Screen installation spreader

Abstract

The utility model discloses a screen installation spreader which comprises a screw rod head, a sleeve cover, a sleeve, a base, a supporting arm, an upper hinge seat, an upper hinge arm, a spreading block, a lower hinge arm and a lower hinge seat. The screen mesh is damaged due to mutual friction between the screen mesh and material impurities in the working process, the screen mesh needs to be replaced, the screen mesh installation spreader is manufactured, in the process of replacing the screen mesh, outward tension of the screen mesh installation spreader can act on the head end face and the tail end face of other assembled screen meshes, and therefore the screen mesh can be replaced. Gaps among other filter screens are eliminated before the last group of filter screens are installed, larger force is applied to enable the filter screens to have certain elastic deformation under the condition that the functional performance of the filter screens is guaranteed to be intact, it is guaranteed that the last group of filter screens are installed smoothly, reasonable interference magnitude exists among the filter screens after the opening tool is loosened and taken out, and the filter screens are not prone to falling off. And the filter screen is stable and reliable when equipment works. The device has the advantages of being simple in structure, stable, accurate and reliable in work, high in efficiency, labor-saving and the like.

Description

Technical Field

[0001] This utility model relates to the field of centrifuge screen assembly technology, specifically a screen installation support. Background Technology

[0002] Currently, in the use of two-stage piston centrifuges, the solid and liquid phases in the mixture are filtered to classify, screen, and filter the materials. When the drum rotates at high speed, centrifugal force is generated, causing the liquid to be thrown out through the centrifuge screen, while solid particles and impurities are intercepted by the screen and separated within the drum, finally discharged through the discharge port. During operation, friction between the screen and the material impurities eventually damages the screen, requiring replacement. The replacement process requires specific assembly requirements for the screens, necessitating the arrangement of multiple sets of fan-shaped screens within the same circumference, ensuring that they are neither too loose nor too tight. An interference fit is used during assembly to ensure that the screens do not detach due to vibration during centrifuge startup, operation, or shutdown. Therefore, this invention provides a screen installation support to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a screen installation support to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a screen installation support, comprising a spiral rod head, a sleeve cover, a sleeve, a base, a support arm, an upper hinge seat, an upper hinge arm, a support block, a lower hinge arm, and a lower hinge seat.

[0005] A sleeve cap is installed on the spiral rod head, the sleeve installed on the spiral rod head is connected to the sleeve cap, and a base is threaded onto the sleeve. The base is rotatably connected to the support arms on both sides, and the bottom ends of the two support arms are rotatably connected to the expansion block.

[0006] The bottom end of the spiral rod head is fitted with a lower hinge seat via a stepped hexagonal bolt. The lower hinge seat is rotatably connected to the expansion block via a lower hinge arm. The outer side of the bottom end of the sleeve is threaded with an upper hinge seat. The bottom end of the sleeve is installed inside the upper end of the upper hinge seat. The upper hinge seat is rotatably connected to the expansion block via an upper hinge arm, and the upper hinge arm is positioned above the lower hinge arm.

[0007] Rollers are installed at the bottom ends of both of the supporting blocks via roller shafts. There are two rollers, and the two rollers are arranged in a symmetrical structure along the axis of the device.

[0008] As a preferred embodiment of this utility model, the spiral rod head includes a torque, a spiral rod, a spiral rod feed screw, a spiral rod fixing thread, and a spiral rod fastening screw hole. The spiral rod has a torque inside at its top end and a spiral rod fastening screw hole above the torque. The spiral rod has a spiral rod feed screw at its bottom end and a spiral rod fixing thread at the bottom end of the spiral rod feed screw.

[0009] As a preferred embodiment of this utility model, the inner end of the sleeve cover is provided with a sleeve cover hole, and the lower end of the sleeve cover is installed on the sleeve cover thread.

[0010] In a preferred embodiment of this utility model, the sleeve includes an upper sleeve thread, an outer sleeve thread, an inner sleeve hole, and a lower sleeve thread. The upper sleeve thread is provided inside the upper end of the sleeve, the outer sleeve thread is provided outside the sleeve, the inner sleeve hole is provided inside the sleeve, and the lower sleeve thread is provided inside the bottom end of the sleeve. The sleeve cap is embedded inside the upper end of the sleeve, and the upper sleeve thread and the sleeve cap thread are engaged and connected.

[0011] In a preferred embodiment of this utility model, the base has through-holes on both sides, the upper positioning pin of the support arm is inserted into the base side ear hole and rotatably connected to the base, and the bottom end of the support arm is rotatably connected to the upper hinge arm through the lower positioning pin of the support arm.

[0012] As a preferred embodiment of this utility model, the upper hinge seat has an integrally formed boss on the outer side of its upper end, upper hinge seat ear holes are provided at both ends of the upper hinge seat, and a center hole of the upper hinge seat is opened on the inner side of the upper hinge seat ear holes. The bottom end of the inner side of the boss is provided with an upper hinge seat end face, and the bottom end of the sleeve is installed in the boss and connected by the external thread of the sleeve.

[0013] In a preferred embodiment of this utility model, the top end of the upper hinge arm is rotatably connected to the upper hinge seat ear hole on the outside of the upper hinge seat via an upper hinge arm positioning pin, the bottom end of the upper hinge arm is rotatably connected to the upper hinge hole of the upper support block, the top end of the lower hinge arm is rotatably connected to the lower hinge seat hinge hole on the outside of the lower hinge seat via an upper hinge arm positioning pin, and the bottom end of the lower hinge arm is rotatably connected to the lower hinge hole of the inner end of the support block via a lower hinge arm positioning pin.

[0014] As a preferred embodiment of this utility model, a working opening for the supporting block is provided at the middle position of the outer end of the supporting block.

[0015] As a preferred embodiment of this utility model, the stepped hexagonal bolt is located in the countersunk hole of the lower hinge seat opened at the bottom end of the lower hinge seat.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. During operation, the screen may be damaged due to friction between the screen and the material impurities, requiring screen replacement. By creating a screen installation spreader, the outward tension of this invention can be applied to the head and tail ends of other assembled screens during the screen replacement process. This eliminates the gaps between other screens before the last set of screens is installed, and applies greater force to give the screens a certain degree of elastic deformation while ensuring their functional performance.

[0018] 2. To ensure the smooth installation of the last set of filter screens, after loosening and removing the spreading tool, there is a reasonable interference fit between the filter screens, making the filter screens stable and reliable during equipment operation. Therefore, this invention has the advantages of simple structure, stable, accurate and reliable operation, high efficiency, and labor saving. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a screen opener according to the present invention;

[0020] Figure 2 This is a schematic cross-sectional view of a screen opener according to this utility model;

[0021] Figure 3 This is a schematic diagram of a spiral mechanism for a screen opener according to this utility model;

[0022] Figure 4 This is a schematic diagram of the opening mechanism of a screen opener according to this utility model.

[0023] In the diagram: 1. Helical rod head; 101. Torque hole; 102. Helical rod; 103. Helical rod feed thread; 104. Helical rod fixing thread; 105. Helical rod fastening screw hole; 2. Sleeve cap: 201. Sleeve cap hole; 202. Sleeve cap thread; 3. Sleeve; 301. Upper thread on sleeve; 302. External thread on sleeve; 303. Inner hole of sleeve; 304. Lower thread on sleeve; 4. Base; 401. Side lug hole of base; 5. Support arm; 501. Upper locating pin of support arm; 502. Lower locating pin of support arm; 6. Upper hinge seat; 601. Boss 602. Upper hinge seat side ear hole; 603. Upper hinge seat center hole; 604. Upper hinge seat end face; 7. Upper hinge arm; 701. Upper locating pin of upper hinge arm; 8. Spreading block; 801. Spreading block upper hinge hole; 802. Spreading block working opening; 803. Spreading block lower hinge hole; 9. Lower hinge arm; 901. Lower hinge arm upper locating pin; 902. Lower hinge arm lower locating pin; 10. Lower hinge seat; 1001. Lower hinge seat hinge hole; 1002. Lower hinge seat countersunk hole; 11. Roller; 1101. Roller shaft; 12. Stepped internal hex bolt. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. "Multiple" means two or more, and unless otherwise explicitly limited, all of them fall within the scope of protection of this utility model.

[0027] Example: Figure 1-4 A screen installation support includes a spiral rod head 1, a sleeve cover 2, a sleeve 3, a base 4, a support arm 5, an upper hinge seat 6, an upper hinge arm 7, a support block 8, a lower hinge arm 9, and a lower hinge seat 10. The sleeve cover 2 is installed on the spiral rod head 1, the sleeve 3 installed on the spiral rod head 1 is connected to the sleeve cover 2, and the base 4 is threadedly connected to the sleeve 3. The two sides of the base 4 are rotatably connected to the support arm 5, and the bottom ends of the two support arms 5 are rotatably connected to the support block 8.

[0028] The bottom end of the spiral rod head 1 is equipped with a lower hinge seat 10 through a stepped hexagonal bolt 12. The lower hinge seat 10 is rotatably connected to the expansion block 8 through the lower hinge arm 9. The outer side of the bottom end of the sleeve 3 is threadedly connected to an upper hinge seat 6. The bottom end of the sleeve 3 is installed inside the upper end of the upper hinge seat 6. The upper hinge seat 6 is rotatably connected to the expansion block 8 through the upper hinge arm 7, and the upper hinge arm 7 is positioned above the lower hinge arm 9.

[0029] Two rollers 11 are installed at the bottom ends of the two supporting blocks 8 via roller shafts 1101. The two rollers 11 are arranged in a front-to-back symmetrical structure along the axis of the device.

[0030] The screw head 1 includes a torque 101, a screw 102, a screw feed screw 103, a screw fixing thread 104, and a screw fastening screw hole 105. The screw 102 has a torque 101 inside its top end and a screw fastening screw hole 105 above the torque 101. The screw 102 has a screw feed screw 103 at its bottom end and a screw fixing thread 104 at the bottom end of the screw feed screw 103.

[0031] The inner end of the sleeve cap 2 is provided with a sleeve cap hole 201, and the lower end of the sleeve cap 2 is installed with a sleeve cap thread 202.

[0032] The sleeve 3 includes an upper sleeve thread 301, an outer sleeve thread 302, an inner sleeve hole 303, and a lower sleeve thread 34. The upper sleeve thread 301 is provided inside the upper end of the sleeve 3, the outer sleeve thread 302 is provided outside the sleeve 3, the inner sleeve hole 303 is provided inside the sleeve 3, and the lower sleeve thread 34 is provided inside the bottom end of the sleeve 3. The sleeve cap 2 is embedded inside the upper end of the sleeve 3, and the upper sleeve thread 301 and the sleeve cap thread 202 are connected in a cooperative manner.

[0033] Both sides of the base 4 are provided with base side ear holes 401 with a through structure. The upper positioning pin 501 of the support arm 5 is inserted into the base side ear hole 401 and rotatably connected to the base 4. The bottom end of the support arm 5 is rotatably connected to the upper hinge arm 7 through the lower positioning pin 502.

[0034] The upper hinge seat 6 has an integral boss 601 on the outer side of its upper end. Both ends of the upper hinge seat 6 have upper hinge seat ear holes 602. The upper hinge seat center hole 603 is opened inside the upper hinge seat ear holes 602. The bottom of the inner side of the boss 601 has an upper hinge seat end face 604. The bottom end of the sleeve 3 is installed in the boss 601 and connected by the sleeve external thread 302.

[0035] The top end of the upper hinge arm 7 is rotatably connected to the upper hinge seat ear hole 602 on the outside of the upper hinge seat 6 via the upper hinge arm positioning pin 701. The bottom end of the upper hinge arm 7 is rotatably connected to the upper hinge hole 801 on the upper end of the support block 8. The top end of the lower hinge arm 9 is rotatably connected to the lower hinge seat hinge hole 1001 on the outside of the lower hinge seat 10 via the lower hinge arm positioning pin 901. The bottom end of the lower hinge arm 9 is rotatably connected to the lower hinge hole 803 on the inner end of the support block 8 via the lower hinge arm positioning pin 902.

[0036] A working opening 802 is provided at the middle of the outer end of the support block 8.

[0037] The stepped hex bolt 12 is located inside the countersunk hole 1002 of the lower hinge seat 10 at the bottom end.

[0038] Working principle:

[0039] In use, the sleeve cap 2 is screwed onto the sleeve 3 via the sleeve cap thread 202. The screw rod 102 is passed through the sleeve cap hole 201, and the screw rod feed thread 103 is screwed into the sleeve lower thread 304. Then, the base 4 is screwed onto the sleeve outer thread 302. The upper hinge seat side ear hole 602 is inserted into the screw rod feed thread 103, and the upper end face of the upper hinge seat 6 contacts the lower end face of the sleeve. The stepped hexagonal bolt 11 is inserted into the lower hinge seat countersunk hole 1002 and fixed together with the screw rod fixing thread 104, ensuring that the lower hinge seat 10 can be positioned on the step. Rotate the hex bolt 12, and then hinge the support arm 5 to the upper locating pin 501 of the support arm and the ear hole 401 on the base side. The lower locating pin 502 of the support arm is hinged to the hinge hole 801 on the expansion block of the expansion block 8. The upper locating pin 701 of the upper hinge arm of the upper hinge arm is hinged to the ear hole 602 on the side of the upper hinge seat, and the lower end is hinged to the hinge hole 801 on the expansion block of the expansion block 8. The upper locating pin 901 of the lower hinge arm of the lower hinge arm is hinged to the hinge hole 1001 on the lower hinge seat. The lower locating pin 902 of the lower hinge arm is hinged to the lower hinge hole 803 on the expansion block.

[0040] After a centrifuge screen installation and spreading tool is assembled, rotating the sleeve 3 causes the base 4 and upper hinge seat 6 to move up and down, driving the support arm 5, upper hinge arm 7, lower hinge arm 9, and spreading block 8 to move together. After the working opening 802 of the spreading block contacts the end face of the screen, rotating the screw head 1 causes the lower hinge seat 10 to move up and down independently, causing the lower hinge arm 10 and spreading block 8 to move together. Adjusting the working opening 802 of the spreading block to make contact with the end face of the screen, the largest possible contact surface is selected to prevent the working opening 802 from squeezing the end face of the screen off-center. Rollers 1101 are also set on the roller shafts 11 at both ends of the spreading block 8 to prevent the spreading block 8 from rubbing against the inner wall of the roller, which would affect the assembly accuracy.

[0041] Finally, a nut is installed on the screw hole 105 of the screw rod, and a prepared ratchet wrench is fixed on the hexagon of the screw rod head 1 to facilitate the adjustment of the rotating sleeve 3, so that the spreading block 8 is spread outward, so that the gaps between the two ends of the other assembled filter screens are eliminated before the last set of filter screens is installed, and greater force is applied to make it have a certain elastic deformation while ensuring the functional performance of the filter screens, so as to ensure the smooth installation of the last set of filter screens. After loosening and removing the spreading tool, there is a reasonable interference fit between the filter screens, ensuring the stability of the working filter screen position.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A screen installation support, comprising a spiral rod head (1), a sleeve cap (2), a sleeve (3), a base (4), a support arm (5), an upper hinge seat (6), an upper hinge arm (7), a support block (8), a lower hinge arm (9), and a lower hinge seat (10), characterized in that: A sleeve cap (2) is installed on the spiral rod head (1). A sleeve (3) installed on the spiral rod head (1) is connected to the sleeve cap (2). A base (4) is threaded onto the sleeve (3). The base (4) is rotatably connected to the support arm (5) on both sides. The bottom ends of the two support arms (5) are rotatably connected to the spreading block (8). The bottom end of the spiral rod head (1) is fitted with a lower hinge seat (10) via a stepped hexagonal bolt (12). The lower hinge seat (10) is rotatably connected to the expansion block (8) via a lower hinge arm (9). The outer side of the bottom end of the sleeve (3) is threaded with an upper hinge seat (6). The bottom end of the sleeve (3) is installed inside the upper end of the upper hinge seat (6). The upper hinge seat (6) is rotatably connected to the expansion block (8) via an upper hinge arm (7), and the upper hinge arm (7) is positioned above the lower hinge arm (9). At the bottom of each of the two supporting blocks (8), there are two rollers (11) installed through roller shafts (1101). The two rollers (11) are arranged in a front-to-back symmetrical structure along the axis of the device.

2. The screen installation support according to claim 1, characterized in that: The spiral head (1) includes a torque (101), a spiral rod (102), a spiral rod feed screw (103), a spiral rod fixing thread (104), and a spiral rod fastening screw hole (105). The spiral rod (102) has a torque (101) inside its top end and a spiral rod fastening screw hole (105) above the torque (101). The spiral rod (102) has a spiral rod feed screw (103) at its bottom end and a spiral rod fixing thread (104) at the bottom end of the spiral rod feed screw (103).

3. A screen installation support according to claim 1, characterized in that: The inner end of the sleeve cap (2) is provided with a sleeve cap hole (201), and the lower end of the sleeve cap (2) is installed with a sleeve cap thread (202).

4. A screen installation support according to claim 1, characterized in that: The sleeve (3) includes an upper sleeve thread (301), an outer sleeve thread (302), an inner sleeve hole (303), and a lower sleeve thread (34). The upper sleeve thread (301) is provided inside the upper end of the sleeve (3), the outer sleeve thread (302) is provided outside the sleeve (3), the inner sleeve hole (303) is provided inside the sleeve (3), and the lower sleeve thread (34) is provided inside the bottom end of the sleeve (3). The sleeve cap (2) is embedded inside the upper end of the sleeve (3), and the upper sleeve thread (301) and the sleeve cap thread (202) are connected in a cooperative manner.

5. A screen installation support according to claim 1, characterized in that: Both sides of the base (4) are provided with base side ear holes (401) with a through structure. The upper positioning pin (501) of the upper end of the support arm (5) is inserted into the base side ear hole (401) and rotatably connected to the base (4). The bottom end of the support arm (5) is rotatably connected to the upper hinge arm (7) through the lower positioning pin (502).

6. A screen installation support according to claim 1, characterized in that: The upper hinge seat (6) has an integrally formed boss (601) on the outer side of its upper end. Both ends of the upper hinge seat (6) are provided with upper hinge seat ear holes (602). The upper hinge seat center hole (603) is opened inside the upper hinge seat ear holes (602). The bottom of the inner side of the boss (601) is provided with an upper hinge seat end face (604). The bottom end of the sleeve (3) is installed inside the boss (601) and connected by the sleeve external thread (302).

7. A screen installation support according to claim 1, characterized in that: The top end of the upper hinge arm (7) is rotatably connected to the upper hinge seat ear hole (602) on the outside of the upper hinge seat (6) via the upper hinge arm positioning pin (701). The bottom end of the upper hinge arm (7) is rotatably connected to the upper hinge hole (801) on the upper end of the support block (8). The top end of the lower hinge arm (9) is rotatably connected to the lower hinge seat hinge hole (1001) on the outside of the lower hinge seat (10) via the lower hinge arm positioning pin (901). The bottom end of the lower hinge arm (9) is rotatably connected to the lower hinge hole (803) on the inner end of the support block (8) via the lower hinge arm positioning pin (902).

8. A screen installation support according to claim 1, characterized in that: The supporting block (8) has a working opening (802) at the middle of its outer end.

9. A screen installation support according to claim 1, characterized in that: The hexagonal bolt (12) inside the step is located in the countersunk hole (1002) of the lower hinge seat (10) at the bottom end of the lower hinge seat (10).

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