CN215862164U

CN215862164U - Quick-change hoop

Info

Publication number: CN215862164U
Application number: CN202122013052.0U
Authority: CN
Inventors: 张春东; 张恩志
Original assignee: Hebei Di Kai Pipeline Manufacturing Co ltd
Current assignee: Hebei Di Kai Pipeline Manufacturing Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-02-18
Anticipated expiration: 2031-08-25

Abstract

The utility model discloses a quick-change clamp which comprises an upper clamping block and a lower clamping block which are oppositely arranged, wherein the upper clamping block and the lower clamping block are arc-shaped rings smaller than a semicircle; sealing grooves are formed in the inner sides of the upper clamping block and the lower clamping block, and sealing rings are arranged in the sealing grooves; one end of the upper clamping block and one end of the lower clamping block are connected by a screw connection structure, and the other ends of the upper clamping block and the lower clamping block are connected by a hinge connection structure; fastening the upper and lower clamping blocks by a screw connection structure and a hinge structure so that opposite ends of the upper and lower clamping blocks move toward each other to be in contact; the pipe body can be quickly installed, the installation efficiency is high, the extrusion amount of the sealing ring during hoop installation can be reduced, water leakage caused by poor contact between the sealing ring and the pipeline is avoided, and the sealing effect is improved; the ring lip of the sealing ring can be prevented from being adhered to the inner peripheral surface of the sealing ring, and the lasting sealing performance is ensured; the material consumption of the rubber ring can be reduced, and the production cost is reduced; the excessive extrusion of the local position of the sealing ring caused by the mutual movement between the pipe body and the sealing ring can be avoided.

Description

Quick-change hoop

Technical Field

The utility model relates to a quick-change clamp, and belongs to the technical field of pipeline connection.

Background

The clamp is a connecting device for connecting pipe fittings, valves and pipeline fittings with grooves, the clamp is generally composed of two types, one type is a flexible clamp, the other type is a steel clamp, the traditional clamp is generally composed of two identical clamp bodies, rubber sealing rings and two sets of connecting bolts, the sealing of two pipe body interfaces is realized through the rubber sealing rings in the clamp, and the clamp with the structure has the following defects when being connected with two pipelines:

1. two sets of bolts need to be installed, so that time and labor are wasted, the installation speed is low, and the efficiency is low.

2. In the installation, the interval can appear in the tip of clamp, and when the clamp cover was fastened on the pipeline, the excessive compressive deformation of sealing washer can be followed the interval and is stuck out, easily causes the part section and the pipeline contact failure that the protruding portion of sealing washer corresponds, and leads to sealed the inefficacy, appears leaking the phenomenon.

3. The existing hoop is not used for a long time after being installed, a rubber sealing ring is aged gradually, a ring lip part on the rubber sealing ring is extruded with the inner peripheral surface of the rubber sealing ring under the extrusion of a pipe body to be adhered (rubber self-solubility), and fluid cannot flow between the ring lip and a rubber ring body, so that the ring lip loses the sealing property and causes leakage.

4. The sealing ring in the existing clamp hoop is made of more materials and has high production cost.

5. After the existing hoop is installed, the end positions of the two pipe bodies are uncertain, and the pipe bodies and the sealing ring support have the phenomenon of mutual movement, so that the local position of the sealing ring is excessively extruded and deformed, and leakage is caused.

In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the defects are overcome, and provides a quick-change hoop which can achieve the following purposes:

1. can realize the quick installation of body, labour saving and time saving, the installation effectiveness is high, convenient and fast.

2. The extrusion amount of the sealing ring during hoop installation can be effectively reduced, water leakage caused by poor contact between the sealing ring and the pipeline due to excessive extrusion deformation is avoided, and the sealing effect is improved;

3. the ring lip part of the sealing ring can be effectively prevented from being extruded together with the inner peripheral surface of the sealing ring to cause adhesion, and the lasting sealing property is ensured;

4. the material consumption of the rubber ring can be reduced, and the production cost is reduced.

5. The end positions of the two pipe bodies can be effectively positioned, excessive extrusion of the local positions of the sealing rings caused by mutual movement between the pipe bodies and the sealing rings is effectively avoided, and the sealing effect and the sealing durability are improved.

In order to solve the technical problems, the utility model adopts the following technical scheme: a quick-change hoop comprises an upper clamping block and a lower clamping block which are oppositely arranged, wherein the upper clamping block and the lower clamping block are arc-shaped rings smaller than a semicircle; sealing grooves are formed in the inner sides of the upper clamping block and the lower clamping block, and sealing rings are arranged in the sealing grooves;

one end of the upper clamping block and one end of the lower clamping block are connected by a screw connection structure, and the other ends of the upper clamping block and the lower clamping block are connected by a hinge connection structure; the upper and lower clamping blocks are fastened by a screw coupling structure and a hinge structure such that opposite ends of the upper and lower clamping blocks are moved toward each other to be in contact.

Further, the sealing ring comprises a sealing ring body, side walls are arranged at two ends of the sealing ring body, and ring lips are arranged on the inner edges of the side walls; an annular bulge is arranged at the center of the inner circumferential surface of the sealing ring body; the outer peripheral surface of the sealing ring body is provided with two annular grooves, and the annular grooves are arranged corresponding to the positions between the annular lips and the annular bulges.

Further, gaps are arranged at the opposite ends of the upper clamping block and the lower clamping block, and the gaps are gradually increased from the connection of a hinge structure to the connection of a screw structure.

Furthermore, the central line of the upper clamping block deviates downwards from the lower end surface of the upper clamping block, and the central line of the lower clamping block deviates upwards from the upper end surface of the lower clamping block;

when the clamp is in a fastening state, the central lines of the upper clamping block and the lower clamping block deviate from the axial line of the connected pipe fitting.

Further, the hinge structure includes a hinge shaft and an arc-shaped hook; the hinge shaft is arranged at the end part of the connecting rib plates, the number of the connecting rib plates is two, and the two connecting rib plates are respectively arranged at the two sides of the end part of the lower clamping block; the arc-shaped hook is arranged at the end part of the connecting arm, and the connecting arm is arranged at the center of the end part of the upper clamping block.

Furthermore, the screw connection structure comprises an upper lug arranged on the upper clamping block and a lower lug arranged on the lower clamping block, and the upper lug and the lower lug are provided with coaxial bolt holes; bolts penetrate through the bolt holes, and nuts are screwed and fixed at the other ends of the bolts to fasten the upper clamping block and the lower clamping block.

Furthermore, clamping blocks are respectively arranged at two ends of the lower side of the upper convex block, clamping grooves are respectively arranged at two ends of the upper side of the lower convex block, which correspond to the clamping blocks, and the clamping blocks are clamped in the clamping grooves;

the end surface of the clamping block is flush with the end surface of the upper lug; the clamping groove extends inwards along the end face of the lower protruding block.

Further, a hole is formed between the two connecting rib plates and the hinge shaft; the width of the connecting arm is smaller than that of the hole; the connecting arm is inserted into the hole and hooks the arc-shaped hook on the hinge shaft; the arc hook and the hinge shaft can rotate relatively.

Further, the side wall and the sealing ring body are connected into a whole; the ring lip extends towards the width center direction of the sealing ring body; the ring lip is connected with the side wall into a whole; the contour line of the inner peripheral surface of the ring lip is arranged at an acute angle with the axial lead of the sealing ring body.

Furthermore, the upper clamping block and the lower clamping block are oppositely arranged to form an inner space; the central axis of the inner space is collinear with the axis of the connected pipe body.

After the technical scheme is adopted, compared with the prior art, the utility model has the following advantages:

1. the pipe body can be rapidly installed, compared with the existing hoop, the installation speed is improved by 1.5-3 times, the installation efficiency is high, and the pipe body is convenient and rapid.

2. The utility model can effectively reduce the extrusion amount of the sealing ring when the hoop is installed, avoid water leakage caused by poor contact between the sealing ring and the pipeline due to excessive extrusion deformation, and improve the sealing effect;

3. the utility model can effectively avoid the adhesion of the ring lip part of the sealing ring and the inner peripheral surface of the sealing ring caused by extrusion, and ensure the lasting sealing property;

4. the utility model can reduce the material consumption of the rubber ring and reduce the production cost.

5. The utility model can effectively position the end parts of the two pipe bodies, effectively avoid the excessive extrusion of the local position of the sealing ring caused by the mutual movement between the pipe bodies and the sealing ring, and improve the sealing effect and the sealing durability.

6. The sealing duration time of the installed hoop is increased by 1.5-2 times compared with that of the hoop in the prior art, and the service life of the hoop is prolonged.

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial view of the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is a cross-sectional view of the present invention;

FIG. 5 is a schematic view of an upper clamp block;

FIG. 6 is a cross-sectional view of the upper clamp block;

FIG. 7 is a schematic view of a lower clamp block;

FIG. 8 is a top view of the lower clamp block;

FIG. 9 is a cross-sectional view of the lower clamp block;

fig. 10 is a schematic view of a seal ring.

In the figure, the position of the upper end of the main shaft,

1-upper clamping block, 2-lower clamping block, 3-sealing ring, 31-sealing ring body, 32-side wall, 33-ring lip, 34-annular groove, 35-annular protrusion, 4-sealing groove, 5-annular table, 6-hinge shaft, 7-connecting rib plate, 8-hole, 9-connecting arm, 10-arc hook, 11-upper protrusion, 12-lower protrusion, 13-bolt, 14-nut, 15-fixture block and 16-fixture groove.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.

Example 1

As shown in fig. 1-10, the present invention provides a quick change clamp, which includes an upper clamping block 1 and a lower clamping block 2, wherein both the upper clamping block 1 and the lower clamping block 2 are arc rings smaller than a semicircle, the upper clamping block 1 and the lower clamping block 2 are oppositely disposed to form an inner space, and the inner space is used for placing a tube body; the central axis of the inner space is collinear with the axis of the connected pipe body; the opposite ends of the upper clamping block 1 and the lower clamping block 2 are provided with gaps to ensure that the pipe fitting is smoothly inserted into the inner space.

One ends of the upper clamping block 1 and the lower clamping block 2 are connected by adopting a threaded connection structure, and the other ends of the upper clamping block 1 and the lower clamping block 2 are connected by adopting a hinge structure; the upper and lower clamping blocks 1 and 2 are fastened by a screw connection structure and a hinge structure so that opposite ends of the upper and lower clamping blocks 1 and 2 are moved toward each other to be in contact, completing the installation of the band clamp.

Further, the gap between the upper clamping block 1 and the lower clamping block 2 is gradually increased from the connection by adopting a hinged structure to the connection by adopting a screwed structure.

The arc-shaped central line of the upper clamping block 1 deviates downwards than the lower end surface of the upper clamping block 1, and the arc-shaped central line of the lower clamping block 2 deviates upwards than the upper end surface of the lower clamping block 2; when the clamp is in a fastening state, the central lines of the upper clamping block 1 and the lower clamping block 2 deviate from the axial line of the connecting pipe fitting.

The hinge structure comprises two connecting rib plates 7 arranged on two sides of the end part of the lower clamping block 2, the two connecting rib plates 7 are arranged at intervals, a hinge shaft 6 is arranged at the end part of each connecting rib plate 7, and the axis of each hinge shaft 6 is parallel to the axis of the corresponding hoop; a hole 8 is formed between the two connecting rib plates 7 and the hinge shaft 6.

The hinge structure further comprises a connecting arm 9 arranged at the center of the end part of the upper clamping block 1, and the width of the connecting arm 9 is smaller than that of the hole 8 so as to ensure that the connecting arm can be smoothly inserted into the hole 8. An arc-shaped hook 10 is arranged at the end part of the connecting arm 9, and the arc-shaped hook 10 is matched with the hinge shaft 6; when the device is installed, the connecting arm of the upper clamping block is inserted into the hole 8 of the lower clamping block, the arc-shaped hook 10 is hooked on the hinge shaft 6, and the arc-shaped hook 10 and the hinge shaft 6 can rotate relatively.

The bolt connection structure comprises an upper convex block 11 arranged on the upper clamping block 1 and a lower convex block 12 arranged on the lower clamping block 2, wherein coaxial bolt holes are formed in the upper convex block 11 and the lower convex block 12, bolts 13 penetrate through the bolt holes, and nuts 14 are screwed and fixed at the other end.

Further, in order to avoid the dislocation of the opposite ends of the upper clamping block 1 and the lower clamping block 2 and improve the aligning speed of the opposite ends of the upper clamping block 1 and the lower clamping block 2 in the installation process, a clamping block 15 is arranged on the lower side of the upper protruding block 11, a clamping groove 16 is arranged on the upper side of the lower protruding block 12 corresponding to the clamping block 15, and the clamping block 15 is clamped into the clamping groove 16.

The two clamping blocks 15 and the two clamping grooves 16 are respectively arranged at two ends of the lower side of the upper convex block 11, and the end surfaces of the clamping blocks 15 are flush with the end surface of the upper convex block 11; the two clamping grooves 16 are respectively arranged at two ends of the upper side of the lower convex block 12, and the clamping grooves 16 extend inwards along the end face of the lower convex block 12; the two ends of the upper convex block 11 and the lower convex block 12 are provided with clamping positioning structures, so that the positioning accuracy of the upper clamping block 1 and the lower clamping block 2 is further improved, the dislocation is avoided, and the installation speed is improved.

Go up

clamp splice

1 and 2 inboards of lower clamp splice are close to both ends department and are equipped with annular table 5, joint in the slot of slot pipe fitting when annular table 5 is used for the installation.

A sealing groove 4 is formed in the middle of the inner sides of the upper clamping block 1 and the lower clamping block 2, a sealing ring 3 is arranged in the sealing groove 4, the sealing ring 3 comprises a sealing ring body 31, the sealing ring body 31 is of a circular structure, side walls 32 are arranged at two ends of the sealing ring body 31, and the side walls 32 are of an annular structure; the side wall 32 and the sealing ring body 31 are connected into a whole; the inner edge of the side wall 32 is provided with an annular lip 33; the ring lip 33 extends in the width center direction of the seal ring body 31; the annular lip 33 is connected with the side wall 32 into a whole; the contour line of the inner peripheral surface of the ring lip 33 and the axial lead of the seal ring body 31 are arranged in an acute angle.

The central position of the inner peripheral surface of the sealing ring body 31 is provided with an annular bulge 35, when the sealing ring is installed, the end surface of the annular bulge 35 is abutted against the end part of the pipe body, and the sealing ring has the function of positioning the end part of the pipe body; the height of the annular protrusion 35 is not higher than the inner wall of the connected pipe body, so that the annular protrusion does not extend into the pipe body.

The outer circumferential surface of the sealing ring body 31 is provided with two annular grooves 34, and the annular grooves 34 are arranged corresponding to the positions between the annular lip 33 and the annular bulge 35; during installation, when the upper clamping block and the lower clamping block are fastened, the annular groove 34 can absorb deformation of the sealing ring 3 caused by extrusion, water leakage caused by poor contact between the sealing ring and a pipeline due to excessive extrusion deformation is avoided, and adhesion caused by extrusion of the annular lip and the inner peripheral surface of the sealing ring body can be avoided.

One end of the hoop is connected by a hinge structure, the other end of the hoop is connected by a screw structure, and one end of the hoop adopting the screw structure is also provided with a clamping and positioning structure, so that a pipe body can be quickly installed, compared with the existing hoop, the installation speed is improved by 1.5-3 times, the installation efficiency is high, the installation is convenient and quick, the upper clamping block and the lower clamping block are prevented from being dislocated, and the alignment speed is high.

The arrangement of the annular groove on the outer peripheral surface of the sealing ring can absorb the extrusion amount of the sealing ring during installation and fastening, and when the hoop is sleeved on a pipeline for fastening, the water leakage phenomenon caused by poor contact between the sealing ring and the pipeline due to the fact that the sealing ring is excessively pressed and deformed and protrudes out of the interval of the end part of the hoop is avoided, and the sealing effect is improved;

the annular groove is arranged and corresponds to the position between the annular lip 33 and the annular bulge 35, so that the annular lip part of the sealing ring can be effectively prevented from being extruded together with the inner peripheral surface of the sealing ring to cause adhesion after installation, and the lasting sealing property is ensured;

the arrangement of the annular groove can reduce the material consumption of the sealing ring and reduce the production cost.

The annular bulges arranged on the inner peripheral surface of the sealing ring can effectively position the end parts of the two pipe bodies, effectively avoid the excessive extrusion of the local position of the sealing ring caused by the mutual movement between the pipe bodies and the sealing ring, and improve the sealing effect and the sealing durability.

The sealing duration time of the installed hoop is increased by 1.5-2 times compared with that of the hoop in the prior art, and the service life of the hoop is prolonged.

The foregoing is illustrative of the best mode of the utility model and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The scope of the present invention is defined by the appended claims, and any equivalent modifications based on the technical teaching of the present invention are also within the scope of the present invention.

Claims

1. The utility model provides a quick change clamp, includes relative last clamp splice (1) and lower clamp splice (2) that set up, its characterized in that: the upper clamping block (1) and the lower clamping block (2) are both arc-shaped rings smaller than a semicircle; sealing grooves (4) are formed in the inner sides of the upper clamping block (1) and the lower clamping block (2), and sealing rings (3) are arranged in the sealing grooves (4);

one end of the upper clamping block (1) is connected with one end of the lower clamping block (2) by a screw connection structure, and the other end of the upper clamping block is connected with the other end of the lower clamping block by a hinge connection structure; the upper and lower clamping blocks (1, 2) are fastened by a screw connection structure and a hinge connection structure such that opposite ends of the upper and lower clamping blocks (1, 2) are moved toward each other to be in contact.

2. A quick-change clamp according to claim 1, wherein: the sealing ring (3) comprises a sealing ring body (31), two ends of the sealing ring body (31) are provided with side walls (32), and the inner edge of each side wall (32) is provided with a ring lip (33); an annular bulge (35) is arranged at the center of the inner circumferential surface of the sealing ring body (31); the outer peripheral surface of the sealing ring body (31) is provided with two annular grooves (34), and the annular grooves (34) are arranged corresponding to the positions between the annular lip (33) and the annular bulge (35).

3. A quick-change clamp according to claim 1, wherein: the opposite ends of the upper clamping block (1) and the lower clamping block (2) are provided with gaps, and the gaps are gradually increased from the connection by adopting a hinged structure to the connection by adopting a screwed structure.

4. A quick-change clamp according to claim 1, wherein: the center line of the upper clamping block (1) deviates downwards compared with the lower end surface of the upper clamping block (1), and the center line of the lower clamping block (2) deviates upwards compared with the upper end surface of the lower clamping block (2);

when the clamp is in a fastening state, the central lines of the upper clamping block (1) and the lower clamping block (2) deviate from the axis line of the connected pipe fitting.

5. A quick-change clamp according to claim 1, wherein: the hinge structure comprises a hinge shaft (6) and an arc-shaped hook (10); the hinge shaft (6) is arranged at the end part of the connecting rib plates (7), the number of the connecting rib plates (7) is two, and the two connecting rib plates (7) are respectively arranged at the two sides of the end part of the lower clamping block (2); the arc-shaped hook (10) is arranged at the end part of the connecting arm (9), and the connecting arm (9) is arranged at the center of the end part of the upper clamping block (1).

6. A quick-change clamp according to claim 1, wherein: the bolt connection structure comprises an upper convex block (11) arranged on the upper clamping block (1) and a lower convex block (12) arranged on the lower clamping block (2), and the upper convex block (11) and the lower convex block (12) are provided with coaxial bolt holes; bolts (13) penetrate through the bolt holes, and nuts (14) are screwed and fixed at the other ends of the bolts to fasten the upper clamping block (1) and the lower clamping block (2).

7. A quick-change clamp according to claim 6, wherein: clamping blocks (15) are respectively arranged at two ends of the lower side of the upper protruding block (11), clamping grooves (16) are respectively arranged at two ends of the upper side of the lower protruding block (12) corresponding to the clamping blocks (15), and the clamping blocks (15) are clamped in the clamping grooves (16);

the end surface of the clamping block (15) is flush with the end surface of the upper convex block (11); the clamping groove (16) extends inwards along the end face of the lower protruding block (12).

8. A quick-change clamp according to claim 5, wherein: a hole (8) is formed between the two connecting rib plates (7) and the hinge shaft (6); the width of the connecting arm (9) is smaller than that of the hole (8); the connecting arm (9) is inserted into the hole (8) and hooks the arc-shaped hook (10) on the hinge shaft (6); the arc-shaped hook (10) and the hinge shaft (6) can rotate relatively.

9. A quick-change clamp according to claim 2, wherein: the side wall (32) and the sealing ring body (31) are connected into a whole; the ring lip (33) extends towards the width center direction of the sealing ring body (31); the ring lip (33) is connected with the side wall (32) into a whole; the contour line of the inner peripheral surface of the ring lip (33) and the axial lead of the sealing ring body (31) are arranged in an acute angle.

10. A quick-change clamp according to claim 1, wherein: the upper clamping block (1) and the lower clamping block (2) are oppositely arranged to form an inner space; the central axis of the inner space is collinear with the axis of the connected pipe body.