A node valve assembly for cleaning control of a pipe chain conveyor pipeline

Abstract

The present invention discloses a node valve assembly for cleaning and controlling the material conveying pipeline of a pipe chain machine, comprising a valve body, transition connecting pipes respectively arranged on both sides of the valve body for being connected in series with the material conveying pipeline, a through hole transversely arranged on the valve body relative to the axis of the transition connecting pipe and connected with the transition connecting pipe, a pair of valve covers respectively and detachably installed at both ends of the through hole, a pair of valve blocks respectively arranged on one side of the pair of valve covers and sealingly matched with the inner wall of the through hole, and a mating block arranged at the front end of the valve block, the mating blocks at the front end of the pair of valve blocks are mutually abutted and mated along the axial direction of the through hole, and semicircular holes for sealing and pressing the internal chain of the material conveying pipeline are respectively arranged on the mating surfaces of the mating blocks at the front end of the pair of valve blocks, and after the mating blocks at the front end of the pair of valve blocks are mated with each other, the logistics channels between the transition connecting pipes on both sides of the valve body are separated at the valve block, forming a closed state of the node valve assembly. The present invention facilitates the cleaning and maintenance of the material conveying pipeline of the pipe chain machine.

Description

Technical Field

[0001] The invention relates to the technical field of pipe chain machine cleaning, and in particular to a node valve assembly used for cleaning control of a pipe chain machine feed pipeline. Background Art

[0002] The tube chain machine is a device that uses a chain as a traction tool to transport powdered materials, granular materials or block materials in a pipeline. The chain of the tube chain machine is built into the pipeline, and a number of scraper plates are arranged at intervals on the chain. A space for material transportation is formed between two adjacent scraper plates. A feeding node and a discharging node are arranged on the pipeline. Through the traction of the chain, the material can be transported from the feeding node to the discharging node. The tube chain machine is usually also provided with a tensioning box and a transmission box. A pair of conveying pipes are connected between the tensioning box and the transmission box. The chain is a closed chain. The two ends of the closed chain are respectively meshed and connected with the sprocket assemblies in the tensioning box and the transmission box.

[0003] For some special applications, it may involve the replacement of conveying materials. Therefore, the conveying pipeline of the tube chain machine must be cleaned before the material is replaced. In addition, even if the material is not replaced, the internal material of the tube chain machine will stick and clog after a long period of use. At this time, the cleaning and maintenance of the tube chain machine is also required.

[0004] However, the existing tube chain machines still have disadvantages such as difficulty in cleaning and maintenance and cumbersome cleaning operations. If the tube chain machine needs to be cleaned more thoroughly, it is usually necessary to disassemble the machine for cleaning, which results in a long cleaning and maintenance cycle.

[0005] Therefore, it is necessary to develop a tube chain machine and related technologies that can avoid large-scale disassembly, reduce the workload of cleaning and maintenance, and shorten the cleaning and maintenance cycle in response to the above problems. Summary of the invention

[0006] In order to solve the above problems, the present invention proposes a node valve assembly for cleaning control of a pipe chain machine feed pipeline, aiming to facilitate cleaning and maintenance of the pipe chain machine feed pipeline. The specific technical solution is as follows:

[0007] A node valve assembly for controlling the cleaning of a pipe chain machine feed pipeline, comprising a valve body, transition connecting pipes respectively arranged on both sides of the valve body for being connected in series with the feed pipeline, a through hole transversely arranged on the valve body relative to the axis of the transition connecting pipe and connected to the transition connecting pipe, a pair of valve covers respectively and detachably mounted at both ends of the through hole, a pair of valve blocks respectively arranged on one side of the pair of valve covers and sealingly matched with the inner wall of the through hole, and a mating block arranged at the front end of the valve block, the mating blocks at the front end of the pair of valve blocks being abutted against each other along the axial direction of the through hole, and semicircular holes for sealing the internal chain of the feed pipeline are respectively arranged on the mutual mating surfaces of the mating blocks at the front end of the pair of valve blocks, and after the mating blocks at the front end of the pair of valve blocks are mated with each other, the logistics channel between the transition connecting pipes on both sides of the valve body is separated at the valve block, forming a closed state of the node valve assembly.

[0008] Preferably, a pair of flow channel adapter blocks are correspondingly provided on the other side of the pair of valve covers, and an inner arc surface is provided on the side of the flow channel adapter block away from the valve cover. When the valve cover is flipped 180 degrees and reversely installed to the through hole, the pair of flow channel adapter blocks are aligned with each other and at the point where the pair of flow channel adapter blocks are aligned with each other, the inner arc surfaces on the pair of flow channel adapter blocks form a flow channel with an equal diameter that is the same as the inner diameter of the transition connecting pipe, thereby forming an open state of the node valve assembly.

[0009] In the present invention, the transition connecting pipe is connected in series to the feed pipeline via a valve body mounting flange; cleaning interfaces for connecting to a circulating cleaning system are respectively provided on the transition connecting pipe on both sides of the valve body, and removable plugs are provided on the cleaning interfaces.

[0010] As a further improvement of the present invention, an ultrasonic cleaning device is also provided on the valve cover, and the ultrasonic cleaning device includes an elastic buffer block, a vibrator mounting plate and an ultrasonic vibrator which are sequentially connected between the valve cover and the flow channel adapter block. The cable of the ultrasonic vibrator is led out from the valve cover and then connected to an external ultrasonic generator.

[0011] Note that after the ultrasonic cleaning device is installed between the valve cover and the flow channel adapter block, the valve cover and the flow channel adapter block are actually completely separated by the elastic buffer block and the vibrator mounting plate. Therefore, when the ultrasonic vibrator vibrates, its vibration energy is mainly concentrated on the flow channel adapter block.

[0012] Preferably, a seat hole is provided on the flow channel adapter block, and the ultrasonic vibrator is built into the seat hole of the flow channel adapter block and is packaged inside the seat hole through the vibrator mounting plate.

[0013] Preferably, the elastic buffer block is a rubber elastic buffer block.

[0014] Preferably, only one of the pair of flow channel adapter blocks needs to be provided with an ultrasonic cleaning device. The flow channel adapter block provided with the ultrasonic cleaning device is clearance-fitted with the through hole on the valve body, and does not contact the through hole, which is conducive to maximizing the effect of ultrasonic energy on the cleaning liquid in the feed pipe.

[0015] Preferably, the ultrasonic cleaning device can also be arranged between the mating block at the front end of the valve block and the valve block, and includes an elastic buffer block, a vibrator mounting plate and an ultrasonic vibrator connected in sequence between the valve block and the mating block. The cable of the ultrasonic vibrator is led out from the valve cover and then connected to an external ultrasonic generator.

[0016] Note that after the ultrasonic cleaning device is installed on the valve block, the valve block and the mating block are actually completely separated by the elastic buffer block and the vibrator mounting plate. Therefore, when the ultrasonic vibrator vibrates, its vibration energy is mainly concentrated on the mating block.

[0017] Preferably, a seat hole is provided on the mating block, the ultrasonic vibrator is built into the seat hole of the mating block, and is packaged inside the seat hole of the mating block through the vibrator mounting plate.

[0018] Preferably, only one of the valve blocks in a pair of valve blocks needs to be provided with an ultrasonic cleaning device.

[0019] Preferably, the circulating cleaning system comprises a cleaning tank, a circulating pump connected to the cleaning tank, a liquid inlet pipeline arranged at an outlet of the circulating pump, and a liquid return pipeline arranged on the cleaning tank.

[0020] Among them, one of the cleaning interfaces on the valve body is connected to the circulation pump through the liquid inlet pipeline, and another cleaning interface on the valve body is connected to the cleaning tank through the liquid return pipeline.

[0021] In the present invention, a filter screen is arranged in the cleaning pool, and the filter screen divides the cleaning pool into a dirt retaining chamber and a liquid supply chamber. The circulating pump is connected to the liquid supply chamber of the cleaning pool, and the liquid return pipeline is connected to the dirt retaining chamber of the cleaning pool.

[0022] In the present invention, the circulating pump is a high-pressure circulating pump.

[0023] Preferably, a sealing ring is provided between the valve block and the through hole.

[0024] Preferably, the pair of valve blocks are embedded with sealing strips along the semicircular holes and the mating surfaces.

[0025] In the present invention, scraper plates are arranged at intervals on the chain inside the material conveying pipeline of the tube chain machine, and a distance is set between the outer edge of the scraper plate and the inner wall of the material conveying pipeline.

[0026] Preferably, the through hole on the valve body is a through hole with a rectangular cross-section, and the through hole is formed by wire cutting.

[0027] The node valve assembly for cleaning control of a pipe chain machine feed pipeline of the present invention can be arranged singly or in plurality on the feed pipeline, and can realize cleaning when the node valve assembly is closed or open according to different cleaning requirements, with good flexibility.

[0028] In the present invention, the forward and reverse installation modes of the valve body determine two different cleaning methods.

[0029] The cleaning method of the present invention when a single node valve assembly is closed is as follows:

[0030] The feeding hopper mouth and the discharge port of the tube chain machine are sealed with sealing plates in advance, so that an annular sealed channel structure is formed inside the tube chain machine; the circulating cleaning system is connected to a pair of cleaning interfaces on the node valve assembly, and the circulating pump is turned on to allow the cleaning liquid to circulate between the inside of the tube chain machine and the circulating pump (the cleaning liquid circulates through the gap between the scraper plate and the inner wall of the feed pipeline), and the ultrasonic cleaning device on the valve block is turned on. The ultrasonic vibrator drives the chain inside the feed pipeline to vibrate together, so that the ultrasonic vibration energy is transmitted to various places inside the feed pipeline through the chain, stimulating cavitation of the cleaning liquid, and realizing ultrasonic circulation cleaning inside the feed pipeline.

[0031] The node valve assembly of the present invention is set to the cleaning method in the open state as follows:

[0032] The feeding hopper mouth and the discharge port of the tube chain machine are sealed with sealing plates in advance, so that an annular sealing channel structure is formed inside the tube chain machine; the node valve assembly is set to a closed state so that the annular sealing channel is separated at the node valve assembly; the liquid inlet pipeline and the liquid return pipeline of the circulating cleaning system are respectively connected to the tensioning box and the transmission box of the tube chain machine, so that a cleaning circulation loop is formed between a pair of feed pipes between the tensioning box and the transmission box and the circulating pump (at this time, a pair of feed pipes are arranged in parallel in the cleaning circulation loop, and the cleaning liquid inside them moves in the same direction); the tube chain machine is turned on so that the chain of the tube chain machine circulates in the feed pipe, and the ultrasonic cleaning device on the flow channel adapter block is turned on, and the ultrasonic vibration energy of the ultrasonic vibrator is directly transmitted to the cleaning liquid circulating inside the feed pipe, so as to realize ultrasonic circulation cleaning inside the feed pipe.

[0033] Note that in order to achieve a comprehensive cleaning effect, the large parts of the tube chain machine (tensioner box, transmission box, unloading box and feeding hopper, etc.) need to be disassembled and manually pre-cleaned. After pre-cleaning, the node valve assembly and circulating cleaning system are used to perform the above two circulating cleaning methods.

[0034] When multiple node valve assemblies are provided on the feed pipeline, the liquid inlet pipeline and the liquid return pipeline of the circulating cleaning system can be connected to the cleaning interfaces of two adjacent node valve assemblies respectively, the two adjacent node valve assemblies are set to a closed state, and the circulating pump and the ultrasonic cleaning device on the valve block are turned on to realize ultrasonic forced circulation cleaning inside the feed pipeline between the two adjacent node valve assemblies.

[0035] The beneficial effects of the present invention are:

[0036] First, a node valve assembly for cleaning control of a feed pipeline of a tube chain machine according to the present invention can be arranged on the feed pipeline of the tube chain machine to control the closing and opening of the feed pipeline at the node; and by connecting the cleaning interface arranged on the node valve assembly with the circulating cleaning system, the cleaning inside the feed pipeline can be realized; a plurality of node valve assemblies can be arranged on the feed pipeline, so that the circulating cleaning inside the feed pipeline between any nodes can be controlled, thereby reducing the pressure loss of the cleaning liquid in the feed pipeline and improving the cleaning effect.

[0037] Secondly, the node valve assembly for cleaning control of a pipe chain machine feed pipeline of the present invention can realize cleaning when the node valve assembly is closed or open according to different cleaning requirements, and has good flexibility.

[0038] Third, the present invention is a node valve assembly for controlling the cleaning of a feed pipeline of a tube chain machine. When the node valve assembly is set to an open state for dynamic ultrasonic cycle cleaning, the ultrasonic cleaning device can transmit the energy of ultrasonic vibration to the cleaning liquid flowing in the feed pipeline, thereby realizing comprehensive ultrasonic cleaning in the feed pipeline; during dynamic ultrasonic cycle cleaning, the chain transmission system of the tube chain machine is turned on, so that the chain with the scraper plate can be ultrasonically cleaned while moving in the feed pipeline, which is beneficial to completely remove the sticky materials on the chain and the scraper plate, thereby improving the cleaning quality of the entire chain and the scraper plate.

[0039] Third, the node valve assembly of the present invention is used for the cleaning control of the feed pipeline of a pipe-chain machine. When the node valve assembly is set to a closed state for static ultrasonic cycle cleaning, a pair of engaging blocks on the ultrasonic cleaning device can not only seal and press the chain, but also drive the chain to vibrate ultrasonically, thereby improving the global ultrasonic cleaning ability in the feed pipeline, thereby further improving the thoroughness of the ultrasonic cycle cleaning inside the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1It is a structural schematic diagram of a node valve assembly for cleaning control of a pipe chain machine feed pipeline of the present invention;

[0041] Figure 2 yes Figure 1 A schematic diagram of the structure in which the mating blocks at the front ends of a pair of valve blocks are mating with each other (left view);

[0042] Figure 3 Yes Figure 1 A schematic diagram of the structure of a pair of valve bodies after being turned 180 degrees and installed in reverse;

[0043] Figure 4 yes Figure 3 A schematic diagram of the structure in which a pair of flow channel adapter blocks are engaged with each other (left view);

[0044] Figure 5 It is a schematic diagram of the arrangement of the pipe chain machine and the node valve assembly on the pipe chain machine (the node valve assembly is arranged in series at the node X position of the conveying pipeline).

[0045] In the figure: 01, tension box, 05, chain, 29, conveying pipeline, 30, scraper plate, 31, tension box cover, 32, automatic unloading device, 33, unloading box body, 34, unloading port, 44, unloading box cover, 51, conveying pipeline turning guide structure, 53, round box body;

[0046] In the figure: 75, valve body, 76, transition connecting pipe, 77, through hole, 78, valve cover, 79, valve block, 79-1, matching block, 80, semicircular hole, 81, flow channel adapter block, 82, inner arc surface, 83, valve body mounting flange, 84, circulation cleaning system, 85, cleaning interface, 86, ultrasonic cleaning device, 87, elastic buffer block, 88, vibrator mounting plate, 89, ultrasonic vibrator, 90, cleaning tank, 91, circulation pump, 92, liquid inlet pipeline, 93, liquid return pipeline, 94, filter screen, 95, dirt retaining chamber, 96, liquid supply chamber.

[0047] In the figure: 97, feeding device, 98, feeding hopper, 99, feeding hopper sealing plate, 100, discharge port sealing plate, 101, transmission box cover, 102, transmission box.

[0048] In the figure: X is a node set on the material conveying pipeline. DETAILED DESCRIPTION

[0049] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0050] like Figures 1 to 5The figure shows an embodiment of a node valve assembly for cleaning control of a pipe chain conveyor pipeline of the present invention, comprising a valve body 75, transition connecting pipes 76 respectively arranged on both sides of the valve body 75 for being connected in series with the conveying pipeline 29, a through hole 77 arranged transversely on the valve body 75 relative to the axis of the transition connecting pipe 76 and connected to the transition connecting pipe 76, a pair of valve covers 78 respectively detachably mounted on both ends of the through hole 77, and a pair of valve blocks 77 respectively arranged on one side of the pair of valve covers 78 and sealingly matched with the inner wall of the through hole 77. 9. The mating blocks 79-1 arranged at the front end of the valve block 79, the mating blocks 79-1 at the front end of the pair of valve blocks 79 are abutted against each other along the axial direction of the through hole 77, and semicircular holes 80 for sealing the internal chain 05 of the feed pipeline 29 are respectively arranged on the mating surfaces of the mating blocks 79-1 at the front end of the pair of valve blocks 79. After the mating blocks 79-1 at the front end of the pair of valve blocks 79 are mated with each other, the logistics channel between the transition connecting pipes 76 on both sides of the valve body 75 is separated at the valve block 79, forming a closed state of the node valve assembly.

[0051] Preferably, a pair of flow channel adapter blocks 81 are correspondingly provided on the other side of the pair of valve covers 78, and an inner arc surface 82 is provided on the side of the flow channel adapter block 81 away from the valve cover 78. When the valve cover 78 is flipped 180 degrees and reversely installed to the through hole 77, the pair of flow channel adapter blocks 81 are aligned with each other and at the position where the pair of flow channel adapter blocks 81 are aligned with each other, the inner arc surfaces 82 on the pair of flow channel adapter blocks 81 form a flow channel with an equal diameter that is the same as the inner diameter of the transition connecting pipe 76, thereby forming an open state of the node valve assembly.

[0052] In this embodiment, the transition connecting pipe 76 is connected in series to the feed pipeline 29 via a valve body mounting flange 83; cleaning interfaces 85 for connecting to a circulating cleaning system 84 are respectively provided on the transition connecting pipe 76 on both sides of the valve body 75, and a removable plug is provided on the cleaning interface 85.

[0053] As a further improvement of the present invention, an ultrasonic cleaning device 86 is also provided on the valve cover 78, and the ultrasonic cleaning device 86 includes an elastic buffer block 87, a vibrator mounting plate 88 and an ultrasonic vibrator 89 which are sequentially connected between the valve cover 78 and the flow channel adapter block 81. The cable of the ultrasonic vibrator 89 is led out from the valve cover 78 and then connected to an external ultrasonic generator.

[0054] Note that after the ultrasonic cleaning device 86 is installed between the valve cover 78 and the flow channel adapter block 81, the valve cover 78 and the flow channel adapter block 81 are actually completely separated by the elastic buffer block 87 and the vibrator mounting plate 88. Therefore, when the ultrasonic vibrator 89 vibrates, its vibration energy is mainly concentrated on the flow channel adapter block 81.

[0055] Preferably, a seat hole is provided on the flow channel adapter block 81 , and the ultrasonic vibrator 89 is built into the seat hole of the flow channel adapter block 81 and is packaged inside the seat hole through the vibrator mounting plate 88 .

[0056] Preferably, the elastic buffer block 87 is a rubber elastic buffer block.

[0057] Preferably, only one of the pair of flow channel adapter blocks 81 is provided with the ultrasonic cleaning device 86. The flow channel adapter block 81 provided with the ultrasonic cleaning device 86 is clearance-fitted with the through hole 77 on the valve body 75, and does not contact the through hole 77, which is conducive to the maximum effect of ultrasonic energy on the cleaning liquid in the conveying pipeline 29.

[0058] Preferably, the ultrasonic cleaning device 86 can also be arranged between the mating block 79-1 at the front end of the valve block 79 and the valve block 79, which includes an elastic buffer block 87, a vibrator mounting plate 88 and an ultrasonic vibrator 89 which are sequentially connected between the valve block 79 and the mating block 79-1. The cable of the ultrasonic vibrator 89 is led out from the valve cover 78 and then connected to an external ultrasonic generator.

[0059] Note that after the ultrasonic cleaning device 86 is installed on the valve block 75, the valve block 79 and the mating block 79-1 are actually completely separated by the elastic buffer block 87 and the vibrator mounting plate 88. Therefore, when the ultrasonic vibrator 89 vibrates, its vibration energy is mainly concentrated on the mating block 79-1.

[0060] Preferably, a seat hole is provided on the mating block 79 - 1 , and the ultrasonic vibrator 89 is built into the seat hole of the mating block 79 - 1 , and is packaged inside the seat hole of the mating block 79 - 1 through the vibrator mounting plate 88 .

[0061] Preferably, the ultrasonic cleaning device 86 is only required to be disposed on one of the valve blocks 79 in the pair of valve blocks 79 .

[0062] Preferably, the circulating cleaning system 84 includes a cleaning tank 90 , a circulating pump 91 connected to the cleaning tank 90 , a liquid inlet pipeline 92 arranged at the outlet of the circulating pump 91 , and a liquid return pipeline 92 arranged on the cleaning tank 90 .

[0063] Among them, one of the cleaning interfaces 85 on the valve body 75 is connected to the circulation pump 91 through the liquid inlet pipeline 92, and another cleaning interface 85 on the valve body 75 is connected to the cleaning tank 90 through the liquid return pipeline 94.

[0064] In this embodiment, a filter screen 94 is provided in the cleaning pool 90, and the filter screen 94 divides the cleaning pool 90 into a dirt retaining chamber 95 and a liquid supply chamber 96. The circulating pump 91 is connected to the liquid supply chamber 96 of the cleaning pool 90, and the return liquid pipeline 93 is connected to the dirt retaining chamber 95 of the cleaning pool 90.

[0065] In this embodiment, the circulation pump 91 is a high-pressure circulation pump.

[0066] Preferably, a sealing ring is provided between the valve block 79 and the through hole 77 .

[0067] Preferably, the pair of valve blocks 79 are embedded with sealing strips along the semicircular holes 80 and the mating surfaces thereof.

[0068] In this embodiment, scraper plates 30 are arranged at intervals on the chain 05 inside the material conveying pipeline 29 of the tube chain machine, and a distance is set between the outer edge of the scraper plate 30 and the inner wall of the material conveying pipeline 29.

[0069] Preferably, the through hole 77 on the valve body 75 is a through hole 77 with a rectangular cross-section, and the through hole 77 is formed by wire cutting.

[0070] A node valve assembly for cleaning control of a pipe chain machine feed pipeline in this embodiment can be provided singly or multiple times on the feed pipeline 29, and can realize cleaning with the node valve assembly closed or open according to different cleaning requirements, with good flexibility.

[0071] In this embodiment, the forward and reverse installation modes of the valve body 75 determine two different cleaning methods.

[0072] In this embodiment, the cleaning method when a single node valve assembly is closed is as follows:

[0073] The feeding hopper mouth and the discharge port of the tube chain machine are pre-sealed with sealing plates to form an annular sealed channel structure inside the tube chain machine; the node valve assembly is set to a closed state so that the annular sealed channel is separated at the node valve assembly; the circulating cleaning system 84 is connected to a pair of cleaning interfaces 85 on the node valve assembly, and the circulating pump 91 is turned on to allow the cleaning liquid to circulate between the inside of the tube chain machine and the circulating pump 91 (the cleaning liquid circulates through the gap between the scraper plate 30 and the inner wall of the feed pipeline 29), and the ultrasonic cleaning device 86 on the valve block 79 is turned on. The ultrasonic vibrator 89 drives the chain 05 inside the feed pipeline 29 to vibrate together, so that the ultrasonic vibration energy is transmitted to various places inside the feed pipeline 29 through the chain 05, thereby stimulating cavitation of the cleaning liquid and realizing ultrasonic circulation cleaning inside the feed pipeline 29.

[0074] The cleaning method of the node valve assembly in this embodiment is set to the open state as follows:

[0075] The feeding hopper 98 and the discharge port 34 of the tube chain machine are sealed with sealing plates in advance, so that an annular sealed channel structure is formed inside the tube chain machine; the node valve assembly is set to a closed state so that the annular sealed channel is separated at the node valve assembly; the liquid inlet pipeline 92 and the liquid return pipeline 93 of the circulating cleaning system 84 are respectively connected to the tensioning box and the transmission box of the tube chain machine, so that a cleaning circulation loop is formed between a pair of feed pipes 29 between the tensioning box 01 and the transmission box 102 and the circulating pump 91 (at this time, a pair of feed pipes 29 are arranged in parallel in the cleaning circulation loop, and the cleaning liquid inside them moves in the same direction); the tube chain machine is turned on so that the chain 05 of the tube chain machine circulates in the feed pipe 29, and the ultrasonic cleaning device 86 on the flow channel adapter block 81 is turned on, and the ultrasonic vibration energy of the ultrasonic vibrator 89 is directly transmitted to the cleaning liquid circulating inside the feed pipe 29, so as to realize ultrasonic circulation cleaning inside the feed pipe.

[0076] Note that in order to achieve a comprehensive cleaning effect, the large parts of the tube chain machine (tensioning box 01, transmission box 102, unloading box 33 and feeding hopper 98, etc.) need to be disassembled and manually pre-cleaned. After pre-cleaning, the node valve assembly and circulating cleaning system 84 are used to perform the above two circulating cleaning methods.

[0077] When multiple node valve assemblies are provided on the feed pipeline 29, the liquid inlet pipeline 92 and the liquid return pipeline 93 of the circulating cleaning system 84 can be connected to the cleaning interfaces 85 of two adjacent node valve assemblies respectively, the two adjacent node valve assemblies are set to a closed state, and the circulating pump 91 and the ultrasonic cleaning device 86 on the valve block 79 are turned on to realize ultrasonic forced circulation cleaning inside the feed pipeline 29 between the two adjacent node valve assemblies.

[0078] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A node valve assembly for cleaning control of a pipe chain conveyor pipeline, characterized in that: The valve body comprises a valve body, transition connecting pipes respectively arranged on both sides of the valve body for being connected in series with a material conveying pipeline, a through hole transversely arranged on the valve body relative to the axis of the transition connecting pipe and connected to the transition connecting pipe, a pair of valve covers respectively and detachably mounted on both ends of the through hole, a pair of valve blocks respectively arranged on one side of the pair of valve covers and sealingly matched with the inner wall of the through hole, and a mating block arranged at the front end of the valve block, the mating blocks at the front end of the pair of valve blocks are mutually abutted and mated along the axial direction of the through hole, and semicircular holes for sealing the internal chain of the material conveying pipeline are respectively arranged on the mutual mating surfaces of the mating blocks at the front end of the pair of valve blocks, and after the mating blocks at the front end of the pair of valve blocks are mated with each other, the logistics channel between the transition connecting pipes on both sides of the valve body is separated at the valve block. , forming the closed state of the node valve assembly; a pair of flow channel adapter blocks are correspondingly arranged on the other side of the pair of valve covers, and an inner arc surface is arranged on the side of the flow channel adapter block away from the valve cover. When the valve cover is flipped 180 degrees and reversely installed to the through hole, the pair of flow channel adapter blocks are aligned with each other and at the position where the pair of flow channel adapter blocks are aligned with each other, the inner arc surfaces on the pair of flow channel adapter blocks form an equal-diameter logistics channel with the same inner diameter as the transition connecting pipe, thereby forming the open state of the node valve assembly; an ultrasonic cleaning device is also arranged on the valve cover, and the ultrasonic cleaning device includes an elastic buffer block, a vibrator mounting plate and an ultrasonic vibrator which are sequentially connected between the valve cover and the flow channel adapter block, and the cable of the ultrasonic vibrator is led out from the valve cover and then connected to an external ultrasonic generator.

2. A node valve assembly for cleaning control of a pipe chain conveyor pipeline according to claim 1, characterized in that: The transition connecting pipe is connected in series to the feed pipeline via a valve body mounting flange; cleaning interfaces for connecting to a circulating cleaning system are respectively provided on the transition connecting pipes on both sides of the valve body, and detachable plugs are provided on the cleaning interfaces.

3. A node valve assembly for cleaning control of a pipe chain conveyor pipeline according to claim 1, characterized in that: The elastic buffer block is a rubber elastic buffer block.

4. A node valve assembly for cleaning control of a pipe chain conveyor pipeline according to claim 2, characterized in that: The circulating cleaning system includes a cleaning tank, a circulating pump connected to the cleaning tank, a liquid inlet pipeline arranged at the outlet of the circulating pump, and a liquid return pipeline arranged on the cleaning tank. One of the cleaning interfaces on the valve body is connected to the circulating pump through the liquid inlet pipeline, and another cleaning interface on the valve body is connected to the cleaning tank through the liquid return pipeline.

5. A node valve assembly for cleaning control of a pipe chain conveyor pipeline according to claim 4, characterized in that: A filter screen is arranged in the cleaning pool, and the filter screen divides the cleaning pool into a dirt-blocking chamber and a liquid-supplying chamber. The circulating pump is connected to the liquid-supplying chamber of the cleaning pool, and the liquid return pipeline is connected to the dirt-blocking chamber of the cleaning pool.

6. A node valve assembly for cleaning control of a pipe chain conveyor pipeline according to claim 4, characterized in that: The circulating pump is a high-pressure circulating pump.

7. A node valve assembly for cleaning control of a pipe chain conveyor pipeline according to claim 1, characterized in that: The pair of valve blocks are embedded with sealing strips along the semicircular holes and the mutually mating surfaces.

8. A node valve assembly for cleaning control of a pipe chain conveyor pipeline according to claim 1, characterized in that: Scraping plates are arranged at intervals on the chain inside the material conveying pipeline of the tube chain machine, and a distance is set between the outer edge of the scraping plate and the inner wall of the material conveying pipeline.

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