Anti-blocking powder pneumatic conveying device

Abstract

The utility model relates to the technical field of powder conveying equipment, and discloses an anti-blocking powder pneumatic conveying device which comprises a powder conveying tank, the center of the top of the powder conveying tank is fixedly communicated with a feeding pipe, the bottom of the powder conveying tank is fixedly communicated with a discharging pipe, the bottom end of the discharging pipe is fixedly communicated with a pneumatic conveying pipe, and the bottom end of the pneumatic conveying pipe is fixedly communicated with a discharging pipe. The automatic discharging adjusting assembly comprises a powder temporary storage tank arranged in the powder conveying tank, sliding rods are fixedly connected to the inner wall of the powder conveying tank in the circumferential direction at equal intervals through connecting bases, sliding blocks are slidably connected to the outer portions of the sliding rods, the sliding blocks are fixedly connected with the powder temporary storage tank, springs are arranged on the outer portions of the sliding rods in a sleeving mode, and the springs are fixedly connected with the powder temporary storage tank. The two groups of material blocking plates are symmetrically hinged to the bottom of the powder temporary storage tank, connecting rods are hinged between the material blocking plates and the inner wall of the powder conveying tank, and the problem that due to the fact that the discharging amount of powder is difficult to control, a pipeline is prone to being blocked is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder conveying equipment, in particular to a powder pneumatic conveying device for preventing blockage. Background Technique

[0002] The pneumatic conveying device belongs to medium-pressure dense-phase pneumatic conveying and is suitable for conveying particles that are not easy to break and powder materials. It is widely used in industries such as casting, chemical industry, medicine, and grain.

[0003] In the Chinese utility model patent with the publication number of CN219928968U, a dust pneumatic conveying device is disclosed. The device passes the air discharged by the negative pressure fan into the air outlet pipe. The air enters the housing and impacts the blades to drive the blades to rotate, thereby driving the hollow rotating rod, the hollow rod, and the hollow plate to rotate, so that the hollow plate stirs the dust accumulated at the top of the first filter screen to prevent the dust from blocking the first filter screen. In view of the above-related technologies, the inventor believes that there are the following defects:

[0004] When the device is actually used, due to the large amount of powder in the tank body and the lack of an integrated structure that can control the powder feeding amount, the filtered powder will fall into the connecting pipe in a large amount at one time, which is likely to cause the situation of pipeline blockage, thereby affecting the conveying of the powder. For this reason, we provide a powder pneumatic conveying device for preventing blockage. Summary of the Utility Model

[0005] To solve the problem of pipeline blockage that is likely to occur due to the difficulty in controlling the powder feeding amount in the above background technique, the utility model provides a powder pneumatic conveying device for preventing blockage.

[0006] The utility model is realized by adopting the following technical solutions: A powder pneumatic conveying device for preventing blockage, comprising:

[0007] A powder conveying tank, the top center of the powder conveying tank is fixedly communicated with a feeding pipe, the bottom of the powder conveying tank is fixedly communicated with a discharging pipe, and the bottom end of the discharging pipe is fixedly communicated with a pneumatic conveying pipe;

[0008] An automatic feeding adjustment component, the automatic feeding adjustment component includes a powder temporary storage tank arranged inside the powder conveying tank, a filter plate is fixedly connected inside the powder temporary storage tank, the inner wall of the powder conveying tank is fixedly connected with sliding rods at equal intervals in the circumferential direction through connecting seats, the outside of the sliding rods is slidably connected with sliders and the sliders are fixedly connected with the powder temporary storage tank, and springs are sleeved outside the sliding rods;

[0009] Two groups of baffle plates, the two groups of baffle plates are symmetrically hinged at the bottom of the powder temporary storage tank, and a connecting rod is hinged between the baffle plates and the inner wall of the powder conveying tank.

[0010] As a further improvement of the above solution, a hollow tube is rotatably connected to the lower part of the inner cavity of the powder conveying tank through a bracket. The center of the bottom of the filter plate is fixedly connected with a vertical rod, and the bottom end of the vertical rod extends into the hollow tube. The bottom end of the vertical rod is fixedly connected with a connecting piece, and the connecting piece is symmetrically movably connected with rolling balls. A spiral groove is formed in the inner wall of the hollow tube corresponding to the position of the rolling balls, and a screw blade is fixedly connected to the outer side of the lower part of the hollow tube.

[0011] As a further improvement of the above solution, the bottom of the inner cavity of the powder conveying tank is designed in a funnel shape.

[0012] As a further improvement of the above solution, the filter plate is uniformly provided with filter holes penetrating through the filter plate.

[0013] As a further improvement of the above solution, both ends of the spring are fixedly connected to the slider and the connecting seat respectively.

[0014] As a further improvement of the above solution, the rolling balls are adapted to the spiral grooves.

[0015] As a further improvement of the above solution, a sealing ring is provided at the movable connection between the vertical rod and the hollow tube.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. By adding powder materials into the powder storage tank of the present utility model, the filter plate inside can filter large particles in the powder materials, thus ensuring the stability of powder conveying. At the same time, due to the addition of the powder materials, the overall mass of the powder storage tank is increased, and the sliding cooperation between the sliding rod and the slider is utilized, so that the powder storage tank will vertically move downward and compress the spring. The downward movement of the powder storage tank will also drive the baffle plate to move downward. By using the hinge action between the baffle plate, the inner wall of the powder conveying tank and the connecting rod, two groups of baffle plates can be driven to rotate towards the inner side at the same time. As the powder materials inside the powder storage tank continuously decrease, under the rebounding action of the spring, the powder storage tank will automatically move upward, thereby driving the two groups of baffle plates to rotate towards the outer side at the same time, and then achieving the purpose of reducing the size of the feeding port when the powder material amount is large and increasing the size of the feeding port when the powder material amount is small to automatically adjust the feeding amount. It has strong practicability and effectively avoids the problem of pipeline blockage easily caused by difficult control of the powder feeding amount.

[0018] 2. During the vertical movement of the powder temporary storage tank according to the weight, the movement of the powder temporary storage tank will also drive the vertical rod to move together. The movement of the vertical rod will drive the movement of the ball which is rotationally connected to it through the connecting piece. By utilizing the cooperation between the ball and the spiral groove, the hollow tube can be driven to rotate, and then the auger blade can be driven to rotate to stir the powder in the discharge pipe, further preventing the problem of powder blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 is a longitudinal sectional three-dimensional structural schematic diagram of the present utility model;

[0021] Figure 3 is a three-dimensional structural schematic diagram of the powder temporary storage tank of the present utility model;

[0022] Figure 4 is a longitudinal sectional three-dimensional schematic diagram of the connection structure of the hollow tube, vertical rod, ball and spiral groove of the present utility model.

[0023] MAIN SYMBOL DESCRIPTION:

[0024] 1. Powder conveying tank; 2. Feeding pipe; 3. Pneumatic conveying pipe; 101. Powder temporary storage tank; 102. Filter plate; 103. Slide bar; 104. Slide block; 105. Spring; 106. Baffle plate; 107. Link; 201. Hollow tube; 202. Vertical rod; 203. Connecting piece; 204. Ball; 205. Spiral groove; 206. Auger blade. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, in combination with the drawings and specific embodiments, the present utility model will be further described. It should be noted that on the premise of no conflict, the following described embodiments or technical features can be arbitrarily combined with each other to form new embodiments.

[0026] Embodiment 1:

[0027] Please refer to Figures 1-4 , a powder pneumatic conveying device for preventing blockage in this embodiment includes:

[0028] A powder conveying tank 1, the top center of the powder conveying tank 1 is fixedly communicated with a feeding pipe 2, the bottom of the powder conveying tank 1 is fixedly communicated with a discharge pipe, the bottom end of the discharge pipe is fixedly communicated with a pneumatic conveying pipe 3, and the bottom cavity of the powder conveying tank 1 is designed as a funnel-shaped structure, which is convenient for the powder to quickly enter the discharge pipe and effectively prevents the powder from remaining in the powder conveying tank 1;

[0029] Automatic blanking adjustment component. The automatic blanking adjustment component includes a powder temporary storage tank 101 arranged inside the powder conveying tank 1. A filter plate 102 is fixedly connected inside the powder temporary storage tank 101. The inner wall of the powder conveying tank 1 is fixedly connected with sliding rods 103 at equal intervals in the circumferential direction through connecting seats. A slider 104 is slidably connected to the outside of the sliding rod 103, and the slider 104 is fixedly connected to the powder temporary storage tank 101. A spring 105 is sleeved on the outside of the sliding rod 103, and both ends of the spring 105 are fixedly connected to the slider 104 and the connecting seat respectively. Filter holes penetrating the filter plate 102 are evenly formed on the filter plate 102, which can filter large particles in the powder, thus ensuring the stability of subsequent powder pneumatic conveying;

[0030] Two groups of baffle plates 106 are symmetrically hinged at the bottom of the powder temporary storage tank 101, and a connecting rod 107 is hinged between the baffle plate 106 and the inner wall of the powder conveying tank 1.

[0031] A hollow tube 201 is rotatably connected to the lower part of the inner cavity of the powder conveying tank 1 through a bracket. The bottom center of the filter plate 102 is fixedly connected with a vertical rod 202, and the bottom end of the vertical rod 202 extends into the inside of the hollow tube 201. A connecting piece 203 is fixedly connected to the bottom end of the vertical rod 202. Two balls 204 are symmetrically movably connected to the connecting piece 203. A spiral groove 205 is formed in the inner wall of the hollow tube 201 corresponding to the position of the balls 204. The balls 204 are adapted to the spiral groove 205. A screw blade 206 is fixedly connected to the outer side of the lower part of the hollow tube 201.

[0032] In the embodiment of the present application, the implementation principle of an anti-blocking powder pneumatic conveying device is as follows: Powders are added into the powder conveying tank 1 through the feeding pipe 2, and the powders will enter the powder temporary storage tank 101. The filter plate 102 inside the powder temporary storage tank 101 can filter out large particles in the powders, thus ensuring the stability of powder conveying. Since the filtering of powders is a continuous process, as the powders are continuously added, the overall mass of the powder temporary storage tank 101 also increases. By utilizing the sliding fit between the sliding rod 103 and the slider 104, the powder temporary storage tank 101 will vertically move downward and compress the spring 105. The downward movement of the powder temporary storage tank 101 will also drive the baffle plate 106 to move downward. By utilizing the hinge action between the baffle plate 106, the inner wall of the powder conveying tank 1 and the connecting rod 107, it is possible to drive the two baffle plates 106 to rotate inward simultaneously. As the powders inside the powder temporary storage tank 101 continuously decrease, under the rebounding action of the spring 105, the powder temporary storage tank 101 will automatically move upward again, thereby driving the two baffle plates 106 to rotate outward simultaneously. Thus, the purpose of automatically adjusting the feeding amount is achieved by reducing the size of the feeding port when the powder amount is large and increasing the size of the feeding port when the powder amount is small. Moreover, the movement of the powder temporary storage tank 101 can prevent powders from accumulating and blocking on the filter plate 102. At the same time, during the vertical movement of the powder temporary storage tank 101 with the change in weight, the movement of the powder temporary storage tank 101 will also drive the vertical rod 202 to move together. The movement of the vertical rod 202 will drive the ball 204 rotatably connected to it through the connecting piece 203 to move. By utilizing the cooperation between the ball 204 and the spiral groove 205, it is possible to drive the hollow tube 201 to rotate, thereby driving the auger blade 206 to rotate to agitate the powders inside the discharge pipe, further preventing the problem of powder blockage. When the powders enter the pneumatic conveying pipe 3, they will be conveyed by air pressure.

[0033] Embodiment 2:

[0034] Based on Embodiment 1, a further improvement in this embodiment is that a sealing ring is provided at the movable connection between the vertical rod 202 and the hollow tube 201, which can prevent powders from entering the inside of the hollow tube 201.

[0035] The above-mentioned implementation manners are only the preferred implementation manners of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the protection scope required by the present invention.

Claims

1. A powder pneumatic conveying device for preventing blockage, characterized in that, Including: A powder conveying tank (1), a feeding pipe (2) is fixedly communicated with the center of the top of the powder conveying tank (1), a discharging pipe is fixedly communicated with the bottom of the powder conveying tank (1), and a pneumatic conveying pipe (3) is fixedly communicated with the bottom end of the discharging pipe; An automatic feeding adjustment assembly, the automatic feeding adjustment assembly includes a powder temporary storage tank (101) arranged inside the powder conveying tank (1), a filter plate (102) is fixedly connected inside the powder temporary storage tank (101), sliding rods (103) are fixedly connected to the inner wall of the powder conveying tank (1) at equal intervals in the circumferential direction through connecting seats, a slider (104) is slidably connected to the outside of the sliding rod (103), and the slider (104) is fixedly connected to the powder temporary storage tank (101), and a spring (105) is sleeved on the outside of the sliding rod (103); Two groups of baffle plates (106), the two groups of baffle plates (106) are symmetrically hinged to the bottom of the powder temporary storage tank (101), and a connecting rod (107) is hinged between the baffle plate (106) and the inner wall of the powder conveying tank (1).

2. The powder pneumatic conveying device for preventing blockage according to claim 1, wherein A hollow tube (201) is rotatably connected to the lower part of the inner cavity of the powder conveying tank (1) through a bracket, a vertical rod (202) is fixedly connected to the center of the bottom of the filter plate (102), and the bottom end of the vertical rod (202) extends into the hollow tube (201), a connecting piece (203) is fixedly connected to the bottom end of the vertical rod (202), ball bearings (204) are symmetrically movably connected to the connecting piece (203), spiral grooves (205) are formed in the inner wall of the hollow tube (201) at positions corresponding to the ball bearings (204), and a auger blade (206) is fixedly connected to the outer side of the lower part of the hollow tube (201).

3. The powder pneumatic conveying device for preventing blockage according to claim 1, characterized in that The bottom of the inner cavity of the powder conveying tank (1) is designed as a funnel-shaped structure.

4. A powder pneumatic conveying device for preventing blockage according to claim 1, characterized in that, Filter holes penetrating through the filter plate (102) are uniformly formed in the filter plate (102).

5. The powder pneumatic conveying device for preventing blockage according to claim 1, characterized in that, Both ends of the spring (105) are fixedly connected to the slider (104) and the connecting seat respectively.

6. The powder pneumatic conveying device for preventing blockage according to claim 2, wherein The ball bearings (204) are adapted to the spiral grooves (205).

7. The powder pneumatic conveying device for preventing blockage according to claim 2, characterized in that, A sealing ring is provided at the movable connection between the vertical rod (202) and the hollow tube (201).

Images