CN204345160U - Magnetic force pressure relief device - Google Patents

Abstract

The utility model discloses a kind of magnetic force pressure relief device, comprise pipe cap, body, the first magnet, the second magnet and annular boss, pipe cap is the round tubular structure that one end is closed, and the first magnet is located on the inner roof wall of pipe cap, and the inwall of pipe cap is provided with screw thread; Body is round tubular structure, the tube wall outer wall at body two ends is respectively equipped with top screw thread and lower thread, the outer side wall of annular boss is fixed on the madial wall of body, second magnet is placed on endoporus annular boss also covering completely annular boss, the sidewall of body has the discharge orifice with extraneous conducting, discharge orifice is positioned at the top of the second magnet; The top screw thread of body is threaded with pipe cap, and the opposing side of the first magnet and the second magnet is same magnetic pole.The utility model directly controls the pressure in pipeline by the interaction force between the first magnet and the second magnet two block permanent magnet, avoid the dependence to electric power and electric accumulator, and structure is simple, easy to operate, is easy to promote.

Description

Magnetic Pressure Relief Device

technical field

The utility model relates to the sealing field, in particular to a magnetic pressure relief device.

Background technique

Plastic pipe refers to the general term for pipes made of plastic materials. Plastic pipes have the characteristics of light weight, corrosion resistance, high compressive strength, sanitation and safety, small water flow resistance, energy saving, metal saving, improved living environment, long service life, safety and convenience, etc., and are favored by the pipeline engineering industry. In the past 10 years, driven by the rapid development of my country's macro economy, my country's plastic pipes have experienced rapid development in the context of the rapid development of chemical building materials. Like all closed pipelines, plastic pipelines will also be damaged due to excessive pressure on some parts due to uneven force on the pipe wall. Therefore, in order to maintain the normal operation of the pipeline, it is necessary to drain the pipeline from time to time. pressure.

Since most of the existing magnetic pressure relief devices are realized by electromagnets, the magnetic pressure relief devices generally include coils, sliding electromagnets, fixed electromagnets, sliding pistons, sealing blocks, return springs and static contacts. The wires are respectively connected to the static contact and the other electrode of the power supply to form a complete working circuit. The magnetic force of the electromagnet is controlled by energizing and de-energizing the coil to control the sealing and dredging of the sealing block to the pipeline. The magnetic pressure relief device using an electromagnet is highly dependent on electric power and an electric storage device, has a complex structure, and is relatively expensive, so it is not convenient to be popularized and used in poor areas.

Utility model content

In order to overcome the problems of the above-mentioned products, the utility model provides a magnetic pressure relief device which does not rely on electric power and is cheap.

The technical solution adopted in order to achieve the purpose of this utility model is: a magnetic pressure relief device, including a pipe cap, a pipe body, a first magnet, a second magnet and an annular boss, and the pipe cap is a circular shape with one end closed. Tubular structure, the first magnet is arranged on the inner top wall of the pipe cap, and the inner wall of the pipe cap is provided with threads; the pipe body is a circular tubular structure, and the outer walls of the pipe walls at both ends of the pipe body are respectively provided with upper threads and lower threads. screw thread, the outer wall of the annular boss is fixed on the inner wall of the pipe body, the second magnet is placed on the annular boss and completely covers the inner hole of the annular boss, and the side wall of the pipe body is provided with a leak that communicates with the outside world. The flow hole and the discharge hole are located above the second magnet; the upper thread of the pipe body is threadedly connected with the pipe cap, and the opposite surfaces of the first magnet and the second magnet are of the same magnetic pole.

The upper thread referred to in this paper refers to the external thread connecting the pipe body and the cap, and the lower thread refers to the external thread connecting the pipe body and the pipeline to be protected. The top of the second magnet refers to the space away from the second magnet and close to the upper thread.

The working principle of the utility model: when in use, the lower thread on the pipe body is threaded with the pipeline system to be protected. Then the pipe cap is screwed to the pipe body. When the pipe cap is connected to the pipe body, because the opposite surfaces of the first magnet and the second magnet are the same magnetic pole, the natural phenomenon that the same poles of the magnets repel each other is used, and the second magnet is affected by the first magnet. Given the magnetic force, the second magnet fits closely with the annular boss, completely covers the inner hole of the annular boss, isolates the inside and outside of the pipeline, and makes it airtight to the liquid or gas in the pipeline. Adjust the distance between the first magnet and the second magnet by adjusting the threaded distance between the pipe cap and the pipe body, and then adjust the magnitude of the magnetic force. When the magnetic force is equal to the pressure of the protected pipeline, stop adjusting. At this time, the magnetic force of the magnet and the pipeline internal pressure balance. When the pressure in the pipeline is too high, the liquid or gas in the pipeline will push the second magnet to move upward, so that the second magnet leaves the annular boss to expose the blocked discharge hole, and the liquid or gas in the protected pipeline will flow from the first The gap between the second magnet and the annular boss rushes outward to the discharge hole and flows out through the discharge hole. When a certain amount of liquid or gas in the pipeline flows out, the pressure in the pipeline will gradually drop until it returns to the original internal pressure in the pipeline. Because the distance between the second magnet and the first magnet is shortened, the magnetic force between the two becomes larger. When the internal pressure of the pipeline drops, the second magnet also gradually falls back to the annular boss under the action of the magnetic force until the second The magnetic force of the magnet and the internal pressure of the pipeline reach a balance again, the second magnet is in close contact with the annular boss again, and the second magnet completely covers the inner hole of the annular boss to seal the pipeline.

Compared with the prior art, the utility model has the beneficial effects: 1. The pressure in the pipeline is directly controlled by the interaction force between the two permanent magnets of the first magnet and the second magnet, which avoids damage to the electric power and the storage device. dependency. 2. The utility model only includes a pipe cap, a pipe body, a first magnet and a second magnet, and has a simple structure, common materials, cheap price, convenient operation and easy popularization.

Further, the pipe cap and the pipe body are both plastic, moisture-proof and corrosion-proof.

Further, the first magnet is a circular sheet magnet that matches the size of the inscribed circle of the tube cap, and the second magnet is a circular sheet magnet that matches the size of the inscribed circle of the tube cap. The first magnet and the second magnet All are circular sheet magnets matching the size of the inscribed circle of the pipe wall, and a magnet with the largest area and capable of moving up and down smoothly is installed in a limited space.

Further, the first magnet and the second magnet are wrapped with a layer of rubber to prevent the first magnet and the second magnet from contacting with the outside air, so as to prevent the magnets from being corroded and magnetically degraded.

Further, the tube cap is provided with a limit ring, and the limit ring is in close contact with the first magnet to firmly fix the first magnet in the tube cap.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described:

Fig. 1 is a schematic structural view of an embodiment of the utility model.

The reference signs in the figure are: 1-pipe cap, 2-limiting ring, 3-first magnet, 4-pipe body, 5-upper thread, 6-lower thread, 7-annular boss, 8-discharge hole , 9-the second magnet.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and embodiments, but not as a limitation of the utility model.

As shown in Figure 1, a magnetic pressure relief device includes a cap 1, a body 4, a first magnet 3 and a second magnet 9, the cap 1 is a circular tubular structure with one end closed, and the cap 1 is provided with a limit The position ring 2 and the limit ring 2 are inlaid with the first magnet 3, the first magnet 3 is close to the top wall of the pipe cap 1, and the pipe wall of the pipe cap 1 is provided with threads; the pipe body 4 is a circular tubular structure, and the pipe body 4 The outer sides of the pipe wall at both ends are respectively provided with upper thread 5 and lower thread 6, and the pipe body 4 is provided with a horizontal annular boss 7, and the second magnet 9 is placed on the annular boss 7 and sealed with the annular boss 7. The pipe wall of the pipe body 4 above the two magnets 9 has a discharge hole 8; the upper thread 5 of the pipe body 4 is threadedly connected with the pipe cap 1, and the opposite faces of the first magnet 3 and the second magnet 9 are the same magnetic pole.

Both the pipe cap 1 and the pipe body 4 of this embodiment are made of plastic material, which is moisture-proof and corrosion-proof. The first magnet 3 matches the size of the inscribed circle of the cap 1, the second magnet 9 matches the size of the inscribed circle of the tube body 4, and the magnet with the largest area is set in the limited space, so that the first magnet 3 and the second The magnets 9 are sealed and attached to the limit ring 2 and the annular boss 7 respectively and can move up and down smoothly in the pipe cap 1 above the limit ring 2 and in the tube body 4 above the annular boss 7, and the first magnet 3 and the second Magnet 9 is powerful magnet, and the magnetic force that produces between the two is big. Both the first magnet 3 and the second magnet 9 are wrapped with a layer of rubber to prevent the first magnet 3 and the second magnet 9 from being in contact with the outside air, so as to prevent the magnets from being corroded and magnetically reduced.

In this embodiment, the pressure in the pipeline is directly controlled through the interaction force between the two permanent magnets, the first magnet 3 and the second magnet 9, thereby avoiding dependence on electricity and storage devices. Moreover, this embodiment only includes the tube cap 1, the tube body 4, the first magnet 3 and the second magnet 9, and has a simple structure, common materials, cheap price, convenient operation and easy popularization.

During use, the lower screw thread 6 on the pipe body 4 is screwed to the pipeline system to be protected. Pipe cap 1 is threaded with pipe body 4 again, when pipe cap 1 is connected with pipe body 4, because the opposite surface of the first magnet 3 and the second magnet 9 is the same magnetic pole, utilizes the natural phenomenon that the same pole of the magnet repels each other, the second The second magnet 9 is subjected to the magnetic force given by the first magnet 3, so that the second magnet 9 is far away from the first magnet 3, the first magnet 3 is close to the top of the cap 1, and the second magnet 9 is close to the annular boss 7 to block the second magnet. 9. The discharge hole 8 on the pipe wall of the upper pipe body 4 isolates the inside and outside of the protected pipe, making it airtight to the liquid or gas in the pipe. Adjust the distance between the first magnet 3 and the second magnet 9 by adjusting the threaded distance between the pipe cap 1 and the pipe body 4, and then adjust the magnitude of the magnetic force. When the magnetic force is equal to the pressure of the protected pipeline, stop adjusting. At this time, the magnet The magnetic force is balanced with the pressure inside the pipe. When the pressure in the pipeline is too high, the liquid or gas in the pipeline will push the second magnet 9 upward, so that the second magnet 9 will leave the annular boss 7, reveal the blocked discharge hole 8, and protect the liquid in the pipeline. Or the gas rushes out from the gap between the second magnet 9 and the annular boss 7 to the discharge hole 8 and flows out through the discharge hole 8 . When a certain amount of liquid or gas in the pipeline flows out, the pressure in the pipeline will gradually drop until it returns to the original internal pressure in the pipeline. Because the distance between the second magnet 9 and the first magnet 3 is shortened, the magnetic force between the two becomes larger. When the internal pressure of the pipeline drops, the second magnet 9 also gradually falls back to the annular boss 7 under the action of the magnetic force. , until the magnetic force of the second magnet 9 and the internal pressure of the pipeline reach equilibrium again, the second magnet 9 is in close contact with the annular boss 7 again, and the second magnet 9 completely covers the inner hole of the annular boss 7 to seal the pipeline.

The above-mentioned embodiments are only preferred specific implementations of the utility model, and the usual changes and replacements performed by those skilled in the art within the scope of the technical solution of the utility model shall be included in the protection scope of the utility model.

Claims (5)

1. a magnetic force pressure relief device, is characterized in that, comprises pipe cap, body, the first magnet, the second magnet and annular boss, and described pipe cap is the round tubular structure that one end is closed, and the first magnet is located on the inner roof wall of pipe cap, and the inwall of pipe cap is provided with screw thread; Described body is round tubular structure, the tube wall outer wall at body two ends is respectively equipped with top screw thread and lower thread, the outer side wall of annular boss is fixed on the madial wall of body, second magnet is placed on endoporus annular boss also covering completely annular boss, the sidewall of body has the discharge orifice with extraneous conducting, discharge orifice is positioned at the top of the second magnet; The top screw thread of body is threaded with pipe cap, and the opposing side of the first magnet and the second magnet is same magnetic pole.

2. a kind of magnetic force pressure relief device according to claim 1, it is characterized in that, described pipe cap and body are plastics.

3. a kind of magnetic force pressure relief device according to claim 1, is characterized in that, described first magnet is the round sheet magnet mated with pipe cap inscribed circle size, and described second magnet is the round sheet magnet mated with body inscribed circle size.

4. a kind of magnetic force pressure relief device according to claim 1, is characterized in that, described first magnet and the second magnet are all wrapped in one deck rubber outward.

5. a kind of magnetic force pressure relief device according to claim 1, is characterized in that, described pipe cap madial wall is provided with limited ring, and limited ring and the first magnet are close to.