Negative pressure type box powder feeder

Abstract

The utility model discloses a negative pressure type box body powder feeder which comprises a box body, a partition plate, an upper door plate and a lower door plate, idler wheels are arranged at the bottom of the box body, the partition plate is arranged in the middle of the box body and divides the box body into an upper layer and a lower layer, an exhaust fan is arranged in the lower layer of the box body, and the exhaust fan is fixed in the box body through a bottom support. The two sides of the exhaust fan are respectively provided with a powder feeding barrel, the powder feeding barrels are rotationally connected with a support, the support is fixed to a displacement rod, the two sides of the bottom of the box body are respectively provided with a displacement rail, and the displacement rod is slidably connected with the displacement rails. The exhaust fan is arranged in the box body, so that the interior of the box body can be subjected to vacuum treatment, metal powder is prevented from being affected by air and affected by damp, meanwhile, the metal powder is prevented from floating on a circuit of the powder feeder, normal use of equipment is guaranteed, the failure rate of the equipment is reduced, and the powder feeder is convenient to use, simple to operate and easy to popularize.

Description

Technical Field

[0001] The utility model relates to a plasma spraying device, in particular to a negative pressure box powder feeder, belonging to the technical field of powder feeders. Background Art

[0002] At present, the powder barrels of powder feeders on the market are all exposed to the atmosphere. Since the powder is not used for a long time in the powder barrel, the powder will be damp. After the powder is damp, the powder in the powder barrel cannot be delivered normally and evenly. The damp powder will clump and block the powder delivery port and powder delivery tube on the powder feeder. Most of the powder is metal powder, which is conductive. The joints and powder delivery tube on the powder feeder will be damaged after a period of use. Once the damaged powder falls on the electrical part, it will cause short-circuit damage to the circuit part of the powder feeder. The powder delivery barrel is generally sealed and the remaining powder in the powder delivery barrel cannot be observed in real time, so that the remaining powder cannot be found in time during work, resulting in no powder in the powder delivery barrel while the equipment continues to run, causing a waste of time and cost. The biggest problem with traditional double-barrel powder feeders is that it is very difficult to clean up the remaining powder. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a negative pressure box powder feeder to prevent the powder feeding tube from being exposed to the air for a long time, causing the metal powder to become damp and unusable, and at the same time, to prevent the metal powder from floating in the air and causing damage to the electrical equipment.

[0004] The technical solution adopted by the utility model to solve the technical problem is:

[0005] A negative pressure box powder feeder comprises a box, a partition, an upper door plate and a lower door plate, wherein a roller is arranged at the bottom of the box, a partition is arranged in the middle of the box, and the box is divided into an upper and a lower layer, an upper door plate is arranged in front of the upper layer of the box, lower door plates are arranged on both sides and in front of the lower layer of the box, an exhaust fan is arranged inside the lower layer of the box, the exhaust fan is fixed in the box through a bottom bracket, powder delivery barrels are arranged on both sides of the exhaust fan, the powder delivery barrels are rotatably connected to the bracket, the bracket is fixed on a displacement rod, displacement tracks are arranged on both sides of the bottom of the box, and the displacement rod is slidably connected to the displacement track.

[0006] An exhaust port is arranged on the back side of the lower layer of the box body, and the air outlet of the exhaust fan is tightly connected with the exhaust port of the box body.

[0007] There are two powder feeding cylinders, and both sides of each powder feeding cylinder are rotatably connected with connecting shafts, and a load-bearing sensor is fixedly connected below the connecting shaft, and the load-bearing sensor is fixedly connected to the top of the bracket.

[0008] A rectangular through hole is dug on the front end surface of the upper layer of the box body, and an upper door plate is hinged at the rectangular through hole, and a door lock is arranged on the upper door plate.

[0009] The front end face and two side faces of the lower layer of the box body are respectively provided with rectangular through holes, and a lower door panel is hinged at each rectangular through hole, and each lower door panel is provided with a door lock, and the lower door panel is a transparent door panel.

[0010] The bracket is distributed in an inverted "T" shape, and the bracket is located at the outer end of the displacement rod, and the displacement rod is slidably connected with the displacement track through a slider.

[0011] A switch controller is arranged on the upper door panel, and the switch controller is connected to the exhaust fan through a line.

[0012] The positive beneficial effects of the utility model are:

[0013] 1. The utility model arranges the powder feeding tube in the box body and arranges an exhaust fan in the box body, so as to perform vacuum treatment on the box body, so that the powder is no longer affected by air and damp, and the metal powder is prevented from floating on the circuit of the powder feeder, thereby ensuring the normal use of the equipment.

[0014] 2. The powder delivery barrel of the utility model is rotatably connected with two supporting vertical plates, which is convenient for the staff to pour out the remaining powder in the barrel. By arranging a weighing sensor under the connecting shaft, the remaining amount of powder in the barrel can be known at any time, so that the staff can add powder in time.

[0015] 3. The utility model arranges displacement tracks on both sides of the base, and the powder delivery tube is slidably connected with the displacement track through the displacement rod, so that the staff can clean and add powder to the powder delivery tube conveniently and simply. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the powder delivery tube of the utility model being drawn out from the box;

[0018] Figure 3 This is a schematic diagram of the structure of the powder delivery tube of the utility model when it rotates;

[0019] Figure 4 It is a plane view of the powder feeding tube of the utility model when it rotates;

[0020] Figure 5 This is a plan view of the powder delivery tube of the utility model when cleaning;

[0021] Among them: 1-box, 2-partition, 3-upper door panel, 4-lower door panel, 5-roller, 6-displacement track, 7-displacement frame, 8-slide plate, 9-weighing sensor, 10-connecting shaft, 11-powder delivery cylinder, 12-bottom bracket, 13-exhaust fan, 14-exhaust port. DETAILED DESCRIPTION

[0022] The utility model is further explained and illustrated below in conjunction with the accompanying drawings:

[0023] For example, see Figure 1-Figure 5 A negative pressure box powder feeder comprises a box 1, a partition 2, an upper door plate 3 and a lower door plate 4, a roller 5 is arranged at the bottom of the box 1, a partition 2 is arranged in the middle of the box 1, and the box 1 is divided into an upper layer and a lower layer, an upper door plate 3 is arranged in front of the upper layer of the box 1, and lower door plates 4 are respectively arranged on both sides and in front of the lower layer of the box 1, and an exhaust fan 13 is arranged inside the lower layer of the box 1, and the exhaust fan 13 is fixed in the box 1 through a bottom bracket 12, and powder delivery barrels 11 are respectively arranged on both sides of the exhaust fan 13, and the powder delivery barrel 11 is rotatably connected with a bracket 8, and the bracket 8 is fixed on a displacement rod 7, and displacement tracks 6 are respectively arranged on both sides of the bottom of the box 1, and the displacement rod 7 is slidably connected with the displacement track 6.

[0024] An exhaust port 14 is provided on the back of the lower layer of the box body 1 , and the air outlet of the exhaust fan 13 is tightly connected to the exhaust port 14 of the box body 1 .

[0025] There are two powder feeding cylinders 11 , and both sides of each powder feeding cylinder 11 are rotatably connected with a connecting shaft 10 , and a load-bearing sensor 9 is fixedly connected below the connecting shaft 10 , and the load-bearing sensor 9 is fixedly connected to the top of the bracket 8 .

[0026] A rectangular through hole is dug on the front end surface of the upper layer of the box body 1, and an upper door panel 3 is hinged at the rectangular through hole, and a door lock is arranged on the upper door panel 3.

[0027] Rectangular through holes are respectively dug on the front end face and two side faces of the lower layer of the box body 1, and a lower door panel 4 is hinged at each rectangular through hole. Each lower door panel 4 is provided with a door lock, and the lower door panel 4 is a transparent door panel.

[0028] The bracket 8 is distributed in an inverted "T" shape, and the bracket 8 is located at the outer end of the displacement rod 7. The displacement rod 7 is slidably connected to the displacement track 6 through a slider.

[0029] A switch controller is provided on the upper door panel 3 , and the switch controller is connected to the exhaust fan 13 via a line.

[0030] In the above description, there are two powder delivery cylinders, which are respectively located on both sides of the base, and each powder delivery cylinder can be pulled out of the box body by a displacement rod.

[0031] In the above description, the top of the bracket is distributed in a groove shape, the connecting shaft is located in the groove, and is fixedly connected to the weighing sensor, and the weighing sensor is fixed in the groove.

[0032] In the above description, there are four rollers, which are respectively located at the four corners of the bottom of the box.

[0033] In the above description, the box on the upper layer of the partition is used to house the electric wires.

[0034] In the above description, the exhaust fan is located in the middle of the lower layer of the box.

[0035] In the above description, the powder delivery tube is the existing technology, so the structure of the powder delivery tube is no longer described in detail. By equipping the bottom of the powder feeder with four rollers, it is convenient to move the powder delivery tube to the appropriate position; the powder is delivered to the designated position through the powder delivery tube in a uniform and stable state under the rotation of the scraper driven by the motor. The powder feeder is a high-precision powder delivery mechanism with a rotary scraper output. The powder delivery is uniform. The powder feeder can deliver powder with a wide particle size of 5-150μm, the maximum powder delivery speed can reach 180g / min, and the powder delivery accuracy is ±1%. By setting a weighing sensor under the connecting shaft, the remaining powder weight can be displayed in real time. If one powder is insufficient, another powder barrel can be used to continue to evenly deliver the powder. At this time, the insufficient powder barrel cover can be opened to add the required powder; the powder delivery uses a small flow of nitrogen or argon as the powder delivery gas. The powder rotates to the powder outlet with the scraper, and enters the powder delivery pipeline with the powder delivery gas to the designated position, which saves more gas than the traditional medium and high pressure powder feeder.

[0036] The utility model arranges an exhaust fan in the box body, which can perform vacuum treatment on the box body, so that the metal powder is not affected by air and damp, and at the same time, it also prevents the metal powder from floating on the circuit of the powder feeder, thereby ensuring the normal use of the equipment and reducing the failure rate of the equipment. The utility model is convenient to use, simple to operate and easy to promote.

Claims

1. A negative pressure box powder feeder, comprising a box (1), a partition (2), an upper door plate (3) and a lower door plate (4), characterized in that: A roller (5) is arranged at the bottom of the box body (1), a partition (2) is arranged in the middle of the box body (1), and the box body (1) is divided into an upper layer and a lower layer. An upper door panel (3) is arranged in front of the upper layer of the box body (1), and lower door panels (4) are arranged on both sides and in front of the lower layer of the box body (1). An exhaust fan (13) is arranged inside the lower layer of the box body (1), and the exhaust fan (13) is fixed in the box body (1) through a bottom bracket (12). Powder delivery barrels (11) are arranged on both sides of the exhaust fan (13), and the powder delivery barrels (11) are rotatably connected to the bracket (8). The bracket (8) is fixed on the displacement rod (7). Displacement tracks (6) are arranged on both sides of the bottom of the box body (1), and the displacement rod (7) is slidably connected to the displacement track (6).

2. A negative pressure box powder feeder according to claim 1, characterized in that: An exhaust port (14) is provided on the back side of the lower layer of the box body (1), and the air outlet of the exhaust fan (13) is tightly connected to the exhaust port (14) of the box body (1).

3. The negative pressure box powder feeder according to claim 1, characterized in that: There are two powder delivery barrels (11), and two sides of each powder delivery barrel (11) are rotatably connected to a connecting shaft (10), a load-bearing sensor (9) is fixedly connected below the connecting shaft (10), and the load-bearing sensor (9) is fixedly connected to the top of the bracket (8).

4. The negative pressure box powder feeder according to claim 1, characterized in that: A rectangular through hole is excavated on the front end surface of the upper layer of the box body (1), and an upper door panel (3) is hingedly connected to the rectangular through hole. A door lock is arranged on the upper door panel (3).

5. The negative pressure box powder feeder according to claim 1, characterized in that: The front end face and two side faces of the lower layer of the box body (1) are respectively provided with rectangular through holes, and a lower door panel (4) is hingedly connected at each rectangular through hole, and each lower door panel (4) is provided with a door lock, and the lower door panel (4) is a transparent door panel.

6. The negative pressure box powder feeder according to claim 1, characterized in that: The bracket (8) is arranged in an inverted "T" shape, and the bracket (8) is located at the outer end of the displacement rod (7), and the displacement rod (7) is slidably connected to the displacement track (6) via a slider.

7. The negative pressure box powder feeder according to claim 1, characterized in that: A switch controller is provided on the upper door panel (3), and the switch controller is connected to the exhaust fan (13) via a line.

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