CN215097556U - Novel air storage cylinder device and stone ballast hopper car - Google Patents

Novel air storage cylinder device and stone ballast hopper car Download PDF

Info

Publication number
CN215097556U
CN215097556U CN202120559689.7U CN202120559689U CN215097556U CN 215097556 U CN215097556 U CN 215097556U CN 202120559689 U CN202120559689 U CN 202120559689U CN 215097556 U CN215097556 U CN 215097556U
Authority
CN
China
Prior art keywords
air storage
cylinder
plate
storage cylinder
double
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202120559689.7U
Other languages
Chinese (zh)
Inventor
袁太红
李云霞
赵祖兴
李旭英
黄刚强
冯凯
魏文超
郭欢
张蓓
刘文胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CRRC Taiyuan Co Ltd
Original Assignee
CRRC Taiyuan Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CRRC Taiyuan Co Ltd filed Critical CRRC Taiyuan Co Ltd
Priority to CN202120559689.7U priority Critical patent/CN215097556U/en
Application granted granted Critical
Publication of CN215097556U publication Critical patent/CN215097556U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The utility model discloses a novel air storage cylinder device and a stone ballast hopper car, two installation seats are arranged on a waist belt of an end wall of an operation chamber of the stone ballast hopper car, two air storage cylinders are respectively arranged on the two installation seats, a double-hole flange interface is arranged on at least one air storage cylinder, a flexible steel bent pipe, one end of the flexible steel bent pipe is communicated with one interface of the double-hole flange interface on one air storage cylinder, the other end of the flexible steel bent pipe is communicated with the other air storage cylinder, a wind source pipe is communicated with the other interface of the double-hole flange interface, the air storage cylinder device divides the existing single air storage cylinder into two parts, two air storage cylinders with the same volume as the existing single air storage cylinder are used, the single air storage cylinder is small in volume, light in weight, flexible in transportation, convenient in assembly and disassembly, effectively saves the operation space in the operation chamber, greatly facilitates the assembly, maintenance and the application of other new technologies such as wind control, transmission devices and the like, and the leakage points of the connecting pipeline are reduced through the double-hole flange interface, and the reliability is further improved.

Description

Novel air storage cylinder device and stone ballast hopper car
Technical Field
The utility model belongs to the technical field of railway freight car, more specifically relates to a novel store up dryer device and stone tiny fragments of stone, coal, etc. hopper car.
Background
At present, the space in a control room of a railway ballast hopper car is narrow, so that the arrangement of a transmission device, a wind control device and the like in the control room is compact, wherein a wind storage barrel of the wind control device is obliquely arranged on two inclined struts in the center of an end wall in the control room, as shown in a figure 1-2, and wind control operation platforms, speed reducers and transmission shafts are respectively arranged on two sides of the wind storage barrel, so that the space in the original control room is narrower, and the following problems and disadvantages exist:
(1) the air storage cylinder is difficult to carry in and out through the end of the control room and the side door due to the fact that the air storage cylinder is large in size and weight, and is inconvenient to mount and dismount, and is installed on two inclined struts in the center of the end wall in the control room due to the fact that the air storage cylinder is inclined, the middle space position in the control room is occupied too much, so that a maintainer can difficultly enter the control room to overhaul transmission accessories such as a bidirectional air cylinder, and the overhaul time is long, and the temporary overhaul efficiency and the overhaul efficiency of a factory and a section are influenced in use.
(2) With the technical progress and the application of new technologies, customers gradually require that a bottom door opening display, a ballast discharge flow control device and other new technologies are additionally arranged on a transmission device at the upper part in a control room, the position of the air storage cylinder is increasingly obstructed, the observation sight is blocked, and the ballast discharge flow control device is not easy to operate.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the not enough that exists among the prior art, a novel store up dryer device and stone tiny fragments of stone, the dryer device should be stored up, the dryer is divided into two with current list storage dryer, use two with current list storage dryer volume the same two storage dryer, it is single small, light in weight, business turn over control room end, the side door is convenient, the transportation is nimble, the equipment, it is convenient to dismantle, effectively save control room inside control space, greatly made things convenient for the wind accuse, the equipment of transmission etc., overhaul the application of maintaining and other new technologies, and make its connecting line leakage point reduce through the diplopore flange interface, further improve the reliability.
In order to achieve the above object, the utility model provides a novel store up dryer device, include:
the two mounting seats are arranged on an end wall waistband of an operation room of the ballast hopper car;
the two air storage cylinders are respectively arranged on the two mounting seats, and the side cylinder walls of the air storage cylinders are provided with drainage plugs;
the double-hole flange interface is arranged on at least one air storage cylinder;
one end of the flexible steel bent pipe is communicated with one of the double-hole flange interfaces on one air storage barrel, and the other end of the flexible steel bent pipe is communicated with the other air storage barrel;
and the wind source pipe is communicated with the other interface of the double-hole flange interfaces.
Optionally, the mount includes:
the mounting base comprises a first plate and a second plate, the first plate and the second plate are connected to form an L-shaped plate, the first plate is connected with the waistband of the end wall, and one side of the second plate is flush with the surface of the waistband of the end wall;
the base rib plate is a U-shaped plate, and the open end of the base rib plate is welded with the second plate and the waistband of the end wall.
Optionally, the air storage barrel includes:
a cylinder body;
the air cylinder hanger is arranged on the cylinder wall of the cylinder body, the cross section of the air cylinder hanger is L-shaped, one end of the air cylinder hanger is welded on the cylinder wall of the air storage cylinder, and the other end of the air cylinder hanger is provided with a mounting hole.
Optionally, two connectors of the double-hole flange connector are provided with threaded connecting holes, and the double-hole flange connector can be connected with a pipeline through a flange and can also be connected with the pipeline through threads.
Optionally, the cylinder comprises:
a cylinder;
the outer periphery of the front cover is provided with a first annular flanging, and the first annular flanging is in splicing fit with one end of the cylinder and is welded with the one end of the cylinder;
and the periphery of the rear cover is provided with a second annular flanging, and the second annular flanging is in splicing fit with the other end of the cylinder and is welded with the other end of the cylinder.
Optionally, the reservoir crane comprises:
a groove is formed in one end of the fixing plate, and the shape of the groove is matched with that of the outer wall of the air storage barrel;
the connecting plate is vertically arranged at one end of the fixing plate;
the mounting hole is formed in the connecting plate, and the fixing plate and the connecting plate are integrally formed to form an L-shaped plate.
Optionally, the fixing plate is provided with a fabrication hole corresponding to the mounting hole.
Optionally, one be provided with the haplopore flange interface on the storage dryer, another the storage dryer is provided with the diplopore flange interface, the haplopore flange interface pass through flexible steel tubulose with a interface intercommunication of diplopore flange interface, another interface of diplopore flange interface with wind source pipe intercommunication, two the reducible pipeline of the three flange interface of storage dryer connects the quantity to reduce the pipeline and connect the leak source.
The utility model also provides a stone tiny fragments of stone, coal, etc. hopper car, include:
a stone ballast hopper car body;
the novel air storage barrel device.
The utility model provides a novel store up dryer device and stone tiny fragments of stone, coal, etc. hopper car, its beneficial effect lies in:
1. the air storage barrel device divides the existing single air storage barrel into two parts, and two air storage barrels with the same volume as the existing single air storage barrel are used;
2. the air storage barrel device adopts two air storage barrels, has small single volume and light weight, is convenient to pass in and out of the control chamber end and the side door, is flexible to transport, and is convenient to assemble and disassemble;
3. the air storage barrel device can effectively save the operation space in the control room, and greatly facilitates the assembly, the overhaul and the maintenance of a wind control device, a transmission device and the like and the application of other new technologies;
4. the air storage cylinder device has diversified installation modes, can be horizontally installed in a sitting mode and in a sitting mode, and can also be obliquely installed in a hanging mode on a belt of an end wall of a ballast hopper car;
5. the air storage cylinder device uses a double-hole flange interface, has two connection modes, can adopt flange connection and threaded connection according to different standards or special requirements of customers, and has flexible installation mode and wide application range;
6. the air storage cylinder device is of an anti-drop hanging type structure, the use and application safety is improved, the process holes are formed near the hanging mounting holes of each air cylinder, so that bolts and nuts can be conveniently fastened and mounted in a narrow space by using a spanner, and the air storage cylinder device is convenient and practical to mount;
7. the air storage cylinder device reduces leakage points of a connecting pipeline of the air storage cylinder device through the double-hole flange interface, and the reliability is further improved.
8. The air cylinder hanger of the air storage cylinder device is hung above the mounting base in a lap joint mode, and the air storage cylinder device has an anti-falling function if an air storage cylinder mounting bolt is loosened or lost.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout the exemplary embodiments of the present invention.
Fig. 1 shows a schematic structural diagram of a front view of a prior art air storage duct device.
Fig. 2 shows a schematic structural diagram of a prior art air storage duct device viewed from the left.
Fig. 3 shows a schematic structural diagram of a main view of a novel air storage barrel device according to an embodiment of the present invention.
Fig. 4 shows a left-side view structural diagram of a novel air storage barrel device according to an embodiment of the present invention.
Fig. 5 shows an enlarged view of a point a of fig. 4 of a novel air storage tube device according to an embodiment of the present invention.
Fig. 6 shows a schematic structural diagram of a mounting seat of a novel air storage cylinder device according to an embodiment of the present invention.
Fig. 7 shows a schematic usage of the mounting seat of the novel air storage cylinder device according to an embodiment of the present invention.
Fig. 8 shows a schematic structural diagram of a wind storage barrel of the novel wind storage barrel device according to an embodiment of the present invention.
Fig. 9 shows a schematic structural diagram of a wind storage barrel of the novel wind storage barrel device according to an embodiment of the present invention.
Fig. 10 shows a schematic structural diagram of a cylinder body of the novel air storage cylinder device according to an embodiment of the present invention.
Fig. 11 shows a schematic structural diagram of a fabrication hole of a novel air storage cylinder device according to an embodiment of the present invention.
Fig. 12 shows a schematic usage diagram of a process hole of a novel air storage cylinder device according to an embodiment of the present invention.
Fig. 13 shows a schematic structural diagram of a novel air storage cylinder device with few leak points according to an embodiment of the present invention.
Fig. 14 shows a schematic structural diagram of a plurality of leak points of a novel air storage tube device according to an embodiment of the present invention.
Description of reference numerals:
fig. 1 to 2 are attached drawings of a conventional original air storage duct device:
101. an air storage barrel; 102. and (4) bracing.
Fig. 3 to 13 are attached drawings of the novel air storage barrel device:
1.1, a cylinder body; 1.2, hanging an air cylinder; 2. a double-hole flange; 3. a flexible steel bend; 4.1, installing a base; 4.2, a base rib plate; 5. and (5) processing holes.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Fig. 3 shows a schematic structural diagram of a main view of a novel air storage barrel device according to an embodiment of the present invention; fig. 4 shows a schematic structural diagram of a left side view of a novel air storage barrel device according to an embodiment of the present invention; fig. 5 shows an enlarged view of a point a of fig. 4 of a novel air storage tube device according to an embodiment of the present invention.
As shown in fig. 3-5, a novel air storage barrel device comprises:
the two mounting seats are arranged on an end wall waistband of an operation room of the ballast hopper car;
the two air storage cylinders are respectively arranged on the two mounting seats, and the wall of each air storage cylinder is provided with a drainage plug;
the double-hole flange interface 2 is arranged on at least one air storage cylinder;
one end of the flexible steel bent pipe 3 is communicated with one of the double-hole flange interfaces 2 on one air storage barrel, and the other end of the flexible steel bent pipe is communicated with the other air storage barrel;
and the wind source pipe is communicated with the other interface of the double-hole flange interfaces 2.
Specifically, the volume of the air storage cylinder is half of the original volume of the air storage cylinder, the air storage cylinder is inserted into a hanger and fixed on an end wall through a mounting seat, the air storage cylinder is convenient to pass in and out of an operating room end and a side door, the air storage cylinder is flexible to transport, convenient to assemble and disassemble, convenient to drive, and convenient to assemble and overhaul an air control device, and the application of new technologies such as a bottom door opening display and a ballast discharge flow control device is facilitated, meanwhile, the flexible steel bent pipe 3 is a multi-section bent pipeline and has the characteristic of good flexibility, internal stress is easy to release during pipeline connection, strong assembly can be avoided, the leakage probability of a pipeline interface is reduced, multiple connection modes are provided through the double-hole flange interface 2, different standards or special requirements of customers are met, leakage points are reduced, water and impurities accumulated in the air storage cylinder are manually and periodically removed in the use process of the air storage cylinder through drainage and blockage, the air storage cylinder does not need to be disassembled, and the operation can be carried out only through unscrewing the drainage blockage on the air storage cylinder, the operation and maintenance are simple and reasonable.
Furthermore, the air storage cylinder is at least provided with three drainage plugs corresponding to the positions of horizontal sitting installation, horizontal hanging installation and inclined hanging installation of the air storage cylinder.
Fig. 6 shows a schematic structural diagram of a mounting seat of a novel air storage cylinder device according to an embodiment of the present invention; fig. 7 shows a schematic usage of the mounting seat of the novel air storage cylinder device according to an embodiment of the present invention.
As shown in fig. 6 to 7, in the present embodiment, the mount includes:
the mounting base 4.1 comprises a first plate and a second plate, the first plate and the second plate are connected to form an L-shaped plate, the first plate is connected with the waistband of the end wall, and one side of the second plate is flush with the surface of the waistband of the end wall;
the base rib plate 4.2 is a U-shaped plate, and the opening end of the base rib plate 4.2 is welded with the second plate and the waistband of the end wall.
Fig. 8 shows a schematic structural diagram of an air storage barrel of the novel air storage barrel device according to an embodiment of the present invention; fig. 9 shows a schematic structural diagram of a wind storage barrel of the novel wind storage barrel device according to an embodiment of the present invention.
As shown in fig. 8 to 9, in the present embodiment, the air storage duct includes:
1.1 of the cylinder body;
the air cylinder hanger 1.2 is arranged on the cylinder wall of the cylinder body 1.1, the cross section of the air cylinder hanger 1.2 is L-shaped, one end of the air cylinder hanger 1.2 is welded on the cylinder wall of the air storage cylinder, and the other end of the air cylinder hanger 1.2 is provided with a mounting hole.
Specifically, the cylinder body 1.1 stores gas, and the cylinder body 1.1 is fixed with the waistband through an air cylinder hanger 1.2.
In this embodiment, two connectors of the double-hole flange connector 2 are both provided with threaded connection holes, and both can be connected with a pipeline by a flange and can also be connected with the pipeline by threads.
Specifically, can adopt flange joint or adopt threaded connection according to using different standards or customer special requirement through diplopore flange interface 2, increase the practicality, reduce the gas leakage point simultaneously, promote the leakproofness.
Fig. 10 shows a schematic structural diagram of a cylinder body of the novel air storage cylinder device according to an embodiment of the present invention.
As shown in fig. 10, in the present embodiment, the cylinder 1.1 includes:
a cylinder;
the outer periphery of the front cover is provided with a first annular flanging, and the first annular flanging is in splicing fit with one end of the cylinder and is welded with one end of the cylinder;
and the periphery of the rear cover is provided with a second annular flanging, and the second annular flanging is spliced and matched with the other end of the cylinder and welded with the other end of the cylinder.
Specifically, the front cover, the rear cover and the barrel are in inserted step lap joint, so that the assembly and the welding are convenient, the manufacturability is good, the strength of a seam is improved, and the leakage probability of the seam is reduced.
Fig. 11 is a schematic structural diagram illustrating a fabrication hole of a novel air storage cylinder device according to an embodiment of the present invention; fig. 12 shows a schematic usage diagram of a process hole of a novel air storage cylinder device according to an embodiment of the present invention.
As shown in fig. 11 to 12, in the present embodiment, the reservoir lifter includes:
one end of the fixing plate is provided with a groove, and the shape of the groove is matched with the shape of the outer wall of the air storage cylinder;
the connecting plate is vertically arranged at one end of the fixing plate;
and the mounting hole is formed in the connecting plate, and the fixing plate and the connecting plate are integrally formed to form an L-shaped plate.
In this embodiment, the fixing plate is provided with a fabrication hole 5 corresponding to the mounting hole.
Specifically, a fabrication hole 5 is reserved on a connecting plate at the mounting hole, when the mounting space is tense and a fastening wrench is used for fastening the limitation, the wrench is inserted from the fabrication hole 5 and fixed with a nut, and a bolt at the other end is fastened, so that the assembly and the use in a narrow space are facilitated.
Fig. 13 is a schematic structural diagram of a novel air storage duct device with less leak points according to an embodiment of the present invention; fig. 14 shows a schematic structural diagram of a plurality of leak points of a novel air storage tube device according to an embodiment of the present invention.
As shown in fig. 13-14, in this embodiment, a single-hole flange interface is disposed on one air storage cylinder, a double-hole flange interface 2 is disposed on the other air storage cylinder, the single-hole flange interface is communicated with one interface of the double-hole flange interface 2 through a flexible steel pipe, the other interface of the double-hole flange interface 2 is communicated with an air source pipe, and the number of pipe joints can be reduced by three flange interfaces of the two air storage cylinders, so that the leakage point of the pipe joint can be reduced.
Specifically, the leakage probability of the pipeline interface is reduced through the double-hole flange interface 2.
The utility model also provides a stone tiny fragments of stone, coal, etc. hopper car, include:
a stone ballast hopper car body;
the novel air storage barrel device.
When the air storage barrel device is used, by taking replacement installation as an example, the existing 200-liter original air storage barrel is replaced by two air storage barrels, the two air storage barrels are symmetrically arranged and installed on a waist belt of an end wall in a control room, the two air storage barrels are connected by a flexible steel bent pipe 3 with a flange, the air storage barrels are installed in a hanging manner, namely, air cylinder hangers 1.2 of the air storage barrels are hung on the plane of an air storage barrel installation seat, and play a role in supporting and hanging when an installation nut is loosened or a bolt is lost, so that the anti-falling performance is good, the structure is safe and reliable, meanwhile, air cylinder hangers 1.2 of the air storage barrels and bolt holes of the air storage barrel installation seat installed on the waist belt of the end wall are all made into long round holes which are vertically arranged, the air storage barrels and connecting pipelines thereof can be properly adjusted, reasonable manufacturing and assembling errors of accessories in a tolerance range can be effectively eliminated, and the volume and self weight of a single air storage barrel are obviously reduced, the operation room end door or the side door is convenient to carry, and the assembly or the disassembly is convenient and quick.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims (9)

1. The utility model provides a novel store up dryer device which characterized in that includes:
the two mounting seats are arranged on an end wall waistband of an operation room of the ballast hopper car;
the two air storage cylinders are respectively arranged on the two mounting seats, and the wall of each air storage cylinder is provided with a drainage plug;
the double-hole flange interface is arranged on at least one air storage cylinder;
one end of the flexible steel bent pipe is communicated with one of the double-hole flange interfaces on one air storage barrel, and the other end of the flexible steel bent pipe is communicated with the other air storage barrel;
and the wind source pipe is communicated with the other interface of the double-hole flange interfaces.
2. The novel air storage barrel device according to claim 1, wherein the mounting seat comprises:
the mounting base comprises a first plate and a second plate, the first plate and the second plate are connected to form an L-shaped plate, the first plate is connected with the waistband of the end wall, and one side of the second plate is flush with the surface of the waistband of the end wall;
the base rib plate is a U-shaped plate, and the open end of the base rib plate is welded with the second plate and the waistband of the end wall.
3. The novel air storage barrel device according to claim 1, wherein the air storage barrel comprises:
a cylinder body;
the air cylinder hanger is arranged on the cylinder wall of the cylinder body, the cross section of the air cylinder hanger is L-shaped, one end of the air cylinder hanger is welded on the cylinder wall of the air storage cylinder, and the other end of the air cylinder hanger is provided with a mounting hole.
4. The novel air storage cylinder device as claimed in claim 1, wherein both of the two ports of the double-hole flange port are provided with threaded connection holes, and the two ports can be connected with a pipeline by using a flange or a thread.
5. The novel air storage cylinder device as claimed in claim 3, wherein the cylinder body comprises:
a cylinder;
the outer periphery of the front cover is provided with a first annular flanging, and the first annular flanging is in splicing fit with one end of the cylinder and is welded with the one end of the cylinder;
and the periphery of the rear cover is provided with a second annular flanging, and the second annular flanging is in splicing fit with the other end of the cylinder and is welded with the other end of the cylinder.
6. The novel air storage cylinder device as claimed in claim 3, wherein the air cylinder hanger comprises:
a groove is formed in one end of the fixing plate, and the shape of the groove is matched with that of the outer wall of the air storage barrel;
the connecting plate is vertically arranged at one end of the fixing plate;
the mounting hole is formed in the connecting plate, and the fixing plate and the connecting plate are integrally formed to form an L-shaped plate.
7. The novel air storage barrel device according to claim 6, wherein the fixing plate is provided with a fabrication hole corresponding to the mounting hole.
8. The novel air storage cylinder device according to claim 1, wherein one air storage cylinder is provided with a single-hole flange interface, the other air storage cylinder is provided with a double-hole flange interface, the single-hole flange interface is communicated with one interface of the double-hole flange interface through the flexible steel pipe, the other interface of the double-hole flange interface is communicated with the air source pipe, and the number of pipeline joints can be reduced by three flange interfaces of the two air storage cylinders, so that the leakage point of a pipeline joint is reduced.
9. A stone tiny fragments of stone, coal, etc. hopper car which characterized in that includes:
a stone ballast hopper car body;
a novel air reservoir cartridge device according to any one of claims 1 to 8.
CN202120559689.7U 2021-03-18 2021-03-18 Novel air storage cylinder device and stone ballast hopper car Active CN215097556U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120559689.7U CN215097556U (en) 2021-03-18 2021-03-18 Novel air storage cylinder device and stone ballast hopper car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120559689.7U CN215097556U (en) 2021-03-18 2021-03-18 Novel air storage cylinder device and stone ballast hopper car

Publications (1)

Publication Number Publication Date
CN215097556U true CN215097556U (en) 2021-12-10

Family

ID=79343926

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120559689.7U Active CN215097556U (en) 2021-03-18 2021-03-18 Novel air storage cylinder device and stone ballast hopper car

Country Status (1)

Country Link
CN (1) CN215097556U (en)

Similar Documents

Publication Publication Date Title
CN215097556U (en) Novel air storage cylinder device and stone ballast hopper car
CN112896201B (en) Novel air storage cylinder device and stone ballast hopper car
CN208330844U (en) A kind of fan inlet connection maintenance unit
CN206859264U (en) A kind of multi-channel energy-saving safety manhole joint design
CN109826287A (en) A kind of construction sewer pipe connection structure
CN209967969U (en) Liquid tank type filtering device
CN210484492U (en) Suspension cylinder, damping system and vehicle
CN2846849Y (en) Open conical sleeve
CN210509537U (en) Air compressor machine exhaust improves system
CN214947214U (en) Mechanical tee joint
CN211118153U (en) Anti-static metal hose
CN213541833U (en) Can dismantle engineering vehicle counting system's control box support
CN218935398U (en) Exhaust device for tailing conveying pipeline
CN217502943U (en) Stop valve convenient to installation
CN212757723U (en) Exhaust plate vacuum pumping filter device
CN210829699U (en) Connecting and fixing locking device for pneumatic diaphragm pump
CN217876378U (en) Air conditioner heat supply ventilation pipeline embedded in wall
CN216276875U (en) Reinforced environment-friendly building template
CN216555756U (en) Metal collapsible tube convenient and fast to disassemble
CN210531757U (en) Fire-fighting pipeline connection seat convenient to install
CN211853172U (en) Petroleum storage and transportation pipeline discharging device
CN201554963U (en) Gas pipeline for delivering compressed air
CN216279925U (en) Pipeline flange convenient to erection joint
CN216046892U (en) Gas bus-bar with alarm structure
CN219640021U (en) Coal pile nitrogen charging device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant