Loosening prevention device for feeding pipe of disc separator

Abstract

The utility model discloses an anti-loosening device for a feeding pipe of a disc separator. The feeding pipe penetrates through a lower through hole and an upper through hole; a plurality of axial protruding parts are at least arranged at the position, corresponding to the lower through hole, of the feeding pipe, and the axial protruding parts are arranged in the length direction of the feeding pipe and evenly distributed on the outer wall of the feeding pipe. An axial limiting groove corresponding to the axial protruding part is formed in the inner wall of the lower through hole, so that the axial protruding part is inserted into the axial limiting groove in the axial direction, and the feeding pipe and the connector base are fixed in the circumferential direction. The feeding pipe and the connector base of the disc separator are optimized and improved, the structure of the middle portion of the feeding pipe is improved, the section of the middle portion of the feeding pipe is designed to be in a shape similar to a triangle, the arc-shaped notches are designed in the corresponding portions of the connector base, and the triangular shape of the feeding pipe is just clamped in the notches in the assembling process. Therefore, the feeding pipe and the connector base cannot rotate relatively, and the feeding pipe is prevented from rotating under the impact force of fluid.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of feed pipe anti-loose devices of disc separator. BACKGROUND

[0002] Disc separator is a high-speed sedimentation centrifuge, it rapidly separates "liquid-solid", "liquid-liquid-solid" and other mixtures by strong centrifugal force generated by high-speed rotation, due to its high efficiency separation, and high degree of automation, can realize from feeding, separation, slagging and other steps fully automatic operation, widely used in ship, food, medicine, chemical industry, textile and environmental protection and other industries. Drum is one of the most important components of disc separator, the solid-liquid separation process of material is carried out in drum, drum is usually composed of drum cover, drum body, piston, main lock ring, disc, distributor, vertical shaft nut and other parts. Material enters into the inside of separator from feed pipe, feed pipe is fixed on the shell;The clear liquid after separation is delivered by centrifugal pump, centrifugal pump is also fixed on the shell, high-speed rotating liquid enters the flow channel inside centrifugal pump, thereby being delivered.

[0003] From Figure 1 It can be seen that centrifugal pump is held by feed pipe and pressed on the shell, the upper part of feed pipe has thread, and locking nut is fixed on the shell by thread, the outer circle of feed pipe and the inner hole of joint seat are gap fit, thereby forming the material passing channel communicated upward to discharge pipe. High-speed rotating liquid always generates fluid impact force to centrifugal pump when entering centrifugal pump, (the impact force forms rotating torque to feed pipe), especially when feed appears fluctuation, the impact will be more serious, under the long-term impact, feed pipe rotation will cause locking nut loosening, once loosening will lead to the position of feed pipe and centrifugal pump to drop, and collision with high-speed rotating parts such as distributor joint, resulting in equipment failure, and seriously, it will also lead to feed pipe fracture, affect the production efficiency of site, according to field statistics, feed pipe of separator is prone to loosen after 6 months of use.

[0004] In view of the above, it is necessary to provide a disc separator feed pipe anti-loose device to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the defects in the prior art, and provides a disc separator feed pipe anti-loose device.

[0006] The utility model discloses a disc type separator feed pipe anti -looseness device, including rotary drum body, rotary drum cover, disc group, joint seat, feed pipe, centripetal pump, the feed pipe passes through joint seat and enters the distributor, and the discharge end of centripetal pump is communicated to the discharge pipe of joint seat by the circumferential gap between feed pipe and joint seat upward, and the upper end of feed pipe is worn out by joint seat upper end surface and fastens using lock nut, the joint seat includes lower through -hole, upper through -hole, discharge pipe, and lower through -hole sets up at the downside of discharge pipe, and upper through -hole sets up at the upside of discharge pipe, and feed pipe passes through lower through -hole, upper through -hole setting, at least in the feed pipe with lower through -hole corresponding place is equipped with a plurality of axial protruding portions, the axial protruding portion is arranged along the length direction of feed pipe, and evenly distributes on the outer wall of feed pipe, the inner wall of lower through -hole forms the axial limit slot corresponding with axial protruding portion, makes axial protruding portion insert into axial limit slot along the axial direction, makes feed pipe with joint seat circumferential fixed.

[0007] Further, the axial protruding portion is a wing plate extending in a radial direction in a rectangular shape; the axial limit slot is recessed on the inner wall surface of the lower through-hole, or a pair of protrusions are formed on the inner wall surface of the lower through-hole to form a stop bar, and the axial limit slot is formed between the two stop bars.

[0008] Further, the cross section of the feed pipe is in a rounded triangular shape, and three corners of the rounded triangular shape extend in the axial direction to form the axial protruding portions.

[0009] Further, the axial limit slot is an arc-shaped groove provided on the inner wall of the lower through-hole in the axial direction, and three arc-shaped grooves are provided in the circumferential direction, and the rounded edge portion of the axial protruding portion is clamped into the arc-shaped groove.

[0010] Further, the upper end surface of the joint seat is provided with a nut anti-loosening mechanism, the upper part of the lock nut is a prismatic portion, the lower side of the prismatic portion is provided with an outer ring ratchet portion, the nut anti-loosening mechanism includes an inner ring pawl portion, the inner ring pawl portion is provided with an arc-shaped inner wall close to the lock nut, and the arc-shaped inner wall is provided with a pawl structure.

[0011] Further, the inner ring pawl portion is movably connected to the upper end surface of the joint seat, and a control mechanism controls the inner ring pawl portion to move close to or away from the lock nut, and the inner ring pawl portion is unidirectionally locked on the lock nut when it is close to the lock nut.

[0012] Further, the inner ring pawl portion is rotatably connected to the joint seat, the upper end surface of the joint seat is provided with a first vertical shaft, one end of the inner ring pawl portion is rotatably connected to the first vertical shaft, and a control mechanism controls the other end of the inner ring pawl portion to rotate within a certain angle range around the first vertical shaft, and the pawl structure is controlled to move close to or away from the outer ring ratchet portion.

[0013] Furthermore, the control mechanism includes an elbow mechanism and a driving member. The elbow mechanism includes two connecting rods that are hinged to each other. The hinged ends of the two connecting rods are elbows. One end of the elbow mechanism is hinged to the second vertical shaft on the connector seat, and the other end is hinged to the inner ring pawl. The free end of the driving member is hinged to the elbow and drives the elbow mechanism to change between a V-shape and a straight line.

[0014] Furthermore, when the two links in the elbow mechanism are collinear, the two links are located at dead points.

[0015] The advantages and beneficial effects of this utility model are as follows: This utility model optimizes and improves the feed pipe and connector of the disc separator, inventing a feed pipe mechanism to prevent loosening. The structure of the middle part of the feed pipe is improved; its cross-section is designed in a triangular shape. An arc-shaped notch is designed at the corresponding location on the connector. During assembly, the triangular shape of the feed pipe fits perfectly into the notch, preventing relative rotation between the feed pipe and the connector, thus preventing the feed pipe from rotating under fluid impact. This effectively solves the loosening problem. After adopting this technical solution, through on-site operation for 18 consecutive months, no loosening failures occurred in the separator's feed pipe, and the equipment reliability increased by more than three times. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of a disc separator according to this utility model;

[0017] Figure 2 This is a schematic diagram of the longitudinal section of the connector seat in this utility model;

[0018] Figure 3 This is a cross-sectional schematic diagram of the feed pipe in this utility model;

[0019] Figure 4 This utility model Figure 3 The first schematic diagram of the AA section;

[0020] Figure 5 This is a schematic diagram of the feed pipe installed in the lower through hole in this utility model. Figure 1 ;

[0021] Figure 6 This is a schematic diagram of the feed pipe installed in the lower through hole in this utility model. Figure 2 ;

[0022] Figure 7 This utility model Figure 3 The second schematic diagram of section AA;

[0023] Figure 8 This is a schematic diagram of the feed pipe installed in the lower through hole in this utility model. Figure 3 ;

[0024] Figure 9 is the axial side view of the nut anti-loosening mechanism of the top of the joint seat in the utility model;

[0025] Figure 10 is the exploded view of the nut anti-loosening mechanism of the top of the joint seat in the utility model;

[0026] Figure 11 is the structural change schematic view of the nut anti-loosening mechanism in the utility model;

[0027] In the figure: 1, drum body; 2, drum cover; 3, disc group; 4, joint seat; 5, feed pipe; 6, centrifugal pump; 7, distributor; 8, circumferential gap; 9, discharge pipe; 10, locking nut; 11, lower through hole; 12, upper through hole; 13, axial protruding portion; 14, axial limiting groove; 15, wing plate; 16, baffle; 17, rounded triangle; 18, arc-shaped groove; 19, rounded edge portion; 20, nut anti-loosening mechanism; 21, prismatic portion; 22, outer ring ratchet portion; 23, inner ring pawl portion; 24, arc-shaped inner wall; 25, pawl structure; 26, control mechanism; 27, first vertical shaft; 28, toggle lever mechanism; 29, driving piece; 30, connecting rod; 31, elbow; 32, second vertical shaft. DETAILED DESCRIPTION

[0028] The specific embodiments of the utility model are further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model.

[0029] Example One:

[0030] A kind of disc separator feed pipe anti-loosening device, as shown in Figure 1 Figure, including drum body 1, drum cover 2, disc group 3, joint seat 4, feed pipe 5, centrifugal pump 6, the feed pipe 5 passes through joint seat 4 and enters distributor 7, the discharge end of centrifugal pump 6 is communicated to the discharge pipe 9 of joint seat 4 by the circumferential gap 8 between feed pipe 5 and joint seat 4 upwards, the upper end of feed pipe 5 is worn out by the upper end face of joint seat 4 and fastened using locking nut 10, it can be seen from Figure 1 , centrifugal pump 6 is held by feed pipe 5 and pressed on the shell, the upper part of feed pipe 5 is threaded, and locking nut 10 is fixed on the shell by thread, the outer circle of feed pipe 5 and the inner hole of joint seat 4 are gap fit, the gap fit is circumferential gap 8, so that the material of centrifugal pump 6 enters the discharge pipe 9 through the circumferential gap 8.

[0031] Specifically, as Figure 2As shown in the drawings, the joint base 4 includes a lower through hole 11, an upper through hole 12, and a discharge pipe 9; the lower through hole 11 is arranged on the lower side of the discharge pipe 9, the upper through hole 12 is arranged on the upper side of the discharge pipe 9, the feed pipe 5 passes through the lower through hole 11 and the upper through hole 12, and the feed pipe 5 is sealed at the upper through hole 12; in this embodiment, four axial protruding portions 13 are arranged at the position corresponding to the lower through hole 11 of the feed pipe 5, the axial protruding portions 13 are arranged along the length direction of the feed pipe 5, and are uniformly distributed on the outer wall of the feed pipe 5; specifically, as shown in the drawings, Figure 3 、 4 the axial protruding portion 13 is a wing plate 15 extending in a similar rectangular shape along the radial direction.

[0032] An axial limiting groove 14 corresponding to the axial protruding portion 13 is formed on the inner wall of the lower through hole 11, the axial protruding portion 13 is inserted into the axial limiting groove 14 along the axial direction, and the feed pipe 5 is fixed circumferentially with the joint base 4. As an embodiment, as shown in the drawings, Figure 5 the axial limiting groove 14 is recessed on the inner wall surface of the lower through hole 11, and as another embodiment, as shown in the drawings, Figure 6 or a blocking strip 16 is formed on the inner wall surface of the lower through hole 11 in pairs, and the axial limiting groove is formed between the two blocking strips 16. The two embodiments are similar, and the same axial protruding portion 13 structure is adopted, and the difference lies in the different setting structures of the axial limiting groove on the inner wall of the lower through hole 11,

[0033] Embodiment two:

[0034] In the first embodiment, the wing plate 15 extending in a similar rectangular shape along the radial direction has a relatively small thickness, although it has the function of limiting rotation, but the rotation speed of the rotating drum body 1 is relatively large, so that the outlet pump pressure generated by the centrifugal pump 6 is relatively large, and under the flow fluctuation, the wing plate 15 may still be deformed or damaged under the relatively large rotating stress; in order to enhance the structure.

[0035] Specifically, as shown in the drawings, Figure 7 the cross section of the feed pipe 5 is in the shape of a rounded triangle 17, and the three corners of the rounded triangle 17 extend along the axial direction to form the axial protruding portion 13. The axial protruding portion 13 in the shape of a triangle, and the root of the axial protruding portion 13 is connected to the feed pipe 5 to form a widened connection, thereby forming effective reinforcement to avoid deformation and damage under high pressure. Further, as shown in the drawings, Figure 8As shown, the axial limiting groove is an arc-shaped groove 18 arranged on the inner wall of the lower through hole 11 along the axial direction, three arc-shaped grooves 18 are arranged along the circumferential direction, and the fillet edge 19 of the axial protruding part 13 is clamped into the arc-shaped groove 18; during installation, the joint seat 4 is sleeved on the feed pipe 5 from top to bottom, and the three arc-shaped grooves 18 are arranged in position corresponding to the fillet edge 19, and after installation, the rotation of the feed pipe 5 is limited, so that the loosening of the locking nut 10 is avoided.

[0036] Example three:

[0037] In the foregoing examples, the problem of loosening of the locking nut 10 is solved by limiting the rotation of the feed pipe 5, and the loosening of the locking nut 10 can be improved when the feed pipe 5 does not rotate, but the vibration generated during the rotation of the separator can be directly transmitted to the locking nut 10 through the joint seat 4, so that the locking nut 10 still has the risk of loosening after a period of operation.

[0038] As an improvement, as shown in the drawings, Figures 9-11 The upper end surface of the joint seat 4 is provided with a nut anti-loosening mechanism 20, the upper part of the locking nut 10 is a prismatic part 21, the lower side of the prismatic part 21 is provided with an outer ring ratchet part 22, as shown in the drawings, Figure 10 During installation, a wrench can be clamped at the prismatic part 21, and in this embodiment, a hexagonal prism structure can be used, and the wrench can be used to tighten the locking nut 10, so that the feed pipe 5 is installed in position. The nut anti-loosening mechanism 20 includes an inner ring pawl part 23, and in this embodiment, the outer ring ratchet part 22 is arranged at the lower part of the locking nut 10, which forms a ratchet structure in combination with the inner ring pawl part 23. At the initial stage of installation, the outer ring ratchet part 22 is away from the locking nut 10, and after the bottom surface of the locking nut 10 is attached to the upper end surface of the joint seat 4, the inner ring pawl part 23 is attached to the outer ring ratchet part 22. The side close to the locking nut 10 of the inner ring pawl part 23 is provided with an arc-shaped inner wall 24 attached to the outer ring ratchet part 22, and the arc-shaped inner wall 24 is provided with a pawl structure 25; the teeth of the pawl structure 25 are lifted outward by a resilient member to one side of the outer ring ratchet part 22, and the inner ring pawl part 23 is attached to the locking nut 10 to lock it in one direction. Specifically, when the locking nut 10 is tightened, the pawl structure 25 will not be blocked until the locking nut 10 is tightened; during normal operation, the pawl structure 25 is clamped in the outer ring ratchet part 22, so that the locking nut 10 can be fixed, the locking nut 10 is prevented from rotating in the opposite direction, and the loosening of the locking nut 10 is avoided.

[0039] In order to facilitate the removal of the locking nut 10 in the case of overhaul, etc., the pawl structure 25 and the outer ring ratchet part 22 can be further unlocked, specifically, the inner ring pawl part 23 is movably connected to the upper end surface of the joint seat 4, and the inner ring pawl part 23 is controlled by the control mechanism 26 to move close to or away from the locking nut 10, when it is necessary to unlock, the inner ring pawl part 23 is controlled to move away from the locking nut 10, at this time, the pawl structure 25 is separated from the outer ring ratchet part 22, and the locking nut 10 can be removed using a wrench.

[0040] Specifically, as shown in Figure 10 , the inner ring pawl part 23 is rotatably connected to the joint seat 4, and the upper end surface of the joint seat 4 is provided with a first vertical shaft 27, one end of the inner ring pawl part 23 is rotatably connected to the first vertical shaft 27, and the other end of the inner ring pawl part 23 is controlled by the control mechanism 26 to rotate around the first vertical shaft 27 within a certain angle range, and the pawl structure 25 is controlled to move close to or away from the outer ring ratchet part 22. As shown in Figure 11 a, the inner ring pawl part 23 is attached to the outer ring ratchet part 22 to achieve one-way locking; when it is necessary to remove the locking nut 10, as shown in Figure 11 b, the inner ring pawl part 23 is rotated around the first vertical shaft 27, so that the inner pawl structure 25 is separated from the ratchet part, and the locking nut 10 can be easily removed.

[0041] Further, the inner ring pawl part 23 is controlled to rotate by the control mechanism 26, and the control mechanism 26 includes an elbow lever mechanism 28 and a driving member 29, the elbow lever mechanism 28 includes two connecting rods 30 hingedly connected to each other, the hinged ends of the two connecting rods 30 are elbows 31, one end of the elbow lever mechanism 28 is hingedly connected to a second vertical shaft 32 on the joint seat 4, and the other end is hingedly connected to the inner ring pawl part 23, the free end of the driving member 29 is hingedly connected to the elbow 31 and drives the elbow lever mechanism 28 to change between V-shaped and straight-shaped; as shown in Figure 11 , the change from a to b in the figure is that the straight shape is changed to the V shape, so that the inner ring pawl part 23 can be pulled away to achieve unlocking. When the two connecting rods 30 in the elbow lever mechanism 28 are collinear, the two connecting rods 30 are at the dead point position, as shown in Figure 11 a, the elbow 31 is pushed upward by the driving member 29 to make the two connecting rods 30 collinear to form a dead point, so that good support can be provided for the inner ring pawl part 23, and the inner ring pawl part 23 is prevented from loosening and retracting at this end.

[0042] The above is only the preferred embodiment of the present application, it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A kind of disc separator feed pipe anti-loose device, including rotary drum body (1), rotary drum cover (2), disc group (3), joint seat (4), feed pipe (5), centripetal pump (6), the feed pipe (5) passes through joint seat (4) into distributor (7) inside, the discharge end of centripetal pump (6) is communicated by the circumferential gap (8) between feed pipe (5) and joint seat (4) to the discharge pipe (9) of joint seat (4) upwards, the upper end of feed pipe (5) is worn out by the upper end surface of joint seat (4) and is fastened using lock nut (10);Its characterized in that, The joint base (4) comprises a lower through hole (11), an upper through hole (12) and a discharge pipe (9); the lower through hole (11) is arranged on the lower side of the discharge pipe (9), the upper through hole (12) is arranged on the upper side of the discharge pipe (9), and the feeding pipe (5) passes through the lower through hole (11) and the upper through hole (12); at least a plurality of axial protruding portions (13) are arranged at the position corresponding to the lower through hole (11) of the feeding pipe (5), the axial protruding portions (13) are arranged along the length direction of the feeding pipe (5) and are uniformly distributed on the outer wall of the feeding pipe (5); an axial limiting groove (14) corresponding to the axial protruding portion (13) is formed on the inner wall of the lower through hole (11), the axial protruding portion (13) is inserted into the axial limiting groove (14) along the axial direction, and the feeding pipe (5) is fixed to the joint base (4) in the circumferential direction.

2. A disc separator feed pipe anti-loosening device according to claim 1, characterized in that The axial protruding portion (13) is a wing plate (15) extending in a radial direction in a rectangular shape; the axial limiting groove (14) is formed by recessing the inner wall surface of the lower through hole (11) or forming a blocking strip (16) on the inner wall surface of the lower through hole (11) in a pair of protrusions, and the axial limiting groove is formed between the two blocking strips (16).

3. A feed tube anti-swing device for a disc separator according to claim 1, characterized in that The cross section of the feeding pipe (5) is in a rounded triangular shape (17), and three corners of the rounded triangular shape (17) extend in the axial direction to form the axial protruding portion (13).

4. A feed tube anti-oscillation device for a disc separator according to claim 3 wherein, The axial limiting groove is an arc-shaped groove (18) arranged on the inner wall of the lower through hole (11) in the axial direction, and the arc-shaped groove (18) is arranged in three in the circumferential direction, and the rounded edge portion (19) of the axial protruding portion (13) is clamped into the arc-shaped groove (18).

5. A feed tube anti-swing device for a disc separator according to claim 1, characterized in that The upper end surface of the joint base (4) is provided with a nut anti-loosening mechanism (20), the upper part of the locking nut (10) is a prismatic portion (21), the lower side of the prismatic portion (21) is provided with an outer ring ratchet portion (22), the nut anti-loosening mechanism (20) comprises an inner ring pawl portion (23), the inner ring pawl portion (23) is provided with an arc-shaped inner wall (24) close to the outer ring ratchet portion (22) on the side close to the locking nut (10), and the arc-shaped inner wall (24) is provided with a pawl structure (25).

6. A disc separator feed pipe anti-loosening device according to claim 5, characterized in that The inner ring pawl portion (23) is movably connected to the upper end surface of the joint base (4) and is controlled by a control mechanism (26) to move close to or away from the locking nut (10), and the inner ring pawl portion (23) is one-way locked when it is close to the locking nut (10).

7. A disc separator feed pipe anti-loosening device according to claim 6, characterized in that The inner ring pawl portion (23) is rotatably connected to the joint base (4), the upper end surface of the joint base (4) is provided with a first vertical shaft (27), one end of the inner ring pawl portion (23) is rotatably connected to the first vertical shaft (27), and the control mechanism (26) controls the other end of the inner ring pawl portion (23) to rotate around the first vertical shaft (27) within a certain angle range, so as to control the pawl structure (25) to move close to or away from the outer ring ratchet portion (22).

8. A disc separator feed pipe anti-loosening device according to claim 7, characterized in that The control mechanism (26) comprises an elbow lever mechanism (28) and a driving member (29), the elbow lever mechanism (28) comprises two mutually hinged connecting rods (30), the hinged ends of the two connecting rods (30) are elbows (31), one end of the elbow lever mechanism (28) is hinged to a second vertical shaft (32) on the joint base (4), the other end is hinged to the inner ring ratchet pawl (23), the free end of the driving member (29) is hinged to the elbow (31) and drives the elbow lever mechanism (28) to transform between V-shaped and straight-shaped.

9. A disc separator feed pipe anti-loosening device according to claim 8, characterized in that When the two connecting rods (30) in the elbow lever mechanism (28) are collinear, the two connecting rods (30) are located at dead point positions.

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