Dustpan

Abstract

The utility model relates to the field of coal, and discloses a dustpan which comprises a dustpan body which comprises a dustpan left support and a dustpan right support. The adjusting mechanism comprises an adjusting rod, the adjusting rod is connected to the dustpan left support and the dustpan right support, and the adjusting mechanism can be adjusted to enable the dustpan left support and the dustpan right support to relatively move in the length direction of the adjusting rod so as to change the opening size of the dustpan body; the cleaning mechanism is arranged on the adjusting rod and can clean particulate matter attached to the adjusting rod in the relative movement process of the dustpan left support and the dustpan right support. By means of the technical scheme, the dustpan can prevent particulate matter from accumulating on the adjusting rod to hinder relative movement of the dustpan left support and the dustpan right support in the length direction of the adjusting rod, so that the adjusting mechanism is not blocked when the opening size of the dustpan is adjusted, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the coal industry, and specifically to a winnowing basket. Background Technology

[0002] In coal sample preparation, winnowing baskets are frequently used as sampling shovels. The process of reducing coal samples from raw coal to 0.2mm analytical specimens involves numerous reduction operations. In the early stages of sample preparation, when the quantity and particle size of the coal sample are large, winnowing baskets with larger openings are used to reduce the number of feeding operations. In the later stages, when the quantity and particle size of the coal sample are small, winnowing baskets with smaller openings are used to improve processing speed. Therefore, it is necessary to use winnowing baskets with different opening sizes in combination during coal sample preparation to improve work efficiency.

[0003] Chinese utility model patent CN221859959U discloses an adjustable-opening coal sampling shovel. The shovel uses a rotating screw to slide two side plates of the shovel relative to or towards each other, thus adjusting the opening size. However, during use, coal accumulates on the screw and enters the gap between the screw and the side plates, causing the screw to jam and become unable to rotate, thus preventing adjustment of the shovel's opening size and affecting subsequent use. Utility Model Content

[0004] The purpose of this invention is to overcome the problem in the existing technology where, during use, coal accumulates on the screw and enters the gap between the screw and the side baffle, causing the screw to jam, unable to rotate, and unable to adjust the opening size of the winnowing basket, thus affecting subsequent use.

[0005] To achieve the above objectives, this utility model provides a winnowing basket, comprising:

[0006] The winnowing basket body, which includes the left and right branches of the winnowing basket;

[0007] An adjusting mechanism, comprising an adjusting rod connected to a left support and a right support of the winnowing basket, the adjusting mechanism being adjustable to allow the left and right supports of the winnowing basket to move relative to each other along the length of the adjusting rod to change the opening size of the winnowing basket body; and,

[0008] The cleaning mechanism is mounted on the adjusting rod and can clean the particles adhering to the adjusting rod during the relative movement of the left and right supports of the winnowing basket.

[0009] In some embodiments, the left support of the winnowing basket is placed in the right support of the winnowing basket along the inner edge of the right support. The adjusting rod includes an outer rod and an inner rod. The outer rod is connected to the top of the side plate of the right support of the winnowing basket by a first fixing member, and the inner rod is connected to the top of the side plate of the left support of the winnowing basket by a second fixing member. The end of the outer rod facing the left support of the winnowing basket is open and sleeved outside the inner rod, so that the left support of the winnowing basket and the right support of the winnowing basket can move relative to each other by changing the sleeve length of the outer rod outside the inner rod. The cleaning mechanism is installed at the open end of the outer rod and can clean the particles adhering to the inner rod during the relative movement of the left support of the winnowing basket and the right support of the winnowing basket.

[0010] In some embodiments, the outer rod is rotatably connected to the first fixing member, the inner rod is fixedly connected to the second fixing member, the inner rod is a screw rod, and the outer rod has a thread inside and is threadedly connected to the inner rod.

[0011] In some embodiments, one end of the inner rod connected to the outer rod is provided with an anti-detachment part with a diameter larger than that of the inner rod body, and the interior of the outer rod has a stepped part that matches the anti-detachment part, and a thread that matches the inner rod body is formed at the opening.

[0012] In some embodiments, the inner rod has a plane and a curved surface in the circumferential direction and extends along the length direction. The plane has a scale in the length direction and the curved surface has a thread in the length direction.

[0013] In some embodiments, the cleaning mechanism includes a brush sleeved outside an inner rod, the brush extending toward and abutting against the inner rod.

[0014] In some embodiments, the dustpan further includes a fixing mechanism disposed on the outer rod to mount the cleaning mechanism at the open end of the outer rod.

[0015] In some embodiments, the cleaning mechanism further includes a connecting ring, which is sleeved on the outside of the brush. The outer wall of the brush is provided with a plurality of protruding pins, which are connected to the inner wall of the connecting ring. The fixing mechanism includes a fixing block that is fixedly sleeved on the outside of the outer rod, and the connecting ring is connected to the fixing block through a fixing member.

[0016] In some embodiments, the connecting ring includes two semicircular rings, and the axially opposite surfaces of the two semicircular rings are respectively provided with protruding locking blocks and openings that cooperate with the locking blocks. The two semicircular rings are sleeved on the outside of the brush by the locking blocks.

[0017] In some embodiments, the fixing member includes a plurality of I-shaped connecting blocks and an annular slider. The two ends of the connecting blocks are respectively shaped to fit the fixing block and the connecting ring, so as to drive the brush to rotate synchronously during the rotation of the outer rod relative to the inner rod. The slider is slidably sleeved on the outside of the connecting block and connected to the connecting ring at its end.

[0018] In some embodiments, the slider has protrusions on its exterior.

[0019] Through the above technical solution, the adjusting mechanism causes the left and right supports of the winnowing basket to move relative to each other along the length of the adjusting rod, thereby changing the opening size of the winnowing basket body. A cleaning mechanism is installed on the adjusting rod to clean particles adhering to the adjusting rod during the relative movement of the left and right supports. This winnowing basket can prevent particles from accumulating on the adjusting rod and obstructing the relative movement of the left and right supports along the length of the adjusting rod, ensuring that the adjusting mechanism does not jam when adjusting the opening size of the winnowing basket and extending its service life. Attached Figure Description

[0020] Figure 1 This is an overall diagram of an embodiment of the present utility model;

[0021] Figure 2 This is a disclosure of the embodiments of this utility model. Figure 1 Enlarged view of section A;

[0022] Figure 3 This is a schematic diagram of the cleaning mechanism and fixing mechanism disclosed in the embodiments of this utility model;

[0023] Figure 4 This is a structural diagram of the recessed portion of the connecting ring disclosed in an embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the connecting block disclosed in an embodiment of the present utility model.

[0025] Explanation of reference numerals in the attached figures

[0026] 1. Left support of the winnowing basket; 2. Right support of the winnowing basket; 3. Adjustment mechanism; 301. First fixing component; 302. Outer rod; 303. Second fixing component; 304. Inner rod; 4. Cleaning mechanism; 401. Connecting ring; 402. Brush; 403. Pin; 404. Locking block; 5. Fixing mechanism; 501. Fixing block; 502. Connecting block; 503. Sliding block; 504. Insert rod; 505. Protrusion block. Detailed Implementation

[0027] In this invention, unless otherwise stated, directional terms such as "up," "down," "left," "right," "inner," and "outer" are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] To address the problem in existing technologies where coal accumulates on the screw and enters the gap between the screw and the side baffle during use, causing the screw to jam and preventing rotation, thus hindering the adjustment of the winnowing basket's opening size and affecting subsequent use, this utility model provides a winnowing basket, such as... Figure 1 As shown, the winnowing basket includes: a basket body, comprising a left support 1 and a right support 2; an adjustment mechanism 3, comprising an adjustment rod connected to the left support 1 and the right support 2, the adjustment mechanism 3 being adjustable to allow the left support 1 and the right support 2 to move relative to each other along the length of the adjustment rod to change the opening size of the basket body; and a cleaning mechanism 4, disposed on the adjustment rod, capable of cleaning particles adhering to the adjustment rod during the relative movement of the left support 1 and the right support 2. During use, particles adhere to the adjustment rod. When changing the opening size of the basket body, as the left support 1 and the right support 2 move along the length of the adjustment rod, the particles on the adjustment rod obstruct their movement, causing jamming. Over time, this prevents the left support 1 and the right support 2 from moving relative to each other, thus preventing adjustment of the basket opening size. Therefore, a cleaning mechanism is installed on the adjusting rod to remove particles adhering to the adjusting rod during the relative movement of the left support 1 and right support 2 of the winnowing basket. This makes the relative movement of the left support 1 and right support 2 of the winnowing basket smoother and increases their service life. This winnowing basket can be used in the coal industry as a sampling shovel for the reduction operation in coal sample preparation. By adjusting the opening size of the winnowing basket, it can clean coal adhering to the adjusting rod. It can also be used in other situations where the opening size of the winnowing basket needs to be changed to clean different types of particles adhering to the adjusting rod.

[0029] In some embodiments, as Figure 1 As shown, the left support 1 of the winnowing basket is placed in the right support 2 along its inner edge. The size of the winnowing basket opening is changed by the sliding of the left support 1 within the right support 2. The adjusting rod includes an outer rod 302 and an inner rod 304. The outer rod 302 is connected to the top of the side plate of the right support 2 via a first fixing member 301, and the inner rod 304 is connected to the top of the side plate of the left support 1 via a second fixing member 303. The end of the outer rod 302 facing the left support 1 is open and sleeved outside the inner rod 304, allowing the left support 1 and the right support 2 to move relative to each other by changing the sleeve length of the outer rod 302 outside the inner rod 304. In use, changing the sleeve length of the outer rod 302 outside the inner rod 304 changes the overall length of the adjusting rod, thus changing the distance between the sides of the left support 1 and the right support 2. The left support 1 slides within the right support 2, changing the size of the winnowing basket opening. Figure 3As shown, the cleaning mechanism 4 is installed at the open end of the outer rod 302. When the inner rod 304 enters the outer rod 302, it cleans away the particles adhering to the inner rod 304, preventing these particles from entering the gap between the outer rod 302 and the inner rod 304 and causing jamming when changing the sleeve length of the outer rod 302 outside the inner rod 304. This makes adjusting the opening size of the winnowing basket smoother and extends its service life. Alternatively, the inner rod 304 and the outer rod 302 can be respectively fixed on the back plates of the left support 1 and the right support 2 of the winnowing basket via the second fixing member 303 and the first fixing member 301.

[0030] In some embodiments, as Figure 1 and Figure 3 As shown, the outer rod 302 is rotatably connected to the first fixing member 301, and the inner rod 304 is fixedly connected to the second fixing member 303. The inner rod 304 is a screw, and the outer rod 302 has internal threads that are threadedly connected to the inner rod 304. Rotating the outer rod 302 clockwise or counterclockwise changes the length of the outer rod 302 that is sleeved outside the inner rod 304. The first fixing member 301 can be a bearing of existing technology, and the end of the outer rod 302 rotates in the bearing. The second fixing member 303 can be a collar, which is fixedly sleeved outside the inner rod 304. Alternatively, the outer rod 302 and the inner rod 304 can be configured as sliding rods, with the outer rod 302 sleeved outside the inner rod 304. The outer rod 302 is fixedly connected to the first fixing member 301, and the inner rod 304 is fixedly connected to the second fixing member 303. The length of the outer rod 302 sleeved outside the inner rod 304 can be manually changed to allow the left support 1 and the right support 2 of the winnowing basket to slide relative to each other, thereby changing the opening size of the winnowing basket.

[0031] In some embodiments, as Figure 3 As shown, the end of the inner rod 304 connected to the outer rod 302 is provided with an anti-detachment part 3041 with a diameter larger than that of the inner rod 304, to prevent the inner rod 304 from coming out of the outer rod 302. The outer rod 302 has a stepped portion inside that matches the anti-detachment part 3041. Inside the stepped portion, the inner diameter of the outer rod 304 matches the anti-detachment part 3041; outside the stepped portion, i.e., at the opening of the outer rod 302, a thread matching the inner rod 304 is formed. When in use, the outer rod 302 rotates, and the threads on the inner rod 304 engage with the threads at the opening of the outer rod 302, increasing the length of the outer rod 302 outside the inner rod 304. The anti-detachment part 3041 moves inward from the outer rod 302. When the length of the outer rod 302 outside the inner rod 304 decreases, the anti-detachment part 3041 moves outward from the outer rod 302. When the anti-detachment part 3041 moves to the stepped part, its diameter is larger than the diameter at the opening of the outer rod 302, so it cannot move outward any further, preventing the inner rod 304 from coming out of the outer rod 304. At this point, the adjusting rod is in its longest state, which is also the state with the largest opening size of the winnowing basket.

[0032] In some embodiments, as Figure 1 and Figure 2 As shown, the inner rod 304 has a flat surface and a curved surface in its circumferential direction, extending along its length. The flat surface has graduations along its length to indicate the size of the winnowing basket opening, and the curved surface has threads along its length, allowing the inner rod 304 to be threadedly connected to the outer rod 302. The threads on the curved surface ensure the threaded connection between the inner rod 304 and the outer rod 302, while the graduations on the flat surface indicate the size of the winnowing basket opening. Furthermore, the inner rod 304 is fixed and does not rotate. Setting the graduations on the inner rod 304 ensures that the graduations remain in the same position during adjustment, making it convenient for the user to read the graduations. Alternatively, the graduations can be set on the base plate or back plate of the right support 2 of the winnowing basket.

[0033] In some embodiments, as Figure 3 As shown, the cleaning mechanism 4 includes a brush 402, which is sleeved on the inner rod 304. The brush 402 extends toward the inner rod 304 and abuts against the inner rod 304, and can clean off the particles adhering to the inner rod 304.

[0034] In some embodiments, as Figure 2 and Figure 3 As shown, the winnowing basket also includes a fixing mechanism 5, which is mounted on the outer rod 302 to install the cleaning mechanism 4 at the open end of the outer rod 302. When the outer rod 302 rotates, the fixing mechanism 5 causes the cleaning mechanism 4 to rotate synchronously with the outer rod 302, thereby cleaning the particles adhering to the inner rod 304 before it enters the outer rod 302. This prevents the particles from entering the outer rod 302, making the adjustment rod length change more smoothly and extending its service life.

[0035] In some embodiments, such as 2 and Figure 3 As shown, the cleaning mechanism 4 also includes a connecting ring 401, which is sleeved on the outside of the brush 402. The outer wall of the brush 402 is provided with a plurality of protruding pins 403, which are connected to the inner wall of the connecting ring 401 through the pins 403. The fixing mechanism 5 includes a fixing block 501 that is fixedly sleeved on the outside of the outer rod 302. The connecting ring 401 is connected to the fixing block 501 through a fixing member. When the outer rod 302 rotates, the fixing block 501 rotates synchronously, thereby making the cleaning mechanism 4 rotate synchronously with the outer rod 302.

[0036] In some embodiments, as Figure 3 , Figure 4 and Figure 5As shown, the fixing component includes multiple I-shaped connecting blocks 502 and an annular slider 503. The two ends of the connecting blocks 502 respectively mate with the shapes of the fixing block 501 and the connecting ring 401, so as to drive the brush 402 to rotate synchronously during the rotation of the outer rod 302 relative to the inner rod 304. The connecting blocks 502 have an I-shaped structure, and the connecting ring 401 and the fixing block 501 have recesses at the connection points that match the shape of the connecting blocks 502. Figure 4 As shown, Figure 4 This is a schematic diagram of the recessed portion of the connecting ring 401, i.e. Figure 3 The schematic diagram shows the connecting ring 401 to the left of the dotted line. The connecting ring 401 has a recess that matches the shape of the upper half of the I-shaped connecting block 502. The fixing block 501, at its connection with the connecting ring 401, has a recess symmetrical to the connecting ring 401, matching the shape of the lower half of the I-shaped connecting block 502. The connecting block 502, conforming to the annular shape of the fixing block 501 and the connecting ring 401, bends to one side and embeds itself into the recesses of the fixing block 501 and the connecting ring 401, forming a flat annular surface on the outer surfaces of the fixing block 501 and the connecting ring 401. By embedding the connecting block 502 entirely into the recesses of the fixing block 501 and the connecting ring 401, the fixing mechanism 5 is connected to the cleaning mechanism 4, causing the brush 402 to rotate synchronously during the rotation of the outer rod 302 relative to the inner rod 304. Figure 5 As shown, the connecting block 502 is also provided with a threaded hole, through which the connecting block 502 can be removed from the recess of the fixing block 501 and the connecting ring 401.

[0037] The slider 503 is slidably fitted onto the outside of the connecting block 502 and connected at its end to the connecting ring 401, preventing the connecting block 502 from dislodging from the fixing block 501 and the connecting ring 401. Figure 2 and Figure 3 As shown, on the outer side of the I-shaped recess of the fixed block 501 and the connecting ring 401, there is another adjacent annular recess. The slider 503 slides in the annular recess along the length of the annular recess. The length of the slider 503 is greater than that of the connecting block 502. An insert rod 504 is provided on the side near the connecting ring 401, and a corresponding opening is provided on the connecting ring 401. When the slider 503 slides to abut against the connecting ring 401, the insert rod 504 enters the connecting ring 401. At this time, the slider 503 completely covers the connecting block 502, preventing the connecting block 502 from coming out. When the slider 503 slides to abut against the fixed block 501, the connecting block 502 is released and can be taken out through its opening, releasing the cleaning mechanism 4. After the cleaning mechanism 4 is released, it can slide along the length of the inner rod 304 and can rotate outside the inner rod 304 to clean particles at other positions on the inner rod 304.

[0038] Alternatively, the fastener can be a ring fitted onto the connection between the fixing block 501 and the connecting ring 401. The ring has at least two threaded holes along its length, corresponding to the threaded holes on the outer walls of the fixing block 501 and the connecting ring 401, respectively. The ring is connected to the fixing block 501 and the connecting ring 401 by bolts, so that the outer rod 302 rotates synchronously with the cleaning mechanism 4.

[0039] In some embodiments, as Figure 4 As shown, the connecting ring 401 includes two semicircular rings. The axially opposite surfaces of the two semicircular rings are respectively provided with protruding locking blocks 404 and openings that mate with the locking blocks 404. The two semicircular rings are fitted onto the brush 402 via the locking blocks 404. The front end of the locking block 404 is wider than its rear end, and the width gradually increases towards the rear, facilitating the locking block 404's entry into the opening on the semicircular ring and preventing it from easily dislodging. Figure 4 The opening on the lower semicircular ring corresponds to the opening of pin 403.

[0040] In some embodiments, as Figure 2 and Figure 3 As shown, the slider 503 has a protrusion 505 on its outside, which serves as an anti-slip measure and facilitates the sliding of the slider 503 within the slider 503.

[0041] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A winnowing basket, characterized in that, include: The winnowing basket body includes a left winnowing basket branch (1) and a right winnowing basket branch (2). An adjustment mechanism (3) includes an adjustment rod connected to the left support (1) and the right support (2) of the winnowing basket. The adjustment mechanism (3) can be adjusted such that the left support (1) and the right support (2) of the winnowing basket move relative to each other along the length of the adjustment rod to change the opening size of the winnowing basket body; and, The cleaning mechanism (4) is mounted on the adjusting rod and is capable of cleaning particles adhering to the adjusting rod during the relative movement of the left support (1) and the right support (2) of the winnowing basket.

2. The winnowing basket according to claim 1, characterized in that, The left support (1) of the winnowing basket is placed in the right support (2) of the winnowing basket along the inner edge of the right support (2). The adjusting rod includes an outer rod (302) and an inner rod (304). The outer rod (302) is connected to the top of the side plate of the right support (2) of the winnowing basket through a first fixing member (301). The inner rod (304) is connected to the top of the side plate of the left support (1) of the winnowing basket through a second fixing member (303). The outer rod (302) faces the left support (2) of the winnowing basket. One end of the support (1) is open and sleeved outside the inner rod (304) so ​​that the left support (1) of the winnowing basket and the right support (2) of the winnowing basket can move relative to each other by changing the sleeve length of the outer rod (302) outside the inner rod (304). The cleaning mechanism (4) is installed at the open end of the outer rod (302) and can clean the particles adhering to the inner rod (304) during the relative movement of the left support (1) of the winnowing basket and the right support (2) of the winnowing basket.

3. The winnowing basket according to claim 2, characterized in that, The outer rod (302) is rotatably connected to the first fixing member (301), the inner rod (304) is fixedly connected to the second fixing member (303), the inner rod (304) is a screw, and the outer rod (302) has a thread inside and is threadedly connected to the inner rod (304).

4. The winnowing basket according to claim 3, characterized in that, The inner rod (304) is provided with an anti-detachment part (3041) at one end where it connects to the outer rod (302), and the outer rod (302) has a stepped portion inside that matches the anti-detachment part (3041), and a thread matching the inner rod (304) is formed at the opening; and / or, The inner rod (304) has a plane and a curved surface in the circumferential direction and extends along the length direction. The plane has a scale in the length direction and the curved surface has a thread in the length direction.

5. The winnowing basket according to claim 3, characterized in that, The cleaning mechanism (4) includes a brush (402) which is sleeved on the inner rod (304) and extends toward the inner rod (304) and abuts against the inner rod (304).

6. The winnowing basket according to claim 5, characterized in that, The winnowing basket also includes a fixing mechanism (5), which is disposed on the outer rod (302) to install the cleaning mechanism (4) at the open end of the outer rod (302).

7. The winnowing basket according to claim 6, characterized in that, The cleaning mechanism (4) further includes a connecting ring (401), which is sleeved on the outside of the brush (402). The outer wall of the brush (402) is provided with a plurality of protruding pins (403), which are connected to the inner wall of the connecting ring (401) through the pins (403). The fixing mechanism (5) includes a fixing block (501) fixedly sleeved on the outside of the outer rod (302), and the connecting ring (401) is connected to the fixing block (501) through a fastener.

8. The winnowing basket according to claim 7, characterized in that, The connecting ring (401) includes two semicircular rings. The two semicircular rings are respectively provided with protruding locking blocks (404) and openings that cooperate with the locking blocks (404) on their axially opposite surfaces. The two semicircular rings are sleeved on the brush (402) through the locking blocks (404).

9. The winnowing basket according to claim 7, characterized in that, The fixing component includes multiple I-shaped connecting blocks (502) and an annular slider (503). The two ends of the connecting blocks (502) are respectively shaped to fit the fixing block (501) and the connecting ring (401) so that the brush (402) can rotate synchronously during the rotation of the outer rod (302) relative to the inner rod (304). The slider (503) is slidably sleeved on the outside of the connecting blocks (502) and connected to the connecting ring (401) at its end.

10. The winnowing basket according to claim 9, characterized in that, The slider (503) has a protrusion (505) on its outside.

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