quality reliability of the cement powder sent to the temporary storage bin.

[0016] Preferably, as an improvement, a third valve is provided between the vibrating screen and the temporary storage bin.

[0017] Preferably, as an improvement, the first chute and the second chute share a feed pipe, and a switching valve is installed at the discharge end of the feed pipe, and the switching valve is used to connect the first chute or the second chute.

[0018] Preferably, as an improvement, a controller is further included, and the controller is used to control the third valve to close after the switching valve is connected to the first slide pipe.

[0019] Preferably, as an improvement, a fourth valve is further installed on the feed pipe.

[0020] Preferably, as an improvement, the fourth valve is a manual valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main structure of an embodiment of the present utility model. DETAILED DESCRIPTION

[0022] The following is further described in detail through specific implementation methods:

[0023] The figure marks in the drawings of the specification include: storage tank 10, feed pipe 20, fourth valve 21, switching valve 22, first chute 30, first valve 31, impeller feeder 32, second chute 40, vibrating screen 41, second valve 42, third valve 43, temporary storage bin 50, and level meter 51.

[0024] Example

[0025] Combine Figure 1 A multi-stage buffer cement discharging device includes a first chute 30 and a second chute 40, one end of which is connected to a storage tank 10 and the other end is connected to a temporary storage bin 50. The first chute 30 and the second chute 40 can both be curved pipes or bent pipes. In this embodiment, the first chute 30 and the second chute 40 are both bent pipes.

[0026] The first and second chute pipes 30 and 40 share a common feed pipe 20, which is fixedly connected to the output end of the storage tank 10. A fourth valve 21 is mounted on the feed pipe 20, which is a manual valve in practice. The feed pipe 20 forms a predetermined angle with the first and second chute pipes 30 and 40 to buffer and decelerate the dry cement discharged from the feed pipe 20 upon entering the chute.

[0027] A switching valve 22 is installed at the discharge end of the feed pipe 20. The switching valve 22 is used to connect the feed pipe 20 to the first chute 30 or the second chute 40, thereby facilitating switching of the discharge direction of the powdered cement.

[0028] A first valve 31 is installed on the first slide pipe 30 . An impeller feeder 32 is installed inside the first slide pipe 30 . The first valve 31 is located upstream of the impeller feeder 32 .

[0029] A vibrating screen 41 is connected between the second slide pipe 40 and the temporary storage bin 50. A second valve 42 is provided on the second slide pipe 40. The second valve 42 is located upstream of the vibrating screen 41. A third valve 43 is provided between the vibrating screen 41 and the temporary storage bin 50.

[0030] The first valve 31 , the second valve 42 and the third valve 43 are all electrically controlled valves or pneumatically controlled valves that can be controlled by a controller.

[0031] A material level meter 51 is provided in the temporary storage bin 50 to facilitate real-time monitoring of the cement height in the temporary storage bin 50 .

[0032] The system further includes a controller for controlling the third valve 43 to close after the switching valve 22 connects the feed pipe 20 to the first chute 30. This ensures that the powdered cement does not pass through the vibrating screen 41 and that the vibrating screen 41 is not connected to the temporary storage bin 50, thereby preventing dust from the powdered cement in the temporary storage bin 50 from entering the vibrating screen 41.

[0033] The controller is also used to automatically close the first valve 31 and stop the impeller feeder 32 after the material level meter 51 detects that the material level exceeds the preset range, thereby timely blocking the discharge of dry powder cement when there is too much material in the temporary storage bin 50, avoiding excessive cement falling into the temporary storage bin 50 and causing a full bin problem.

[0034] In this embodiment, when it is necessary to feed materials to the temporary storage bin 50 , the first valve 31 is opened, and the powdered cement is fed along the first chute 30 through the impeller feeder 32 and then fed to the temporary storage bin 50 .

[0035] Since the first chute 30 is a bent tube, when the dry powder cement turns from the feed pipe 20 to the first chute 30, the change in direction causes the first buffering speed reduction. Then, the bending structure of the first chute 30 itself causes the second buffering speed reduction. Subsequently, the dry powder cement is sent to the temporary storage bin 50 by the rotation of the impeller feeder 32, forming the third buffering speed reduction. Finally, the temporary storage bin 50 provides the final buffering speed reduction before the spiral discharge.

[0036] In the entire embodiment, the arrangement of the feed pipe 20, the first chute 30 and the impeller feeder 32 significantly reduces the speed of cement delivered to the temporary storage bin 50, thereby avoiding the problem of the temporary storage bin 50 being filled and overflowing due to the dry powder cement being delivered from the high storage tank 10 into the temporary storage bin 50 at too high a speed.

[0037] Furthermore, the presence of the impeller feeder 32 facilitates precise material delivery. This is primarily because the closing of the first valve 31 requires a certain response time, while the powdered cement falls rapidly along the first chute 30. Without the impeller feeder 32, it would be difficult to accurately control the material delivered to the temporary storage bin 50.

[0038] In addition, when the dry powder cement in the storage tank 10 is agglomerated, the dry powder cement can be sent to the vibrating screen 41 through the second chute 40, and then enter the temporary storage bin 50 after screening, thereby ensuring the quality of the cement powder sent to the temporary storage bin 50 is reliable.

[0039] The above description is merely an embodiment of the present invention, and the commonly known specific technical solutions and / or features of the solution are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be considered as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed in this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A multi-stage buffer cement discharging device, comprising a first chute connected to a storage tank at one end and a temporary storage bin at the other end, wherein the first chute is a curved or bent pipe, characterized in that: A first valve is installed on the first slide pipe, an impeller feeder is installed in the first slide pipe, and the first valve is located upstream of the impeller feeder.

2. The multi-stage buffer cement discharging device according to claim 1, characterized in that: A material level meter is provided in the temporary storage bin.

3. The multi-stage buffer cement discharging device according to claim 2, characterized in that: The device also includes a controller, which is used to control the first valve to close and the impeller feeder to stop after the material level meter detects that the material level exceeds a preset range.

4. The multi-stage buffer cement discharging device according to claim 1, characterized in that: It also includes a second slide pipe, a vibrating screen is connected between the second slide pipe and the temporary storage bin, the input end of the second slide pipe is connected to the storage tank, a second valve is provided on the second slide pipe, and the second valve is located upstream of the vibrating screen.

5. The multi-stage buffer cement discharging device according to claim 4, characterized in that: A third valve is provided between the vibrating screen and the temporary storage bin.

6. The multi-stage buffer cement discharging device according to claim 5, characterized in that: The first slide pipe and the second slide pipe share a feed pipe, and a switching valve is installed at the discharge end of the feed pipe. The switching valve is used to connect the first slide pipe or the second slide pipe.

7. The multi-stage buffer cement discharging device according to claim 6, characterized in that: It also includes a controller, which is used to control the third valve to close after the switching valve is connected to the first slide pipe.

8. The multi-stage buffer cement discharging device according to claim 6, characterized in that: A fourth valve is also installed on the feed pipe.

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