Pressure reduction clamp

Abstract

The utility model relates to the technical field of clamps, in particular to a pressure reduction clamp. Comprising two clamp bodies, fixing parts which can be fixedly connected through a fixing mechanism are fixedly installed at the two ends of each clamp body, and sealing rings are installed on the inner sides of the clamp bodies. A pressure reducing plate is fixedly installed on the inner side of the sealing ring, and a pressure reducing hole is formed in the middle of the pressure reducing plate. By means of the structure, when liquid in the pipeline flows through the pressure reducing holes, a channel becomes smaller, so that the flow is reduced when the liquid flows into the middle transition pipeline, the pressure in the transition pipeline is reduced, then the liquid flows into the pipeline with the small pipe diameter from the transition pipeline, the pressure in the pipeline with the small pipe diameter is reduced, and the pressure in the pipeline with the small pipe diameter is reduced. And the overall stability of the pipeline is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, and particularly relates to a pressure-reducing clamp. Background Art

[0002] Clamp connection is also known as grooved connection. The clamp-type connector connection can be used for galvanized steel pipes or steel-plastic composite pipes with a diameter greater than or equal to 100m in systems such as fire protection water, air-conditioning chilled and hot water, water supply, and rainwater. It has the characteristics of simple operation, not affecting the original characteristics of the pipeline, construction safety, good system stability, convenient maintenance, labor-saving and time-saving, etc.

[0003] In the use scenario of the clamp, the use state of pipe diameter reduction is often encountered, such as the connection of a thicker pipe and a thinner pipe. In the prior art, ordinary clamps are directly used for fixation. However, when the pipe diameter becomes smaller, the pressure borne by the smaller-diameter part of the pipe will increase, which will affect the stability of the pipe connection. Content of the Utility Model

[0004] In view of the above problems, the utility model provides a pressure-reducing clamp to solve the problem that the pressure borne by the pipe increases due to the reduction of the pipe diameter in the prior art, thereby affecting the stability of the pipe connection.

[0005] The utility model is realized by the following technical solutions: A pressure-reducing clamp includes two clamp bodies. Fixed parts that can be fixedly connected by a fixing mechanism are fixedly installed at both ends of the clamp body. A sealing ring is installed inside the clamp body; a pressure-reducing plate is fixedly installed inside the sealing ring, and at least one pressure-reducing hole is opened on the pressure-reducing plate.

[0006] Through the above structure, when the liquid in the pipeline flows through the pressure-reducing hole, the channel becomes smaller, so the flow rate decreases when flowing into the intermediate transition pipeline, thereby reducing the pressure in the transition pipeline. Then, it flows from the transition pipeline into the pipeline with a smaller diameter, thereby reducing the pressure in the pipeline with a smaller diameter and improving the overall stability of the pipeline.

[0007] Furthermore, a connecting part is provided in the middle of the inner side of the sealing ring, a connecting groove is provided inside the connecting part, the outer side of the pressure-reducing plate is embedded in the connecting groove, and the pressure-reducing plate abuts against the connecting part. Through the above structure, the connection between the pressure-reducing plate and the sealing ring is more convenient, and after the pipeline is installed, the pipeline will also squeeze the connecting part, making the installation of the pressure-reducing plate more stable.

[0008] Furthermore, a number of first reinforcing ribs are evenly arranged on the outer side of the clamp body, and a second reinforcing rib is arranged at the connection between the clamp body and the fixing part. Through the above structure, the clamp body can be more stable when connecting the pipeline; by strengthening its own structure, the service life of the device is improved.

[0009] Furthermore, the fixing mechanism can pass through the fixing columns of two opposite fixing parts. A threaded column is fixedly installed at the top of the fixing column, and a nut is in threaded cooperation with the threaded column. The nut can abut against the upper surface of the upper fixing part; a limiting mechanism that can abut against the lower surface of the lower fixing part is installed at the bottom of the fixing column. Through the cooperation of the nut and the limiting mechanism, the fixing mechanism clamps the two opposite fixing parts in the middle, so as to achieve the effect of fixing the two clamp bodies.

[0010] Furthermore, the limiting mechanism includes a limiting plate that can slide in the inner and outer directions of the fixing column. The limiting plate is slidably matched with the bottom of the fixing column, and the limiting plate can abut against the fixing part. By spreading the limiting plate outwards to abut against the fixing part and the nut to abut against another fixing part to achieve the fixing effect, and then by retracting the limiting plate to remove the fixing mechanism, the fixing mechanism in the device is more convenient to use.

[0011] Furthermore, a connecting column is fixedly installed at the bottom of the fixing column. A pressing sleeve is coaxially slidably connected to the connecting column. The pressing sleeve is located below the limiting plate. The inner side of the limiting plate is wedge-shaped, and the limiting plate is matched with the pressing sleeve. When the pressing sleeve moves upwards, the limiting plate slides towards the outside of the fixing column. By squeezing the pressing sleeve to control the expansion and retraction of the limiting plate, the operation of the user is more convenient.

[0012] Furthermore, a fixing sleeve is fixedly installed coaxially at the bottom of the connecting column. The pressing sleeve is located between the fixing sleeve and the connecting column. The limiting plate is located between the fixing column and the fixing sleeve. Both the pressing sleeve and the limiting plate are slidably matched with the pressing sleeve; a number of push rods are fixedly installed at the bottom of the pressing sleeve. The end of the push rod away from the pressing sleeve can pass through the fixing sleeve and extend below the fixing sleeve. Through the design of the fixing sleeve, the pressing sleeve can be stably installed on the connecting column.

[0013] Further, an installation groove is provided on the push rod. A first spring is fixedly installed on the inner wall of the installation groove. One end of the first spring away from the inner wall of the installation groove is fixedly connected with a limit block, and the limit block is slidably matched with the installation groove; a limit hole is provided on the fixed sleeve, and a reset block is slidably installed in the limit hole. When the extrusion sleeve is at the uppermost position, the limit block is inserted into the limit hole. Through the design of the limit hole and the limit block, the limit plate can be prevented from retracting when it is unfolded, so that the fixing effect is better and the device is more stable.

[0014] Further, a second spring is fixedly installed at the bottom end of the extrusion sleeve, and one end of the second spring away from the extrusion sleeve is fixedly connected with the bottom of the fixed sleeve. Through the design of the second spring, when the limit block disengages from the limit hole, the extrusion sleeve can be driven by the second spring to retract downward.

[0015] Further, a bolt head is fixedly installed at the end of the threaded column away from the fixed column. Through the design of the bolt head, the nut can be prevented from disengaging from the threaded column upward.

[0016] In summary, the beneficial effects of the present utility model are as follows:

[0017] 1. Through the design of the pressure relief plate and the pressure relief hole, the fluid in the pipeline can reduce the pressure in the pipeline when flowing through the pressure relief hole to reach the buffer pipe, and then the fluid can maintain the pressure in the pipeline with a smaller diameter when flowing into the pipeline with a smaller diameter, thereby improving the overall connection stability of the pipeline.

[0018] 2. Through the design of the fixing mechanism and the limiting mechanism, the fixing mechanism in the device does not need to be disassembled like the bolt and nut fixing method, but only needs an integral fixing mechanism for fixing, which is convenient to use and further improves the installation efficiency of the clamp body. Description of the Drawings

[0019] Figure 1 is the overall structural schematic diagram of a pressure relief clamp of the present utility model;

[0020] Figure 2 is the front view of the present utility model (without the fixing mechanism);

[0021] Figure 3 is Figure 2 the cross-sectional view at the position of "A - A" in

[0022] Figure 4 is the front view of the fixing mechanism in the present utility model;

[0023] Figure 5 is the internal structural schematic diagram of the limiting mechanism in the present utility model;

[0024] Figure 6 is Figure 4 a sectional view taken along the position “B - B” in

[0025] Figure 7 is Figure 6 a locally enlarged view of the area “C” in

[0026] In the figure: 1 - clamp body; 11 - first reinforcing rib; 12 - second reinforcing rib; 13 - fixing part; 2 - fixing mechanism; 21 - bolt head; 22 - threaded post; 23 - nut; 24 - fixing post; 25 - limiting mechanism; 251 - limiting plate; 252 - push rod; 253 - fixing sleeve; 254 - reset block; 255 - connecting post; 256 - extrusion sleeve; 257 - limiting block; 258 - first spring; 259 - second spring; 3 - sealing ring; 31 - pressure - reducing plate; 32 - pressure - reducing hole; 33 - connecting part. Specific Embodiments

[0027] The following will further describe in detail the specific embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0028] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms “center”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0029] The following is a description of the preferred embodiments of the present utility model in conjunction with the drawings.

[0030] As Figure 1 , Figure 2 , Figure 3 shown, the present utility model provides a pressure - reducing clamp, including two semi - circular clamp bodies 1 with matching shapes. Both ends of the clamp body 1 extend away from the clamp body 1 to form fixing parts 13. The fixing parts 13 on the same side of the two clamp bodies 1 can be fixed to each other through a fixing mechanism 2. Assembling the clamp body 1 can be completed by fixing the fixing parts 13 on both sides. A sealing ring 3 is installed inside the clamp body 1, and a pressure - reducing plate 31 is fixedly installed inside the sealing ring 3. At least one pressure - reducing hole 32 is opened on the pressure - reducing plate 31. Among them, the pressure - reducing plate 31 is a circular plate. When the number of pressure - reducing holes 32 is one, the best position for opening the pressure - reducing hole 32 is at the center of the pressure - reducing plate 31, that is, at this time, the center lines of the sealing ring 3, the pressure - reducing plate 31, and the pressure - reducing hole 32 are the same.

[0031] Specifically, a connection portion 33 is provided in the middle of the inner side of the sealing ring 3, a connection groove opening inward is provided in the middle of the connection portion 33, the outer side of the pressure relief plate 31 is embedded in the connection groove, and the front and rear sides of the pressure relief plate 31 abut against the front and rear side walls of the pressure relief groove. It can be understood here that the pressure relief plate 31 is inserted into the pressure relief groove, and when the pipeline is installed, the butt joint of the pipeline firmly abuts against the front and rear sides of the sealing ring 3, thereby firmly abutting the pressure relief plate 31, thereby achieving the fixation of the pressure relief plate 31.

[0032] In addition, since the device adds a pressure relief plate 31, the width of the clamp body 1 and the sealing ring 3 in the device in the front-to-back direction are wider than the existing ones. The increased width is at least the width of the connecting part 33, and the specific width should be set according to actual conditions.

[0033] As a further illustration of this example, a plurality of first reinforcing ribs 11 are evenly arranged on the outside of the clamp body 1, and a second reinforcing rib 12 is arranged at the connection between the clamp body 1 and the fixing portion 13. Through the design of the first reinforcing ribs 11 and the second reinforcing ribs 12, the strength of the clamp body 1 itself and the strength of the connection between the clamp body 1 and the fixing portion 13 are improved, thereby making the clamp body 1 more stable and increasing the service life of the device.

[0034] like Figure 4 As shown, the fixing mechanism 2 in the present device can be any mechanism that can fix the two fixing parts 13 together, such as a combination of a bolt and a nut sleeve. However, since the combination of the bolt and the nut sleeve needs to be disassembled and reassembled when used, it is very inconvenient to use, which affects the installation efficiency of the clamp body 1. Therefore, the fixing structure in the present device adopts an integrated structure, including a fixing column 24 that can pass through the two fixing parts 13, a threaded column 22 is fixedly installed on the top of the fixing column 24, and a nut 23 is threadedly matched on the threaded column 22. The diameter of the fixing column 24 is greater than that of the threaded column, so that the nut 23 cannot be separated from the threaded column 22 from the bottom of the threaded column 22. In order to prevent the nut 23 from being separated from the top of the threaded column 22, a bolt head 21 is added to the top of the threaded column 22, and the diameter of the bolt head 21 is greater than that of the threaded column 22.

[0035] At the bottom of the fixed column 24, a limiting mechanism 25 capable of expanding and retracting is installed. When the limiting mechanism 25 retracts, the limiting mechanism 25 can pass through the mounting hole on the fixed part 13. When the limiting mechanism 25 expands, the diameter of the expanded part of the limiting mechanism 25 is larger than the mounting hole on the fixed part 13, that is, the limiting mechanism 25 can no longer pass through the fixed part 13. When in use, first retract the limiting mechanism 25, pass it through the fixed part 13, so that the limiting mechanism 25 and the nut 23 are located on both sides of a group of fixed parts 13. Then expand the limiting mechanism 25, press the expanded part of the limiting mechanism 25 against the fixed part 13 to fix the fixed column 24. Then twist the nut 23 to make it abut against the other side of the fixed part 13 to complete the fixation of the clamp body 1.

[0036] As Figure 5 , Figure 6 , Figure 7 shown, the limiting mechanism 25 in this device includes a connecting column 255 fixedly installed at the bottom of the fixed column 24. The diameter of the connecting column 255 is much smaller than the diameter of the fixed column 24. A limiting plate 251 is also slidably installed at the bottom of the fixed column 24. The sliding connection mode between the limiting plate 251 and the fixed column 24 is a T-shaped chute and slider connection mode, and limits are added at both ends of the chute to prevent the limiting plate 251 from falling off. This connection mode belongs to conventional prior art, so no more details will be described here.

[0037] There are four limiting plates 251. When they are retracted, they form a circular ring coaxial and of the same diameter as the fixed column 24. The inner side of the limiting plate 251 is wedge-shaped. Below the limiting plate 251, a circular ring-shaped pressing sleeve 256 is slidably installed coaxially on the connecting column 255. The upper surface of the pressing sleeve 256 cooperates with the wedge-shaped surface of the limiting plate 251. When the pressing sleeve 256 moves upward, the limiting plate 251 moves outward.

[0038] At the bottom end of the connecting column 255, a fixing sleeve 253 is also coaxially and fixedly installed. The extrusion sleeve 256 is located between the fixing sleeve 253 and the connecting column 255. The limiting plate 251 is located between the fixing column 24 and the fixing sleeve 253. Both the extrusion sleeve 256 and the limiting plate 251 are slidably engaged with the extrusion sleeve 256. At the bottom end of the extrusion sleeve 256, a number of push rods 252 are also fixedly installed. One end of the push rod 252 away from the extrusion sleeve 256 can pass through the fixing sleeve 253 and extend below the fixing sleeve 253. An installation groove is provided on the push rod 252. The inner wall of the installation groove is fixedly installed with a first spring 258. One end of the first spring 258 away from the inner wall of the installation groove is fixedly connected with a limiting block 257. The limiting block 257 is slidably engaged with the installation groove. A limiting hole is provided on the fixing sleeve 253. A reset block 254 is slidably installed in the limiting hole. The limiting block 257 can be inserted into the limiting hole. At the bottom end of the extrusion sleeve 256, a second spring 259 is also fixedly installed. One end of the second spring 259 away from the extrusion sleeve 256 is fixedly connected to the bottom of the fixing sleeve 253.

[0039] When it is necessary to deploy the limiting mechanism 25, only need to press the push rod 252. The second spring 259 is stretched. The push rod 252 squeezes the limiting plate 251 outwards. When the limiting plate 251 is fully deployed, the limiting block 257 on the push rod 252 is inserted into the limiting hole for fixation. At this time, the reset block 254 is pushed outwards by the limiting block 257 towards the outside of the limiting hole. When it is necessary to retract the limiting mechanism 25, first press the reset block 254 to make the limiting block 257 disengage from the limiting hole. Then the extrusion sleeve 256 drives the push rod 252 to retract under the action of the second spring 259. Then manually retract the limiting plate 251 to complete the retraction of the limiting mechanism.

[0040] The working principle of this device is as follows: When the diameter of the pipeline needs to be reduced, install this device at the pipeline connection of a section of pipeline before the diameter reduction. First, put the sealing ring 3 between the two pipelines, so that the pressure reducing plate 31 is also located between the two pipelines. Then install the two clamp bodies 1 at the connection. When the fluid in the pipeline enters the buffer pipe with the same diameter through the pressure reducing hole 32, due to the restriction of the pressure reducing plate 31, the flow rate decreases, so that the pressure in the buffer pipe decreases, so as to ensure the stability of the pressure when flowing through the pipeline with a smaller diameter.

[0041] In summary, the present utility model provides a pressure-reducing clamp. Through the design of the pressure-reducing plate 31 and the pressure-reducing holes 32, the fluid in the pipeline can reduce the pressure in the pipeline when flowing through the pressure-reducing holes 32 and reaching the buffer pipe, and further enables the fluid to maintain the pressure in the pipeline with a smaller diameter when flowing into the pipeline with a smaller diameter, thereby enhancing the overall connection stability of the pipeline. Through the design of the fixing mechanism 2 and the limiting mechanism 25, the fixing mechanism 2 in the device does not need to be disassembled like the bolt and nut fixation, but only needs a single integral fixing mechanism 2 for fixation, which is convenient to use and further improves the installation efficiency of the clamp body 1.

[0042] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present utility model.

Claims

1. A pressure relief clamp, comprising two clamp bodies (1), both ends of the clamp body (1) are fixedly installed with fixing parts (13) that can be fixedly connected by a fixing mechanism (2), and a sealing ring (3) is installed inside the clamp body (1); characterized in that, A pressure reducing plate (31) is fixedly installed inside the sealing ring (3), and at least one pressure reducing hole (32) is formed in the pressure reducing plate (31).

2. The decompression clamp according to claim 1, wherein A connecting portion (33) is provided in the middle of the inner side of the sealing ring (3). A connecting groove is provided inside the connecting portion (33). The outer side of the pressure reducing plate (31) is embedded in the connecting groove, and the pressure reducing plate (31) abuts against the connecting portion (33).

3. The decompression clamp according to claim 2, wherein A number of first reinforcing ribs (11) are evenly arranged on the outer side of the clamp body (1), and a second reinforcing rib (12) is provided at the connection between the clamp body (1) and the fixing portion (13).

4. The decompression clamp according to claim 1, wherein, The fixing mechanism (2) includes a fixing column (24) that can pass through two opposite fixing portions (13). A threaded column (22) is fixedly installed at the top of the fixing column (24). A nut (23) is in threaded cooperation with the threaded column (22), and the nut (23) can abut against the upper surface of the upper fixing portion (13); a limiting mechanism (25) that can abut against the lower surface of the lower fixing portion (13) is installed at the bottom of the fixing column (24).

5. The decompression clamp according to claim 4, characterized in that, The limiting mechanism (25) includes a limiting plate (251) that can slide in the inner and outer directions of the fixing column (24). The limiting plate (251) is slidably matched with the bottom of the fixing column (24), and the limiting plate (251) can abut against the fixing portion (13).

6. The pressure reducing clamp according to claim 5, wherein A connecting column (255) is fixedly installed at the bottom of the fixing column (24). An extrusion sleeve (256) is coaxially slidably connected to the connecting column (255). The extrusion sleeve (256) is located below the limiting plate (251). The inner side of the limiting plate (251) is wedge-shaped, and the limiting plate (251) is matched with the extrusion sleeve (256). When the extrusion sleeve (256) moves upward, the limiting plate (251) slides toward the outside of the fixing column (24).

7. The decompression clamp according to claim 6, characterized in that, A fixing sleeve (253) is also coaxially fixedly installed at the bottom end of the connecting column (255). The extrusion sleeve (256) is located between the fixing sleeve (253) and the connecting column (255). The limiting plate (251) is located between the fixing column (24) and the fixing sleeve (253). The extrusion sleeve (256) and the limiting plate (251) are both slidably matched with the extrusion sleeve (256); a number of push rods (252) are fixedly installed at the bottom end of the extrusion sleeve (256). The end of the push rod (252) away from the extrusion sleeve (256) can pass through the fixing sleeve (253) and extend below the fixing sleeve (253).

8. The decompression clamp according to claim 7, characterized in that, An installation groove is provided on the push rod (252). A first spring (258) is fixedly installed on the inner wall of the installation groove. One end of the first spring (258) away from the inner wall of the installation groove is fixedly connected to a limiting block (257). The limiting block (257) is slidably matched with the installation groove; a limiting hole is provided on the fixing sleeve (253). A reset block (254) is slidably installed in the limiting hole. When the extrusion sleeve (256) is at the uppermost position, the limiting block (257) is inserted into the limiting hole.

9. The pressure reducing clamp according to claim 7, wherein, A second spring (259) is further fixedly installed at the bottom end of the extrusion sleeve (256), and one end of the second spring (259) away from the extrusion sleeve (256) is fixedly connected to the bottom of the fixed sleeve (253).

10. The pressure reducing clamp according to any one of claims 4-9, characterized in that, A bolt head is further fixedly installed at one end of the threaded column (22) away from the fixed column (24).

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