Automatic pressure adjusting air door of sand bin

Abstract

The utility model discloses an automatic pressure regulating air door for a sand bin, which belongs to the technical field of resin sand production and is technically characterized by comprising a sand bin component, an air door component and a control component. According to the resin sand bin disclosed by the utility model, when resin sand is fed into the sand bin body during resin sand production operation, in order to avoid negative pressure in the sand bin body caused by the fact that air in the sand bin body is sucked in by a high-pressure dust remover, the air door assembly can be arranged on the sand bin body; when the sand bin is in use, the closing door is opened, so that external air is sucked into the sand bin body, the influence on subsequent resin sand production is avoided, and when the sand bin is in specific use, the opening of the closing door can be controlled through the control assembly, so that the closing door can be opened before negative pressure is formed in the sand bin body, and the influence on the quality of a resin sand mold can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of resin sand production, in particular to an automatic air door for regulating the pressure of a sand storage. Background Art

[0002] In the resin sand casting assembly line operation, the sand storage above the sand mixer is generally equipped with a high-pressure dust collector. Its main function is to absorb the dust generated by pneumatic transport into the sand storage, to prevent the dust from overflowing and affecting the production workshop environment.

[0003] When the sand mixer and pneumatic conveying are working at the same time, due to the small amount of sand in the sand storage and the excessive suction of the high-pressure dust collector, a certain negative pressure is generated in the sand storage, which causes large fluctuations in the sand quantity of the sand mixer, which is bound to affect the quality of the resin sand mold, bring unnecessary trouble to production and increase production costs. For this reason, we propose an automatic adjustment damper for the sand storage pressure to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a damper for automatically regulating the pressure of a sand storage to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] The sand storage pressure automatic regulating damper comprises a sand storage assembly, a damper assembly is mounted on the sand storage assembly, and a control assembly is mounted inside the damper assembly;

[0007] The sand storage assembly includes a sand storage body, the upper end of which is provided with a feed trough and an air outlet, and the lower end of which is provided with a discharge trough;

[0008] The damper assembly includes an outer frame, a mounting frame, a closed door and a hinge. One side end of the outer frame is hollowed out, and an adjustment slot is provided at the lower end of the outer frame. The outer frame is installed in the air outlet, and the mounting frame is installed on the outer frame. The closed door is arranged in the outer frame, and the closed door is arranged at one end of the mounting frame. The hinge connects the mounting frame and the closed door.

[0009] Preferably, the control assembly includes a rotating member, a connecting rod and a fixed member, the fixed member is mounted on the closed door, the connecting rod is mounted on the fixed member, and the rotating member is rotatably arranged on the connecting rod.

[0010] Preferably, the control assembly further comprises a lifting member and a telescopic member, the telescopic member is mounted on the rotating member, and the lifting member is mounted on the telescopic member.

[0011] Preferably, a limiting groove is provided on an inner wall of one side of the outer frame, and the lifting member is slidably arranged in the limiting groove.

[0012] Preferably, a motor is installed in the limiting groove, and a screw rod is installed at the output end of the motor.

[0013] Preferably, the lifting member is threadedly arranged on the screw rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The damper assembly can be used to adjust the pressure inside the sand storage assembly when there is negative pressure inside the sand storage assembly, thereby avoiding large fluctuations in the sand quantity of the sand mixer, thereby avoiding affecting the quality of the resin sand mold and reducing production costs.

[0016] 2. The control component can be used to adjust the pressure inside the sand storage component in an automatic manner, and the closed door can be automatically opened by the control component, thereby expanding the use range and application scenarios of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0018] Figure 2 This is a first partial stereogram of the present invention;

[0019] Figure 3 This is the first partial exploded view of the utility model;

[0020] Figure 4 It is a cross-sectional view of the utility model;

[0021] Figure 5 It is a second partial stereoscopic view of the present invention.

[0022] In the figure: 1. Sand storage assembly; 11. Sand storage body; 2. Damper assembly; 21. Outer frame; 22. Mounting frame; 23. Closing door; 24. Hinge; 3. Control assembly; 31. Motor; 32. Screw; 33. Lifting part; 34. Telescopic part; 35. Rotating part; 36. Connecting rod; 37. Fixing part. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 5The utility model provides a sand storage pressure automatic regulating damper, comprising a sand storage component 1, a damper component 2 is installed on the sand storage component 1, and a control component 3 is installed in the damper component 2;

[0025] The sand storage assembly 1 includes a sand storage body 11, the upper end of the sand storage body 11 is provided with a feed trough and an air outlet, and the lower end of the sand storage body 11 is provided with a discharge trough;

[0026] The damper assembly 2 includes an outer frame 21, a mounting frame 22, a closed door 23 and a hinge 24. One side end of the outer frame 21 is hollowed out, and an adjustment slot is provided at the lower end of the outer frame 21. The outer frame 21 is installed in the air outlet, the mounting frame 22 is installed on the outer frame 21, the closed door 23 is arranged in the outer frame 21, and the closed door 23 is arranged at one end of the mounting frame 22. The hinge 24 connects the mounting frame 22 and the closed door 23.

[0027] Specifically, when feeding resin sand into the sand storage body 11, in order to prevent dust from spreading into the surrounding environment, a high-pressure dust collector is provided above it. The air near the feed trough of the sand storage body 11 is sucked in to prevent dust from spreading. During the suction, the air inside the sand storage body 11 may be sucked in as well. At this time, the inside of the sand storage body 11 will be in a negative pressure state. In order to avoid affecting subsequent production operations, a damper assembly 2 can be installed on the sand storage body 11, and the sand storage body 11 is connected to the outer frame 21. At this time, the closed door 23 can be opened to allow outside air to enter the sand storage body 11, thereby avoiding negative pressure inside the sand storage body 11. When in use, the closed door 23 and the mounting frame 22 are connected by the hinge 24, so that the closed door 23 can be stably set.

[0028] In this embodiment, the control component 3 includes a rotating part 35, a connecting rod 36 and a fixed part 37, the fixed part 37 is installed on the closed door 23, the connecting rod 36 is installed on the fixed part 37, and the rotating part 35 is rotatably set on the connecting rod 36; the control component 3 also includes a lifting part 33 and a telescopic part 34, the telescopic part 34 is installed on the rotating part 35, and the lifting part 33 is installed on the telescopic part 34; a limiting groove is provided on the inner wall of one side of the outer frame 21, and the lifting part 33 is slidably set in the limiting groove; a motor 31 is installed in the limiting groove, and a screw rod 32 is installed at the output end of the motor 31; the lifting part 33 is threadedly set on the screw rod 32.

[0029] Specifically, during actual use, the negative pressure inside the sand storage body 11 can be avoided in advance by controlling the opening of the closed door 23. At this time, it is only necessary to run the motor 31 to drive the screw rod 32 to rotate, and then drive the lifting member 33 to rise. When the lifting member 33 rises, the telescopic member 34 and the rotating member 35 will be driven to rise together, so that the closed door 23 can be opened, and the rotating member 35 will rotate accordingly during the opening of the closed door 23. When the lifting member 33 moves to the highest point, the closed door 23 is fully opened, allowing outside air to enter the interior of the sand storage body 11.

[0030] The working principle and usage process of the present invention are as follows: during the resin sand production operation, when resin sand is fed into the sand storage body 11, in order to avoid the high-pressure dust collector from sucking in the air inside the sand storage body 11, thereby causing negative pressure inside the sand storage body 11, a damper assembly 2 can be provided on the sand storage body 11. When the sand storage body 11 is under negative pressure, the closed door 23 will open, thereby sucking in the outside air into the sand storage body 11, thereby avoiding affecting the subsequent production of resin sand. During specific use, the opening of the closed door 23 can be controlled by the control assembly 3, so that the closed door 23 can be opened before the negative pressure inside the sand storage body 11, thereby avoiding affecting the quality of the resin sand mold.

[0031] The electronic components and modules used in the content of this utility model can be parts commonly used in the market that can realize the specific functions of this case, and the specific models and sizes can be selected and adjusted according to actual needs.

[0032] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. Automatically adjust the damper of sand storage pressure, which is characterized by: It comprises a sand storage assembly (1), a damper assembly (2) is mounted on the sand storage assembly (1), and a control assembly (3) is mounted inside the damper assembly (2); The sand storage assembly (1) comprises a sand storage body (11), the upper end of the sand storage body (11) is provided with a feed trough and an air outlet, and the lower end of the sand storage body (11) is provided with a discharge trough; The damper assembly (2) comprises an outer frame (21), a mounting frame (22), a closed door (23) and a hinge (24). One side end of the outer frame (21) is hollowed out, and an adjustment slot is provided at the lower end of the outer frame (21). The outer frame (21) is installed in the air outlet, the mounting frame (22) is installed on the outer frame (21), the closed door (23) is arranged in the outer frame (21), and the closed door (23) is arranged at one end of the mounting frame (22). The hinge (24) connects the mounting frame (22) and the closed door (23).

2. The automatic damper for regulating sand storage pressure according to claim 1 is characterized by: The control assembly (3) comprises a rotating member (35), a connecting rod (36) and a fixing member (37), wherein the fixing member (37) is mounted on the closed door (23), the connecting rod (36) is mounted on the fixing member (37), and the rotating member (35) is rotatably arranged on the connecting rod (36).

3. The automatic damper for regulating sand storage pressure according to claim 2 is characterized in that: The control assembly (3) further comprises a lifting member (33) and a telescopic member (34), wherein the telescopic member (34) is mounted on the rotating member (35), and the lifting member (33) is mounted on the telescopic member (34).

4. The automatic damper for regulating sand storage pressure according to claim 3 is characterized by: A limiting groove is provided on an inner wall of one side of the outer frame (21), and the lifting member (33) is slidably arranged in the limiting groove.

5. The automatic damper for regulating sand storage pressure according to claim 4 is characterized in that: A motor (31) is installed in the limiting groove, and a screw rod (32) is installed at the output end of the motor (31).

6. The automatic damper for regulating sand storage pressure according to claim 5 is characterized by: The lifting member (33) is threadedly arranged on the screw rod (32).

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