Scraper locking mechanism of horizontal scraper discharging centrifugal machine

Abstract

The utility model discloses a scraper locking mechanism of a horizontal scraper discharge centrifuge, which relates to the technical field of centrifugal screening equipment and comprises a scraper arranged on an extension portion of a conveying cylinder close to a feed inlet, and a scraper rest used for fixing the scraper. The clamping structure is used for clamping and fixing the scraper and the scraper rest; and the mounting structure is used for fixing the knife rest and the extension part. As a preferable technical scheme of the utility model, the knife rest is clamped with an embedded groove arranged on the surface of the extension part. The scraper is provided with the scraper rest, so that the contact area between the scraper and the extension part can be increased, the scraper and the scraper rest form a whole to improve the structural strength, the locking force between the scraper and the extension part is increased, and the scraper and the extension part are prevented from loosening; the technical problem that in the long-term use process of the scraper, due to vibration, a fixing structure between the scraper and the extending part is loosened, and falling is caused is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal screening equipment, in particular to a scraper locking mechanism of a horizontal scraper unloading centrifuge. Background Art

[0002] The horizontal scraper unloading centrifuge uses a rotating drum to drive the material in the drum to rotate at high speed, thereby generating centrifugal force, and uses centrifugal force to separate two immiscible liquids with different densities and a suspension of solid particles. The scraper is set on the extension of the feed barrel near the feed port. Its function is to scrape off the material attached to the inner wall of the drum, so that the material falls into the feed barrel, and is sent out of the centrifuge through the feed port of the screw feeder inside the feed barrel through the screw feeder to complete the unloading.

[0003] The current technical problems are as follows: the existing scraper is usually directly installed on the extension part of the feed barrel. When the drum rotates at high speed, the material on its inner wall will cause a violent collision with the scraper. In order to ensure that the scraper can scrape off the material, the scraper is generally designed to be a thin sheet structure with a sharp end. The sharp part protrudes from one end of the extension part to contact the inner wall of the drum. The overall thickness of the blade is thin to improve the cutting effect. The disadvantage of this structure is that once the sharp part of the scraper is subjected to pressure, the pressure will be transmitted from the sharp part to other parts of the scraper, causing it to vibrate. During long-term use, the vibration can easily cause the fixed structure between the scraper and the extension part to loosen, causing the scraper to fall off. Utility Model Content

[0004] The utility model aims to provide a scraper locking mechanism for a horizontal scraper unloading centrifuge, so as to solve the technical problem that the scraper of the horizontal scraper unloading centrifuge on the market is easy to loosen, as mentioned in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a scraper locking mechanism of a horizontal scraper unloading centrifuge, comprising a scraper, which is arranged on an extension portion of a feeding barrel near a feeding port, and the scraper locking mechanism also includes:

[0006] A blade holder for fixing the scraper;

[0007] A clamping structure, used to clamp and fix the scraper to the blade holder;

[0008] The mounting structure is used to fix the tool holder to the extension part.

[0009] As a preferred technical solution of the present utility model, the tool holder is engaged with an embedding groove provided on the surface of the extension portion.

[0010] As a preferred technical solution of the utility model, the scraper locking mechanism also includes a first pre-positioning structure for assisting the installation of the tool holder on the extension portion, the first pre-positioning structure including: clamping blocks provided at both ends of the tool holder, the clamping blocks being engaged and connected with a clamping groove provided in the extension portion.

[0011] As a preferred technical solution of the utility model, the installation structure includes:

[0012] A guide groove is provided on the surface of the block, and a mounting hole communicated with the guide groove;

[0013] A positioning screw with one end disposed in the clamping slot, the positioning screw passing through the guide slot and inserted into the mounting hole;

[0014] A positioning nut having a shape matching that of the mounting hole, the positioning nut being used to tighten the positioning screw.

[0015] As a preferred technical solution of the utility model, the scraper locking mechanism also includes a second pre-positioning structure for assisting the installation of the scraper on the tool holder, and the second pre-positioning structure includes: a positioning block arranged on the back of the scraper, and the positioning block engages with a positioning groove opened on the inner side of the tool holder.

[0016] As a preferred technical solution of the utility model, the clamping structure includes:

[0017] A movable plate with a slide rail is provided, the movable plate is provided with a rotating shaft, the rotating shaft is connected to a rotating groove bearing provided on the inner side of the tool holder, and the scraper is provided with a through groove for the movable plate to rotate;

[0018] A slider slidably arranged in the slide rail, the slider is engaged with an engagement hole provided in the scraper, and the engagement hole is communicated with the through groove;

[0019] An elastic member used to push the slider into the engaging hole.

[0020] As a preferred technical solution of the utility model, the scraper is provided with a pre-positioning hole that matches the shape of the slider, and the pre-positioning hole is communicated with the through groove.

[0021] As a preferred technical solution of the utility model, a shift block is arranged on the surface of the sliding block.

[0022] As a preferred technical solution of the utility model, a spiral conveying rod is arranged inside the feeding cylinder, and a discharge port is arranged at one end of the feeding cylinder away from the feeding port.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] The utility model is provided with a knife holder, which can increase the contact area between the scraper and the extension part, form the scraper and the knife holder into a whole to improve the structural strength, increase the locking force between the scraper and the extension part, prevent the scraper and the extension part from loosening, and solve the technical problem that the fixed structure between the scraper and the extension part becomes loose due to vibration during long-term use, causing the scraper to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the external three-dimensional structure of the utility model;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the knife holder, scraper and extension part of the utility model;

[0027] Figure 3 This is a schematic diagram of the three-dimensional structure of the knife holder and the scraper of the utility model;

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the movable plate of the utility model;

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of the scraper of the utility model.

[0030] In the figure: 1. feeding barrel; 2. spiral conveying rod; 3. feeding port; 4. extension part; 5. scraper; 6. discharge port; 7. tool holder; 8. clamping block; 9. clamping slot; 10. positioning screw; 11. guide slot; 12. mounting hole; 13. positioning nut; 14. positioning block; 15. positioning slot; 16. embedding slot; 17. movable plate; 18. rotating shaft; 19. slide rail; 20. slider; 21. elastic member; 22. shifting block; 23. through slot; 24. pre-positioning hole; 25. engaging hole. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0032] See also Figure 1-5The utility model provides a technical solution: a scraper locking mechanism of a horizontal scraper unloading centrifuge, comprising a scraper 5, which is arranged on an extension portion 4 of a feeding barrel 1 close to a feeding port 3, a spiral conveying rod 2 is arranged inside the feeding barrel 1, and a discharge port 6 is arranged at one end of the feeding barrel 1 away from the feeding port 3, and the scraper locking mechanism further comprises: a tool holder 7 for fixing the scraper 5; a first pre-positioning structure for assisting the tool holder 7 to be installed on the extension portion 4; in this embodiment, the tool holder 7 is engaged with an embedding groove 16 provided on the surface of the extension portion 4, and the first pre-positioning structure comprises: a clamping block 8 provided at both ends of the tool holder 7, and the clamping block 8 is engaged and connected with a clamping groove 9 provided on the extension portion 4;

[0033] The above technical solution can be used to conveniently install the tool holder 7 on the extension part 4 , and the clamping blocks 8 at both ends of the tool holder 7 are aligned with the clamping slots 9 of the extension part 4 and inserted, thereby pre-positioning the tool holder 7 on the extension part 4 .

[0034] like Figure 2 As shown, the scraper locking mechanism also includes: a mounting structure for fixing the blade holder 7 to the extension portion 4 after the blade holder 7 is positioned; in this embodiment, the mounting structure includes: a guide groove 11 opened on the surface of the clamping block 8, and a mounting hole 12 connected to the guide groove 11; a positioning screw 10 with one end arranged in the clamping groove 9, the positioning screw 10 passes through the guide groove 11 and is inserted into the mounting hole 12; a positioning nut 13 having a shape matching that of the mounting hole 12, and the positioning nut 13 is used to tighten the positioning screw 10;

[0035] By adopting the above technical solution, the block 8 can be stably fixed on the extension part 4, the blocks 8 at both ends of the tool holder 7 are aligned with the slots 9 of the extension part 4 and inserted, the guide groove 11 on the surface of the block 8 passes through the positioning screw 10, and the positioning screw 10 enters the mounting hole 12. The center of the mounting hole 12 is just located on the central axis of the positioning screw 10, and the positioning nut 13 is fixed on the positioning screw 10 to complete the installation.

[0036] like Figure 2 and Figure 5 As shown, the scraper locking mechanism further includes: a second pre-positioning structure for assisting the scraper 5 to be mounted on the tool holder 7; in this embodiment, the second pre-positioning structure includes: a positioning block 14 provided on the back of the scraper 5, the positioning block 14 being engaged with a positioning groove 15 provided on the inner side of the tool holder 7;

[0037] The above technical solution can be used to conveniently install the scraper 5 on the tool holder 7. The positioning block 14 behind the scraper 5 is aligned with the positioning groove 15 on the inner side of the tool holder 7 and inserted to complete the positioning, which is beneficial to the subsequent installation.

[0038] like Figure 2 and Figure 4As shown, the scraper locking mechanism also includes: a clamping structure for clamping and fixing the scraper 5 and the tool holder 7 after the scraper 5 is positioned; in this embodiment, the clamping structure includes: a movable plate 17 with a slide rail 19, the movable plate 17 is provided with a rotating shaft 18, the rotating shaft 18 is connected to a rotating groove bearing provided on the inner side of the tool holder 7, and the scraper 5 is provided with a through groove 23 for the movable plate 17 to rotate; a slider 20 slidably provided in the slide rail 19, the slider 20 is clamped and matched with a clamping hole 25 provided in the scraper 5, and the clamping hole 25 is connected with the through groove 23; an elastic member 21 for pushing the slider 20 to insert into the clamping hole 25, and a shift block 22 is provided on the surface of the slider 20;

[0039] By adopting the above technical solution, the scraper 5 can be stably fixed on the tool holder 7. The push block 22 is pressed to drive the two sliders 20 to retract into the slide rail 19. The movable plate 17 is rotated to make it rotate in the through groove 23 so that the slider 20 is aligned with the engaging hole 25 in the through groove 23. The push block 22 is released. Under the elastic force of the elastic member 21, the slider 20 is reset and engaged into the engaging hole 25 of the scraper 5, thereby completing the installation of the scraper 5 on the tool holder 7.

[0040] Further, such as Figure 2 and Figure 5 As shown, the scraper 5 is provided with a pre-positioning hole 24 that matches the shape of the slider 20, and the pre-positioning hole 24 is communicated with the through groove 23;

[0041] The above technical solution can facilitate positioning by aligning the through groove 23 on the surface of the scraper 5 with the movable plate 17, and aligning the slider 20 with the pre-positioning hole 24, so that the scraper 5 can be fitted with the tool holder 7, and then pressing the shift block 22 to drive the two sliders 20 to retract into the slide rail 19, and rotating the movable plate 17 to make it rotate in the through groove 23, so that the slider 20 is aligned with the engaging hole 25 in the through groove 23.

[0042] Working principle: When in use, first align the positioning block 14 behind the scraper 5 with the positioning groove 15 on the inner side of the tool holder 7 and insert it, press the shift block 22 to drive the two sliders 20 to retract into the slide rail 19, rotate the movable plate 17 to make it rotate in the through groove 23, so that the slider 20 is aligned with the engaging hole 25 in the through groove 23, release the shift block 22, and under the elastic force of the elastic member 21, the slider 20 is reset and snapped into the engaging hole 25 of the scraper 5, thereby completing the installation of the scraper 5 on the tool holder 7, and then align the blocks 8 at both ends of the tool holder 7 with the slots 9 of the extension part 4 and insert them, the guide groove 11 on the surface of the block 8 passes through the positioning screw 10, and the positioning screw 10 enters the mounting hole 12, the center of the mounting hole 12 is just located on the central axis of the positioning screw 10, and the positioning nut 13 is fixed to the positioning screw 10, thereby completing the entire installation.

[0043] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A scraper locking mechanism for a horizontal scraper unloading centrifuge, comprising a scraper (5) arranged on an extension (4) of a feeding cylinder (1) near a feeding port (3), characterized in that: The scraper locking mechanism also includes: A blade holder (7) for fixing the scraper (5); A clamping structure, used for clamping and fixing the scraper (5) and the blade holder (7); The mounting structure is used to fix the tool holder (7) and the extension part (4).

2. The scraper locking mechanism of the horizontal scraper discharge centrifuge according to claim 1, characterized in that: The tool holder (7) is engaged with an embedding groove (16) provided on the surface of the extension portion (4).

3. The scraper locking mechanism of the horizontal scraper discharge centrifuge according to claim 2, characterized in that: The scraper locking mechanism also includes a first pre-positioning structure for assisting the installation of the blade holder (7) on the extension portion (4), the first pre-positioning structure including: clamping blocks (8) provided at both ends of the blade holder (7), the clamping blocks (8) being engaged and connected with a clamping groove (9) provided in the extension portion (4).

4. The scraper locking mechanism of the horizontal scraper discharge centrifuge according to claim 3, characterized in that: The mounting structure comprises: A guide groove (11) provided on the surface of the block (8), and a mounting hole (12) connected to the guide groove (11); A positioning screw (10) with one end disposed in the clamping groove (9), wherein the positioning screw (10) passes through the guide groove (11) and is inserted into the mounting hole (12); A positioning nut (13) having a shape matching that of the mounting hole (12), wherein the positioning nut (13) is used to tighten the positioning screw rod (10).

5. The scraper locking mechanism of the horizontal scraper discharge centrifuge according to claim 1, characterized in that: The scraper locking mechanism also includes a second pre-positioning structure for assisting the installation of the scraper (5) on the tool holder (7), the second pre-positioning structure including: a positioning block (14) provided on the back side of the scraper (5), the positioning block (14) being engaged with a positioning groove (15) provided on the inner side of the tool holder (7).

6. The scraper locking mechanism of the horizontal scraper discharge centrifuge according to claim 5, characterized in that: The clamping structure comprises: A movable plate (17) provided with a slide rail (19), the movable plate (17) being provided with a rotating shaft (18), the rotating shaft (18) being connected to a rotating groove bearing provided on the inner side of the tool holder (7), and the scraper (5) being provided with a through groove (23) for the movable plate (17) to rotate; A slider (20) slidably arranged in the slide rail (19), the slider (20) being engaged with an engagement hole (25) provided in the scraper (5), the engagement hole (25) being communicated with the through groove (23); An elastic member (21) is used for pushing the sliding block (20) to be inserted into the engaging hole (25).

7. The scraper locking mechanism of the horizontal scraper discharge centrifuge according to claim 6, characterized in that: The scraper (5) is provided with a pre-positioning hole (24) that matches the shape of the slider (20), and the pre-positioning hole (24) is communicated with the through groove (23).

8. The scraper locking mechanism of the horizontal scraper discharge centrifuge according to claim 6, characterized in that: A shifting block (22) is provided on the surface of the sliding block (20).

9. The scraper locking mechanism of the horizontal scraper discharge centrifuge according to claim 1, characterized in that: A spiral conveying rod (2) is arranged inside the conveying cylinder (1), and a discharge port (6) is arranged at one end of the conveying cylinder (1) away from the feed port (3).

Images