Pressure self-starting type gas-tracing pipeline switch

Abstract

The utility model discloses a pressure self-starting type air-accompanying pipeline switch, which relates to the technical field of pressure switches and comprises an ash conveying pipe, an ash inlet is arranged at the upper end of the ash conveying pipe, a supporting column is arranged at the lower end of the ash conveying pipe, an air conveying pipe is arranged at the left end of the ash conveying pipe, and an ash conveying air compressor is arranged at the left end of the air conveying pipe. A pressure sensing mechanism is arranged on the upper side of the left end of the supporting column, a pressure transmission mechanism is arranged on the upper side of the left end of the supporting column, a ball valve structure is arranged in the middle of the air conveying pipe, and the ball valve structure is controlled through the pressure transmission mechanism. And when the pressure is not enough, the reset spring can close the ball valve structure, and air supply is stopped.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure switches, in particular to a pressure self-starting gas pipeline switch. Background Art

[0002] A positive pressure dense phase pneumatic ash conveying system described in patent announcement number CN220707370U includes a base, a support plate is fixedly connected to the left side of the top of the base, and an ash conveying air compressor is fixedly connected to the bottom of the right side of the support plate through a mounting frame. The utility model enables the positive-pressure dense-phase pneumatic ash conveying system to have the advantages of a complete later-stage fly ash collection and processing mechanism through the cooperation of a base, a support plate, an ash conveying air compressor, an ash conveying pipe, a connecting sleeve, an ash hopper, a high-voltage electric precipitator, a flue, a material level sensor, an ash discharge pipe, a discharge valve, a shell, a mounting groove, a mounting plate, a fixing frame, a dust filter plate, a positioning groove, a spring, a movable block, a plug rod and an ash collecting bin, so that the positive-pressure dense-phase pneumatic ash conveying system has the advantages of a complete later-stage fly ash collection and processing mechanism, and solves the problem that the ash bin of the existing positive-pressure dense-phase pneumatic ash conveying system of a coal-fired power plant is not provided with an intuitive filtering mechanism and a convenient ash cleaning mechanism, the fly ash conveyed by pneumatic means will generate relatively large dust, and there is no corresponding good filtering and collecting mechanism to cooperate with each other, so that the later-stage matters of ash conveying cannot be well processed. However, when the solenoid valve of the device is opened, the airflow generated by the ash conveying air compressor causes the falling ash to flow back into the ash hopper to cause blockage.

[0003] Based on this, a pressure self-starting gas pipeline switch is now provided to eliminate the disadvantages of the existing devices. Utility Model Content

[0004] The utility model aims to provide a pressure self-starting gas pipeline switch to solve the problems in the background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A pressure self-starting air pipeline switch comprises an ash conveying pipe, wherein an ash inlet is provided at the upper end of the ash conveying pipe, a support column is provided at the lower end of the ash conveying pipe, an air conveying pipe is provided at the left end of the ash conveying pipe, an ash conveying air compressor is provided at the left end of the air conveying pipe, a pressure transmission mechanism is provided on the upper side of the left end of the support column, a ball valve structure is provided in the middle of the air conveying pipe, and the input end of the ball valve structure is connected to the output end of the pressure transmission mechanism.

[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In an optional scheme: the pressure transmission mechanism includes a protective shell, a pressure plate, a pressure rod, a limit frame, a push rod, a spring plate, a transverse spring groove, a first limit spring, a second limit spring and a vertical spring groove, the protective shell is arranged at the upper end of the left side of the support column, the limit frame is arranged in the protective shell, the upper end of the limit frame is provided with a pressure rod, the pressure rod passes through the protective shell and is fixedly connected with the pressure plate, the pressure plate is slidably arranged on the lower side wall of the ash conveying pipe, the transverse spring groove is provided on the right inner wall of the protective shell, the vertical spring groove is provided on the lower inner wall of the protective shell, two first limit springs are provided in the transverse spring groove, two second limit springs are provided in the vertical spring groove, the left end of the first limit spring is connected to the spring plate, the upper end of the second limit spring is connected to the limit frame, and the left end of the spring plate is fixedly connected to the push rod.

[0009] In an optional solution: the ball valve structure includes a ball, a valve seat and a valve stem, the valve seat is arranged on the inner wall of the air supply pipe, the ball is arranged in the middle of the valve seat, the valve stem is arranged at the lower end of the ball, and the lower end of the valve stem is also provided with a ball rotating device connected to the pressure transmission mechanism.

[0010] In an optional solution: the ball rotation device includes a fixed shaft, a reset torsion spring and a push plate, the fixed shaft is arranged on the protective shell, the reset torsion spring is arranged on the fixed shaft, the upper end of the push plate is fixedly connected to the valve stem, and the side surface is fixedly connected to the reset end of the reset torsion spring.

[0011] In an optional solution, the size of the limiting frame is larger than the left side of the spring plate and smaller than the right side.

[0012] In an optional solution: the left end of the push rod is connected with a rotating block, and the rotating block is tightly attached to the push plate.

[0013] In an optional solution: a dustproof net is provided at the air outlet of the air duct.

[0014] In an optional solution, the ash conveying pipe is made of austenitic heat-resistant steel.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] During use, the utility model controls the switch of the accompanying air pipe through the ash pressure. When enough dust falls onto the pressure plate, the pressure sensing mechanism will be triggered, thereby pushing the ball rotating device to open the ball valve structure and connect the air supply pipe. When the pressure is insufficient, the reset spring will close the ball valve structure to prevent air supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2It is a right side sectional view of the present utility model.

[0019] Figure 3 For this utility model Figure 2 A partial enlarged view of middle A.

[0020] Figure 4 This is a schematic diagram of the structure of the pressure transmission mechanism of the utility model.

[0021] Notes on figure numbers: 100, ash conveying pipe; 200, ash inlet; 300, support column; 400, air conveying pipe; 500, ash conveying air compressor; 600, pressure transmission mechanism; 601, protective shell; 602, pressure plate; 603, pressure rod; 604, limit frame; 605, push rod; 606, spring plate; 607, transverse spring groove; 608, first limit spring; 609, rotating block; 610, second limit spring; 611, vertical spring groove; 700, ball valve structure; 701, ball; 702, valve seat; 703, valve stem; 800, ball rotating device; 801, fixed shaft; 802, reset torsion spring; 803, push plate. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] Example 1

[0024] In one embodiment, Figure 1-Figure 4 As shown, a pressure self-starting air pipeline switch includes an ash conveying pipe 100, wherein the upper end of the ash conveying pipe 100 is provided with an ash inlet 200, the lower end of the ash conveying pipe 100 is provided with a support column 300, the left end of the ash conveying pipe 100 is provided with an air conveying pipe 400, the left end of the air conveying pipe 400 is provided with an ash conveying air compressor 500, the upper side of the left end of the support column 300 is provided with a pressure transmission mechanism 600, and the middle of the air conveying pipe 400 is provided with a ball valve structure 700, the input end of the ball valve structure 700 is connected with the output end of the pressure transmission mechanism 600. Through the above arrangement, when dust enters the ash conveying pipe 100, the pressure transmission mechanism 600 will be pressurized, thereby starting the ball valve structure 700 to make the air conveying pipe 400 unblocked and blow away the dust, and at the same time, the pressure transmission mechanism 600 loses pressure to close the ball valve structure 700.

[0025] In one embodiment, Figure 4As shown, the pressure transmission mechanism 600 includes a protective shell 601, a pressure plate 602, a pressure rod 603, a limit frame 604, a push rod 605, a spring plate 606, a transverse spring groove 607, a first limit spring 608, a second limit spring 610 and a vertical spring groove 611. The protective shell 601 is arranged at the upper left end of the support column 300, and the limit frame 604 is arranged in the protective shell 601. The upper end of the limit frame 604 is provided with a pressure rod 603, and the pressure rod 603 passes through the protective shell 601 and is fixedly connected with the pressure plate 602. The pressure plate 602 is slidably arranged on the lower side wall of the ash conveying pipe 100, and the transverse spring groove 607 is arranged on the right inner wall of the protective shell 601, and the vertical spring groove 611 is arranged on the lower inner wall of the protective shell 601. Spring slot 611, two first limit springs 608 are arranged in the transverse spring slot 607, and two second limit springs 610 are arranged in the vertical spring slot 611. The left end of the first limit spring 608 is connected to the spring plate 606, and the upper end of the second limit spring 610 is connected to the limit frame 604. The left end of the spring plate 606 is fixedly connected with a push rod 605. Through the above settings, the pressure plate 602 is pressed down by the gray pressure. When the limit frame 604 and the spring plate 606 are relative to each other, the spring plate 606 is pushed out by the first limit spring 608, thereby opening the ball valve structure 700 through the push rod 605. When the pressure is lost, the limit frame 604 rebounds through the second limit spring 610 to press the spring plate 606 back, thereby closing the ball valve structure 700.

[0026] In one embodiment, Figure 2 As shown, the ball valve structure 700 includes a ball 701, a valve seat 702 and a valve stem 703. The valve seat 702 is arranged on the inner wall of the air supply pipe 400, the ball 701 is arranged in the middle of the valve seat 702, and the valve stem 703 is arranged at the lower end of the ball 701. The lower end of the valve stem 703 is also provided with a ball rotating device 800 connected to the pressure transmission mechanism 600. Through the above arrangement, when the device is opened, the middle opening of the ball 701 faces the air supply pipe 400 so that the air supply pipe 400 can supply air normally. When the device is closed, the ball 701 rotates to block the air supply pipe 400.

[0027] In one embodiment, Figure 3 As shown, the ball rotation device 800 includes a fixed shaft 801, a reset torsion spring 802 and a push plate 803. The fixed shaft 801 is arranged on the protective shell 601, and the reset torsion spring 802 is arranged on the fixed shaft 801. The upper end of the push plate 803 is fixedly connected to the valve stem 703, and the side surface is fixedly connected to the reset end of the reset torsion spring 802. Through the above arrangement, when the push plate 803 is pushed, it will drive the valve stem 703 to rotate, thereby starting the ball valve structure 700. When the push plate 803 loses thrust, it will reset under the action of the reset torsion spring 802, thereby closing the ball valve structure 700.

[0028] In one embodiment, Figure 4 As shown, the size of the limit frame 604 is larger than the left side of the spring plate 606 and smaller than the right side. Through the above arrangement, the limit frame 604 can squeeze the spring plate 606 backward under the action of the second limit spring 610 without being stuck by the spring plate 606.

[0029] In one embodiment, Figure 3 As shown, the left end of the push rod 605 is rotatably connected to a rotating block 609, and the rotating block 609 is tightly attached to the push plate 803. Through the above arrangement, the push rod 605 can push the push plate 803 to rotate through the rotating block 609, and the ball valve structure 700 will not be unable to fully open due to the inability to rotate the push plate 803 into place.

[0030] Example 2

[0031] In one embodiment, a dustproof net is provided at the air outlet of the air delivery pipe 400. Through the above arrangement, dust will not enter the ash conveying air compressor 500 and cause blockage.

[0032] In one embodiment, the ash conveying pipe 100 is made of austenitic heat-resistant steel. Through the above configuration, the ash conveying pipe 100 will not be affected in use due to thermal deformation.

[0033] The above-mentioned embodiment discloses a pressure self-starting air pipeline switch. When in use, the dust entering the device through the ash inlet 200 generates ash pressure. When the ash pressure reaches a certain level, the limit frame 604 and the spring plate 606 in the pressure transmission mechanism 600 will be positioned relative to each other, thereby pushing the push rod 605 to move. The displacement of the push rod 605 will cause the rotating block 609 on the other end to push the push plate 803 to rotate, thereby causing the ball 701 in the ball valve structure 700 to rotate and connect to the air supply pipe 400. As the air is continuously supplied to blow away the dust, the ash pressure on the pressure plate 602 is reduced, and the limit frame 604 rebounds under the action of the second limit spring 610, compressing the spring plate 606 to retract and cause the push plate 803 to lose its thrust. The push plate 803 is also reset under the action of the reset torsion spring 802, driving the ball 701 to rotate and close the air supply pipe, completing the entire pressure self-starting process.

[0034] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A pressure self-starting gas pipeline switch, comprising an ash conveying pipe (100), an ash inlet (200) is provided at the upper end of the ash conveying pipe (100), a support column (300) is provided at the lower end of the ash conveying pipe (100), an air conveying pipe (400) is provided at the left end of the ash conveying pipe (100), and an ash conveying air compressor (500) is provided at the left end of the air conveying pipe (400), characterized in that: A pressure transmission mechanism (600) is provided on the upper left side of the support column (300), a ball valve structure (700) is provided in the middle of the air supply pipe (400), and the input end of the ball valve structure (700) is connected to the output end of the pressure transmission mechanism (600).

2. A pressure self-starting gas pipeline switch according to claim 1, characterized in that: The pressure transmission mechanism (600) comprises a protective shell (601), a pressure plate (602), a pressure rod (603), a limit frame (604), a push rod (605), a spring plate (606), a transverse spring groove (607), a first limit spring (608), a second limit spring (610) and a vertical spring groove (611). The protective shell (601) is arranged at the upper left end of the support column (300). The limit frame (604) is arranged in the protective shell (601). The upper end of the limit frame (604) is provided with a pressure rod (603). The pressure rod (603) passes through the protective shell (601) and is fixedly connected to the pressure plate (602). The force plate (602) is slidably arranged on the lower side wall of the ash conveying pipe (100), and the transverse spring groove (607) is arranged on the right inner wall of the protective shell (601), and the vertical spring groove (611) is arranged on the lower inner wall of the protective shell (601). Two first limit springs (608) are arranged in the transverse spring groove (607), and two second limit springs (610) are arranged in the vertical spring groove (611). The left end of the first limit spring (608) is connected to the spring plate (606), and the upper end of the second limit spring (610) is connected to the limit frame (604). The left end of the spring plate (606) is fixedly connected to a push rod (605).

3. A pressure self-starting gas pipeline switch according to claim 1, characterized in that: The ball valve structure (700) comprises a ball (701), a valve seat (702) and a valve stem (703); the valve seat (702) is arranged on the inner wall of the air supply pipe (400); the ball (701) is arranged in the middle of the valve seat (702); the valve stem (703) is arranged at the lower end of the ball (701); and the lower end of the valve stem (703) is also provided with a ball rotating device (800) connected to the pressure transmission mechanism (600).

4. A pressure self-starting gas pipeline switch according to claim 3, characterized in that: The ball rotating device (800) comprises a fixed shaft (801), a reset torsion spring (802) and a push plate (803); the fixed shaft (801) is arranged on the protective shell (601); the reset torsion spring (802) is arranged on the fixed shaft (801); the upper end of the push plate (803) is fixedly connected to the valve stem (703); and the side surface is fixedly connected to the reset end of the reset torsion spring (802).

5. A pressure self-starting gas pipeline switch according to claim 2, characterized in that: The size of the limiting frame (604) is larger than the left side of the spring plate (606) and smaller than the right side.

6. A pressure self-starting gas pipeline switch according to claim 2, characterized in that: The left end of the push rod (605) is connected to a rotating block (609), and the rotating block (609) is closely attached to the push plate (803).

7. A pressure self-starting gas pipeline switch according to claim 1, characterized in that: A dustproof net is provided at the air outlet of the air delivery pipe (400).

8. A pressure self-starting gas pipeline switch according to claim 1, characterized in that: The ash conveying pipe (100) is made of austenitic heat-resistant steel.

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