Energy-saving intelligent automatic air supply system for ash conveying pipeline and air supply method thereof

Abstract

The present invention relates to an energy-saving intelligent automatic air-filling system for an ash conveying pipeline and an air-filling method thereof, comprising an ash conveying pipeline, a silo pump and a main air source. A plurality of air-filling diaphragm valves are connected on the ash conveying pipeline. The air-filling diaphragm valve comprises a cylinder seat, upper and lower valve bodies and a check valve body. The cylinder seat is connected to a plug via a cylinder, the plug is connected to the cylinder via a spring, the plug blocks an exhaust pipe of the upper valve body, a through hole is provided in the upper valve body, a rubber diaphragm is connected between the upper and lower valve bodies to close the upper end of an inner air-filling pipe of the lower valve body, an air-filling port and a gas guide pipe are provided in the lower valve body, the gas guide pipe is connected to the upper valve body, the rubber diaphragm is connected to the upper valve body via a spring, a check valve core is connected to the lower end of the inner air-filling pipe via a spring to block the check valve body, and two sampling ports are provided on the check valve body to be respectively connected to the main body and two cylinders of adjacent air-filling diaphragm valves. The energy-saving intelligent automatic air-filling system for the ash conveying pipeline does not require an electrical or pressure control system, has a simple structure, good stability and low maintenance cost.

Description

Technical Field

[0001] The invention relates to an ash conveying system, and in particular to an energy-saving intelligent automatic air replenishing system for an ash conveying pipeline and an air replenishing method thereof. Background Art

[0002] In the ash conveying system, water is transported through the ash conveying pipeline. In order to continuously transport the ash in the ash conveying pipeline, it is necessary to connect an air supply valve on the ash conveying pipeline to continuously supply air to the ash conveying pipeline. The traditional air supply valve needs to be equipped with an electrical control system and a pressure control unit, which has a complex structure and control operation, and there is indiscriminate air supply, which consumes a large amount of gas. Summary of the invention

[0003] In view of the above shortcomings, the applicant has conducted research and improvement, and provided an energy-saving intelligent automatic air replenishment system for ash conveying pipelines and an air replenishment method thereof.

[0004] The technical solution adopted by the present invention is as follows:

[0005] An energy-saving intelligent automatic air-filling system for an ash conveying pipeline comprises an ash conveying pipeline, wherein the ash conveying pipeline is connected to a bin pump and a main air source, and a plurality of air-filling diaphragm valves are connected to the ash conveying pipeline, wherein the air-filling diaphragm valve comprises a cylinder seat, an upper valve body, a lower valve body and a check valve body connected from top to bottom, wherein the cylinder seat is connected to a cylinder, wherein a driving end of the cylinder is connected to a plug, and the plug is also connected to the cylinder through a plug reset spring, wherein the plug blocks an exhaust pipe provided on the upper valve body, and the upper valve body is also provided with a through hole communicating with the cylinder seat, wherein a rubber diaphragm is connected between the upper valve body and the lower valve body, and wherein the rubber diaphragm is placed at the upper end of an inner air-filling pipe provided on the lower valve body. A gas supply port is provided on one side of the lower valve body, a gas pilot pipe is provided on the gas supply port, the gas pilot pipe is connected with the upper valve body through the rubber diaphragm and the pilot through hole and the pilot groove provided on the upper valve body, the rubber diaphragm is connected with the upper valve body through the spring seat and the diaphragm reset spring, the check valve core is connected with the check valve core reset spring in the check valve body, the upper end of the check valve core blocks the lower end of the internal gas supply pipe, and two sampling ports are also provided on the check valve body, one of which is connected with the high-pressure inlet on the lower side of the cylinder, and the other is connected with the low-pressure inlet on the upper side of the cylinder of the adjacent gas supply diaphragm valve arranged close to the main gas source.

[0006] As a further improvement of the above technical solution:

[0007] The cylinder seat, the upper valve body, the lower valve body and the check valve body are connected by bolts.

[0008] The lower valve body is located at the lower end of the inner air supply pipe and is connected to a rubber sealing pad. The check valve core is pressed against the lower side of the rubber sealing pad by a check valve core reset spring.

[0009] A filter plate is arranged in the check valve body, and the filter plate is pressed and connected to the step in the check valve body through a gland connected to the lower end of the check valve body, and a sealing ring for sealing is arranged between the gland and the filter plate.

[0010] A method for replenishing air in an ash conveying pipeline comprises the following steps:

[0011] 1) Start conveying: open the valve on the lower side of the silo pump, start the main air source at the same time, and carry out the ash conveying operation. Initially, since the materials are concentrated in the ash conveying pipeline close to the silo pump, there is a pressure difference in the ash conveying pipeline as a whole. The pressure is high near the main air source and low away from the main air source. There is a large pressure difference between adjacent air supply diaphragm valves, and the pressure difference can be transmitted to the cylinder through the sampling port, which can drive the driving end of the cylinder and the plug to overcome the elastic force of the plug reset spring to rise, and then open the exhaust pipe to connect the upper valve body with the outside world. At this time, the air supply The inlet is connected to the air supply source, and air is supplied to the lower valve body through the air supply source. At the same time, the gas also enters the upper valve body through the gas pilot tube, the pilot through hole and the pilot groove, and is discharged through the through hole and the exhaust pipe. A pressure difference is generated between the upper valve body and the lower valve body. The gas in the lower valve body drives the rubber diaphragm to overcome the diaphragm reset spring to lift up, and the upper end of the internal air supply pipe can be opened, and the gas can enter the internal air supply pipe. The gas then drives the check valve core to overcome the elastic force of the check valve core reset spring to move downward, opening the lower end of the internal air supply pipe, and the gas enters the check valve body and finally replenishes the ash conveying pipeline;

[0012] 2) Fully mixed transportation: When the gas and ash are fully mixed for transportation, the pressure difference between the two adjacent air supply diaphragm valves is small, and the cylinder cannot overcome the elastic force of the plug reset spring. The plug can re-block the exhaust pipe under the action of the plug reset spring, and the upper valve body can be closed. At this time, the pressure between the upper valve body and the lower valve body is balanced, and the rubber diaphragm is reset under the action of the diaphragm reset spring, closing the upper end of the internal air supply pipe. At the same time, the check valve core also rises and resets under the action of the check valve core reset spring, closing the lower end of the internal air supply pipe, and the air supply operation can be stopped;

[0013] 3) Air replenishment when pipe is blocked: When the material is blocked in the ash conveying pipeline, the air replenishment diaphragm valve located before and after the blockage point will have a greater pressure difference. Under the action of the pressure difference, the plug can be driven up by the cylinder to open the exhaust pipe again, and the rubber diaphragm and the check valve core can be controlled to open again to replenish air. The blockage point can be broken through the air replenishment to solve the pipe blockage problem.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1) Through the pressure difference in the ash conveying pipeline, the cylinder movement is automatically controlled to achieve air supply and cut-off operations. No electrical control system and pressure control system are required. It has a simple structure, good stability and low maintenance cost.

[0016] 2) Automatically control the air supply through pressure difference, which can save air;

[0017] 3) A filter plate is installed inside the check valve body to prevent dust from invading the gas source pipeline and causing equipment failure;

[0018] 4) The check valve core is matched with a sealing rubber pad, which adopts a combination of soft and hard to enhance the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the installation of the energy-saving intelligent automatic air supply system for the ash conveying pipeline provided by the present invention.

[0020] Figure 2 A cross-sectional view of the air-replenishing diaphragm valve of the energy-saving intelligent automatic air-replenishing system for the ash conveying pipeline provided by the present invention.

[0021] Figure 3 This is a structural schematic diagram of the lower valve body of the energy-saving intelligent automatic air replenishment system for the ash conveying pipeline provided by the present invention.

[0022] Figure 4 This is a top view of the lower valve body of the energy-saving intelligent automatic air replenishment system for the ash conveying pipeline provided by the present invention.

[0023] Figure 5 A top view of the check valve body of the energy-saving intelligent automatic air replenishment system for the ash conveying pipeline provided by the present invention.

[0024] In the figure: 1. ash conveying pipeline; 2. silo pump; 3. main air source; 4. air supply diaphragm valve; 41. cylinder seat; 411. plug; 412. plug reset spring; 42. upper valve body; 421. exhaust pipe; 422. pilot groove; 423. through hole; 43. lower valve body; 431. internal air supply pipe; 432. air supply port; 433. gas pilot pipe; 434. rubber sealing gasket; 44. check valve body; 441. check valve core reset spring; 442. check valve core; 443. sampling port; 444. filter plate; 445. sealing ring; 45. cylinder; 451. high pressure inlet; 452. low pressure inlet; 46. rubber diaphragm; 461. pilot through hole; 462. spring seat; 463. diaphragm reset spring; 47. gland. DETAILED DESCRIPTION

[0025] The specific implementation of this embodiment is described below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 5As shown, the energy-saving intelligent automatic air supply system for the ash conveying pipeline of this embodiment includes an ash conveying pipeline 1, which is connected to a bin pump 2 and a main air source 3. A plurality of air supply diaphragm valves 4 are connected to the ash conveying pipeline 1. The air supply diaphragm valve 4 includes a cylinder seat 41, an upper valve body 42, a lower valve body 43 and a check valve body 44 connected from top to bottom by bolts. The cylinder seat 41 is connected to a cylinder 45. The driving end of the cylinder 45 is connected to a plug 411, and the plug 411 is also connected to the cylinder 45 through a plug reset spring 412. The plug 411 blocks an exhaust pipe 421 provided on the upper valve body 42, and the upper valve body 42 is also provided with a through hole 423 communicating with the cylinder seat 41. A rubber diaphragm 46 is connected between the upper valve body 42 and the lower valve body 43. The rubber diaphragm 46 is placed on the upper end of an inner air supply pipe 431 provided on the lower valve body 43. A gas replenishment port 432 is provided on one side of the valve body 43, and a gas pilot pipe 433 is provided on the gas replenishment port 432. The gas pilot pipe 433 is connected to the upper valve body 42 through a rubber diaphragm 46 and a pilot through hole 461 and a pilot groove 422 provided on the upper valve body 42. The rubber diaphragm 46 is connected to the upper valve body 42 through a spring seat 462 and a diaphragm return spring 463. The check valve core 442 is connected to the check valve body 44 through a check valve core return spring 441. The upper end of the check valve core 442 blocks the lower end of the internal gas replenishment pipe 431. Two sampling ports 443 are also provided on the check valve body 44, one of which is connected to a high-pressure inlet 451 on the lower side of the cylinder 45, and the other sampling port 443 is connected to a low-pressure inlet 452 on the upper side of the cylinder 45 of the adjacent gas replenishment diaphragm valve 4 arranged close to the main gas source 3.

[0027] The lower valve body 43 is located at the lower end of the internal air supply pipe 431 and is connected to the rubber sealing gasket 434. The check valve core 442 is pressed against the lower side of the rubber sealing gasket 434 by the check valve core reset spring 441. The rubber sealing gasket 434 cooperates with the check valve core 442 to achieve sealing of the lower end of the internal air supply pipe 431. The combination of soft and hard parts enhances the sealing performance.

[0028] A filter plate 444 is arranged in the check valve body 44, and the filter plate 444 is pressed and connected to the step in the check valve body 44 through a pressure cover 47 connected to the lower end of the check valve body 44, and a sealing ring 445 for sealing is arranged between the pressure cover 47 and the filter plate 444. The filter plate 444 can prevent the ash in the ash conveying pipeline 1 from invading the air supply diaphragm valve 4 and the air source pipeline, causing equipment failure.

[0029] The air supply method of the energy-saving intelligent automatic air supply system for the ash conveying pipeline of this embodiment includes the following steps:

[0030] 1) Start conveying: open the valve on the lower side of the silo pump 2, and start the main air source 3 at the same time to carry out the ash conveying operation. Initially, since the materials are concentrated in the ash conveying pipeline 1 close to the silo pump 2, there is a pressure difference in the ash conveying pipeline 1 as a whole. The pressure is high near the main air source 3, and the pressure is low away from the main air source 3. There is a large pressure difference between the adjacent air supply diaphragm valves 4, and the pressure difference can be transmitted to the cylinder 45 through the sampling port 443, which can drive the driving end of the cylinder 45 and the plug 411 to overcome the elastic force of the plug reset spring 412 to rise, and then open the exhaust pipe 421 to connect the interior of the upper valve body 42 with the outside world. At this time, the air supply port 432 is connected to the air supply source, and through The air supply source supplies air into the lower valve body 43, and at the same time, the gas also enters the upper valve body 42 through the gas pilot tube 433, the pilot through hole 461 and the pilot groove 422, and is discharged through the through hole 423 and the exhaust pipe 421. A pressure difference is generated between the upper valve body 42 and the lower valve body 43, and the gas in the lower valve body 43 drives the rubber diaphragm 46 to overcome the diaphragm return spring 463 to lift up, so that the upper end of the inner air supply pipe 431 can be opened, and the gas can enter the inner air supply pipe 431. The gas then drives the check valve core 442 to overcome the elastic force of the check valve core return spring 441 to move downward, opening the lower end of the inner air supply pipe 431, and the gas enters the check valve body 44, and finally replenishes the ash conveying pipeline 1;

[0031] 2) Fully mixed transportation: When the gas and ash are fully mixed for transportation, the pressure difference between the two adjacent air supply diaphragm valves 4 is small, and the cylinder 45 cannot overcome the elastic force of the plug reset spring 412. The plug 411 can re-block the exhaust pipe 421 under the action of the plug reset spring 412, and the upper valve body 42 can be closed. At this time, the pressure between the upper valve body 42 and the lower valve body 43 is balanced, and the rubber diaphragm 46 is reset under the action of the diaphragm reset spring 463, closing the upper end of the inner air supply pipe 431. At the same time, the check valve core 442 also rises and resets under the action of the check valve core reset spring 441, closing the lower end of the inner air supply pipe 431, and the air supply operation can be stopped;

[0032] 3) Air replenishment when pipe is blocked: When material occurs to be blocked in the ash conveying pipeline 1, there will be an increased pressure difference between the air replenishment diaphragm valve 4 located before and after the blockage point. Under the action of the pressure difference, the plug 411 can be driven up by the cylinder 45 to open the exhaust pipe 421 again, and the rubber diaphragm 46 and the check valve core 442 can be controlled to open again to perform air replenishment operation. The blockage point can be broken through by air replenishment to solve the pipe blockage problem.

[0033] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. The present invention may be modified in any form without violating the basic structure of the present invention.

Claims

1. An energy-saving intelligent automatic air supply system for an ash conveying pipeline, comprising an ash conveying pipeline (1), wherein the ash conveying pipeline (1) is connected to a silo pump (2) and a main air source (3), and is characterized in that: The ash conveying pipeline (1) is connected to a plurality of air-infusing diaphragm valves (4), the air-infusing diaphragm valves (4) comprising a cylinder seat (41), an upper valve body (42), a lower valve body (43) and a check valve body (44) connected from top to bottom, the cylinder seat (41) being connected to a cylinder (45), the driving end of the cylinder (45) being connected to a plug (411), and the plug (411) being further connected to the cylinder (45) via a plug return spring (412), the plug (411) being connected to the cylinder (45) via a plug return spring (412), and the plug (411) being connected to the cylinder (45) via a plug return spring (412). 11) The exhaust pipe (421) provided on the upper valve body (42) is blocked, and the upper valve body (42) is further provided with a through hole (423) communicating with the cylinder seat (41), a rubber diaphragm (46) is connected between the upper valve body (42) and the lower valve body (43), and the rubber diaphragm (46) is placed on the upper end of the internal air supply pipe (431) provided on the lower valve body (43), and an air supply port (432) is provided on one side of the lower valve body (43), and the air supply port (432) A gas pilot conduit (433) is provided on the upper portion of the rubber diaphragm (46), the gas pilot conduit (433) being connected to the upper valve body (42) through a pilot through hole (461) provided on the rubber diaphragm (46) and a pilot groove (422) provided on the upper valve body (42), the rubber diaphragm (46) being connected to the upper valve body (42) through a spring seat (462) and a diaphragm return spring (463), and the check valve body (44) being connected to the check valve core return spring (441). A check valve core (442), the upper end of which blocks the lower end of the internal air supply pipe (431), and two sampling ports (443) are provided on the check valve body (44), one of which is connected to a high-pressure inlet (451) on the lower side of the cylinder (45), and the other of which is connected to a low-pressure inlet (452) on the upper side of the cylinder (45) of an adjacent air supply diaphragm valve (4) arranged close to the main air source (3).

2. The energy-saving intelligent automatic air supply system for ash conveying pipeline according to claim 1 is characterized in that: The cylinder seat (41), the upper valve body (42), the lower valve body (43) and the check valve body (44) are connected by bolts.

3. The energy-saving intelligent automatic air supply system for ash conveying pipeline according to claim 1 is characterized in that: The lower valve body (43) is located at the lower end of the inner air supply pipe (431) and is connected to a rubber sealing pad (434). The check valve core (442) is pressed against the lower side of the rubber sealing pad (434) by a check valve core return spring (441).

4. The energy-saving intelligent automatic air supply system for ash conveying pipeline according to claim 1 is characterized in that: A filter plate (444) is disposed in the check valve body (44); the filter plate (444) is pressed and connected to a step in the check valve body (44) through a gland (47) connected to the lower end of the check valve body (44); and a sealing ring (445) for sealing is disposed between the gland (47) and the filter plate (444).

5. The air supply method of the energy-saving intelligent automatic air supply system for ash conveying pipeline according to claim 1 comprises the following steps: 1) Start conveying: Open the valve on the lower side of the silo pump (2) and start the main air source (3) at the same time to carry out the ash conveying operation. Initially, since the materials are concentrated at one end of the ash conveying pipeline (1) close to the silo pump (2), there is a pressure difference in the ash conveying pipeline (1) as a whole. The pressure is high near the main air source (3) and low far from the main air source (3). There is a large pressure difference between adjacent air supply diaphragm valves (4). The pressure difference can be transmitted to the cylinder (45) through the sampling port (443), and the driving end of the cylinder (45) and the plug (411) can be driven to rise to overcome the elastic force of the plug return spring (412), so that the exhaust pipe (421) can be opened to connect the interior of the upper valve body (42) with the outside world. At this time, the air supply port (432) is connected to the air supply source, and the air supply gas is passed through the air supply port (432). The gas source supplies gas to the lower valve body (43). At the same time, the gas also enters the upper valve body (42) through the gas pilot tube (433), the pilot through hole (461) and the pilot groove (422), and is discharged through the through hole (423) and the exhaust pipe (421). A pressure difference is generated between the upper valve body (42) and the lower valve body (43). The gas in the lower valve body (43) drives the rubber diaphragm (46) to overcome the diaphragm return spring (463) to lift up, thereby opening the upper end of the internal gas supply pipe (431). The gas can then enter the internal gas supply pipe (431). The gas then drives the check valve core (442) to overcome the elastic force of the check valve core return spring (441) to move downward, thereby opening the lower end of the internal gas supply pipe (431). The gas enters the check valve body (44) and is finally replenished into the ash conveying pipeline (1). 2) Fully mixed transportation: When the gas and ash are fully mixed for transportation, the pressure difference between the two adjacent air supply diaphragm valves (4) is small, and the cylinder (45) cannot overcome the elastic force of the plug return spring (412). The plug (411) can re-block the exhaust pipe (421) under the action of the plug return spring (412), and the upper valve body (42) can be closed. At this time, the pressure between the upper valve body (42) and the lower valve body (43) is balanced, and the rubber diaphragm (46) is reset under the action of the diaphragm reset spring (463), closing the upper end of the internal air supply pipe (431). At the same time, the check valve core (442) also rises and resets under the action of the check valve core reset spring (441), closing the lower end of the internal air supply pipe (431), and the air supply operation can be stopped; 3) Air replenishment in case of pipe blockage: When material occurs in the ash conveying pipeline (1) and is blocked, the air replenishment diaphragm valve (4) located before and after the blockage point will have a greater pressure difference. Under the action of the pressure difference, the plug (411) can be driven up by the cylinder (45) to open the exhaust pipe (421) again, and the rubber diaphragm (46) and the check valve core (442) can be controlled to open again to perform air replenishment operation. The blockage point can be broken through the air replenishment to solve the pipe blockage problem.

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