Automatic sand adding mechanism

Abstract

The utility model discloses an automatic sand adding mechanism which comprises a sand storage tank, the sand storage tank is provided with a sand inlet and a sand outlet, the sand inlet is provided with a sand adding valve, the sand adding valve comprises a valve body connected with the sand inlet, the valve body is provided with a first port and a second port, the first port is connected with the sand inlet, and the second port is connected with the sand outlet. A deformation sealing piece used for sealing the second port is arranged in the valve body, the deformation sealing piece is connected with a balancing weight, the sand adding valve is provided with an air inlet nozzle, the air inlet nozzle is located below the balancing weight, and the air outlet end of the air inlet nozzle faces the balancing weight. The balancing weight is configured to be used for driving the deformation sealing piece to deform downwards, so that the second port is in an open state and communicates with the interior of the valve body; the air inlet nozzle is configured in the mode that when air enters the air inlet nozzle, compressed air output by the air outlet end of the air inlet nozzle drives the balancing weight and the deformation sealing piece to be attached to the valve body upwards so that the second port can be closed.

Description

Technical Field

[0001] The utility model relates to the technical field of sand blasting and sand storage equipment, in particular to an automatic sand adding mechanism. Background Art

[0002] Prior art, such as the Chinese invention patent application document with publication number CN 105171617A, discloses a sandblasting device for glass sandblasting, comprising a sand stirring mechanism, a sand blasting mechanism, a collecting mechanism and a conveying mechanism. The sand blasting mechanism is located between the sand stirring mechanism and the collecting mechanism, and the conveying mechanism is located inside the sand blasting mechanism. The sand stirring mechanism comprises a feeding hopper, a storage chamber and a stirring shaft. A closing valve is connected between the feeding hopper and the storage chamber. A stirring shaft is provided in the storage chamber. The sandblasting mechanism comprises a sandblasting chamber, a spray gun, a material inlet and a material outlet. The conveying mechanism comprises a first conveying mechanism and a second conveying mechanism. The turning device comprises a rotating disk, a fixed box and a clamping plate. The collecting mechanism comprises a collecting hopper, a sand pump, a collecting chamber and a sand filter tray. The collecting hopper and the sand pump are located in the collecting chamber. A sand filter tray is provided at the top of the collecting chamber, and the sand filter tray is connected to the sandblasting chamber.

[0003] Based on the above, existing technologies use a closed valve to connect the hopper and the storage chamber. During sandblasting, the closed valve is closed. When the hopper is feeding sand into the storage chamber, the closed valve is open. This closed valve structure utilizes a conventional pneumatic or electric valve body. The use of such conventional valve bodies presents technical challenges, including the need for a separate air or power source, high procurement costs, and the need for separate control of the valve opening and closing, requiring further improvement. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems in the prior art. To this end, the utility model proposes an automatic sand adding mechanism with automatic opening and closing of the second port.

[0005] An automatic sand-feeding mechanism designed for this purpose includes a sand storage tank, the sand storage tank is provided with a sand inlet and a sand outlet, the sand inlet is provided with a sand-feeding valve, the sand-feeding valve includes a valve body connected to the sand inlet, the valve body is provided with a first port and a second port, the first port is connected to the sand inlet, a deformable sealing sheet for sealing the second port is provided in the valve body, the deformable sealing sheet is connected to a counterweight block, and the sand-feeding valve is provided with an air inlet nozzle, the air inlet nozzle is located below the counterweight block, and an air outlet end is arranged toward the counterweight block;

[0006] The counterweight block is configured to: drive the deformable sealing sheet to deform downward, so that the second port is in an open state and communicates with the interior of the valve body;

[0007] The air inlet nozzle is configured such that when the air inlet nozzle is inhaling air, the compressed air outputted from the air outlet end drives the counterweight block and the deformable sealing sheet upward to fit the valve body, so as to close the second port.

[0008] Preferably, the valve body is connected to a fixing member, and the fixing member is provided with a deformable connecting member connected to the deformable sealing sheet.

[0009] Preferably, the valve body is provided with an annular fixing groove, and the fixing member is fixedly disposed in the annular fixing groove.

[0010] Preferably, the valve body includes a first connecting member, a second connecting member and a third connecting member connected in sequence from bottom to top, the first port is arranged on the first connecting member, the second port is arranged on the third connecting member, and a seal is formed when the upper surface of the deformable sealing sheet is in contact with the lower surface of the third connecting member.

[0011] Preferably, the annular fixing groove is provided between the second connecting member and the third connecting member.

[0012] Preferably, the first connecting member, the second connecting member and the third connecting member are connected in sequence using a plurality of bolts;

[0013] The fixing piece is provided with a fixing hole, and the bolt is passed through the fixing hole.

[0014] Preferably, the sand storage tank is provided with a pressure relief valve.

[0015] Compared with the prior art, the present invention adopts the combination of a deformable sealing plate and a counterweight. In a natural state, the counterweight and the deformable sealing plate are deformed and move downward under the action of gravity, so that the second port is in an open state. In this state, the sand in the sand adding tank can enter the sand storage tank through the second port, the valve body and the sand adding port. When sandblasting, external compressed air is input into the valve body from the air nozzle. Under the action of the compressed air, the counterweight and the deformable sealing plate move upward and fit into the valve body, so that the second port is closed, that is, the seal is completed. The present invention uses the compressed air originally required for sandblasting to drive the deformable sealing plate to close the second port, thereby solving the problems of high control cost and high valve procurement cost brought about by the pneumatic valves or electric valves that need to be controlled separately in the prior art. The present invention has the effect of simple control structure and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the cross-sectional structural diagrams of the present utility model;

[0017] Figure 2 This is the second schematic diagram of the cross-sectional structure of the present utility model;

[0018] Figure 3 for Figure 2 A in the middle is an enlarged structural diagram;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 5 Schematic diagram of the three-dimensional structure of the deformable sealing sheet. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] See also Figure 1-Figure 5 , an automatic sand adding mechanism, comprising a sand storage tank 10, the sand storage tank 10 is provided with a sand inlet 110 and a sand outlet 120, the sand inlet 110 is provided with a sand adding valve 20, the sand adding valve 20 comprises a valve body 200 connected to the sand inlet 110, the valve body 200 is provided with a first port 210 and a second port 220, the first port 210 is connected to the sand inlet 110, a deformable sealing piece 230 for sealing the second port 220 is provided in the valve body 200, the deformable sealing piece 230 is connected to a counterweight block 240, the sand adding valve 20 is provided with an air inlet nozzle 30, the air inlet nozzle 30 is located below the counterweight block 240 and the air outlet end is arranged toward the counterweight block 240;

[0023] The second port 220 is connected to a sand adding tank 40;

[0024] The counterweight block 240 is configured to drive the deformable sealing sheet 230 to deform downward, so that the second port 220 is in an open state and communicates with the interior of the valve body 200;

[0025] The air inlet nozzle 30 is configured such that when the air inlet nozzle 30 is inhaling, the compressed air outputted from the air outlet end thereof drives the counterweight 240 and the deformable sealing sheet 230 upward to fit the valve body 200 , thereby closing the second port 220 .

[0026] Based on the above embodiment, the deformable sealing sheet and the counterweight block are combined. In the natural state, the counterweight block and the deformable sealing sheet are deformed and move downward under the action of gravity, so that the second port is in an open state. In this state, the sand in the sand adding tank can enter the sand storage tank through the second port, the valve body and the sand adding port.

[0027] During sandblasting in this embodiment, external compressed air is input into the valve body from the air nozzle. Under the action of the compressed air, the counterweight block and the deformable sealing sheet move upward and fit into the valve body, so that the second port is closed, thus completing the sealing.

[0028] The utility model utilizes the compressed air originally required for sandblasting to drive the deformable sealing plate to seal the second port, thereby solving the problems of high control costs and high valve procurement costs caused by the existing pneumatic valves or electric valves that require separate control. The utility model has the effect of simple control structure and low manufacturing cost.

[0029] See also Figure 3 and Figure 5 The valve body 200 is connected to a fixing member 250, and the fixing member 250 is provided with a deformable connecting member 260 connected to the deformable sealing piece 230. The fixing member 250 is fixed. With the weight of the counterweight block 240 or the drive of compressed air, the deformable sealing piece 230 and the deformable connecting member 260 are deformed to swing up and down relative to the fixing member 250 to open or close the second port 220.

[0030] Furthermore, the diameter of the counterweight block 240 is greater than the diameter of the second port 220. This design can achieve that when compressed air drives the counterweight block 230 and the deformable sealing plate 230 to move upward, the counterweight block 240 can drive the deformable sealing plate 230 to fit tightly against the inner wall of the valve body 200, thereby preventing the deformable sealing plate 230 from deforming upward and entering the second port 220.

[0031] See also Figures 1 to 3 The valve body 200 is provided with an annular fixing groove 204 , and the fixing member 250 is fixedly disposed in the annular fixing groove 204 .

[0032] See also Figures 1 to 3 The valve body 200 includes a first connecting member 201, a second connecting member 202 and a third connecting member 203 connected in sequence from bottom to top. The first port 210 is set on the first connecting member 201, and the second port 220 is set on the third connecting member 203. The upper surface of the deformable sealing sheet 230 forms a seal when it is in contact with the lower surface of the third connecting member 203.

[0033] See also Figures 1 to 3 The annular fixing groove 204 is provided between the second connecting member 202 and the third connecting member 203 .

[0034] See also Figure 3 The first connecting member 201, the second connecting member 202 and the third connecting member 203 are connected in sequence using multiple bolts 205.

[0035] See also Figure 3 and Figure 5 The fixing member 250 is provided with a fixing hole 251 , and the bolt 205 is passed through the fixing hole 251 .

[0036] See also Figure 3and Figure 5 The upper surface of the deformable sealing piece 230 is provided with a sealing protrusion 231. The provision of the sealing protrusion 231 can strengthen the sealing between the deformable sealing piece 230 and the lower surface of the third connecting member 203, thereby effectively improving the sealing performance.

[0037] See also Figure 4 The sand adding tank 40 is located above the sand storage tank 10 , and the sand adding tank 40 is connected to the second port 220 via a pipe 50 .

[0038] See also Figure 4 The sand storage tank 10 is provided with a pressure relief valve 60 and a safety valve 70 respectively.

[0039] The function of the safety valve 70 is to open and release the pressure when the internal pressure of the sand storage tank 10 exceeds the threshold value of the safety valve 70, thereby ensuring safety.

[0040] The function of the pressure relief valve 60 is to open when sand is being added, connecting the interior of the sand storage tank 10 to the outside. In this state, the air nozzle 30 is closed. The deformable seal and the counterweight block cooperate. Under the action of gravity, the counterweight block and the deformable seal plate deform and move downward, opening the second port. In this state, the sand in the sand tank can enter the sand storage tank through the second port, the valve body, and the sand addition port.

[0041] During sandblasting, the pressure relief valve 60 is closed and the air nozzle 30 is opened. The compressed air input from the air nozzle 30 drives the counterweight block 240 and the deformable sealing plate 230 upward to fit with the valve body 200 to form a seal. The input compressed air drives the sand to be output from the sand outlet 120 for use.

[0042] See also Figure 1 and Figure 2 The sand storage tank 10 is provided with a base frame 100.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0044] 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. An automatic sand adding mechanism, comprising a sand storage tank (10), wherein the sand storage tank (10) is provided with a sand inlet (110) and a sand outlet (120), wherein the sand inlet (110) is provided with a sand adding valve (20), characterized in that: The sand adding valve (20) comprises a valve body (200) connected to the sand inlet (110), the valve body (200) being provided with a first port (210) and a second port (220), the first port (210) being connected to the sand inlet (110), a deformable sealing sheet (230) for sealing the second port (220) being provided in the valve body (200), the deformable sealing sheet (230) being connected to a counterweight (240), and the sand adding valve (20) being provided with an air inlet nozzle (30), the air inlet nozzle (30) being located below the counterweight (240) and the air outlet end being arranged toward the counterweight (240); The counterweight (240) is configured to drive the deformable sealing sheet (230) to deform downward, so that the second port (220) is in an open state and communicates with the interior of the valve body (200); The air inlet nozzle (30) is configured such that when the air inlet nozzle (30) is inletting air, the compressed air outputted from the air outlet end thereof drives the counterweight (240) and the deformable sealing sheet (230) upward to fit the valve body (200) so as to close the second port (220).

2. The automatic sand adding mechanism according to claim 1, characterized in that: The valve body (200) is connected to a fixing member (250), and the fixing member (250) is provided with a deformable connecting member (260) connected to the deformable sealing sheet (230).

3. The automatic sand adding mechanism according to claim 2, characterized in that: The valve body (200) is provided with an annular fixing groove (204), and the fixing member (250) is fixedly arranged in the annular fixing groove (204).

4. The automatic sand adding mechanism according to claim 3, characterized in that: The valve body (200) comprises a first connecting member (201), a second connecting member (202) and a third connecting member (203) connected in sequence from bottom to top, the first port (210) is arranged on the first connecting member (201), the second port (220) is arranged on the third connecting member (203), and a seal is formed when the upper surface of the deformable sealing sheet (230) is in contact with the lower surface of the third connecting member (203).

5. The automatic sand adding mechanism according to claim 4, characterized in that: The annular fixing groove (204) is provided between the second connecting member (202) and the third connecting member (203).

6. The automatic sand adding mechanism according to claim 4, characterized in that: The first connecting member (201), the second connecting member (202), and the third connecting member (203) are sequentially connected using a plurality of bolts (205); The fixing member (250) is provided with a fixing hole (251), and the bolt (205) is passed through the fixing hole (251).

7. The automatic sand adding mechanism according to claim 1, characterized in that: The sand storage tank (10) is provided with a pressure relief valve (60).

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