CN106930376B

CN106930376B - Seal ring type air pressure dredger

Info

Publication number: CN106930376B
Application number: CN201710283613.4A
Authority: CN
Inventors: 龙杰武
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-04-26
Filing date: 2017-04-26
Publication date: 2022-07-22
Anticipated expiration: 2037-04-26
Also published as: CN106930376A

Abstract

The invention relates to a sealing ring type air pressure dredger which comprises an inflator body, a connector, a water stop vent valve, a universal flexible shaft connecting rod and a vent plug, wherein the universal flexible shaft connecting rod is internally provided with a vent hose, and the vent plug is internally provided with a vent channel; the inflator body comprises a cylinder body, a piston movably arranged in the cylinder body, a handle and a thrust rod for connecting the piston and the handle; the connecting head is fixedly installed at an air outlet at the front end of the barrel body, the water-stopping ventilation valve is installed in a ventilation channel of the connecting head, one end of the universal flexible shaft connecting rod is fixedly connected with the front end of the connecting head, one end of the hose is communicated with the ventilation channel of the connecting head, the other end of the universal flexible shaft connecting rod is fixedly connected with the ventilation plug, and the other end of the hose is communicated with the ventilation channel of the ventilation plug. The seal ring type air pressure dredger has the advantages of simple structure, low production cost, convenience in use, good dredging effect and no need of depending on a power supply.

Description

Seal ring type air pressure dredger

Technical Field

The invention relates to the technical field of pipeline dredging devices, in particular to a sealing ring type pneumatic dredger.

Background

At present pipeline mediation in-process, the most time still adopts long and thin bamboo strips used for weaving, inserts the pipeline of jam, disclose the stopper through making a round trip to draw the thin bamboo strips used for weaving the pipe, the thin bamboo strips used for weaving the pipe that the straight tube was said or was bent less, when the thin bamboo strips used for weaving the pipe that is used for many return bends, urgent return bend, long tube and jam more serious, thin bamboo strips used for weaving the root can not do as the power. The existing manual pipeline dredging machine has no fixed pivot, one hand is used for holding the direction and the fixed position of the machine during working, the other hand is used for shaking the handle of the rotary machine, and the acting force of the two hands cannot be completely concentrated on the dredging shaft, particularly when the dredging shaft is blocked, the machine shakes, and an operator feels no strength. Although some electric pipe cleaning machines are available in the market, many work sites are far away from a power supply, so that the electric pipe cleaning machines cannot be normally used.

Disclosure of Invention

The invention aims to provide a sealing ring type pneumatic dredge, which is used for solving the problems that the existing dredge has poor dredging effect on a multi-bend pipeline, is inconvenient to operate and cannot be used in places without power supplies.

In order to achieve the purpose, the invention provides a sealing ring type air pressure dredger which comprises a inflator body, a connector, a water stop vent valve, a universal flexible shaft connecting rod and a vent plug, wherein the connector is internally provided with a vent channel; the inflator body comprises a cylinder body, a piston movably arranged in the cylinder body, a handle and a thrust rod for connecting the piston and the handle; the connector is fixedly installed at an air outlet in the front end of the barrel body, the water stop ventilation valve is installed in a ventilation channel of the connector, one end of the universal flexible shaft connecting rod is fixedly connected with the front end of the connector, one end of the hose is communicated with the ventilation channel of the connector, the other end of the universal flexible shaft connecting rod is fixedly connected with the ventilation plug, and the other end of the hose is communicated with the ventilation channel of the ventilation plug.

Preferably, stagnant water breather valve includes both ends open-ended casing, pneumatic piston, connecting rod, spring and pressure limiting piece, the pressure limiting piece includes pressure limiting ring and mounting, be provided with fixed orifices and air vent on the mounting, mounting fixed mounting is at the front end mouth of casing, the pressure limiting ring is located inside and be connected with the mounting through a plurality of bracing pieces of casing, pneumatic piston movable mounting be in the casing, the cover is equipped with rubber seal in pneumatic piston's the circumference, the one end of connecting rod with pneumatic piston fixed connection, the other end movably inserts in the fixed orifices, the spring housing is established on the connecting rod, the edge radial inward extension of casing rear end mouth forms an annular fender ring.

Preferably, the outer diameter of the rubber sealing ring is larger than the inner diameter of the pressure limiting ring and the inner diameter of the shell.

Preferably, a sealing ring is sleeved on the cylindrical surface of the shell.

Preferably, the universal flexible shaft connecting rod is formed by connecting a plurality of universal short sections end to end, and a channel is arranged in each universal short section.

Preferably, a hollow screw is installed at the front end opening of the connector ventilation channel, and one end of the hose is sleeved on the periphery of the hollow screw.

Preferably, the material of the ventilation plug is polyurethane plastic or polyamide plastic.

Preferably, the ventilation plug is a truncated cone, and the diameter of the front end face of the ventilation plug is smaller than that of the rear end face of the ventilation plug.

Preferably, a sealing surface of the ventilation plug is provided with a plurality of ribs.

The invention has the following advantages: the seal ring type air pressure dredger has the advantages of simple structure, low production cost, convenience in use, good dredging effect and no need of depending on a power supply.

Drawings

Fig. 1 is a schematic sectional structure view of the seal ring type pneumatic dredger of the invention.

Fig. 2 is a schematic structural diagram of the water stop ventilation valve of the invention.

Fig. 3 is a schematic sectional view of the water stop/vent valve of the present invention.

Fig. 4 is a schematic structural view of a pressure limiting member according to the present invention.

Detailed Description

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Example 1

As shown in fig. 1, the sealing ring type pneumatic dredger comprises an inflator body 1, a connector 2, a water-stopping vent valve 3, a universal flexible shaft connecting rod 4 and a ventilation plug 5. The pump body 1 includes a cylinder 11, a piston 12, a handle 13 and a thrust rod 14. The piston 12 is in a reversed bowl shape, the piston 12 is movably arranged in the cylinder body 11, the piston 12 and the cylinder body 11 are sealed, the handle 13 is connected with the piston 12 through the thrust rod 14, and when the handle 13 is pulled or pushed by hands, the piston 12 can move backwards or forwards. When the piston 12 moves forward, air between the piston 12 and the connector 2 is compressed, the pressure of the air is increased, when the piston 12 moves backward, the pressure of the air between the piston 12 and the connector 2 is reduced, the piston 12 deforms under the action of external air pressure, external air enters between the piston 12 and the connector 2 from a gap between the piston 12 and the inner wall of the cylinder body 11, and the structure of the inflator body 1 is the same as that of a bicycle inflator, and therefore detailed description is omitted. The connector 2 is installed in an air outlet at the front end of the barrel body 11 through a screw thread, a ventilation channel is arranged inside the connector 2, and a hollow screw 6 is installed at the front end of the ventilation channel of the connector 2.

As shown in fig. 2, 3 and 4, the water-stop ventilation valve 3 includes a housing 31, a pneumatic piston 32, a connecting rod 33, a spring 34 and a pressure limiting member 35, the housing 31 is a tubular structure with openings at two ends, the pressure limiting member 35 includes a pressure limiting ring 351 and a fixing member 352, a fixing hole 353 is provided at a central position of the fixing member 352, a plurality of vent holes 354 are provided around the fixing hole 353, the fixing member 352 is fixedly installed at a front port of the housing 31, the pressure limiting ring 351 is annular, the pressure limiting ring 351 is located inside the housing 31 and is connected with the fixing member 352 through a plurality of support rods 356, the pressure limiting ring 351 is attached to an inner wall of the housing 31, the pneumatic piston 32 is movably installed in the housing 31, a rubber sealing ring 321 is sleeved on a circumferential direction of the pneumatic piston 32, an outer diameter of the rubber sealing ring 321 is slightly larger than an inner diameter of the housing 31, after the pneumatic piston 32 is installed in the housing 31, the inner wall of the housing 31 presses an outer periphery of the rubber sealing ring 321, make it closely paste with the inner wall of casing 31, guarantee to realize sealing between the inner wall of rubber seal 321 and casing 31, simultaneously, the external diameter of rubber seal 321 is also slightly bigger than the internal diameter of pressure limiting ring 351, guarantee that only can pneumatic piston 32 pass through from pressure limiting ring 351 after the air pressure that pneumatic piston 32 received reaches certain pressure value, spring 34 is compressed, pneumatic piston 32 accomplishes the pressure release process, the interior atmospheric pressure of stack shell 11 reduces, when the air pressure that pneumatic piston 32 received is less than certain pressure value, compressed spring 34 extends, spring 34 is promoting pneumatic piston 32 and is passing through pressure limiting ring 351 and remove to initial position, rubber seal 321 realizes sealing again with the inner wall of casing 31. One end of the connecting rod 33 is fixedly connected to the front surface of the pneumatic piston 32, the other end is movably inserted into the fixing hole 353, the spring 34 is sleeved on the connecting rod 33, one end of the spring 34 abuts against the front surface of the pneumatic piston 32, the other end abuts against the fixing element 352, and the edge of the rear port of the housing 31 extends radially inward to form an annular retaining ring 312. When the handle 13 is pushed by hand, the piston 12 moves forward, the air between the piston 12 and the connector 2 is compressed, the pressure of the air is increased, and the air pushes the air piston 32 to move close to the fixing member 352. When the handle 13 is pulled by hand, the piston 12 moves backwards, the air pressure between the piston 12 and the connector 2 is reduced, the air piston 32 is blocked by the blocking ring 312 and cannot move, and the air piston 32 is sealed with the inner wall of the housing 31 and cannot pass through, so that the piston 12 is deformed under the action of external air pressure, and air enters between the piston 12 and the connector 2 through a gap between the piston 12 and the inner wall of the barrel 11. Further, in order to prevent air leakage between the outer surface of the housing 31 and the ventilation channel of the connector 2, a sealing ring 311 is further sleeved on the cylindrical surface of the housing 31.

The universal flexible shaft connecting rod 4 is formed by connecting a plurality of universal short sections 41 end to end, one end of the universal flexible shaft connecting rod 4 is fixedly connected with the front end of the connector 2, the other end of the universal flexible shaft connecting rod is fixedly connected with the rear end of the ventilation plug 5, the universal short sections 41 comprise convex parts 42 and concave parts 43, the convex parts 42 are spheres, the concave parts 43 are hollow hemispheroids, the convex parts 42 and the concave parts 43 of every two adjacent universal short sections 41 are buckled together to form a connecting rod capable of being bent, certain friction force exists between the convex parts 42 and the concave parts 43, therefore, the universal flexible shaft connecting rod 4 can be bent only by certain external force, the universal short sections 41 can be applied to bent pipelines, a channel is arranged inside the universal short sections 41, a hose 44 is arranged in the channel, one end of the hose 44 is sleeved on the periphery of the hollow screw 6, and the other end of the hose is communicated with the ventilation channel of the ventilation plug 5. The universal flexible shaft connecting rod 4 can protect the hose 44, can transmit pressure applied to the inflator body to the ventilation plug 5, enables the ventilation plug 5 to be attached to the inner wall of a pipeline more tightly, and can be bent to be applied to a bent pipeline.

The ventilation plug 5 is a truncated cone, the diameter of the front end face of the ventilation plug 5 is smaller than that of the rear end face, and the ventilation plug 5 is made of polyurethane plastic or polyamide plastic. The ventilation plug 5 is simple in structure and low in production cost, and a plurality of ribs are arranged on the sealing surface of the ventilation plug 5 in order to enable the ventilation plug 5 to be attached to the inner wall of the pipeline more tightly. The air-permeable plug 5 is provided with a certain pressure, the convex edges can be attached to the inner wall of the pipeline more tightly, and the phenomenon of air leakage is prevented from affecting the dredging effect.

The working principle is as follows: when the air pressure-reducing device is used, one hand holds the barrel body 11, the other hand holds the handle 13, the ventilation plug 5 is placed at the opening of a water pipeline, the barrel body 11 is pressed forcibly to enable the ventilation plug 5 to be tightly attached to the inner wall of the pipeline, the handle 13 is pulled by hand, the piston 12 moves backwards, the air pressure between the piston 12 and the connector 2 is reduced, the pneumatic piston 32 and the inner wall of the shell 31 are sealed, air cannot pass through, therefore, under the action of external air pressure, the piston 12 deforms, external air enters the space between the piston 12 and the inner wall of the barrel body 11 through a gap between the piston 12 and the inner wall of the barrel body 11, when the barrel body 11 is filled with air, when the handle 13 is pushed by hand, the piston 12 moves forwards, the air between the piston 12 and the connector 2 is compressed, the air pressure of the air is increased, the air pushes the pneumatic piston 32 to move towards the direction close to the fixing piece 352, and the spring 34 is compressed, when the pneumatic piston 32 moves to the rear end face of the pressure limiting ring 351, because the outer diameter of the rubber sealing ring 321 is larger than the inner diameter of the pressure limiting ring 351, the pressure limiting ring 351 prevents the pneumatic piston 32 from moving forwards, when the handle 13 is continuously pushed, the air pressure between the piston 12 and the connector 2 is further increased, after the pressure applied on the pneumatic piston 32 reaches a certain pressure value, the rubber sealing ring 321 is compressed and deformed, the outer diameter of the rubber sealing ring is reduced, the pneumatic piston 32 instantly moves towards the direction close to the fixing piece 352 through the pressure limiting ring 351, because of the existence of the supporting rod 356, a gap exists between the rubber sealing ring 321 and the inner wall of the shell 31, the compressed air instantly flows out from the vent hole 354 through the gap and then enters the vent channel of the connector 2, finally enters the pipeline through the vent channel of the hose 44 and the vent plug 5, and because the vent plug 5 is tightly attached to the inner wall of the pipeline, a closed space is formed inside the pipeline, inside a large amount of air got into the pipeline in the twinkling of an eye, the air applyed impact pressure in the twinkling of an eye for the plug in the pipeline, blows the plug and scatters to reach the effect of dredging the pipeline. After the pressure relief process of the pneumatic piston 32 is completed, the air pressure in the barrel 11 is reduced, when the air pressure applied to the pneumatic piston 32 is smaller than a certain pressure value, the compressed spring 34 extends, the spring 34 pushes the pneumatic piston 32 to move in a reverberating manner and move to an initial position through the pressure limiting ring 351, and the rubber sealing ring 321 is sealed with the inner wall of the shell 31. If the blockage is not blown out, the user only needs to repeatedly push and pull the handle 13, so that the pressure inside the pipeline is continuously increased, and finally the blockage is blown out to dredge the pipeline. Therefore, the sealing ring type air pressure dredger can be used for flushing away the blockage by utilizing the huge impulsive force of the compressed air no matter how complex the shape of the pipeline is and no matter how serious the blockage is.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, it is intended that all such modifications and alterations be included within the scope of this invention as defined in the appended claims.

Claims

1. A seal ring type pneumatic dredge comprises an inflator body, a connector, a water stop vent valve, a universal flexible shaft connecting rod and a ventilation plug, wherein a ventilation channel is formed in the connector; the inflator body comprises a cylinder body, a piston movably arranged in the cylinder body, a handle and a thrust rod for connecting the piston and the handle; the water-stop ventilation valve is installed in a ventilation channel of the connector, one end of the universal flexible shaft connecting rod is fixedly connected with the front end of the connector, one end of the hose is communicated with the ventilation channel of the connector, the other end of the universal flexible shaft connecting rod is fixedly connected with the ventilation plug, and the other end of the hose is communicated with the ventilation channel of the ventilation plug.

2. The seal ring type air pressure dredger according to claim 1, wherein the water-stop ventilation valve comprises a shell with two open ends, a pneumatic piston, a connecting rod, a spring and a pressure limiting piece, the pressure limiting piece comprises a pressure limiting ring and a fixing piece, the fixing piece is provided with a fixing hole and a vent hole, the fixing piece is fixedly installed at a front port of the shell, the pressure limiting ring is located inside the shell and is connected with the fixing piece through a plurality of supporting rods, the pneumatic piston is movably installed in the shell, a rubber seal ring is sleeved on the circumferential direction of the pneumatic piston, one end of the connecting rod is fixedly connected with the pneumatic piston, the other end of the connecting rod is movably inserted into the fixing hole, the spring is sleeved on the connecting rod, and the edge of the rear port of the shell extends radially inwards to form an annular retaining ring.

3. The seal ring type pneumatic dredge of claim 2, wherein the outer diameter of the rubber seal ring is larger than the inner diameter of the pressure limiting ring and the inner diameter of the casing.

4. The seal ring type pneumatic dredger according to claim 2, wherein the cylindrical surface of the casing is sleeved with a seal ring.

5. The seal ring type pneumatic dredger according to claim 1, wherein the universal flexible shaft connecting rod is formed by connecting a plurality of universal short sections end to end, and a channel is arranged inside each universal short section.

6. The seal ring type pneumatic dredger according to claim 1, wherein a hollow screw is mounted at a front port of the connector vent passage, and one end of the hose is sleeved on the periphery of the hollow screw.

7. The seal ring type pneumatic dredger according to claim 1, wherein the ventilation plug is made of polyurethane plastic or polyamide plastic.

8. The seal ring type pneumatic dredger according to claim 7, wherein the ventilation plug is a truncated cone, and the diameter of the front end face of the ventilation plug is smaller than that of the rear end face of the ventilation plug.

9. The seal ring type pneumatic dredger according to claim 8, wherein the sealing surface of the ventilation plug is provided with a plurality of ribs.