Self-spacing grille blade group and grille

Abstract

The present invention discloses a self-adjusting spacing type grille blade group and a grille. The blade group includes: a driving blade is provided with a driving sliding block at its center, a limiting shaft hole is provided at its center, and a protruding sliding pin is provided at its bottom end; each driven blade is provided with a driven sliding block at its center, a rotating shaft hole is provided at its center, an inner concave sliding rail is provided at the upper end of the driven sliding block, and a protruding sliding pin is provided at the lower end; the driving blade is arranged at the front end and can be stacked with a plurality of driven blades to form a blade group. The protruding sliding pin of the driving blade can slide into the inner concave sliding rail of the adjacent blade to limit the adjacent driven blade during forward rotation; the protruding sliding pin of the driven sliding block of the previous driven blade can slide into the inner concave sliding rail of the adjacent blade, which can limit the subsequent driven blade during the forward rotation of the blade group and slide out to the rear limiting position along the inner concave sliding rail during the reverse rotation of the blade group to axially move the adjacent driven blades to increase the spacing between the driven blades. The blade group can automatically adjust the spacing between the blades, facilitating the removal of stuck hard debris.

Description

Technical Field

[0001] The invention relates to the field of water treatment equipment, and in particular to a self-adjusting spacing type grille blade assembly and a grille. Background Art

[0002] The crushing type grid is a garbage crusher installed at the water inlet of the drainage pump station. The current crushing type grid is generally composed of two sets of rotating blade groups installed in the waterproof frame and vertical drums located on the left and right of the blade groups. When the crushing type grid is started, the motor starts to work, driving the cutting blades in the cutting area of ​​the grid and the vertical drums in the drum areas on both sides to rotate in opposite directions at the same time. Small volume debris in the water can enter the next stage through the vertical drum. If there is large volume debris, such debris will be intercepted by the vertical drum rotating toward the crushing area and transferred to the crushing area for crushing. In the crushing area, the debris is quickly cut and crushed into 6-12mm fragments in the axial and radial directions by two sets of rotating blades. The crushed debris does not need to be collected and salvaged or processed for secondary treatment, but directly enters the subsequent lifting pump with the water flow. Using crushing type grids in pumping stations can effectively reduce the blockage problem of pumps and improve the working efficiency of pumping stations.

[0003] The gasket and two independent cutting blades of the existing crushing type grid are installed on two parallel shafts. The blades are alternated with each other to cut the debris in a spiral shape. Generally, the cutting blades and gaskets are hexagonal, and some brands are hexagonal plum blossom type, installed on matching active and passive shafts. The blade group composed of multiple blades can completely crush large particles of debris. The blades are generally made of special alloy steel with high strength and relatively uniform surface. The application of this material and the special design of the blades can ensure that the grid can stably and thoroughly cut large-volume debris of different textures. The solid debris intercepted in the crushing type grid can be completely removed as the cutting blades rotate. The alternating design of the grid cutting blades also enables the grid to self-clean the blade group while crushing the debris, without the need to add other cleaning equipment. The cutting blade of the crushing type grid adopts a two-way rotation design. When the sensor detects that flexible debris is involved in the crushing area or rigid debris is stuck in the blade gap, the reversal program is activated, and the blade group can move in the opposite direction to release the debris that hinders the normal operation of the crushing type grid.

[0004] However, the distance between adjacent blades of the existing crushing grid cannot be changed. Once debris is stuck, the only way to release the debris is to reverse the blade set. However, the blade reversal can only release soft debris, but cannot release hard debris stuck in the blade interval. If it is not manually cleaned in time, the hard debris is likely to cause deformation and damage to the blade during the blade rotation, further shortening the blade life and making the subsequent crushing effect worse. Summary of the invention

[0005] Based on the problems existing in the prior art, the object of the present invention is to provide a self-adjusting spacing type grille blade group and a grille, which can solve the problems that the spacing between the cutting blades of the existing grille blade group is fixed, it is easy to get stuck with sundries, the presence of sundries will scratch the blades, further reduce the blade life, and make the subsequent crushing effect worse, etc.

[0006] The object of the present invention is achieved by the following technical solutions:

[0007] An embodiment of the present invention provides a self-adjusting spacing type grille blade group, including:

[0008] A driving blade and a plurality of driven blades; wherein,

[0009] A driving sliding block is fixedly arranged at the central part of the driving blade, a limiting shaft hole is arranged at the center of the driving sliding block, and a convex sliding pin is arranged at the bottom end of the driving sliding block;

[0010] A driven sliding block is fixedly arranged at the central part of each driven blade, a rotating shaft hole is arranged at the center of the driven sliding block, the driven blade is located at the middle part of the driven sliding block, a concave sliding rail is arranged at the upper end of the driven sliding block, and a convex sliding pin is arranged at the lower end of the driven sliding block;

[0011] The driving blade is arranged at the front end and can be stacked with a plurality of driven blades to form a blade group. The convex sliding pin at the bottom end of the driving sliding block of the driving blade can slidably enter the concave sliding rail at the upper end of the driven sliding block of the adjacent driven blade, and can limit the adjacent driven blade when the blade group rotates forward; the convex sliding pin of the driven sliding block of the previous driven blade can slidably enter the concave sliding rail of the driven sliding block of the adjacent subsequent driven blade, and can limit the subsequent driven blade when the blade group rotates forward, and can slide out to the rear limiting position along the concave sliding rail when the blade group rotates reversely, so that the adjacent driven blades move axially, and the spacing between the driven blades is increased.

[0012] An embodiment of the present invention also provides a self-adjusting spacing type grille. The blade group of the grille adopts the self-adjusting spacing type grille blade group described in the present invention;

[0013] The self-adjusting spacing type grille blade group is arranged on the limiting driving shaft of a driving device that can rotate forward and backward, and the driving blade of the self-adjusting spacing type grille blade group is radially limited and fixedly arranged at one end of the limiting driving shaft.

[0014] It can be seen from the technical solutions provided by the present invention described above that for the self-adjusting spacing type grille blade group and the grille provided by the embodiments of the present invention, the beneficial effects are as follows:

[0015] Since the center part of the active blade is provided with an active sliding block having a convex sliding pin, and the center parts of the driven blades are provided with driven sliding blocks having an inner concave slide rail at the upper end and a convex sliding pin at the lower end, when the active blade and the driven blades are stacked on the limit drive shaft to form a blade group, the active blade and the driven blades can be sequentially limited during forward rotation, keeping the distance between the blades fixed. During reverse rotation, the driven blades axially slide under the action of the driven sliding blocks to increase the distance between the blades, realizing the automatic adjustment of the blade spacing. When used in a crushing grille, it is convenient to release stuck debris, extend the blade life, and ensure the subsequent crushing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 FIG. is a schematic diagram of the overall structure of the self-adjusting spacing type grille blade group provided by the embodiment of the present invention;

[0018] Figure 2 FIG. is a schematic diagram of the cooperation between the active blade and the driven blade of the self-adjusting spacing type grille blade group provided by the embodiment of the present invention;

[0019] Figure 3 FIG. is a schematic diagram of the structure of the active blade of the self-adjusting spacing type grille blade group provided by the embodiment of the present invention;

[0020] Figure 4 FIG. is a top view schematic diagram of the active blade of the self-adjusting spacing type grille blade group provided by the embodiment of the present invention;

[0021] Figure 5 FIG. is a schematic diagram of the structure of the driven blade of the self-adjusting spacing type grille blade group provided by the embodiment of the present invention;

[0022] Figure 6 FIG. is a top view schematic diagram of the driven blade of the self-adjusting spacing type grille blade group provided by the embodiment of the present invention;

[0023] Figure 7 FIG. is a schematic diagram of the limit drive shaft of the self-adjusting spacing type grille blade group provided by the embodiment of the present invention;

[0024] The component names corresponding to the marks in the figure are as follows: 1 - active blade; 11 - cutting edge of the active blade; 2 - annular limiting module; 21 - limiting shaft hole; 22 - protruding sliding pin of the annular limiting module; 3 - driven blade; 31 - cutting edge of the driven blade; 4 - annular rotating module; 41 - concave sliding rail of the annular rotating module; 42 - protruding sliding pin of the annular rotating module; 43 - rotating shaft hole; 5 - limiting drive shaft; 51 - active blade mounting section; 52 - driven blade mounting section; A - forward rotation; B - reverse rotation; C - blade separation distance. Detailed implementation mode

[0025] Next, in combination with the specific content of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. The content not described in detail in the embodiments of the present invention belongs to the prior art well-known to those skilled in the art.

[0026] As Figures 1 to 4 shown, the embodiment of the present invention provides a self-adjusting spacing type grille blade group, which can automatically adjust and increase the spacing between the blades in the reverse state, including:

[0027] An active blade and several driven blades; among them,

[0028] A driving sliding block is fixedly arranged at the central part of the active blade, a limiting shaft hole is arranged at the center of the driving sliding block, and a protruding sliding pin is arranged at the bottom end of the driving sliding block;

[0029] A driven sliding block is fixedly arranged at the central part of each driven blade, a rotating shaft hole is arranged at the center of the driven sliding block, the driven blade is located in the middle of the driven sliding block, a concave sliding rail is arranged at the upper end of the driven sliding block, and a protruding sliding pin is arranged at the lower end of the driven sliding block;

[0030] The active blade is arranged at the front end and can be stacked with several driven blades to form a blade group. The protruding sliding pin at the bottom end of the driving sliding block of the active blade can slide into the concave sliding rail at the upper end of the driven sliding block of the adjacent driven blade, and can limit the adjacent driven blade when the blade group rotates forward; the protruding sliding pin of the driven sliding block of the previous driven blade can slide into the concave sliding rail of the driven sliding block of the adjacent next driven blade, and can limit the next driven blade when the blade group rotates forward and can slide out to the rear limiting position along the concave sliding rail when the blade group rotates in the reverse direction to axially move the adjacent driven blades to increase the spacing between the driven blades.

[0031] In the above-mentioned blade group, the raised sliding pins of the active sliding block and the raised sliding pins of the driven sliding block are both quadrilateral raised structures with inclined bottom edges (see Figure 3 , 4 );

[0032] The concave slide rail of the driven sliding block is a groove structure with an inclined bottom edge that matches the raised sliding pin (see Figure 5 , 6 ).

[0033] The raised sliding pins and the concave slide rails of this structure match each other. After sliding in, they can slide to the limit position in one direction (i.e., the forward rotation of the blade), so that the blades are limited in sequence from the active blade, making each blade of the entire blade group maintain a fixed spacing and rotate driven by the limit drive shaft to complete the cutting and crushing of the object. In the other direction (i.e., the forward rotation of the blade), the raised sliding pin slides out of the concave slide rail. In this way, under the action of the raised sliding pin, the driven blade undergoes an axial displacement, increasing the spacing between adjacent driven blades and then being limited, driving each blade to increase the spacing in sequence, realizing the automatic adjustment of the increased spacing of the entire group of blades. The active blade and its adjacent driven blade also increase the spacing in this way during reverse rotation, and will not be repeated here.

[0034] In the above-mentioned blade group, the number of raised sliding pins at the bottom end of the active sliding block is at least two. It only needs to be consistent with and match the number of concave slide rails of the driven slider of the adjacent driven blade. For the sake of understanding, Figure 3 shows two in the figure, and the specific number in actual application is not limited to two;

[0035] The number of concave slide rails and raised sliding pins on the driven sliding block is at least two, as long as it is consistent with and matches the number of concave slide rails and raised sliding pins on the adjacent driven sliding block. For the sake of understanding, Figure 5 shows two in the figure, and the specific number in actual application is not limited to 2. This can increase the strength and stability of the blade group during forward limit operation.

[0036] Preferably, both the active sliding block and the driven sliding block adopt annular structures.

[0037] In the above-mentioned blade group, the limit shaft hole of the active sliding block of the active blade is any one of an internal hexagonal hole, an internal pentagonal hole, an internal quadrilateral hole, an internal triangular hole, an internal semi-circular hole, and a plum blossom shape. The limit shaft hole with such a structure can cooperate with the corresponding limit drive shaft to limit the active blade in the radial direction, so that it always rotates synchronously with the limit drive shaft.

[0038] See Figure 7 , the above-mentioned blade group further includes: a limit drive shaft, and the front section of this limit drive shaft is an active blade installation section; the structure of this active blade installation section matches the structure of the limit shaft hole of the active sliding block of the active blade;

[0039] The limiting drive shaft at the rear end of the active blade mounting section is a cylindrical driven blade mounting section.

[0040] The front section of the active blade mounting section of the above-mentioned blade group limiting drive shaft is any one of a hexagonal prism, a pentagonal prism, a quadrangular prism, a triangular prism, a semi-cylindrical shape, and a plum blossom-shaped column. As long as it can match the limiting shaft hole of the active sliding block of the active blade to achieve limiting.

[0041] In the above-mentioned blade group, cutting edges are provided on the outer circumferences of the active blade and each driven blade.

[0042] In the above-mentioned blade group, the structures of the driven sliding blocks of each driven blade are the same.

[0043] Preferably, in the above-mentioned blade group, the active blade and the active sliding block are of an integrated structure; the driven blade and the driven sliding block are of an integrated structure.

[0044] In the above-mentioned blade group, the heights of the active sliding block and the driven sliding block determine the spacing between the blades of the blade group.

[0045] An embodiment of the present invention also provides an automatically adjustable spacing grille, and the blade group of this grille adopts the above-mentioned automatically adjustable spacing grille blade group;

[0046] The above-mentioned automatically adjustable spacing grille blade group is arranged on the limiting drive shaft of a driving device that can rotate forward and backward; the active blade of the above-mentioned automatically adjustable spacing grille blade group is radially limited and fixedly arranged at one end of the limiting drive shaft.

[0047] The following further describes the embodiments of the present invention in detail.

[0048] The present invention sets an active sliding block on the active blade and sets driven sliding blocks on each driven blade. By using the cooperation between the active sliding block and each driven sliding block, when the limiting drive shaft rotates in reverse, the spacing between the blades can be increased, achieving the purpose of automatically adjusting the blade spacing. In this way, when used in a grille, the hard debris stuck between the blades can be removed by reversing the blade group.

[0049] Specifically, the driven sliding block is a part of the structure of the driven blade. The driven sliding block can be divided into a part above the blade horizontal plane and a part below the blade horizontal plane. There are several concave inner sliding rails in the part of the driven sliding block above the blade, and convex sliding pins with the same number and matching shape as the concave inner sliding rails are processed in the part below the blade plane. The length of the concave inner sliding rail should be longer than that of the convex sliding pin, so that the convex sliding pin can freely slide along the sliding rail in the concave inner sliding rail and leave a part of the space (as Figure 2 shown).

[0050] When the grille is working properly, the active blade mounting section of the limit drive shaft (see Figure 7 shown) drives the active blade (such as Figure 3 , 4 shown). The protruding sliding pin at the lower end of the active sliding block of the active blade is stuck in the concave sliding groove of the driven sliding block of the second driven blade, driving the second driven blade to rotate forward (as Figure 2 shown).

[0051] The protruding sliding pin of the driven sliding block of the second blade is stuck in the protruding sliding groove of the driven sliding block of the third blade, driving the third blade to move forward. And so on until the entire set of blades rotates forward and enters the normal working state. At this time, there is no gap between the sliding blocks of two adjacent blades, and the distance between two adjacent blades is the normal working distance (as Figure 1 shown).

[0052] When foreign objects are stuck inside the grille, the control system of the grille activates the reverse program. At this time, the limit drive shaft of the drive device rotates in the reverse direction. The protruding sliding pin at the lower end of the active sliding block of the active blade rotates reversely in the concave sliding groove of the driven sliding block of the second blade. Since the lower side of the concave sliding groove is an inclined plane, the protruding sliding pin will generate an axial displacement during reverse sliding, thereby driving the blade to move axially, increasing the distance between two adjacent blades, that is, a release gap appears between two adjacent blades at this time (see Figure 2 shown); when the protruding sliding pin slides to the end of the corresponding concave sliding groove and gets stuck, it drives the second blade to rotate reversely. And so on. After the sliding action is completed, the intervals between the blades become larger, releasing the foreign objects. The released foreign objects will flow out of the grille under the drive of the water flow.

[0053] Furthermore, to prevent foreign objects from getting stuck in the concave sliding groove, a corrugated rubber sleeve can be installed outside the sliding block of the blade group to protect the concave sliding groove and the protruding sliding pin.

[0054] The blade group of the present invention has at least the following advantages:

[0055] It can increase the blade gap when the grille rotates in reverse, and can fully release foreign objects into the next stage or perform secondary cutting. The crushing type grille applying the blade group of the present invention can reduce the manual maintenance workload while extending the blade life, and may enable the grille to achieve a more perfect unmanned full-automatic operation.

[0056] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A self - adjusting spacing type grille blade group, characterized in that, it includes: a driving blade and a number of driven blades; wherein, a driving sliding block is fixedly arranged at the central part of the driving blade, a limiting shaft hole is arranged at the center of the driving sliding block, and a convex sliding pin is arranged at the bottom end of the driving sliding block; a driven sliding block is fixedly arranged at the central part of each driven blade, a rotating shaft hole is arranged at the center of the driven sliding block, the driven blade is located at the middle part of the driven sliding block, a concave sliding rail is arranged at the upper end of the driven sliding block, and a convex sliding pin is arranged at the lower end of the driven sliding block; the driving blade is arranged at the front end and can be stacked with a number of driven blades to form a blade group. The convex sliding pin at the bottom end of the driving sliding block of the driving blade can slide into the concave sliding rail at the upper end of the driven sliding block of the adjacent driven blade, and can limit the adjacent driven blade when the blade group rotates forward; the convex sliding pin of the driven sliding block of the previous driven blade can slide into the concave sliding rail of the driven sliding block of the adjacent subsequent driven blade, and can limit the subsequent driven blade when the blade group rotates forward and can slide out to the rear limiting position along the concave sliding rail when the blade group rotates backward, causing the adjacent driven blades to move axially and increasing the spacing between the driven blades; the convex sliding pins of the driving sliding block and the convex sliding pins of the driven sliding block are both quadrilateral convex structures with inclined bottom edges; the concave sliding rail of the driven sliding block is a groove structure with an inclined bottom edge matching the convex sliding pin; it further includes: a limiting driving shaft, and the front section of the limiting driving shaft is a driving blade installation section; the structure of the driving blade installation section matches the structure of the limiting shaft hole of the driving sliding block of the driving blade; the limiting driving shaft at the rear end of the driving blade installation section is a cylindrical driven blade installation section.

2. The self - adjusting spacing type grille blade group according to claim 1, characterized in that, the number of the convex sliding pins at the bottom end of the driving sliding block is at least two; the number of the concave sliding rails and convex sliding pins on the driven sliding block is at least two.

3. The self - adjusting spacing type grille blade group according to claim 1, characterized in that, the limiting shaft hole of the driving sliding block of the driving blade is any one of an internal hexagonal hole, an internal pentagonal hole, an internal quadrilateral hole, an internal triangular hole, an internal semi - circular hole and a plum blossom cylindrical hole.

4. The self - adjusting spacing type grille blade group according to claim 1, characterized in that, the driving blade installation section at the front section of the limiting driving shaft is any one of a hexagonal prism, a pentagonal prism, a quadrilateral prism, a triangular prism, a semi - cylindrical shape, a plum blossom cylindrical shape.

5. The self - adjusting spacing type grille blade group according to claim 1, characterized in that, cutting edges are arranged on the outer peripheries of the driving blade and each driven blade.

6. The self - adjusting spacing type grille blade group according to claim 1, characterized in that, the structures of the driven sliding blocks of each driven blade are the same.

7. A self - adjusting spacing type grille, characterized in that, the blade group of this grille adopts the self - adjusting spacing type grille blade group according to any one of claims 1 to 6; The self-adjusting spacing type grille blade group is arranged on the limit driving shaft of a driving device capable of rotating forward and backward; the driving blade of the self-adjusting spacing type grille blade group is radially and limit-fixed at one end of the limit driving shaft.

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