A sand and dust test box with automatic and uniform feeding

Abstract

The present invention relates to the technical field of test equipment, and specifically to a sand and dust test box with automatic and uniform feeding, including a cabinet and a sand filter box, wherein a test area for placing an object to be tested is installed in the cabinet, and the sand filter box is installed in the cabinet, which is communicated with the test area through a pipeline, and a storage tray is installed in the sand filter box, and the sand and dust enter the storage tray from one side of the sand filter box. The present invention sets a storage tray, and when the sand and dust gather on the storage tray, a rotatable sand pusher on the storage tray is used to push the sand and dust into a sand filter area with sand filter holes of different diameters in turn, and the sieve rod is reciprocated in the sand filter area to flatten the sand and dust, and the sand and dust that meets the particle size requirements is filtered out through the sand filter hole in time, and the bristles on the sieve rod are inserted into the sand filter hole reciprocatingly, and the blockage is cleared in time to avoid the blockage of the material discharge, so as to evenly screen the sand material and replenish it in different storage areas.

Description

Technical Field

[0001] The invention relates to the technical field of test equipment, and in particular to a sand and dust test box with automatic and uniform material feeding. Background Art

[0002] The sand and dust test chamber uses a fan to push a certain concentration of sand and dust at a certain flow rate across the surface of the test sample, so as to evaluate the ability of these test samples (equipment) to resist the penetration effect of dust particles when exposed to dry sand or dusty atmosphere, the ability to resist the abrasion or blocking effect of gravel, and the ability to store and operate.

[0003] At present, the test chamber usually uses sand and dust for ordinary large-particle filtration treatment to filter out large stones and other debris, and in actual test situations, only the wind speed of the sand and dust is controlled to obtain the test structure. However, the test samples have different defense effects on sand and dust of different particle sizes due to different materials. It is necessary to select sand and dust of different particle sizes as the test standard to obtain a more accurate test structure range. However, in the process of sand and dust feeding, it is difficult to evenly screen sand materials of different sizes in time to obtain sand and dust of similar particle sizes for supplementation.

[0004] Therefore, a sand and dust test box with automatic and uniform feeding is proposed to solve the above-mentioned problems. Summary of the invention

[0005] Technical issues solved

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a sand and dust test box with automatic and uniform feeding, which can effectively solve the problem in the prior art that it is difficult to uniformly feed sand and dust of similar particle sizes.

[0007] Technical Solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] The present invention provides a sand and dust test box with automatic and uniform feeding, comprising a cabinet and a sand filter box, wherein a test area for placing an object to be tested is installed in the cabinet, and the sand filter box is installed in the cabinet and communicated with the test area through a pipeline, and a material storage tray is installed in the sand filter box, and sand and dust enter the material storage tray from one side of the sand filter box, and at least two sand filter areas are arranged on the disk surface of the material storage tray, and each sand filter area is respectively provided with a sand filter hole, and the diameter of the sand filter hole in each sand filter area is different, and sand and dust of different particle sizes can be filtered out through the sand filter holes of different diameters;

[0010] Among them, a rotatable material screen is installed on the material storage tray, and the material screen can push the sand and dust on the material storage tray to different sand filtering areas for filtering, so that the particle size of the sand and dust entering the test area remains consistent.

[0011] Furthermore, the material storage tray includes a material discharge area, which is opposite to one side of the feed port of the sand filter box, wherein the sand filter area is distributed in a circle with the middle of the material storage tray as the center, and the sand filter holes in different sand filter areas have larger diameters along the rotation direction of the material screen.

[0012] Furthermore, the material screen includes a sand pushing rod and a screen rod. The sand pushing rod has a V-shaped structure, and its lower end is in contact with the surface of the storage tray, so that the sand and dust in the unloading area can be pushed into the sand filtering area. The screen rod can rotate along the outer edge of the storage tray, and one end of the screen rod facing the storage tray can make friction movements on the surface of the storage tray to push the sand stuck in the sand filtering holes out of the sand filtering holes, wherein the moving path of the screen rod covers the entire sand filtering hole arrangement area.

[0013] Furthermore, the sieve rod is of U-shaped structure, inserted along the circumferential direction of the storage tray and moves in a circle with the center of the storage tray as the center, and the two sides of its concave surface are respectively in contact with the upper and lower end surfaces of the storage tray.

[0014] Furthermore, a cluster of bristles is installed at one end of the screen rod facing the material storage tray, and the bristles can be inserted into the sand filter holes when passing through the sand filter holes.

[0015] Furthermore, a roller is installed on the sieve rod at the outer edge of the storage tray, and the roller can roll at the outer edge of the storage tray when the sieve rod moves in a circular motion.

[0016] Furthermore, the material screen also includes a driving rod, which is rotatably installed in the middle part of the material screen and passes through the sand pushing rod and the screen rod in sequence, and can perform guiding movements along the central axis of the material screen, wherein a clamping shaft is provided on the outer side of the driving rod, and the sand pushing rod and the screen rod are respectively provided with limiting grooves for the clamping shaft to engage with.

[0017] Furthermore, a torsion spring is installed at the connection between the sand pushing rod or the screen rod and the storage tray.

[0018] Furthermore, the material storage tray also includes a grille, which is formed by connecting a number of guide arms, one end of each guide arm is connected to the inner wall of the grille, adjacent guide arms form an enclosed space, and are respectively set up above the sand filtering area, wherein the lower end of each guide arm is an arc surface, and the arc surface is facing opposite to the rotation direction of the material screen.

[0019] Beneficial Effects

[0020] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0021] The present invention provides a material storage tray. When sand and dust gather on the material storage tray, a rotatable sand pushing rod on the material storage tray is used to push the sand and dust into a sand filtering area with sand filtering holes of different diameters in turn, and the screen rod is reciprocated in the sand filtering area to flatten the sand and dust, and the sand and dust meeting the particle size requirements are filtered out through the sand filtering holes in time. In addition, the bristles on the screen rod are reciprocally inserted into the sand filtering holes to clear the blockage in time and avoid blockage of the material discharge, so that the sand material can be evenly screened and replenished into different material storage areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure in an embodiment of the present invention;

[0024] Figure 2 It is a schematic diagram of the side structure of the sand filter box in an embodiment of the present invention;

[0025] Figure 3 This is a bottom view of the structure of the sand filter box in an embodiment of the present invention;

[0026] Figure 4 It is a bottom view schematic diagram of the decomposed structure of the sand filter box in an embodiment of the present invention;

[0027] Figure 5 It is a schematic diagram of the decomposition structure of the sand filter box in an embodiment of the present invention;

[0028] Figure 6 It is a schematic diagram of the exploded structure of the material screen in the embodiment of the present invention;

[0029] Figure 7 In the embodiment of the present invention Figure 6 A schematic diagram of the structure at A;

[0030] Figure 8 It is a schematic diagram of the cross-sectional structure of the material screen in the embodiment of the present invention;

[0031] Fig. 9 Schematic diagram of the motion structure of the material screen in the embodiment of the present invention;

[0032] Fig.10 Schematic diagram of the arc surface structure of the sand pushing rod in the embodiment of the present invention.

[0033] The numbers in the figure represent: 1. cabinet; 11. test area; 2. sand filter box; 3. storage tray; 31. sand filter hole; 32. material screen; 321. sand push rod; 322. screen rod; 323. bristle; 324. roller; 325. drive rod; 326. clamping shaft; 327. torsion spring; 328. limit block; 329. limit hole; 33. grille; 331. guide arm; 34. unloading area. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0035] The present invention will be further described below in conjunction with the embodiments.

[0036] Example:

[0037] Reference Figure 1-10 A sand and dust test box with automatic and uniform feeding includes a cabinet 1 and a sand filter box 2. A test area 11 for placing an object to be tested is installed in the cabinet 1. At the same time, a plurality of sand outlet air ducts are arranged in the cabinet 1. The orientation of the air duct is set in combination with the actual test environment. When the device is started, sand and dust will be sprayed out from the air duct and sprayed onto the object to be tested in the test area 11, forming a realistic sand and dust environment.

[0038] The sand filter box 2 is installed in the cabinet 1, and in this example is installed below the cabinet 1. It is connected to the test area 11 through a pipeline. Valves and pumping equipment are installed in the pipeline. This is a well-known technology and will not be described in detail in this example.

[0039] The sand filter box 2 is provided with a sand entry area, a sand screening area and a sand storage area from top to bottom. The sand and dust enter the sand screening area through the sand entry area. After being screened in the sand screening area, the screened sand and dust fall into the sand storage area. The sand storage area is provided with placement areas for placing sand and dust of different particle sizes. The sand screened in the sand screening area will enter different placement areas respectively, and the placement areas in the sand storage area are respectively connected with a pipe, which can be communicated with the pipe leading to the test area 11, so that the particle size of the sand and dust sprayed into the test area 11 can be more uniform.

[0040] Specifically, the sand filter box 2 is cylindrical as a whole, and a circular material storage tray 3 is installed in the sand filter box 2. Sand and dust enter the sand entry area of ​​the sand filter box 2 and gather on the surface of the material storage tray 3. A grid 33 formed by three guide arms 331 is installed on the surface of the material storage tray 3. One end of each guide arm 331 is connected to the inner wall of the grid 3. Adjacent guide arms 331 form an enclosed space and are respectively set up above the sand filter area. The material storage tray 3 is provided with two sand filter areas and a discharge area 34 for sand accumulation on the surface of the material storage tray 3. The discharge area 34 is opposite to one side of the feed port of the sand filter box 2, wherein the sand filter areas are distributed in a circle with the middle position of the material storage tray 3 as the center, and the sand filter holes 31 in different sand filter areas increase in diameter along the rotation direction of the material screen 32.

[0041] A sand filter hole 31 is respectively opened on the material storage tray 3 corresponding to each sand filter area, and the diameter of the sand filter hole 31 in each sand filter area is different. Sand dust of different particle sizes can be filtered out through the sand filter holes 31 of different diameters.

[0042] When a certain amount of sand and dust gathers on the lower material area 34, the sand and dust are pushed to move in the direction of the gradually increasing diameter of the sand filter holes 31. When passing through two sand filter holes 31 with different diameters, the diameter through which the sand and dust can pass becomes larger in turn, so that sand and dust of different sizes are screened in the sand filtering area in turn and fall into the sand storage area located below the sand screening area.

[0043] A rotatable material screen 32 is installed on the material storage tray 3, and the material screen 32 consists of two parts: a sand pushing rod 321 and a screen rod 322, which can rotate relative to each other. A rotating groove for rotating the screen rod 322 is installed in the sand pushing rod 321, and a torsion spring 327 is installed in the rotating groove. When the sand pushing rod 321 needs to be moved again after the screen rod 322 makes a reciprocating motion, the driving rod 325 is connected to the sand pushing rod 321. When driving the sand pushing rod 321 to move, the torsion spring 327 is used to make the screen rod 322 move synchronously.

[0044] The sieve rod 322 is provided with a clamping shaft 326, and the sand pushing rod 321 and the sieve rod 322 are respectively provided with limiting grooves for the clamping shaft 326 to engage. When the clamping shaft 326 on the driving rod 325 is stuck in the limiting groove in the sand pushing rod 321, the rotation of the driving rod 325 will drive the sand pushing rod 321 to rotate. Conversely, when the clamping shaft 326 on the driving rod 325 is stuck in the limiting groove in the sieve rod 322, it will be separated from the limiting groove in the sand pushing rod 321, so that the sand pushing rod 321 stops rotating, and the sieve rod 322 rotates periodically.

[0045] The screen rod 322 in this example rotates in a reciprocating motion with an arc-shaped motion trajectory, which can "flatten" the sand material pushed by the sand pushing rod 321 until the sand dust meeting the particle size requirements passes through the sand filter hole 31 and falls into the sand storage area below.

[0046] At the same time, the driving rod 325 can perform rotation and axial guiding activities, and its motion structure is a prior art, which can complete the multi-motion trajectory driving of the driving rod 325, and will not be elaborated in this example.

[0047] The material screen 32 is used to push the sand and dust on the material storage tray 3 to different sand filtering areas for filtering and screening, so that the particle size of the sand and dust entering the test area 11 remains consistent.

[0048] The lower end of each guide arm 331 is an arc surface, and the arc surface faces the opposite direction of the rotation direction of the material screen 32. The upper end of the corresponding sand pushing rod 321 is also an arc surface, and faces the opposite direction of the arc surface on the guide arm 331. The two do not intersect with each other. When the sand pushing rod 321 pushes the sand and dust to move to the next area, the "sand dunes" between the sand pushing rods 321 can be pressed and compacted.

[0049] The sand pushing rod 321 has a V-shaped structure, and its lower end is in contact with the surface of the storage tray 3, so that the sand and dust in the unloading area 34 can be pushed into the sand filtering area. The screen rod 322 can rotate along the outer edge of the storage tray 3, and its end facing the storage tray 3 can make friction movements on the surface of the storage tray 3, so as to push the sand stuck in the sand filtering hole 31 out of the sand filtering hole 31, wherein the moving path of the screen rod 322 covers the entire arrangement area of ​​the sand filtering hole 31.

[0050] The sieve rod 322 in this example has a U-shaped structure, which is inserted along the circumferential direction of the storage tray 3 and makes a circular motion with the center of the storage tray 3 as the center. The two sides of the concave surface are respectively in contact with the upper and lower end surfaces of the storage tray 3. The sieve rod 322 is provided with clusters of hard bristles 323 at one end facing the storage tray 3. The hard bristles 323 can be inserted into the sand filter holes 31 when passing through the sand filter holes 31. When the sieve rod 322 makes a circular motion, the hard bristles 323 will be inserted into the sand filter holes 31 as it moves, repeatedly squeezing and pressing the sand and dust blocked in the sand filter holes 31 to avoid blockage of the sand filter holes 31.

[0051] In addition, a roller 324 is installed on the outer edge of the sieve rod 322, which is in contact with the storage tray 3. The roller 324 can roll on the outer edge of the storage tray 3 when the sieve rod 322 makes a circular motion, thereby reducing the friction force when the sieve rod 322 rotates, and reducing the noise when the sieve rod 322 rotates to a certain extent.

[0052] At the same time, a limit block 328 is installed at the outer end of the screen rod 322, and an annular limit hole 329 is opened at the rotation intersection of the sand pushing rod 321 and the screen rod 322. The limit block 328 rotates in the limit hole 329, and the limit hole 329 can allow the limit block 328 to rotate. The path area is smaller than the area of ​​the sand filtering area. Therefore, when the screen rod 322 reciprocates, the sand and dust in the sand filtering area will not be "splashed" to other areas due to the rotation of the screen rod 322, and the sand and dust will only be reciprocated and screened in the sand filtering area until the entire screening process is completed.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sand and dust test box with automatic and uniform feeding, characterized in that: include: A cabinet body, wherein a test area for placing an object to be tested is installed in the cabinet body; A sand filter box is installed in the cabinet and communicated with the test area through a pipeline. A material storage tray is installed in the sand filter box. Sand and dust enter the material storage tray from one side of the sand filter box. At least two sand filter areas are arranged on the disk surface of the material storage tray. Sand filter holes are respectively opened on each sand filter area. The diameters of the sand filter holes in each sand filter area are different. Sand and dust of different particle sizes can be filtered out through sand filter holes of different diameters. Wherein, a rotatable material screen is installed on the material storage tray, and the material screen can push the sand and dust on the material storage tray to different sand filtering areas for filtering, so that the particle size of the sand and dust entering the test area remains consistent; The material screen comprises: The sand pushing rod is V-shaped, and its lower end is in contact with the surface of the material storage tray, so as to push the sand and dust in the material discharge area into the sand filtering area; A sieve rod, which can rotate along the outer edge of the material storage tray, and one end of the sieve rod facing the material storage tray can make friction movements on the surface of the material storage tray to push the sand stuck in the sand filter hole out of the sand filter hole; Wherein, the moving path of the screen rod covers the entire sand filter hole arrangement area; The material screen also includes: The driving rod is rotatably mounted in the middle of the material screen and passes through the sand pushing rod and the screen rod in sequence, and can be guided along the axis of the material screen: Among them, a clamping shaft is provided on the outer side of the driving rod, and the sand pushing rod and the screen rod are respectively provided with limiting grooves for the clamping shaft to engage; A torsion spring is installed at the connection between the sand pushing rod and the screen rod; A limit block is installed at the outer end of the screen rod, and an annular limit hole is opened at the rotation junction of the sand pushing rod and the screen rod. The limit block rotates in the limit hole, and the limit hole can allow the path area of ​​the limit block to rotate smaller than the area of ​​the sand filtering area.

2. The sand and dust test box with automatic and uniform feeding according to claim 1 is characterized in that: The material storage tray includes a material discharge area, and the material discharge area is directly opposite to one side of the material feed port of the filter sand box; The sand filtering areas are distributed in a circle with the middle of the material storage tray as the center, and the sand filtering holes in different sand filtering areas have larger diameters along the rotation direction of the material screen.

3. The sand and dust test box with automatic and uniform feeding according to claim 1 is characterized in that: The sieve rod is in a U-shaped structure, inserted along the circumferential direction of the storage tray and moves in a circle with the center of the storage tray as the center, and the two sides of the concave surface are respectively in contact with the upper and lower end surfaces of the storage tray.

4. A sand and dust test box with automatic uniform feeding according to claim 1 or 3, characterized in that: The end of the screen rod facing the material storage tray is provided with clusters of bristles, and the bristles can be inserted into the sand filter holes when passing through the sand filter holes.

5. The sand and dust test box with automatic and uniform feeding according to claim 3 is characterized in that: A roller is installed on the outer edge of the material storage tray in close contact with the sieve rod, and the roller can roll on the outer edge of the material storage tray when the sieve rod makes a circular motion.

6. A sand and dust test box with automatic and uniform feeding according to claim 1 or 5, characterized in that: The storage tray also includes: The grid is formed by connecting a plurality of guide arms, one end of each guide arm is connected to the inner wall of the grid, and adjacent guide arms form an enclosed space and are respectively set above the sand filtering area; The lower end of each guide arm is in the form of an arc surface, and the direction of the arc surface is opposite to the rotation direction of the material screen.

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