Quick disassembly and assembly type fine counterweight device for hard alloy powder material discharging system

Abstract

The utility model discloses a quick disassembly and assembly type fine counterweight device for a hard alloy powder material discharging system. The quick disassembly and assembly type fine counterweight device mainly comprises a first-stage valve core pipeline and a second-stage valve core pipeline, the first-stage valve core mainly comprises a first-stage main body valve core, a clamping pipeline, a first-stage buckle, a limiting pin, a pipeline clamping ring, a pipeline clamping ring boss, a clamping pipeline connecting hole, a first-stage buckle connecting hole and a main body valve core boss; the second-stage valve element pipeline mainly comprises a second-stage bin, a protective cover, a sealing ring, a second-stage buckle, an arc-shaped valve element, a connecting body, an air cylinder, an air cylinder protective cover and a conveying pipeline. The hard alloy powder conveying device has the advantages that the valve element is accurately adjusted, hard alloy powder materials with the required proportion are output, the material conveying flow is constant, discharging is accurate, movement is stable, vibration is small, the service life is long, the automation degree is high, operation is easy, assembling is easy, and the maintenance cost is low.

Description

Technical Field

[0001] The utility model relates to the field of powder metallurgy, in particular to a quick-detachable fine weight counterweight device for a hard alloy powder material discharging system. Background Art

[0002] With the development and progress of science and technology in my country, the equipment we use is becoming more and more automated. The powder metallurgy industry has the pain points of low production efficiency, high production cost, great harm to the human body, and serious environmental pollution due to the special cemented carbide powder ratio. Powdered carbide material is a high-hardness material. It will wear the surface of parts during the transfer process, causing the storage device to fail and affecting production efficiency. Therefore, a quick-disassembly and assembly fine counterweight device for cemented carbide powder material discharging system was produced. The valve core uses the characteristics of special cemented carbide powder and combines it with autonomous shutdown to simply and conveniently complete the material ratio work, liberate productivity, and improve industry production efficiency to meet the needs of the powder metallurgy industry. It not only saves costs and improves production efficiency, but also brings higher production benefits.

[0003] At present, there are also some discharge valve core devices for cemented carbide powder material machines. However, the material drop fineness of some devices is not enough, and the valve core surface wears quickly. When encountering some cemented carbide material powder, the surface hardness of the valve core material is insufficient, causing rapid wear. In addition, due to the small load-bearing structure, once it is loose, its stability will be reduced, and its service life will also be reduced. The transmission structure of many discharge valve core devices is completely exposed to the outside, and it is easy to fall into small particles such as dust, causing wear. In severe cases, it may cause the device to get stuck, reducing its service life. If the working environment is harsh, it will be more serious, greatly reducing work efficiency. At present, there are two main methods for discharging powder cemented carbide materials in China: one is to flip the batching barrel through the mechanism, and then pour the material into the designated container to achieve automatic batching; the other is to open the bottom butterfly valve of the batching channel manually or through an auxiliary mechanism, and use its own gravity to export the material. The common disadvantages of the two methods are: ① The residual cemented carbide powder will wear the container or valve surface, eventually causing the failure of the components and affecting the batching operation; ② Due to its high density, the bottom material cannot be discharged after being compacted.

[0004] In view of the above problems, there is an urgent need for a discharge valve core device of a new type of cemented carbide powder material machine which can adjust the amount of cemented carbide powder material falling, has a long service life, is dustproof, is easy to assemble and is adjustable. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a quick-detachable fine counterweight device for a cemented carbide powder material discharging system, characterized in that: it includes a primary valve core pipeline and a secondary valve core pipeline; the primary valve core pipeline includes a primary main body valve core, a clamping pipeline, a primary buckle, a limit pin, a pipeline clamp ring, a pipeline clamp ring boss, a clamping pipeline connection hole, a primary buckle connection hole, a main body valve core boss, a main body valve core connection hole, a high-pressure air pipe connection joint, a tapered end boss, and a tapered end connection hole; a pipeline clamp ring is designed at the upper end of the clamping pipeline; four rotationally symmetrical pipeline clamp ring bosses are designed at the other end of the clamping pipeline; the pipeline clamp The annular boss is provided with a clamping pipe connecting hole; the first-level buckle is provided with a first-level buckle connecting hole; the outer surface of the first-level main valve core is provided with four rotationally symmetrical high-pressure gas pipe connecting joints; the upper end of the first-level main valve core is designed with four rotationally symmetrical main valve core bosses; the main valve core boss is provided with a main valve core connecting hole; the lower end of the first-level main valve core is designed with four rotationally symmetrical tapered end bosses; the tapered end boss is provided with a tapered end connecting hole; the pipe clamp ring boss of the clamping pipe and the main valve core boss of the first-level main valve core are clamped together through the first-level buckle; the limit pin is aligned and plugged with the clamping pipe connecting hole, the main valve core connecting hole and the first-level buckle connecting hole.

[0006] Furthermore, the secondary valve core pipeline includes a secondary warehouse, a protective cover, a sealing ring, a secondary buckle, an arc-shaped valve core, a connector, a cylinder, a cylinder protective cover, a transport pipeline, a secondary warehouse upper end connection, a secondary warehouse upper end connecting hole, a card slot, a secondary warehouse lower end connection, a secondary warehouse lower end connecting hole, a protective cover docking platform, a protective cover docking platform, a limit pin slot, a protective cover docking hole, a secondary buckle hole, an arc-shaped valve core protective cover, a connector upper end connection, a connector upper end connecting hole, a connector lower end connection, a connector lower end connecting hole, a connector protective cover, a cylinder protective cover upper end connection, a cylinder protective cover upper end connecting hole, a transport pipeline upper end connection, a transport pipeline upper end connecting hole, and a transport pipeline high-pressure air pipe connecting joint.

[0007] Furthermore, the upper end of the secondary warehouse is designed with 4 rotationally symmetrical secondary warehouse upper end connections; the secondary warehouse upper end connections are all provided with secondary warehouse upper end connection holes; the lower end of the secondary warehouse is designed with 4 rotationally symmetrical secondary warehouse lower end connections; the secondary warehouse lower end connections are all designed with secondary warehouse lower end connection holes; the end of the secondary warehouse close to the secondary warehouse lower end connection is designed with a card slot; one end of the side of the protective cover is designed with a protective cover docking platform; the other end face of the side of the protective cover away from the protective cover docking platform is designed with a protective cover docking hole; the inner side of the protective cover is designed with a protective cover docking platform; the outer side of the protective cover is designed with a limiting pin groove; the secondary buckles are all designed with secondary buckle holes; the bottom of the arc valve core is designed with an arc valve core protective cover; the connecting The upper end of the connector is designed with 4 rotationally symmetrical connector upper end connections; the connector upper end connections are all designed with connector upper end connection holes; the lower end of the connector is designed with 4 rotationally symmetrical connector lower end connections; the connector lower end connections are all designed with connector lower end connection holes; the connector is designed with a connector protection cover at one end close to the connector lower end connection; the upper end of the cylinder protection cover is designed with 4 rotationally symmetrical cylinder protection cover upper end connections; the cylinder protection cover upper end connections are all designed with cylinder protection cover upper end connection holes; the upper end of the transport pipeline is designed with 4 rotationally symmetrical transport pipeline upper end connections; the transport pipeline upper end connections are all designed with transport pipeline upper end connection holes; a transport pipeline high-pressure air pipe connection joint is designed on the outer surface of the transport pipeline.

[0008] Furthermore, the cylinder is sleeved with the cylinder protection cover; the upper end of the cylinder protection cover at the upper end of the cylinder protection cover is connected to the lower end of the connector at the lower end of the connector through a secondary snap-on snap-on connection, wherein the upper end connecting hole of the cylinder protection cover, the lower end connecting hole of the connector, and the secondary snap-on hole are aligned and then the limit pin is inserted; the arc valve core protection cover of the arc valve core is sleeved with the connector protection cover of the connector, wherein the arc valve core is threadedly connected to the telescopic rod of the cylinder when sleeved; the sealing ring is placed in the upper end connection of the connector at the upper end of the connector; the upper end of the connector at the upper end of the connector is connected to the second end of the lower end of the secondary warehouse. The lower end of the secondary bin is connected through a secondary buckle; the protective cover is connected to the slot at the lower end of the secondary bin through a protective cover clamping platform, wherein the protective cover docking platforms and protective cover docking holes of the two protective covers are plugged into each other, and the limit pin is plugged after the upper connecting hole of the connector, the lower end connecting hole of the secondary bin, the secondary buckle hole, and the limit pin groove are aligned; the upper end of the secondary bin at the upper end of the secondary bin is connected to the tapered end boss at the lower end of the first main body valve core through the upper end of the transport pipeline of the transport pipeline, wherein the limit pin is plugged after the upper end connecting hole of the secondary bin, the upper end connecting hole of the transport pipeline, and the tapered end connecting hole are aligned.

[0009] Compared with the existing technology, the quick-disassembly and assembly fine counterweight device of the cemented carbide powder material discharging system has the following beneficial effects: the device can achieve two different working states, which can be adapted to large-flow rapid material discharge and small-flow fine material discharge; the device is easy to disassemble and assemble, and does not require the use of other auxiliary tools, which is convenient for subsequent updates and maintenance; the device occupies a small space, has low working noise, and works stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the overall assembly structure of a discharge valve core of a quick-disassembly and assembly type precision weight-balancing device for a cemented carbide powder material discharge system of the utility model;

[0011] Figure 2 This is a schematic diagram of the parts structure of a quick-detachable fine weight device for a cemented carbide powder material discharging system of the utility model;

[0012] Figure 3 This is a schematic diagram of the structure of a first-stage valve core pipeline of a quick-detachable fine weight device for a cemented carbide powder material discharging system of the utility model;

[0013] Figure 4 This is a schematic diagram of the secondary valve core pipeline structure of a quick-detachable fine weight device for a cemented carbide powder material discharging system of the utility model;

[0014] In the figure: 1-first-level valve core pipeline, 2-second-level valve core pipeline, 101-first-level main body valve core, 102-clamping pipeline, 103-first-level buckle, 104-limiting pin, 105-pipe clamp ring, 106-pipe clamp ring boss, 107-clamping pipeline connecting hole, 108-first-level buckle connecting hole, 109-main body valve core boss, 110-main body valve core connecting hole, 111-high-pressure gas pipe connecting joint, 112-tapered end boss, 113-tapered end connecting hole, 201-secondary warehouse, 202-protective cover, 203-sealing ring, 204-secondary buckle, 205-arc valve core, 206-connector, 207-cylinder, 208-cylinder protective cover, 209-transport pipeline, 210-secondary warehouse upper end Connection, 211-secondary warehouse upper end connecting hole, 212-card slot, 213-secondary warehouse lower end connection, 214-secondary warehouse lower end connecting hole, 215-protective cover docking platform, 216-protective cover docking platform, 217-limit pin slot, 218-protective cover docking hole, 219-secondary buckle hole, 220-arc valve core protective cover, 221-connecting body upper end, 22-connecting body upper end hole, 223-connecting body lower end, 224-connecting body lower end hole, 225-connecting body protective cover, 226-cylinder protective cover upper end connection, 227-cylinder protective cover upper end connecting hole, 228-transport pipeline upper end connection, 229-transport pipeline upper end connecting hole, 230-transport pipeline high-pressure gas pipe connecting joint. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0016] The utility model provides a technical solution: a quick-disassembly and assembly type fine counterweight device for a cemented carbide powder material discharging system, comprising a first-level valve core pipeline 1 and a second-level valve core pipeline 2; the first-level valve core pipeline 1 comprises a first-level main body valve core 101, a clamping pipeline 102, a first-level buckle 103, a limit pin 104, a pipeline clamp ring 105, a pipeline clamp ring boss 106, a clamping pipeline connection hole 107, a first-level buckle connection hole 108, a main body valve core boss 109, a main body valve core connection hole 110, a high-pressure gas pipe connection hole 111, and a second-level buckle connection hole 112. The pipe 102 has a pipe clamp ring 105 at the upper end, which is convenient for subsequent installation and disassembly; the other end of the pipe 102 is designed with four rotationally symmetrical pipe clamp ring bosses 106, which reduces the installation of bolts and reduces the time for installation and subsequent maintenance and disassembly; the pipe clamp ring boss 106 is provided with a pipe clamp connection hole 107; the first-level buckle 103 is provided with a second-level buckle connection hole 108, which is consistent with the limit pin. 104 can achieve the positioning effect; the outer surface of the primary main body valve core 101 is provided with 4 rotationally symmetrical high-pressure gas pipe connecting joints 111, this structure is convenient for installing the high-pressure gas pump joint to clean the inner wall of the valve core pipeline, and the high-pressure gas can prevent the material from agglomerating; the upper end of the primary main body valve core 101 is designed with 4 rotationally symmetrical main body valve core bosses 109; the main body valve core bosses 109 are provided with main body valve core connecting holes 110; the lower end of the primary main body valve core 101 is designed with 4 rotationally symmetrical tapered end bosses 112, this The structure avoids the use of multiple threads, reducing the time for installation and subsequent maintenance and disassembly; the tapered end boss 112 is provided with a tapered end connecting hole 113; the pipe clamp ring boss 106 of the clamped pipe 102 is clamped with the main valve core boss 109 of the first-level main valve core 101 through the first-level buckle 103, and this buckle structure is convenient for tool-free installation; the limit pin 104 is aligned and plugged with the clamped pipe connecting hole 107, the main valve core connecting hole 110 and the first-level buckle connecting hole 108, and this structure is convenient for installation and subsequent maintenance and disassembly.

[0017] The secondary valve core pipeline 2 includes a secondary chamber 201, a protective cover 202, a sealing ring 203, a secondary buckle 204, an arc valve core 205, a connector 206, a cylinder 207, a cylinder protective cover 208, a transport pipeline 209, a secondary chamber upper end connection 210, a secondary chamber upper end connection hole 211, a card slot 212, a secondary chamber lower end connection 213, a secondary chamber lower end connection hole 214, a protective cover card docking platform 215, a protective cover card docking platform 216, and a limit pin slot 21 7. Protection cover docking hole 218, secondary snap hole 219, arc valve core protection cover 220, connector upper end connection 221, connector upper end connection hole 222, connector lower end connection 223, connector lower end connection hole 224, connector protection cover 225, cylinder protection cover upper end connection 226, cylinder protection cover upper end connection hole 227, transport pipeline upper end connection 228, transport pipeline upper end connection hole 229, transport pipeline high-pressure gas pipe connection joint 230.

[0018] The upper end of the secondary warehouse 201 is designed with 4 rotationally symmetrical secondary warehouse upper end connections 210, which reduces the installation of bolts and reduces the time for installation and subsequent maintenance and disassembly; the secondary warehouse upper end connections 210 are all provided with secondary warehouse upper end connection holes 211, which cooperate with the limit pin 104 to achieve a positioning effect; the lower end of the secondary warehouse 201 is designed with 4 rotationally symmetrical secondary warehouse lower end connections 213, which reduces the installation of bolts and reduces the time for installation and subsequent maintenance and disassembly; the secondary warehouse lower end connections 213 are all designed with secondary warehouse lower end connection holes 214, which cooperate with the limit pin 104 can achieve the positioning effect; the second-level bin 201 is designed with a slot 212 at one end close to the second-level bin lower end connection 213, which is convenient for subsequent installation and positioning; a protective cover docking platform 215 is designed at one end of the side of the protective cover 202; the other end face of the side of the protective cover 202 away from the protective cover docking platform 215 is designed with a protective cover docking hole 218; the inner side of the protective cover 202 is designed with a protective cover docking platform 216; the outer side of the protective cover 202 is designed with a limited pin groove 217, which is convenient for subsequent installation; the second-level buckles 204 are all designed with second-level buckle holes 219; arc-shaped The bottom of the valve core 205 is designed with an arc-shaped valve core protection cover 220 to protect the cylinder telescopic rod from being worn by hard alloy powder; the upper end of the connector 206 is designed with four rotationally symmetrical connector upper end connections 221; the connector upper end connections 221 are all designed with connector upper end connection holes 222; the lower end of the connector 206 is designed with four rotationally symmetrical connector lower end connections 223; the connector lower end connections 223 are all designed with connector lower end connection holes 224; the connector 206 is designed with a connector protection cover 225 at one end close to the connector lower end connection 223 to protect the cylinder telescopic rod from being worn by hard alloy powder. Powder wear; the upper end of the cylinder protection cover 208 is designed with 4 rotationally symmetrical cylinder protection cover upper end connections 226; the cylinder protection cover upper end connections 226 are all designed with cylinder protection cover upper end connection holes 227; the upper end of the transport pipeline 209 is designed with 4 rotationally symmetrical transport pipeline upper end connections 228; the transport pipeline upper end connections 228 are all designed with transport pipeline upper end connection holes 229; the outer surface of the transport pipeline 209 is designed with a transport pipeline high-pressure air pipe connection joint 230, this structure is convenient for installing the high-pressure air pump joint to clean the internal wall of the valve core pipeline, and the high-pressure gas can prevent material agglomeration.

[0019] During assembly, the cylinder 207 is sleeved with the cylinder protection cover 208; the cylinder protection cover upper end connection 226 at the upper end of the cylinder protection cover 208 is clamped with the connector lower end connection 223 at the lower end of the connector 206 through the secondary buckle 204, wherein the cylinder protection cover upper end connection hole 227, the connector lower end connection hole 224, and the secondary buckle hole 219 are aligned and the limit pin 104 is inserted; the arc valve core protection cover 220 of the arc valve core 205 is sleeved with the connector protection cover 225 of the connector 206, wherein the arc valve core 205 is threadedly connected with the telescopic rod of the cylinder 207 when sleeved; the sealing ring 203 is placed in the connector upper end connection 221 at the upper end of the connector 206; the connector upper end connection 221 at the upper end of the connector 206 is connected to the secondary warehouse lower end connection at the lower end of the secondary warehouse 201 The connection 213 is clamped by the secondary buckle 204; the protective cover 202 is clamped with the slot 212 at the lower end of the secondary warehouse 201 through the protective cover clamping platform 216, wherein the protective cover docking platforms 215 and the protective cover docking holes 218 of the two protective covers 202 are plugged into each other, and the limit pin 104 is plugged after the upper connecting hole 222 of the connector, the lower connecting hole 214 of the secondary warehouse, the secondary buckle hole 219, and the limit pin groove 217 are aligned; the secondary warehouse upper end connection 210 at the upper end of the secondary warehouse 201 is clamped with the tapered end boss 112 at the lower end of the first main body valve core 101 through the transport pipe upper end connection 228 of the transport pipe 209, wherein the limit pin 104 is plugged after the upper connecting hole 211 of the secondary warehouse, the upper connecting hole 229 of the transport pipe, and the tapered end connecting hole 113 are aligned.

[0020] When in use, first fix the overall valve core device at the discharge valve of the discharge machine. When a large amount of metal powder is required to fall, open the first-level valve core pipeline 1, and lift the arc valve core 205 of the second-level valve core pipeline 2 to close the lower end resistance of the second-level bin 201. After the second-level bin 201 is filled with materials, the surplus materials will flow out from the side of the second-level bin 201 to achieve large flow rate of material falling. When a small flow of metal powder, that is, a small amount of fixed mass, is required to flow out, close the first-level valve core pipeline 1, and control the arc valve core 205 to withdraw one end downward to make a small amount of material flow downward, then immediately lift the arc valve core 205 to close the second-level bin, and repeat the operation to achieve the required mass in the form of compensation.

Claims

1. A quick-detachable fine counterweight device for a cemented carbide powder material discharging system, characterized in that: The invention comprises a primary valve core pipeline (1) and a secondary valve core pipeline (2); the primary valve core pipeline (1) comprises a primary main body valve core (101), a clamping pipeline (102), a primary buckle (103), a limit pin (104), a pipeline clamp ring (105), a pipeline clamp ring boss (106), a clamping pipeline connection hole (107), a primary buckle connection hole (108), a main body valve core boss (109), a main body valve core connection hole (110), a high-pressure gas pipe connection joint (111), a tapered end boss (112), and a tapered end connection hole (113); a pipeline clamp ring (105) is arranged at the upper end of the clamping pipeline (102); four rotationally symmetrical pipeline clamp ring bosses (106) are arranged at the other end of the clamping pipeline (102); a clamping pipeline connection hole (107) is provided on the pipeline clamp ring boss (106); a primary buckle (103) is provided on the primary buckle The first-stage main body valve core (101) is provided with a first-stage buckle connection hole (108); the outer surface of the first-stage main body valve core (101) is provided with four rotationally symmetrical high-pressure gas pipe connection joints (111); the upper end of the first-stage main body valve core (101) is provided with four rotationally symmetrical main body valve core bosses (109); the main body valve core bosses (109) are provided with a main body valve core connection hole (110); the lower end of the first-stage main body valve core (101) is provided with four rotationally symmetrical tapered end bosses (112); the tapered end boss (112) is provided with a tapered end connection hole (113); the pipe clamp ring boss (106) of the clamped pipe (102) and the main valve core boss (109) of the first-level main valve core (101) are clamped together through a first-level buckle (103); the limit pin (104) and the clamped pipe connection hole (107), the main valve core connection hole (110) and the first-level buckle connection hole (108) are aligned and plugged.

2. The quick-detachable fine weight device for cemented carbide powder material discharging system according to claim 1, characterized in that: The secondary valve core pipeline (2) comprises a secondary chamber (201), a protective cover (202), a sealing ring (203), a secondary buckle (204), an arc-shaped valve core (205), a connecting body (206), a cylinder (207), a cylinder protective cover (208), a transport pipeline (209), a secondary chamber upper end connection (210), a secondary chamber upper end connection hole (211), a clamping groove (212), a secondary chamber lower end connection (213), a secondary chamber lower end connection hole (214), a protective cover clamping platform (215), a protective cover clamping platform (216), and a limit pin. A nail groove (217), a protective cover docking hole (218), a secondary buckle hole (219), an arc-shaped valve core protective cover (220), a connector upper end connection (221), a connector upper end connection hole (222), a connector lower end connection (223), a connector lower end connection hole (224), a connector protective cover (225), a cylinder protective cover upper end connection (226), a cylinder protective cover upper end connection hole (227), a transport pipeline upper end connection (228), a transport pipeline upper end connection hole (229), and a transport pipeline high-pressure gas pipe connection joint (230).

3. The quick-detachable fine weight device for cemented carbide powder material discharging system according to claim 2, characterized in that: The upper end of the secondary warehouse (201) is designed with four rotationally symmetrical secondary warehouse upper end connections (210); the secondary warehouse upper end connections (210) are each provided with a secondary warehouse upper end connection hole (211); the lower end of the secondary warehouse (201) is designed with four rotationally symmetrical secondary warehouse lower end connections (213); the secondary warehouse lower end connections (213) are each provided with a secondary warehouse lower end connection hole (214); the secondary warehouse (201) is provided with a slot (212) at one end close to the secondary warehouse lower end connection (213); the protective cover ( A protective cover docking platform (215) is designed at one end of the side of the protective cover (202); a protective cover docking hole (218) is designed at the other end face of the side of the protective cover (202) away from the protective cover docking platform (215); a protective cover docking platform (216) is designed at the inner side of the protective cover (202); a limit pin groove (217) is designed at the outer side of the protective cover (202); the secondary buckles (204) are all designed with secondary buckle holes (219); the bottom of the arc valve core (205) is designed with an arc valve core protective cover (220 ); the upper end of the connector (206) is designed with four rotationally symmetrical connector upper end connections (221); the connector upper end connections (221) are all designed with connector upper end connection holes (222); the lower end of the connector (206) is designed with four rotationally symmetrical connector lower end connections (223); the connector lower end connections (223) are all designed with connector lower end connection holes (224); the connector (206) is designed with a connector protection cover (225) at one end close to the connector lower end connection (223); The upper end of the cylinder protection cover (208) is designed with four rotationally symmetrical cylinder protection cover upper end connections (226); the cylinder protection cover upper end connections (226) are all designed with cylinder protection cover upper end connection holes (227); the upper end of the transport pipeline (209) is designed with four rotationally symmetrical transport pipeline upper end connections (228); the transport pipeline upper end connections (228) are all designed with transport pipeline upper end connection holes (229); and the outer surface of the transport pipeline (209) is designed with a transport pipeline high-pressure gas pipe connection joint (230).

4. The quick-detachable fine weight device for cemented carbide powder material discharging system according to claim 2, characterized in that: The cylinder (207) is sleeved with the cylinder protection cover (208); the cylinder protection cover upper end connection (226) at the upper end of the cylinder protection cover (208) and the connector lower end connection (223) at the lower end of the connector (206) are snap-fitted via a secondary snap-fit ​​(204), wherein the cylinder protection cover upper end connection hole (227), the connector lower end connection hole (224), and the secondary snap-fit ​​hole (219) are aligned and then the limit pin (104) is plugged in; the arc valve core ( The arc valve core protection cover (220) of the connecting body (205) is sleeved with the connecting body protection cover (225) of the connecting body (206), wherein the arc valve core (205) is threadedly connected with the telescopic rod of the cylinder (207) when sleeved; the sealing ring (203) is placed in the connecting body upper end connection (221) at the upper end of the connecting body (206); the connecting body upper end connection (221) at the upper end of the connecting body (206) is connected to the secondary chamber lower end connection (201) at the lower end of the secondary chamber (201). The protective cover (202) is connected to the card slot (212) at the lower end of the secondary compartment (201) through the protective cover card docking platform (216), wherein the protective cover card docking platforms (215) and the protective cover card docking holes (218) of the two protective covers (202) are plugged into each other, and the upper end connection hole (222) of the connector, the lower end connection hole (214) of the secondary compartment, the secondary card buckle hole (219), and the limit pin slot (216) are connected to each other. 17) After the alignment, the limit pin (104) is plugged in; the secondary bin upper end connection (210) at the upper end of the secondary bin (201) and the tapered end boss (112) at the lower end of the primary main body valve core (101) are connected through the transport pipe upper end connection (228) of the transport pipe (209), wherein the limit pin (104) is plugged in after the secondary bin upper end connection hole (211), the transport pipe upper end connection hole (229), and the tapered end connection hole (113) are aligned.

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