CN110332169B - Pneumatic reversing valve - Google Patents
Pneumatic reversing valve Download PDFInfo
- Publication number
- CN110332169B CN110332169B CN201910750263.7A CN201910750263A CN110332169B CN 110332169 B CN110332169 B CN 110332169B CN 201910750263 A CN201910750263 A CN 201910750263A CN 110332169 B CN110332169 B CN 110332169B
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- 238000009434 installation Methods 0.000 claims abstract description 32
- 238000003780 insertion Methods 0.000 claims abstract description 29
- 230000037431 insertion Effects 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims description 136
- 238000009423 ventilation Methods 0.000 description 9
- 230000000903 blocking effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Multiple-Way Valves (AREA)
- Safety Valves (AREA)
- Check Valves (AREA)
Abstract
The invention relates to a pneumatic reversing valve, which comprises a valve body, a first valve core, a second valve core and a control device, wherein the first valve core is arranged in a first valve core mounting cavity of the valve body, an insertion part of the second valve core stretches into a second air passage of the first valve core until the first valve core and the valve body are both seated on a base of the second valve core, and the first valve core is communicated with the second valve core; the control device comprises a first valve rod, the first valve rod is arranged in a control device installation cavity of the second valve core, the head part of the first valve rod faces the third air passage, and the tail part of the first valve rod penetrates through the outside of the control device installation cavity to form a pressing part which is convenient for a user to push the first valve rod to seal or dredge the third air passage. The user lightly pushes the first valve rod, the third air flue of the second valve core is blocked by the first valve rod, the external air flows in the pneumatic reversing valve and pushes the first valve core to act on the base of the second valve core, and the first valve core is pushed to move by the pressure of the external air, so that the purpose of saving labor is achieved, and air flow switching is realized.
Description
Technical Field
The invention relates to a pneumatic reversing valve.
Background
At present, the rifle body of pneumatic nail rifle on the market is provided with the casing that is used for installing pneumatic reversing valve, when the casing of present gas nail rifle was processed, firstly open pore the reamer from the casing left end toward casing inner chamber, then open pore the reamer from the casing right-hand member toward casing inner chamber, because the reamer divides the trompil twice, lead to the centre of a circle degree of casing inner chamber to be different easily, consequently pneumatic reversing valve's subassembly is installed at casing inner chamber, lead to sealing performance poor easily, the condition such as gas leakage appears, the product qualification rate is low, moreover pneumatic reversing valve needs to pack into casing inner chamber from the casing left end respectively, the casing right-hand member is installed very complicated, current pneumatic reversing valve needs the buckle just can adjust pneumatic reversing valve's gas switching-over, user experience is poor moreover.
Disclosure of Invention
The invention aims to provide the pneumatic reversing valve which is assembled in a multilayer coaxial overlapping mode and is simple and labor-saving to install by utilizing pneumatic drive to adjust the airflow direction of the pneumatic reversing valve.
The purpose of the invention is realized in the following way:
the pneumatic reversing valve comprises a valve body, a first valve core, a second valve core and a control device, wherein the valve body is a valve body which is penetrated up and down, a first air passage is formed in an inner cavity of the valve body, a first valve core mounting cavity is formed in the inner cavity of the valve body, first vent holes are formed in an outer wall of the upper part of the valve body at intervals along the circumferential direction of the valve body, second vent holes are formed in an outer wall of the middle part of the valve body at intervals along the circumferential direction of the valve body, and third vent holes are formed in an outer wall of the lower part of the valve body at intervals along the circumferential direction of the valve body;
the first valve core is a valve core which is penetrated up and down, a second air passage is formed in the inner cavity of the first valve core, and fourth air holes are formed in the outer wall of the first valve core at intervals along the circumferential direction of the outer wall of the first valve core;
the upper part of the second valve core is an insertion part, the lower part of the second valve core is a base, a third air passage is formed in the insertion part, the inner cavity of the base is a control device mounting cavity, the control device mounting cavity is communicated with the third air passage, fifth vent holes are formed in the surface of the base at intervals on the periphery of the insertion part, and sixth vent holes which are communicated with the fifth vent holes and the control device mounting cavity are formed in the side wall of the base at intervals along the circumferential direction of the side wall of the base;
the first valve core is arranged in a first valve core mounting cavity of the valve body, the insertion part of the second valve core stretches into the second air passage of the first valve core until the first valve core and the valve body are both seated on the base of the second valve core, and the first valve core is communicated with the second valve core;
the control device comprises a first valve rod, the first valve rod is arranged in a control device installation cavity of the second valve core, the head part of the first valve rod faces the third air passage, and the tail part of the first valve rod penetrates through the outside of the control device installation cavity to form a pressing part which is convenient for a user to push the first valve rod to seal or dredge the third air passage.
According to the invention, the initial state of the pneumatic reversing valve is that the first valve rod is far away from the third air passage of the second valve core, external gas flows in the pneumatic reversing valve and pushes the first valve core to move away from the base of the second valve core, the first valve core is pushed to move by the pressure of the external gas, so that the purpose of saving labor is achieved, the external gas is discharged to the air cylinder along the first air vent in the pneumatic reversing valve, and the gas in the air cylinder is discharged to the pneumatic reversing valve along the second air vent;
when a user lightly pushes the first valve rod, the first valve rod blocks the third air passage of the second valve core, external air flows in the pneumatic reversing valve and pushes the first valve core to act on the base of the second valve core, the first valve core is pushed to move by means of the pressure of the external air, the labor-saving purpose is achieved, the external air is discharged into the air cylinder along the second air passage in the pneumatic reversing valve, and the air in the air cylinder is discharged into the pneumatic reversing valve along the first air passage, so that air flow switching is achieved, and the operation is quite simple.
And the valve body, the first valve core, the second valve core and the control device of the pneumatic reversing valve are arranged in the inner cavity of the shell in a stacked manner, so that the pneumatic reversing valve is more firmly installed, the volume of the pneumatic reversing valve is reduced, the occupied space of the pneumatic reversing valve is smaller, and the practicability of the pneumatic reversing valve is improved.
The aim of the invention can be also solved by adopting the following technical measures:
as a more specific scheme, the head of the first valve rod is a conical head, the tail of the first valve rod is a cylindrical pressing part, and the user pushes the pressing part to enable the conical head of the first valve rod to extend out of or leave the third air passage, so that the third air passage is sealed or dredged. The head of the first valve rod is a conical head, the conical head is inserted into the third air passage to be tightly attached to the inner wall of the third air passage to seal the third air passage, and the conical head is adopted, so that the effect of sealing the third air passage by the first valve rod is better, and the practicability of the pneumatic reversing valve is improved.
As a more specific scheme, the valve further comprises a first bottom cover, a first valve rod channel which is convenient for a first valve rod to pass through is formed in the first bottom cover, a control device mounting cavity of the second valve core is sealed by the first bottom cover, and the tail part of the first valve rod passes through the first valve rod channel and stretches out of the control device mounting cavity to form the pressing part.
As a more specific scheme, the control device further comprises a valve seat, a seventh vent hole is formed in the top of the valve seat, an eighth vent hole is formed in the side wall of the valve seat, the seventh vent hole is communicated with the eighth vent hole, the valve seat is arranged in a control device mounting cavity of the second valve core, the seventh vent hole is communicated with the third air passage, the eighth vent hole is communicated with the sixth vent hole, and the head of the first valve rod stretches into or leaves the seventh vent hole to seal or dredge the seventh vent hole. The valve seat is a plastic valve seat, a seventh vent hole is formed in the top of the valve seat, an eighth vent hole is formed in the side wall of the valve seat, the valve seat is arranged in a control device mounting cavity, the seventh vent hole is communicated with a third air passage, the eighth vent hole is communicated with a sixth vent hole, the valve seat is a plastic valve seat, the head of the first valve rod is inserted into the sixth vent hole of the valve seat due to elasticity of plastic, the head of the first valve rod completely blocks the sixth vent hole and seals the sixth vent hole, and the tightness of the pneumatic reversing valve is greatly improved.
As a more specific scheme, the valve body inner cavity is also provided with a second valve core installation cavity, the first valve core is arranged in the first valve core installation cavity, and the second valve core is arranged in the second valve core installation cavity, so that the valve body, the first valve core and the second valve core are assembled to form the integrated pneumatic reversing valve. The first valve core is arranged in the first valve core installation cavity, the second valve core is arranged in the second valve core installation cavity, the valve body, the first valve core and the second valve core are assembled to form the integrated pneumatic reversing valve, the integrated pneumatic reversing valve is inserted into the inner cavity of the shell of the pneumatic nailing gun, the installation is very simple, the installation spare and accessory parts are avoided, the installation efficiency is improved, and a user can maintain the pneumatic nailing gun by himself.
As a more specific scheme, the periphery of the valve body above the first vent hole is provided with a first sealing ring, the periphery of the valve body below the first vent hole is provided with a second sealing ring, the valve body between the first sealing ring and the second sealing ring forms a fourth air passage, the first vent hole is communicated with the fourth air passage, the periphery of the valve body below the second vent hole is provided with a third sealing ring, the valve body between the second sealing ring and the third sealing ring forms a fifth air passage, the second vent hole is communicated with the fifth air passage, the periphery of the valve body below the third vent hole is provided with a fourth sealing ring, the valve body between the third sealing ring and the fourth sealing ring forms a sixth air passage, and the fourth vent hole is communicated with the sixth air passage. The valve body is arranged in the inner cavity of the shell, and the first sealing ring, the second sealing ring and the fourth sealing ring are tightly attached to the inner cavity of the shell, so that the tightness of the pneumatic reversing valve is improved.
As a more specific scheme, a fifth sealing ring and a sixth sealing ring are arranged on the upper portion of the first valve core, a seventh air passage is formed by the first valve core between the fifth sealing ring and the sixth sealing ring, a seventh sealing ring is arranged on the lower portion of the first valve core above the third air hole, a first buffer ring is arranged on the first valve core between the sixth sealing ring and the seventh sealing ring, an eighth sealing ring is arranged on the lower portion of the first valve core below the third air hole, an eighth air passage is formed by the first valve core between the seventh sealing ring and the eighth sealing ring, and the fourth air hole is communicated with the eighth air passage. The first valve core is arranged in the valve body, and the fifth sealing ring, the sixth sealing ring, the seventh sealing ring and the eighth sealing ring are clung to the inner cavity of the valve body, so that the tightness of the pneumatic reversing valve is improved.
As a more specific scheme, the inner cavity of the insertion part is vertically communicated, the third air passage is formed in the inner cavity of the insertion part, a ninth sealing ring and a tenth sealing ring are arranged in the insertion part of the second valve core, a ninth air passage is formed by the second valve core between the ninth sealing ring and the tenth sealing ring, a second buffer ring is arranged on the surface of the base of the second valve core, an eleventh sealing ring is arranged above the fifth air hole, an eleventh sealing ring is arranged below the fifth air hole on the base of the second valve core, a tenth air passage is formed by the second valve core between the eleventh sealing ring and the twelfth sealing ring, the sixth air hole is communicated with the tenth air passage, and a third buffer ring is arranged in the control device installation cavity of the second valve core. The insertion part of the second valve core is inserted into the second air passage of the first valve core, the ninth sealing ring and the tenth sealing ring are clung to the inner wall of the first valve core, the eleventh sealing ring and the twelfth sealing ring are clung to the inner wall of the shell, and the tightness of the pneumatic reversing valve is improved.
As a more specific scheme, the inner cavity of the insertion part is provided with the third air passage, the front end of the third air passage is closed, the rear end of the third air passage is communicated with the inner cavity of the base, the insertion part of the second valve core is provided with a ninth sealing ring and a tenth sealing ring, a ninth air passage is formed by the second valve core arranged between the ninth sealing ring and the tenth sealing ring, a tenth vent hole communicated with the third air passage is formed in the second valve core arranged on the ninth air passage, a second buffer ring is arranged on the surface of the base of the second valve core, an eleventh sealing ring is arranged above the fifth vent hole, a twelfth sealing ring is arranged below the fifth vent hole on the base of the second valve core, a tenth air passage is formed by the second valve core arranged between the eleventh sealing ring and the twelfth sealing ring, the sixth vent hole is communicated with the tenth air passage, and a third buffer ring is arranged in the control device mounting cavity of the second valve core. The invention changes the air inlet or the air outlet through changing the second valve core, thereby changing the air inlet or the air outlet of the air inlet, the air outlet, the first air vent and the second air vent, adjusting the air inlet or the air outlet position of the pneumatic reversing valve, leading the air passage reversing valve to meet the use of different products,
as a more specific scheme, the control device is a second valve rod, the second valve rod is a strip-shaped first valve rod, the diameter of the head of the second valve rod is larger than that of the tail of the second valve rod, and the head of the second valve rod is sleeved with a fifteenth sealing ring and a sixteenth sealing ring.
As a more specific scheme, the novel valve further comprises a second bottom cover, a second valve rod channel which is convenient for a second valve rod to pass through is formed in the second bottom cover, a ninth vent hole which is communicated with the second valve rod channel is formed in the outer wall of the second valve rod channel, the second bottom cover is inserted into a control device accommodating cavity of a second valve core, a third air channel of the second valve core is communicated with the second valve rod channel of the second valve rod, a sixth vent hole of the second valve core is communicated with the ninth vent hole of the second valve rod, the second valve rod is arranged in the second valve rod channel, the tail part of the second valve rod extends out of the second valve rod channel to form the pressing part, and the head part of the second valve rod slides in the second valve rod channel to block the third air channel or enable the third air channel, the second valve rod channel, the ninth through hole and the sixth vent hole to be communicated.
The invention has the beneficial effects that:
according to the invention, the initial state of the pneumatic reversing valve is that the second valve rod is far away from the third air passage of the second valve core, external air flows in the pneumatic reversing valve and pushes the first valve core to act on the base of the second valve core, the first valve core is pushed to move by the pressure of the external air, so that the purpose of saving labor is achieved, the external air is discharged into the air cylinder along the second air passage in the pneumatic reversing valve, and the air in the air cylinder is discharged into the pneumatic reversing valve along the first air passage;
when the user lightly pushes the second valve rod, external gas flows in the pneumatic reversing valve and pushes the first valve core to move away from the base of the second valve core, the first valve core is pushed to move by means of the pressure of the external gas, the labor saving purpose is achieved, the external gas is discharged to the air cylinder in the pneumatic reversing valve along the first air vent, and the gas in the air cylinder is discharged to the pneumatic reversing valve along the second air vent, so that air flow switching is achieved, and the operation is quite simple.
The beneficial effects of the invention are as follows:
according to the invention, the initial state of the pneumatic reversing valve is that the first valve rod is far away from the third air passage of the second valve core, external gas flows in the pneumatic reversing valve and pushes the first valve core to move away from the base of the second valve core, the first valve core is pushed to move by the pressure of the external gas, so that the purpose of saving labor is achieved, the external gas is discharged to the air cylinder along the first air vent in the pneumatic reversing valve, and the gas in the air cylinder is discharged to the pneumatic reversing valve along the second air vent;
when a user lightly pushes the first valve rod, the first valve rod blocks the third air passage of the second valve core, external air flows in the pneumatic reversing valve and pushes the first valve core to act on the base of the second valve core, the first valve core is pushed to move by means of the pressure of the external air, the labor-saving purpose is achieved, the external air is discharged into the air cylinder along the second air passage in the pneumatic reversing valve, and the air in the air cylinder is discharged into the pneumatic reversing valve along the first air passage, so that air flow switching is achieved, and the operation is quite simple.
And the valve body, the first valve core, the second valve core and the control device of the pneumatic reversing valve are arranged in the inner cavity of the shell in a multilayer coaxial overlapping mode, so that the pneumatic reversing valve is more firmly installed, the volume of the pneumatic reversing valve is reduced, the occupied space of the pneumatic reversing valve is smaller, and the practicability of the pneumatic reversing valve is improved.
Drawings
FIG. 1 is a schematic view of a pneumatic nailer; FIG. 2 is a cross-sectional view of the pneumatic nailer; FIG. 3 is a schematic diagram of an assembly of a pneumatic nailer with a pneumatic reversing valve; FIG. 4 is a schematic view of a pneumatic reversing valve (first vent) installed in the interior cavity of a housing according to embodiment 1 of the present invention; FIG. 5 is a schematic view of a pneumatic reversing valve (second vent exhaust) installed in the inner cavity of a housing according to embodiment 1 of the present invention; FIG. 6 is an assembly view of a pneumatic reversing valve according to embodiment 1 of the present invention; FIG. 7 is a schematic view of a pneumatic reversing valve (first vent) according to embodiment 2 of the present invention mounted in the interior cavity of the housing; FIG. 8 is a schematic view of a pneumatic reversing valve (second vent exhaust) installed in the inner cavity of a housing according to embodiment 2 of the present invention; fig. 9 is an assembly view of a pneumatic reversing valve according to embodiment 2 of the present invention; FIG. 10 is a schematic view of a pneumatic reversing valve (first vent) mounted in the interior cavity of a housing according to embodiment 3 of the present invention; FIG. 11 is a schematic view of a pneumatic reversing valve (second vent exhaust) installed in the inner cavity of a housing according to embodiment 3 of the present invention; FIG. 12 is an assembly view of a pneumatic reversing valve according to embodiment 3 of the present invention; fig. 13 is a schematic view of an integrated pneumatic reversing valve according to embodiment 4 of the present invention using the control device according to embodiment 2; FIG. 14 is an assembly view of an integrated pneumatic reversing valve employing the control apparatus of embodiment 2 according to embodiment 4 of the present invention; FIG. 15 is a schematic view of an integrated pneumatic reversing valve according to embodiment 5 of the present invention using the control device according to embodiment 3; FIG. 16 is an assembly view of an integrated pneumatic reversing valve of embodiment 5 of the present invention employing the control apparatus of embodiment 3; FIG. 17 is a schematic view of a pneumatic reversing valve (exhaust port venting) mounted in the interior cavity of a housing according to embodiment 6 of the present invention; FIG. 18 is a schematic view of a pneumatic reversing valve (air inlet exhaust) mounted in the inner cavity of a housing according to embodiment 6 of the present invention; fig. 19 is an assembly view of the pneumatic reversing valve of embodiment 6 of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings and examples:
embodiment 1, referring to fig. 1 to 6, a pneumatic nailing gun, the pneumatic nailing gun comprises a gun body 500 and a pneumatic reversing valve, the gun body 500 is provided with a shell 1, the shell 1 is provided with an air inlet 11, an air outlet 12, a first air port 13 and a second air port 14, and the air inlet 11, the air outlet 12, the first air port 13 and the second air port 14 are respectively communicated with an inner cavity of the shell 1.
The pneumatic reversing valve comprises a valve body 2, a first valve core 3, a second valve core 4, a control device and a first bottom cover 6. The valve body 2 is a valve body 2 which is vertically communicated, a first air passage 101 is formed in the inner cavity of the valve body 2, a first valve core installation cavity 200 is formed in the inner cavity of the valve body 2, first vent holes 21 are formed in the outer wall of the upper portion of the valve body 2 at intervals along the circumferential direction of the valve body, second vent holes 22 are formed in the outer wall of the middle portion of the valve body 2 at intervals along the circumferential direction of the valve body, and third vent holes 23 are formed in the outer wall of the lower portion of the valve body 2 at intervals along the circumferential direction of the valve body.
The periphery of the valve body 2, which is positioned above the first vent hole 21, is provided with a first sealing ring 24, the periphery of the valve body 2, which is positioned below the first vent hole 21, is provided with a second sealing ring 25, the valve body 2, which is positioned between the first sealing ring 24 and the second sealing ring 25, forms a fourth air passage 104, the first vent hole 21 is communicated with the fourth air passage 104, the periphery of the valve body 2, which is positioned below the second vent hole 22, is provided with a third sealing ring 26, the valve body 2, which is positioned between the second sealing ring 25 and the third sealing ring 26, forms a fifth air passage 105, the second vent hole 22 is communicated with the fifth air passage 105, the periphery of the valve body 2, which is positioned below the third vent hole 23, is provided with a fourth sealing ring 27, the valve body 2, which is positioned between the third sealing ring 26 and the fourth sealing ring 27, forms a sixth air passage 106, and the fourth vent hole 31 is communicated with the sixth air passage 106.
The first valve core 3 is a valve core which is vertically penetrated, a second air passage 102 is formed in the inner cavity of the first valve core 3, fourth air passages 31 are formed in the outer wall of the first valve core 3 at intervals along the circumferential direction of the first valve core, a fifth sealing ring 32 and a sixth sealing ring 33 are arranged on the upper portion of the first valve core 3, a seventh air passage 107 is formed in the first valve core 3 between the fifth sealing ring 32 and the sixth sealing ring 33, a seventh sealing ring 34 is arranged on the lower portion of the first valve core 3 above the third air passage 23, an eighth sealing ring 35 is arranged on the lower portion of the first valve core 3 below the third air passage 23, an eighth air passage 108 is formed in the first valve core 3 between the seventh sealing ring 34 and the eighth sealing ring 35, the fourth air passage 31 is communicated with the eighth air passage 108, and a first buffer ring 36 is arranged on the first valve core 3 between the sixth sealing ring 33 and the seventh sealing ring 34.
The upper portion of second case 4 is the insertion portion 41, and the lower part of second case 4 is base 42, insertion portion 41 is the upper and lower portion of lining up insertion portion 41, and the inner chamber of insertion portion 41 forms third air flue 103, the inner chamber of base 42 is controlling means installation cavity 43, controlling means installation cavity 43 and third air flue 103 intercommunication, and the surface of base 42 is located the peripheral interval of insertion portion 41 and is equipped with fifth air vent 44, and the lateral wall of base 42 is equipped with the sixth air vent 45 of intercommunication fifth air vent 44 and controlling means installation cavity 43 along its circumferencial direction interval, and base 42 surface is provided with second buffer ring 46, is provided with third buffer ring 47 in the controlling means installation cavity 43.
The insert portion 41 of the second valve element 4 is provided with a ninth sealing ring 411 and a tenth sealing ring 412, the second valve element 4 located between the ninth sealing ring 411 and the tenth sealing ring 412 forms a ninth air passage 109, an eleventh sealing ring 421 is disposed above the fifth air vent 44 on the base 42 of the second valve element 4, a twelfth sealing ring 422 is disposed below the fifth air vent 44 on the base 42 of the second valve element 4, a tenth air passage 110 is formed by the second valve element 4 located between the eleventh sealing ring 421 and the twelfth sealing ring 422, and the sixth air vent 45 is communicated with the tenth air passage 110.
The control device is a first valve rod 5, the head of the first valve rod 5 is a conical head, the tail of the first valve rod 5 is a cylindrical pressing part 10, and a thirteenth sealing ring 51 is arranged at the junction of the head of the first valve rod 5 and the tail of the first valve rod 5.
The first bottom cover 6 is provided with a fourteenth packing 61, and the first bottom cover 6 is provided with a first valve stem passage 62 for facilitating the passage of the first valve stem 5.
The pneumatic reversing valve is arranged in the shell 1 to form a pneumatic reversing device:
the valve body 2 is arranged in the inner cavity of the shell 1, and a first sealing ring 24, a second sealing ring 25, a third sealing ring 26 and a fourth sealing ring 27 of the valve body 2 are tightly attached to the inner wall of the shell 1.
The first valve core 3 is arranged in the first valve core installation cavity 200 of the valve body 2, and the fifth sealing ring 32, the sixth sealing ring 33, the seventh sealing ring 34 and the eighth sealing ring 35 of the first valve core 3 are tightly attached to the inner wall of the valve body 2.
The insertion part 41 of the second valve core 4 extends into the second air passage 102 of the first valve core 3 until the first valve core 3 and the valve body 2 are both seated on the base 42 of the second valve core 4, and the first valve core 3 and the second valve core 4 are communicated.
The first base 42 is arranged in the shell 1, the first base 42 seals the control device mounting cavity 43 of the second valve core 4, the first valve rod 5 is arranged in the first valve rod channel 62, the conical head of the first valve rod 5 faces the third air channel 103, and the tail of the first valve rod 5 extends out of the first valve rod channel 62 to form the pressing part 10.
The pneumatic reversing device is connected with the air cylinder 100, the air cylinder 100 comprises a cylinder body and a piston rod 400, the first air vent 13 of the shell 1 is communicated with one end of the cylinder body, the second air vent 14 of the shell 1 is communicated with the other end of the cylinder body, and therefore the first air vent 13, the cylinder body and the second air vent 14 are communicated, and the piston rod 400 is pushed to act.
Example 1 principle of operation
The first valve stem 5 is not pressed:
the first valve rod 5 is in an initial state, the conical head of the first valve rod 5 is far away from the third air passage 103, external air enters the inner cavity of the shell 1 through the air inlet 11, the external air is discharged out of the fifth air vent 44 along the inner cavity of the shell 1, the second air passage 102, the third air passage 103, the control device mounting cavity 43 and the sixth air vent 45, and the external air discharged out of the fifth air vent 44 pushes the first valve core 3 to move until the first valve core 3 abuts against the valve body 2, so that the position of the first valve core 3 is adjusted.
At this time, the external air enters the inner cavity of the housing 1 through the air inlet 11, is then discharged out of the first air vent 13 along the first air passage 101, the seventh air passage 107, the first air vent 21 and the fourth air passage 104, and then enters the cylinder 100 to push the piston rod 400 to move.
Due to the action of the piston rod 400, the piston rod 400 enables the gas of the cylinder 100 to enter the inner cavity of the shell 1 along the second ventilation opening 14, and then is discharged out of the exhaust opening 12 along the sixth air passage 106, the third air passage 23, the eighth air passage 108, the fourth air passage 31, the ninth air passage 109, the fourth air passage 31, the eighth air passage 108, the second ventilation opening 22 and the sixth air passage 106.
Pressing the first valve stem 5:
the conical head of the first valve rod 5 is inserted into the third air passage 103 and seals the third air passage 103, and external air enters the inner cavity of the shell 1 through the air inlet 11, and the external air pushes the first valve core 3 to be seated on the base 42 of the second valve core 4, so that the position of the first valve core 3 is adjusted.
At this time, the external air enters the inner cavity of the housing 1 through the air inlet 11, is then discharged out of the second air inlet 14 along the second air passage 102, the fourth air passage 31, the eighth air passage 108, the third air passage 23 and the sixth air passage 106, and then enters the cylinder 100 to push the piston rod 400 to move.
As the piston rod 400 moves, the piston rod 400 moves the gas of the cylinder 100 into the inner cavity of the housing 1 along the first vent hole 13, and then out of the exhaust port 12 along the fourth air passage 104, the first vent hole 21, the seventh air passage 107, the second vent hole 22, and the fifth air passage 105.
Embodiment 2 in combination with fig. 7 to 9, embodiment 2 differs from embodiment 1 in that: the control device of embodiment 2 further comprises a valve seat 7, wherein the valve seat 7 is a plastic valve seat 7, a seventh vent hole 71 is formed in the top of the valve seat 7, an eighth vent hole 72 is formed in the side wall of the valve seat 7, and the seventh vent hole 71 is communicated with the eighth vent hole 72.
The valve seat 7 is disposed in the control device mounting chamber 43 of the second valve element 4, the seventh vent hole 71 communicates with the third air passage 103, and the eighth vent hole 72 communicates with the sixth vent hole 45.
Example 2 principle of operation
When the first valve stem 5 is not pressed:
the first valve rod 5 is in an initial state, the conical head of the first valve rod 5 is far away from the seventh vent hole 71, and thus far away from the third air passage 103, external air enters the inner cavity of the shell 1 through the air inlet 11, and the external air is communicated with the seventh vent hole 71, the control device mounting cavity 43, the eighth vent hole 72, the sixth vent hole 45 and the fifth vent hole 44 along the inner cavity of the shell 1, the second air passage 102, the third air passage 103, the seventh vent hole 71, the control device mounting cavity 43, the eighth vent hole 72, the sixth vent hole 45 and the fifth vent hole 44, so that the external air is discharged through the fifth vent hole 44, the first valve core 3 is pushed to act, and the position of the first valve core 3 is adjusted.
At this time, the external air enters the inner cavity of the housing 1 through the air inlet 11, is then discharged out of the first air vent 13 along the first air passage 101, the seventh air passage 107, the first air vent 21 and the fourth air passage 104, and then enters the cylinder 100 to push the piston rod 400 to move.
Due to the action of the piston rod 400, the piston rod 400 enables the gas of the cylinder 100 to enter the inner cavity of the shell 1 along the second ventilation opening 14, and then is discharged out of the exhaust opening 12 along the sixth air passage 106, the third air passage 23, the eighth air passage 108, the fourth air passage 31, the ninth air passage 109, the fourth air passage 31, the eighth air passage 108, the second ventilation opening 22 and the sixth air passage 106.
When the first valve stem 5 is pressed:
the conical head of the first valve rod 5 blocks the seventh vent hole 71, thereby blocking the third air passage 103, so that the first valve core 3 sits on the base 42 of the second valve core 4, and the position of the first valve core 3 is adjusted.
At this time, the external air enters the inner cavity of the housing 1 through the air inlet 11, is then discharged out of the second air inlet 14 along the second air passage 102, the fourth air passage 31, the eighth air passage 108, the third air passage 23 and the sixth air passage 106, and then enters the cylinder 100 to push the piston rod 400 to move.
As the piston rod 400 moves, the piston rod 400 moves the gas of the cylinder 100 into the inner cavity of the housing 1 along the first vent hole 13, and then out of the exhaust port 12 along the fourth air passage 104, the first vent hole 21, the seventh air passage 107, the second vent hole 22, and the fifth air passage 105.
Embodiment 3, in combination with fig. 10 to 12, embodiment 3 differs from embodiment 1 in that: embodiment 3 employs a second valve stem 8 and a second bottom cap 9. The second bottom cover 9 is provided with a second valve rod channel 91 which is convenient for the second valve rod 8 to pass through, the outer wall of the second valve rod channel 91 is provided with a ninth vent hole 92 which is communicated with the second valve rod channel 91, the second bottom cover 9 is inserted into the control device mounting cavity 43 of the second valve core 4, a third air passage 103 of the second valve core 4 is communicated with the second valve rod channel 91 of the second valve rod 8, and a sixth vent hole 45 of the second valve core 4 is communicated with the ninth vent hole 92 of the second valve rod 8.
The second valve rod 8 is a strip valve rod, the diameter of the head of the second valve rod 8 is larger than that of the tail of the second valve rod 8, and the head of the second valve rod 8 is sleeved with a fifteenth sealing ring 81 and a sixteenth sealing ring 82. The second valve rod 8 is disposed in the second valve rod channel 91, the tail of the second valve rod 8 extends out of the second valve rod channel 91 to form the pressing part 10, and the head of the second valve rod 8 slides in the second valve rod channel 91 to block the third air passage 103 or enable the third air passage 103, the second valve rod channel 91, the ninth vent 92 and the sixth vent 45 to be communicated.
Example 3 principle of operation
When the second valve stem 8 is not pressed:
the second valve rod 8 is in an initial condition, the second valve rod 8 is away from the third air passage 103 and seals the ninth air vent 92, thereby blocking the third air passage 103, so that the first valve core 3 sits on the base 42 of the second valve core 4, and the position of the first valve core 3 is adjusted.
At this time, the external air enters the inner cavity of the housing 1 through the air inlet 11, is then discharged out of the second air inlet 14 along the second air passage 102, the fourth air passage 31, the eighth air passage 108, the third air passage 23 and the sixth air passage 106, and then enters the cylinder 100 to push the piston rod 400 to move.
As the piston rod 400 moves, the piston rod 400 moves the gas of the cylinder 100 into the inner cavity of the housing 1 along the first vent hole 13, and then out of the exhaust port 12 along the fourth air passage 104, the first vent hole 21, the seventh air passage 107, the second vent hole 22, and the fifth air passage 105.
When the second valve stem 8 is pressed:
the second valve rod 8 is close to the third air passage 103 and dredges the ninth air vent 92, external air enters the inner cavity of the shell 1 through the air inlet 11, the external air is discharged out of the fifth air vent 44 along the inner cavity of the shell 1, the second air passage 102, the third air passage 103, the control device mounting cavity 43, the ninth air vent 92 and the sixth air vent 45, and the external air discharged through the fifth air vent 44 pushes the first valve core 3 to move until the first valve core 3 abuts against the valve body 2, and the position of the first valve core 3 is adjusted.
At this time, the external air enters the inner cavity of the housing 1 through the air inlet 11, is then discharged out of the first air vent 13 along the first air passage 101, the seventh air passage 107, the first air vent 21 and the fourth air passage 104, and then enters the cylinder 100 to push the piston rod 400 to move.
Due to the action of the piston rod 400, the piston rod 400 enables the gas of the cylinder 100 to enter the inner cavity of the shell 1 along the second ventilation opening 14, and then is discharged out of the exhaust opening 12 along the sixth air passage 106, the third air passage 23, the eighth air passage 108, the fourth air passage 31, the ninth air passage 109, the fourth air passage 31, the eighth air passage 108, the second ventilation opening 22 and the sixth air passage 106.
Example 4, in combination with fig. 13 and 14, example 4 differs from example 1 in that: embodiment 4 the valve body 2 inner chamber still is provided with second case installation cavity 300, first case 3 is arranged in first case installation cavity 200, and second case 4 is arranged in second case installation cavity 300, realizes that valve body 2, first case 3 and second case 4 adopt the coaxial stack mode equipment of multilayer to form the pneumatic switching-over valve of integral type, with the pneumatic switching-over valve insert casing 1 inner chamber can, the installation is very simple.
Moreover, in the embodiment 4, the control device of the embodiment 2 is adopted, the valve seat 7 is placed in the control device mounting cavity 43 of the second valve element 4, the first bottom cover 6 seals the control device mounting cavity 43 of the second valve element 4, the first valve rod 5 passes through the first valve rod passage 62 of the first bottom cover 6, the head portion of the first valve rod 5 extends into the control device mounting cavity 43, and the tail portion of the first valve rod 5 extends out of the first bottom cover 6 to form the pressing portion 10.
Embodiment 5, as shown in fig. 15 to 16, embodiment 5 differs from embodiment 4 in that embodiment 5 employs the control device of embodiment 3, the second bottom cover 9 seals the control device mounting chamber 43 of the second valve element 4, the second valve stem 8 passes through the second valve stem passage 91, the head of the second valve stem 8 protrudes into the control device mounting chamber 43, and the first bottom cover 6 at the tail of the second valve stem 8 forms the pressing portion 10.
The pneumatic reversing valve is suitable for a pneumatic nail gun or other pneumatic driving equipment, when the pneumatic reversing valve is assembled, the valve body 2, the first valve core 3, the second valve core 4, the control device and the first bottom cover 6 of the pneumatic reversing valve are sequentially arranged in the inner cavity of the shell 1 of the pneumatic reversing device, and if the pneumatic reversing valve is an integrated pneumatic reversing valve, the integrated pneumatic reversing valve is arranged in the inner cavity of the shell 1, so that the pneumatic reversing valve is quite simple to operate and easy to install.
Embodiment 6, as shown in connection with fig. 17 to 18, embodiment 6 differs from embodiment 2 in that:
the upper portion of second case 4 is the insertion portion 41, and the lower part of second case 4 is base 42, the base 42 inner chamber is controlling means installation cavity 43, the inner chamber of insertion portion 41 is opened there is third air flue 103, and third air flue 103 front end is sealed, and third air flue 103 rear end intercommunication controlling means installation cavity 43, and the surface of base 42 is located the peripheral interval of insertion portion 41 and is equipped with fifth air vent 44, and the lateral wall of base 42 is equipped with the sixth air vent 45 of intercommunication fifth air vent 44 and controlling means installation cavity 43 along its circumferencial direction interval, and base 42 surface is provided with second buffer ring 46, is provided with third buffer ring 47 in the controlling means installation cavity 43.
The insert portion 41 of the second valve element 4 is provided with a ninth sealing ring 411 and a tenth sealing ring 412, the second valve element 4 located between the ninth sealing ring 411 and the tenth sealing ring 412 forms a ninth air passage 109, a tenth air vent 600 communicating with the third air passage 103 is formed in the second valve element 4 located on the ninth air passage 109, an eleventh sealing ring 421 is disposed above the fifth air vent 44 in the base 42 of the second valve element 4, a twelfth sealing ring 422 is disposed below the fifth air vent 44 in the base 42 of the second valve element 4, a tenth air passage 110 is formed in the second valve element 4 located between the eleventh sealing ring 421 and the twelfth sealing ring 422, and the sixth air vent 45 is communicated with the tenth air passage 110.
Example 6 principle of operation
When the first valve stem 5 is not pressed: the first valve rod 5 is in an initial state, the conical head of the first valve rod 5 is far away from the seventh vent hole 71, and thus far away from the third vent hole 103, external air enters the inner cavity of the shell 1 through the second vent hole 14, and the external air is communicated with the control device mounting cavity 43, the eighth vent hole 72, the sixth vent hole 45 and the fifth vent hole 44 along the sixth vent hole 106, the third vent hole 23, the eighth vent hole 108, the fourth vent hole 31, the seventh vent hole 107, the tenth vent hole 600, the third vent hole 103, the seventh vent hole 71, the third vent hole 45 and the fifth vent hole 44, so that the external air is discharged through the fifth vent hole 44, the first valve core 3 is pushed to act, and the position of the first valve core 3 is adjusted.
At this time, the external air enters the inner cavity of the housing 1 through the second air vent 14, then is discharged out of the air outlet 12 along the sixth air passage 106, the third air passage 23, the eighth air passage 108, the fourth air passage 31, the seventh air passage 107, the tenth air passage 600, the third air passage 103, the fourth air passage 31, the eighth air passage 108, the second air passage 22 and the fifth air passage 105, and then enters the cylinder 100 to push the piston rod 400 to move.
Due to the action of the piston rod 400, the piston rod 400 drives the gas of the cylinder 100 into the inner cavity of the shell 1 along the gas inlet 11, and then the gas is discharged out of the first vent 13 along the first gas passage 101, the seventh gas passage 107, the first vent 21 and the fourth gas passage 104.
When the first valve stem 5 is pressed: the conical head of the first valve rod 5 blocks the seventh vent hole 71, thereby blocking the third air passage 103, so that the first valve core 3 sits on the base 42 of the second valve core 4, and the position of the first valve core 3 is adjusted.
At this time, the external air enters the inner cavity of the housing 1 through the second air vent 14, then is discharged out of the air inlet 11 along the sixth air passage 106, the third air vent 23, the eighth air passage 108, the fourth air vent 31, the seventh air passage 107, the tenth air vent 600 and the second air passage 102, and then enters the cylinder 100 to push the piston rod 400 to move.
As the piston rod 400 moves, the piston rod 400 discharges the gas of the cylinder 100 along the exhaust port 12, the fifth air passage 105, the second ventilation hole 22, the seventh air passage 107, the first ventilation hole 21, and the fourth air passage 104 to the outside of the first ventilation hole 13.
According to the invention, the air inlet 11, the air outlet 12, the first air vent 13 and the second air vent 14 are changed by changing the second valve core 4, so that the air inlet or the air outlet position of the pneumatic reversing valve is adjusted, the air passage reversing valve can meet different product uses, and the air inlet or the air outlet position of the air passage reversing valve can be changed by changing the structure of the second valve core 4 in each of the embodiments 1 to 5.
Claims (11)
1. The utility model provides a pneumatic reversing valve, includes valve body, first case, second case and controlling means, its characterized in that:
the valve body is a valve body which is penetrated up and down, a first air passage is formed in the inner cavity of the valve body, a first valve core mounting cavity is formed in the inner cavity of the valve body, first vent holes are formed in the outer wall of the upper part of the valve body at intervals along the circumferential direction of the valve body, second vent holes are formed in the outer wall of the middle part of the valve body at intervals along the circumferential direction of the valve body, and third vent holes are formed in the outer wall of the lower part of the valve body at intervals along the circumferential direction of the valve body;
the first valve core is a valve core which is penetrated up and down, a second air passage is formed in the inner cavity of the first valve core, and fourth air holes are formed in the outer wall of the first valve core at intervals along the circumferential direction of the outer wall of the first valve core;
the upper part of the second valve core is an insertion part, the lower part of the second valve core is a base, a third air passage is formed in the insertion part, the inner cavity of the base is a control device mounting cavity, the control device mounting cavity is communicated with the third air passage, fifth vent holes are formed in the surface of the base at intervals on the periphery of the insertion part, and sixth vent holes which are communicated with the fifth vent holes and the control device mounting cavity are formed in the side wall of the base at intervals along the circumferential direction of the side wall of the base;
the first valve core is arranged in a first valve core mounting cavity of the valve body, the insertion part of the second valve core stretches into the second air passage of the first valve core until the first valve core and the valve body are both seated on the base of the second valve core, and the first valve core is communicated with the second valve core;
the control device comprises a first valve rod, the first valve rod is arranged in a control device installation cavity of the second valve core, the head part of the first valve rod faces the third air passage, and the tail part of the first valve rod penetrates through the outside of the control device installation cavity to form a pressing part which is convenient for a user to push the first valve rod to seal or dredge the third air passage.
2. The pneumatic reversing valve of claim 1, wherein: the head of the first valve rod is a conical head, the tail of the first valve rod is a cylindrical pressing part, and the user pushes the pressing part to enable the conical head of the first valve rod to extend out of or leave the third air passage, so that the third air passage is sealed or dredged.
3. The pneumatic reversing valve of claim 1, wherein: the valve further comprises a first bottom cover, a first valve rod channel which is convenient for a first valve rod to pass through is formed in the first bottom cover, a control device mounting cavity of the second valve core is sealed by the first bottom cover, and the tail part of the first valve rod passes through the first valve rod channel and stretches out of the control device mounting cavity to form the pressing part.
4. The pneumatic reversing valve of claim 1, wherein: the control device further comprises a valve seat, a seventh vent hole is formed in the top of the valve seat, an eighth vent hole is formed in the side wall of the valve seat, the seventh vent hole is communicated with the eighth vent hole, the valve seat is arranged in a control device mounting cavity of the second valve core, the seventh vent hole is communicated with the third air passage, the eighth vent hole is communicated with the sixth vent hole, and the head of the first valve rod stretches into or leaves the seventh vent hole to seal or dredge the seventh vent hole.
5. The pneumatic reversing valve of claim 1, wherein: the valve body inner cavity is also provided with a second valve core installation cavity, the first valve core is arranged in the first valve core installation cavity, and the second valve core is arranged in the second valve core installation cavity, so that the valve body, the first valve core and the second valve core are assembled to form the integrated pneumatic reversing valve.
6. The pneumatic reversing valve of claim 1, wherein: the valve body is located the valve body periphery of first air vent top and is provided with first sealing washer, and the valve body periphery that the valve body is located the valve body below the first air vent is provided with the second sealing washer, and the valve body that is located between first sealing washer and the second sealing washer forms the fourth air flue, first air vent and fourth air flue intercommunication, the valve body periphery that the valve body is located the valve body below the second air vent is provided with the third sealing washer, and the valve body that is located between second sealing washer and the third sealing washer forms the fifth air flue, second air vent and fifth air flue intercommunication, the valve body periphery that the valve body is located the valve body below the third air vent is provided with the fourth sealing washer, and the valve body that is located third sealing washer and fourth sealing washer forms the sixth air flue, fourth air vent and sixth air flue intercommunication.
7. The pneumatic reversing valve of claim 1, wherein: the valve is characterized in that a fifth sealing ring and a sixth sealing ring are arranged on the upper portion of the first valve core, a seventh air passage is formed by the first valve core between the fifth sealing ring and the sixth sealing ring, a seventh sealing ring is arranged on the lower portion of the first valve core above the third air hole, a first buffer ring is arranged on the first valve core between the sixth sealing ring and the seventh sealing ring, an eighth sealing ring is arranged on the lower portion of the first valve core below the third air hole, an eighth air passage is formed by the first valve core between the seventh sealing ring and the eighth sealing ring, and the fourth air hole is communicated with the eighth air passage.
8. The pneumatic reversing valve of claim 1, wherein: the inner cavity of the insertion part is vertically communicated, the third air passage is formed in the inner cavity of the insertion part, a ninth sealing ring and a tenth sealing ring are arranged at the insertion part of the second valve core, a ninth air passage is formed by the second valve core between the ninth sealing ring and the tenth sealing ring, a second buffer ring is arranged on the surface of the base of the second valve core, an eleventh sealing ring is arranged above the fifth air hole, a twelfth sealing ring is arranged below the fifth air hole on the base of the second valve core, a tenth air passage is formed by the second valve core between the eleventh sealing ring and the twelfth sealing ring, the sixth air hole is communicated with the tenth air passage, and a third buffer ring is arranged in the mounting cavity of the control device of the second valve core.
9. The pneumatic reversing valve of claim 1, wherein: the inner cavity of the insertion part is provided with a third air passage, the front end of the third air passage is closed, the rear end of the third air passage is communicated with the inner cavity of the base, the insertion part of the second valve core is provided with a ninth sealing ring and a tenth sealing ring, a second valve core arranged between the ninth sealing ring and the tenth sealing ring forms a ninth air passage, a tenth vent hole communicated with the third air passage is formed in the second valve core arranged on the ninth air passage, a second buffer ring is arranged on the surface of the base of the second valve core, an eleventh sealing ring is arranged above the fifth vent hole, a twelfth sealing ring is arranged below the fifth vent hole on the base of the second valve core, a tenth air passage is formed by the second valve core arranged between the eleventh sealing ring and the twelfth sealing ring, the sixth vent hole is communicated with the tenth air passage, and a third buffer ring is arranged in the control device mounting cavity of the second valve core.
10. The pneumatic reversing valve of claim 1, wherein: the control device is a second valve rod, the second valve rod is a strip-shaped first valve rod, the diameter of the head of the second valve rod is larger than that of the tail of the second valve rod, and the head of the second valve rod is sleeved with a fifteenth sealing ring and a sixteenth sealing ring.
11. The pneumatic reversing valve of claim 5, wherein: the second valve rod is arranged in the second valve rod channel, the tail part of the second valve rod extends out of the second valve rod channel to form the pressing part, and the head part of the second valve rod slides in the second valve rod channel to block the third air channel or enable the third air channel, the second valve rod channel, the ninth through hole and the sixth through hole to be communicated.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910750263.7A CN110332169B (en) | 2019-08-14 | 2019-08-14 | Pneumatic reversing valve |
| TW109112584A TWI759718B (en) | 2019-08-14 | 2020-04-15 | Pneumatic directional control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910750263.7A CN110332169B (en) | 2019-08-14 | 2019-08-14 | Pneumatic reversing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110332169A CN110332169A (en) | 2019-10-15 |
| CN110332169B true CN110332169B (en) | 2024-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910750263.7A Active CN110332169B (en) | 2019-08-14 | 2019-08-14 | Pneumatic reversing valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110332169B (en) |
| TW (1) | TWI759718B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779723B (en) * | 2020-05-20 | 2022-07-19 | 广东明晖气动科技有限公司 | Pneumatic valve of pneumatic nail gun |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI759718B (en) | 2022-04-01 |
| TW202106998A (en) | 2021-02-16 |
| CN110332169A (en) | 2019-10-15 |
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Address after: 528300 Room 501, building 7, Huakang building, No. 1, Keji fifth road, Xingtan Industrial Zone, Qixing community, Xingtan town, Shunde District, Foshan City, Guangdong Province (residence declaration) Applicant after: GUANGDONG MINGHUI PNEUMATIC TECHNOLOGY Co.,Ltd. Address before: 528300 Liandu Industrial Zone, Leliu Town, Shunde District, Foshan City, Guangdong Province Applicant before: GUANGDONG MINGHUI PNEUMATIC TECHNOLOGY Co.,Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |