Gravity driving device capable of quantitatively adjusting opening and closing of door body

Abstract

A gravity driving device capable of quantitatively adjusting opening and closing of a door body comprises a connecting rod, a long hole is formed in one end of the connecting rod, and a bolt penetrates through the long hole and locks a heavy hammer block. A first connecting rod is fixed to the rotating shaft, the other end of the first connecting rod is hinged to a second connecting rod, and the second connecting rod is hinged to a lug plate on one side of the door body. According to the gravity driving device capable of quantitatively adjusting opening and closing of the door body, quantitative adjustment can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the door body of air locking screw feeder, in particular to a gravity drive device capable of quantitatively adjusting the opening and closing of the door body. BACKGROUND

[0002] In the conveying system of powder coal, grain oil and other logistics, the system often has positive pressure, and sometimes the logistics is discontinuous or too small. At this time, there is a large residual space in the shell, which produces backfire or back air, which brings certain safety hazards to production safety and personal safety of workers. The air locking screw feeder can effectively solve the above problems.

[0003] The air locking screw feeder needs to drive the air locking piston door by the weight to realize the material blocking and air locking effect. In the existing use of the weight, one kind of weight is fixed, and under different working conditions, the weight of the weight can only be changed by increasing or reducing the number of the weight to adapt to different adjustment force requirements, thereby causing high cost of changing the size of the adjustment force, and it is not convenient to finely adjust according to the working condition. The patent "adjustable air locking screw feeder" with the application number "202022312185.3" is a patent previously applied by the company. The device also has a gravity drive device. Although the position of the weight is adjustable, the position of the weight in the long waist round hole of the connecting rod can be adjusted, but it is not easy to position in actual use, and fine quantitative adjustment cannot be realized. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a gravity drive device capable of quantitatively adjusting the opening and closing of the door body. The force arm of the weight is changed for adjustment, so that more detailed and accurate adjustment can be made according to the specific situation of the material quantity, and flexibility is improved.

[0005] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0006] A gravity drive device capable of quantitatively adjusting the opening and closing of the door body, comprising a connecting rod, a long hole is opened at one end of the connecting rod, a bolt passes through the long hole and locks the weight block; the other end of the connecting rod is installed on a rotating shaft, a first connecting rod is fixed on the rotating shaft, a second connecting rod is hinged at the other end of the first connecting rod, and the second connecting rod is hinged with an ear plate on one side of the door body.

[0007] A plurality of grooves are arranged on one side or both sides of the long hole edge along the length direction, and the grooves limit the bolt.

[0008] Digital marks are sequentially arranged above the grooves on the connecting rod.

[0009] The utility model provides a gravity drive device capable of quantitatively adjusting the opening and closing of the door body, which has the following technical effects:

[0010] 1) The traditional mode of adjusting the gravity moment by increasing or decreasing the number of weights is changed to adjusting the gravity moment by changing the actual length of the lever arm. This eliminates the need to purchase additional weight blocks, saving costs. At the same time, since the mass of each weight block is constant, changing the number of weights will cause the gravity moment to increase or decrease exponentially, resulting in an adjustment amount that is too large or too small, making it impossible to perform more refined adjustments.

[0011] 2) In this application, by setting a long hole and adding multiple sets of grooves on the long hole, positioning can be achieved to ensure that it does not move after adjustment.

[0012] 3) By setting corresponding digital labels, quantitative adjustment can be made to reduce the difficulty of adjustment.

[0013] 4) By setting the first connecting rod, the second connecting rod and the rotating shaft, a gravity drive device for opening and closing the door body can be formed together with the weight hammer adjustment component, so that the door body can be opened or closed spontaneously under the action of material propulsion and gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a front view of the heavy hammer and connecting rod in the utility model.

[0016] Figure 2 It is a top view of the heavy hammer and connecting rod in the utility model.

[0017] Figure 3 This is a schematic diagram of the first working state of the utility model.

[0018] Figure 4 This is a schematic diagram of the second working state of the utility model.

[0019] In the figure: connecting sleeve 1, connecting rod 2, heavy hammer block 3, bolt 4, spring washer 5, nut 6, long hole 7, groove 8, digital mark 9, rotating shaft 10, first connecting rod 11, second connecting rod 12, door body 13, screw shaft 14, discharge port 15. DETAILED DESCRIPTION

[0020] like Figures 1-4 As shown, a gravity-driven device for quantitatively adjusting the opening and closing of a door comprises a connecting rod 2 having an elongated hole 7 at one end. A plurality of grooves 8 are arranged at equal intervals along the length of the elongated hole 7 below the connecting rod 2. Numerical markings 9 are provided above the elongated hole 7. A weight block 3 is mounted on the connecting rod 2 at the end of the elongated hole 7. The weight block 3 is composed of multiple circular plates with holes. A bolt 4 passes through the weight block 3 and the elongated hole 7 in the connecting rod 2 and is then tightened with a nut 6. A spring washer 5 is placed under the nut 6 to prevent it from loosening.

[0021] The digital mark 9 not only indicates the position, but also can be used to calculate and conduct on-site tests based on the specific size and structure of the actual on-site equipment to correspond the gravity moment to the discharge amount, with each groove 8 corresponding to a discharge amount.

[0022] A connecting sleeve 1 is welded to the other end of the connecting rod 2, and a keyway is provided on the connecting sleeve 1. The connecting sleeve 1 is mounted on the rotating shaft 10 by means of a flat key or the like. When the connecting rod 2 rotates, the rotating shaft 10 is synchronously driven to rotate. Both ends of the rotating shaft 10 are rotatably mounted on the housing of the air-locking screw feeder through bearing assemblies. The connecting rod 2 is located outside the housing of the air-locking screw feeder. Inside the housing of the air-locking screw feeder and located on the rotating shaft 10, there are first connecting rods 11 that are detachably fixed at intervals on the left and right sides. The other end of each first connecting rod 11 is hinged to the second connecting rod 12, and the other end of the second connecting rod 12 is hinged to the door body 13. The door body 13 is mounted on the screw shaft 14 of the air-locking screw feeder and can translate left and right relative to the screw shaft 14.

[0023] Here, the first connecting rod 11 and the second connecting rod 12 are both spaced apart from the screw shaft 14 and do not interfere with each other.

[0024] Working principle and process:

[0025] 1) If Figure 3 As shown, the spiral blades on the spiral shaft 14 on the right side of the door body 13 drive the materials to gather continuously to the left. When the door body 13 is filled with materials, the materials are continuously squeezed and generate a certain thrust. When the thrust can overcome the gravity of the hammer block 3, the materials push the door body 13 to move to the left, and the door body 13 drives the first connecting rod 11 and the second connecting rod 12 to move or rotate, thereby causing the rotating shaft 10 to rotate clockwise. The rotating shaft 10 drives the connecting rod 2 and the hammer block 3 to rotate clockwise. At this time, the discharge port 15 of the air-locking screw feeder is opened, and the discharge is completed. The state is as follows: Figure 4 As shown;

[0026] 2) When the material is insufficient, under the action of the gravity of the weight block 3, the weight block 3 drives the connecting rod 2 to rotate counterclockwise downward around the rotating shaft 10. At this time, the first connecting rod 11 and the second connecting rod 12 push the door body 13 to move to the right, and the door body 13 is closed again.

[0027] 3) When the door 13 needs to be opened or closed according to different material quantities, the position of the weight block 3 can be adjusted by changing the position of the bolt 4 in the slot, thereby changing the lever arm and thus adjusting the gravity torque of the weight block 3 to achieve opening or closing of the door 13 under different material quantities. The groove 8 is provided to ensure that the bolt 4 can be positioned after being adjusted to different positions. The digital mark 9 is provided to make it easier for the user to confirm the position of the weight block 3.

Claims

1. A gravity-driven device capable of quantitatively adjusting the opening and closing of a door, characterized in that: The invention comprises a connecting rod (2), one end of which is provided with a long hole (7), a bolt (4) passes through the long hole (7) and locks the heavy hammer block (3); the other end of the connecting rod (2) is mounted on a rotating shaft (10), a first connecting rod (11) is fixed on the rotating shaft (10), the other end of the first connecting rod (11) is hingedly connected to a second connecting rod (12), and the second connecting rod (12) is hingedly connected to an ear plate on one side of the door body (13).

2. The gravity-driven device capable of quantitatively adjusting the opening and closing of a door according to claim 1, characterized in that: The edge of the long hole (7) is provided with a plurality of grooves (8) at intervals on one side or both sides along the length direction, and the grooves (8) limit the position of the bolts (4).

3. The gravity-driven device capable of quantitatively adjusting the opening and closing of a door according to claim 1, characterized in that: Numerical markings (9) are sequentially provided above the corresponding grooves (8) on the connecting rod (2).

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