Pneumatic pump with magnetic air valve

Abstract

The utility model discloses a kind of pneumatic pump with magnetic force air valve, it is related to pneumatic pump technical field, the pneumatic pump includes pump shell and end cap, end cap is set in the left and right ends of pump shell and forms cavity one between both, cavity two is equipped in pump shell middle, one of the wall surface of end cap is equipped with air inlet port, air inlet port is respectively communicated with the pneumatic passage one of being arranged in one of end cap and the pneumatic passage two of being distributed in another end cap and pump shell, end cap is equipped with magnetic force air valve at the butt joint position of pneumatic passage one and pneumatic passage two, the end of pneumatic passage one and pneumatic passage two close to cavity one is equipped with top set component, the middle of pump shell is equipped with the pump body component in connecting channel and cavity two, the pneumatic pump accurately controls the material quantity pumped by pneumatic pump, magnetic force air valve utilizes magnetic attraction and automatically realizes the reset action of its pneumatic pump internal component, energy consumption reduces, small volume makes pneumatic pump can be used under the condition that installation space is limited.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic pump technology, specifically a pneumatic pump with a magnetic air valve. Background Technology

[0002] With the increasing popularity of pneumatic pumps in the industrial field, their ability to pump corrosive liquids, liquids containing particles and other materials in different applications has been recognized. They solve the problem of media that conventional pumps cannot pump. However, with the increasing demand and application scenarios, existing pneumatic pumps are gradually revealing their technical problems.

[0003] For example, the existing Chinese invention patent application (publication number CN117028217A, publication date November 10, 2023, patent name: A pneumatic pump with an air valve) discloses a pneumatic pump structure with an air valve. However, the air valve of this pneumatic pump is located on the outer edge of the pump body. When using it, the space occupied by the air valve needs to be considered during installation. When installing this pneumatic pump in a small space, the air valve may affect the installation of the pneumatic pump. Moreover, when the pneumatic pump controls the reciprocating motion of the internal pump components through the air valve, it requires the introduction of gas, which requires the external pneumatic components to be working for a long time. This results in relatively high energy consumption when the user uses this pneumatic pump to transfer materials. In addition, the existing pneumatic pump still has defects in the control accuracy of the material pumping volume. Utility Model Content

[0004] To address the technical deficiencies in the background technology, this utility model proposes a pneumatic pump with a magnetic air valve, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows: A pneumatic pump with a magnetic air valve includes a pump housing and end caps. The end caps have cavities (C1) formed at both ends of the pump housing, with diaphragms inside each cavity. A second cavity (C2) is located in the middle of the pump housing. The upper and lower ends of the second cavity are a discharge channel and a feed channel, respectively. The portions of the second cavity connecting the discharge and feed channels are connecting channels. One end cap has an air inlet port on its wall, which connects to the first pneumatic channel (C1) located in one end cap and the pneumatic channels (C1) distributed in the other end cap and the pump housing. Channel 2 is connected, and pneumatic channel 1 and pneumatic channel 2 are respectively connected to the cavities 1 at the left and right ends of the pump housing. The end cover is provided with a magnetic valve at the docking position of pneumatic channel 1 and pneumatic channel 2. The ends of pneumatic channel 1 and pneumatic channel 2 near the cavity 1 are provided with a top sleeve assembly. The end cover is provided with a pneumatic channel 3 connected to the air inlet port in the wall outside the magnetic valve. Pneumatic channel 3 is respectively connected to one of the cavities 1. The middle part of the pump housing is provided with a pump body assembly located in the connecting channel and cavity 2. The connecting channel is connected to cavity 1 through an opening in the middle wall of the pump housing.

[0005] As a further improvement of this utility model, the magnetic air valve includes a valve body, a valve core, a valve stem, a sealing cover, a magnet, and a magnetic bead. The end cover has a mating hole on its wall near the air inlet, communicating with pneumatic channels one, two, and three. The valve body is fixedly connected to the mating hole. The valve core is fitted into the end of the valve body near pneumatic channel one. The valve stem is fixedly connected to the end of the valve core away from pneumatic channel one. The sealing cover is fixedly connected to the end of the valve body outside the end cover. The top sleeve assembly in pneumatic channel one communicates with pneumatic channel three. The inner wall of the sealing cover has... The valve body has a groove 1, within which a magnet fitting seat is fitted. The magnet fitting seat has a fitting groove 1. The magnet fits into the fitting groove 1 and is fixed between the sealing cover and the magnet fitting seat. The end of the valve stem away from the valve core 1 is fitted with a fixing cover. The magnetic bead fits into the fixing cover and is fixed between the fixing cover and the end of the valve stem away from the valve core 1. The valve body has several vent holes arranged linearly along the axis of the valve body 1. The wall surface of the middle section of the valve core 1 has at least two annular grooves 2. The pneumatic channel 3 is located outside the vent holes and communicates with the internal space of the valve body 1 located at the location of the grooves 2.

[0006] As a further improvement of this utility model, the wall surface of the valve body one away from the valve core is provided with at least two through holes one in the circumferential direction. The mating hole one is connected to the internal space of the valve body one away from the valve core through the through hole one. The pneumatic channel two is provided with a pneumatic channel four on the end cover wall surface near the end of the cavity one. The pneumatic channel four is connected to the end of the pneumatic channel two near the top sleeve assembly side.

[0007] As a further improvement of this utility model, the top sleeve assembly includes a fixed sleeve and a push rod. The fixed sleeve is provided at the end of pneumatic channel one away from the air inlet port and at the end of pneumatic channel two away from the air inlet port. Both pneumatic channel one and pneumatic channel two communicate with the internal space of one end of the fixed sleeve. The push rod is fitted inside the fixed sleeve and slides along the axial direction of the fixed sleeve. A sealing end is fixedly connected to the end of the push rod near the communication position of pneumatic channel one and pneumatic channel two. The end of the push rod away from the sealing end is provided with a... The ejector end moves within the cavity. The wall of the fixed sleeve near the ejector end has at least one through hole two. The outer wall of the middle section of the fixed sleeve has an annular partition. The partition separates the internal spaces of pneumatic channel one and pneumatic channel two. The space connecting pneumatic channel two and pneumatic channel four is connected to the space between the sealing end and the ejector end in the fixed sleeve through through hole two. The space connecting pneumatic channel one and pneumatic channel three is connected to the space between the sealing end and the ejector end in the fixed sleeve through through hole two.

[0008] As a further improvement of this utility model, a rubber valve is provided in the end of the pneumatic channel three near the cavity one and the end of the pneumatic channel four near the cavity one. The rubber valve includes a valve body two and a rubber cap. One end of the valve body two is fixedly connected to a mating hole two provided in the end cap near the side wall of the cavity. The pneumatic channels three and four are provided with rubber caps in the space outside the end of the valve body two away from the mating hole two. The outer edge of the rubber cap is a deformable edge that is annular and has a variable diameter. The rubber cap separates the space of the pneumatic channel three where the valve body two is located and the space of the pneumatic channel four where the valve body two is located.

[0009] As a further improvement of this utility model, the valve body two is provided with a through hole three in the middle, the axial cross section of the middle part of the cap is gyroscope-shaped, the end cap is provided with a mating hole three communicating with the through hole three on the wall below the valve body two, and a silencer one is fitted in the mating hole three.

[0010] As a further improvement of this utility model, the pump body assembly includes a ball valve, a central shaft, and a top cover. At least two ball valves are arranged along the height direction in the connecting channel. The connecting channels located at the front and rear ends of the second cavity are respectively connected to the first cavity located at the left and right ends of the pump housing. The central shaft is movably connected to the wall of the pump housing located on the outer side of the second cavity. A top cover is provided at both axial ends of the central shaft. The top cover is located in the first cavity outside the diaphragm.

[0011] As a further improvement of this utility model, the ball valve includes a valve seat and a valve core 2. The valve core 2 is located in a chamber 1 at the bottom of the valve seat. The bottom of the valve seat is provided with a through hole 4. The valve seat at the lower position in the connecting channel has its chamber 1 connected to the feed channel through the through hole 4. The part of the valve seat above the chamber 1 is provided with a chamber 2. The top of the valve seat is provided with a through hole 5. The valve seat at the higher position in the connecting channel and the valve seat at the lower position in the connecting channel are connected by the vertical connection of the through hole 5 and the through hole 4. The valve seat has a plurality of through holes 6 circumferentially provided on the outer wall of the chamber 2. The opening is located outside the through hole 6 of the valve seat at the lower position in the connecting channel. The valve seat at the higher position in the connecting channel is connected to the discharge channel through the through hole 6.

[0012] As a further improvement of this utility model, the pump casing is provided with a mating hole four on the wall surface at the top of the connecting channel, and a silencer two is fitted inside the mating hole four. The valve seat located at a high position in the connecting channel has its through hole five located below the silencer two.

[0013] As a further improvement of this utility model, the edge of the diaphragm is located between the walls of the pump housing and the end cover on the adjacent side. Both the pump housing and the end cover have annular grooves on their adjacent side walls near the edge of the diaphragm. A sealing ring is fitted inside the groove of the end cover. Several fixing posts are fitted through the pump housing and the end cover. The fixing posts are arranged circumferentially around the central axis of the pump housing and the end cover. The fixing posts penetrate the edge of the diaphragm. The wall of the end cover near the axial end of the fixing posts has a mating hole. A washer is provided in the space outside the axial end of the fixing post in the mating hole. A nut that is pressed against the end face of the washer is connected to the axial end of the fixing post by a threaded connection.

[0014] The beneficial effects of this utility model are as follows: When gas is delivered into the pneumatic channel three, the magnetic valve intermittently blocks the gas delivery action of the pneumatic channel three, causing errors in the expansion and contraction amplitude of the diaphragms on both sides of the pneumatic pump in the cavity one, thereby accurately controlling the alternating expansion amplitude of the diaphragms on both sides and the stroke of the pump body assembly in the cavity one, thus precisely controlling the amount of material pumped out by the pneumatic pump; moreover, the magnetic valve automatically realizes the reset action of the internal components that control the on / off state of the pneumatic channel three using magnetic attraction, which can reduce the energy consumption of the pneumatic pump during operation; in addition, the magnetic valve is set inside the pneumatic pump, which can reduce the size of the pneumatic pump, making the pneumatic pump occupy less space during use, and enabling the pneumatic pump to be used in situations with limited installation space. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of the pneumatic pump.

[0016] Figure 2Schematic diagram of the internal structure of the pneumatic pump Figure 1 .

[0017] Figure 3 Schematic diagram of the internal structure of the pneumatic pump Figure 2 .

[0018] Figure 4 Schematic diagram of the internal structure of the pneumatic pump Figure 3 .

[0019] Figure 5 This is a schematic diagram showing the connection between pneumatic channel one and pneumatic channel three.

[0020] Figure 6 This is a schematic diagram of the structure of the pneumatic channel near the air intake port.

[0021] Figure 7 This is a schematic diagram of the pneumatic channel located in the middle section of the end cap.

[0022] Figure 8 This is a schematic diagram of the pneumatic channel two.

[0023] Figure 9 This is a schematic diagram of the pneumatic channel three.

[0024] Figure 10 This is a schematic diagram of the structure when the magnetic air valve is installed inside the end cover.

[0025] Figure 11 This is a schematic diagram of the structure of the magnetic valve and the pneumatic channel connecting the two parts.

[0026] Figure 12 This is an exploded view of the components of a magnetic valve.

[0027] Figure 13 Schematic diagram of the external structure of the top cover component Figure 1 .

[0028] Figure 14 Schematic diagram of the external structure of the top cover component Figure 2 .

[0029] Figure 15 This is an exploded view of the components of the top sleeve assembly.

[0030] Figure 16 This is a schematic diagram showing the installation of the glue valve in pneumatic channel three and pneumatic channel four.

[0031] Figure 17 This is a schematic diagram of the structure of the glue valve.

[0032] Figure 18 This is a schematic diagram of the structure when the central shaft and the top cover are connected.

[0033] Figure 19This is a schematic diagram of the pump casing.

[0034] Figure 20 This is a schematic diagram of a ball valve.

[0035] Figure 21 This is a schematic diagram of the structure when the ball valve is installed inside the pump casing.

[0036] Figure 22 This is a schematic diagram of the structure when the edge of the diaphragm is fixed between the pump casing and the end cover by a fixing post.

[0037] Figure 23 This is a schematic diagram of the structure when the fixing post is fixed to the end cap.

[0038] In the diagram, 1. Pump casing; 11. Cavity II; 111. Discharge channel; 112. Feed channel; 113. Connecting channel; 12. Opening; 13. Mating hole IV; 14. Silencer II; 2. End cap; 21. Air inlet port; 22. Pneumatic channel I; 23. Pneumatic channel III; 24. Mating hole I; 26. Pneumatic channel IV; 27. Mating hole II; 28. Mating hole III; 29. ​​Silencer I; 3. Cavity I; 4. Diaphragm; 5. Pneumatic channel II; 6. Magnetic valve; 61. Valve body I; 611. Vent hole; 612. Through hole I; 62. Valve core I; 621. Groove II; 63. Valve stem; 64. Sealing cap; 641. Groove I; 65. Magnet; 66. Magnetic bead; 67. Magnet 671. Mating seat; 671. Mating groove one; 68. Fixed cover; 7. Top sleeve assembly; 71. Fixed sleeve; 711. Through hole two; 712. Spacer; 72. Push rod; 73. Sealing end; 74. Ejection end; 8. Pump body assembly; 81. Ball valve; 811. Valve seat; 8111. Chamber one; 8112. Through hole four; 8113. Chamber two; 8114. Through hole five; 8115. Through hole six; 812. Valve core two; 82. Central shaft; 83. Top cover; 9. Rubber valve; 91. Valve body two; 911. Through hole three; 92. Rubber cap; 921. Deformable edge; 101. Groove three; 102. Sealing ring; 103. Fixed column; 104. Mating hole five; 105. Washer; 106. Nut. Detailed Implementation

[0039] The embodiments of this utility model will be described below with reference to the accompanying drawings and related examples: This utility model discloses a pneumatic pump with a magnetic air valve, such as Figures 1-9As shown, the pneumatic pump includes a pump housing 1 and an end cover 2. The end cover 2 has a cavity 3 at both ends of the pump housing 1, forming a space between them. A diaphragm 4 is installed inside the cavity 3. A second cavity 11 is located in the middle of the pump housing 1. The upper and lower ends of the second cavity 11 are a discharge channel 111 and a feed channel 112, respectively. A connecting channel 113 connects the discharge channel 111 and the feed channel 112 at their respective ends. One end cover 2 has an air inlet port 21 on its wall. The air inlet port 21 connects to a pneumatic channel 22 located inside one end cover 2 and a pneumatic channel 5 distributed between the other end cover 2 and the pump housing 1. The pneumatic channels 1 and 2 are connected to the cavities 3 at the left and right ends of the pump housing 1, respectively. The end cap 2 is provided with a magnetic valve 6 at the joint position of the pneumatic channels 1 and 2. The ends of the pneumatic channels 1 and 2 are provided with a top sleeve assembly 7 near the cavity 3. The end cap 2 is provided with a pneumatic channel 3 23 connected to the air inlet port 21 in the wall outside the magnetic valve 6. The pneumatic channel 3 23 is connected to one of the cavities 1. The pump housing 1 is provided with a pump body assembly 8 in the middle, located in the connecting channel 113 and the cavity 2 11. The connecting channel 113 is connected to the cavity 3 through the opening 12 in the middle wall of the pump housing 1.

[0040] It should be noted that when the pneumatic pump is working, an air inlet pipe (not shown in the figure) is connected to the air inlet port 21 to supply air to the pneumatic pump. Simultaneously, the port of the feed channel 112 needs to be connected to a material transfer pipe (not shown in the figure) to input material into the pneumatic pump. The port of the discharge channel 111 needs to be connected to a material output pipe (not shown in the figure) to pump the material out to the next material-using equipment. Gas is transported through the air inlet pipe to pneumatic channels 1 (22), 2 (5), and 3 (23). After entering pneumatic channel 1 (22), the gas enters one of the ends... Within the top sleeve assembly 7 of cover 2, the top sleeve assembly 7 on one side of the pneumatic pump is pushed out into the cavity 3 on one side of the pneumatic pump, thereby driving the pump body assembly 8 to move towards the cavity 3 on the other side of the pneumatic pump. As gas enters the cavity 3 on that side of the pneumatic pump, the diaphragm 4 in that cavity 3 is also pushed and moves towards the cavity 3 on the other side of the pneumatic pump. After the gas enters the channel 3, it is output to the cavity 3 near the end of the cavity 3, further pushing the diaphragm 4 in the cavity 3 towards the cavity 3 on the other side of the pneumatic pump. At the same time, the pump... The portion of the pump body assembly 8 within the cavity 3 on the other side of the pneumatic pump no longer obstructs the opening 12 on the other side of the pneumatic pump. Material in the feed channel 112 enters the cavity 3 on the other side of the pneumatic pump through the opening 12 of one of the connecting channels 113. Then, gas transmitted from the pneumatic channel 2 5 enters the top sleeve assembly 7 of the other end cover 2, causing the top sleeve assembly 7 on the other side of the pneumatic pump to work and push out into the cavity 3 on the other side of the pneumatic pump, thereby driving the pump body assembly 8 to reset. The diaphragm 4 within the cavity 3 on the other side of the pneumatic pump is also pushed accordingly. As the material moves closer to the pump casing 1, the material in the cavity 3 on the other side of the pneumatic pump is also pressed into the connecting channel 113 and enters the discharge channel 111 through the pump body assembly 8. At the same time, the material in the feed channel 112 also enters the cavity 3 through another opening 12. Thus, when the gas is subsequently transported to the pneumatic channels 22, 5, and 23 through the ventilation pipe, a reciprocating material conveying operation is achieved, so that the material is continuously pumped into the discharge channel 111, thereby achieving the effect of pumping the material out to the next material-using equipment. When gas is delivered into the pneumatic channel 23, the magnetic valve 6 intermittently interrupts the gas delivery action of the pneumatic channel 23, causing errors in the expansion and contraction amplitude of the diaphragms 4 on both sides of the pneumatic pump within the cavity 3. This allows for precise control of the alternating expansion amplitude of the diaphragms 4 on both sides and the stroke of the pump assembly 8 within the cavity, thereby accurately controlling the amount of material pumped out by the pneumatic pump and reducing energy consumption during operation. Furthermore, the magnetic valve 6, located inside the pneumatic pump, reduces the pump's size, allowing it to occupy less space during use and enabling its operation even in situations with limited installation space.

[0041] It needs to be further explained that, such as Figures 1-12 As shown, the magnetic air valve 6 includes a valve body 61, a valve core 62, a valve stem 63, a sealing cover 64, a magnet 65, and a magnetic bead 66. The end cover 2 has a mating hole 24 on its wall near the air inlet port 21, communicating with pneumatic channels 22, 5, and 3. The valve body 61 is fixedly connected to the mating hole 24. The valve core 62 is fitted into the end of the valve body 61 near the pneumatic channel 22. The valve stem 63 is fixedly connected to the end of the valve core 62 away from the pneumatic channel 22. The sealing cover 64 is fixedly connected to the end of the valve body 61 outside the end cover 2. The top sleeve assembly 7 in the pneumatic channel 22 communicates with the pneumatic channel 23. The inner wall of the sealing cover 64 has a groove 641. A magnet fitting seat 67 is fitted inside the groove 641. The magnet fitting seat 67 has a fitting groove 671. The magnet 65 fits in the fitting groove 671 and is fixed between the sealing cover 64 and the magnet fitting seat 67. The end of the valve stem 63 away from the valve core 62 is fitted with a fixing cover 68. The magnetic bead 66 fits in the fixing cover 68 and is fixed between the fixing cover 68 and the end of the valve stem 63 away from the valve core 62. The valve body 61 has several vent holes 611 arranged linearly along the axis of the valve body 61. The wall of the middle section of the valve core 62 has at least two annular grooves 621. The pneumatic channel 23 is located outside the vent holes 611 and communicates with the internal space of the valve body 61 located in the grooves 621.

[0042] After entering the pneumatic channel 3 23, the gas enters the valve body 1 61 through the vent 611. The gas inside the valve body 1 61 pushes the valve core 622, located in the groove 2 621, to move away from the sealing cover 64. As gas is continuously supplied into the pneumatic channel 3 23, the valve core 622 continuously moves away from the sealing cover 64 until it seals the vent 611 along the path of the pneumatic channel 3 23. The portion of the pneumatic channel 3 23 connecting to the mating hole 24 is then sealed, and the valve core 62 moves to the position where the mating hole 24 connects to the pneumatic channel 23. When the port connected to hole 24 is closed, the top sleeve assembly 7 and diaphragm 4 near the side of pneumatic channel 23 move to the maximum stroke of the cavity 3 on the other side of the pneumatic pump, and the amount of material injected into the cavity 3 on the other side of the pneumatic pump also reaches its maximum. In addition, the attraction of the magnetic bead 66 on the valve stem 63 by the magnet 65 allows the valve core position to be reset when gas is no longer introduced into the pneumatic channel 23, thereby opening the part of the pneumatic channel 23 connected to the mating hole 24 so that gas can be introduced into the cavity 3 through the pneumatic channel 23 next time.

[0043] Specifically, such as Figures 9-12As shown, the wall surface of the valve body 61 away from the valve core 62 is provided with at least two through holes 612 in the circumferential direction. The mating hole 24 is connected to the internal space of the valve body 61 away from the valve core 62 through the through holes 612. The pneumatic channel 25 is provided with a pneumatic channel 4 26 on the wall surface of the end cap 2 near the end of the cavity 3. The pneumatic channel 4 26 is connected to the end of the pneumatic channel 25 near the top sleeve assembly 7.

[0044] The gas entering the pneumatic channel 25 will enter the space where the mating hole 24 is located, and then enter the valve body 61 through the through hole 612. Then, it will push the valve core in the space near the valve stem 63 of the valve body 61, so that the valve core moves faster and faster away from the sealing cover 64.

[0045] Specifically, such as Figure 3 , Figure 13 , Figure 14 and Figure 15 As shown, the top sleeve assembly 7 includes a fixed sleeve 71 and a push rod 72. The fixed sleeve 71 is provided at the ends of pneumatic channel one 22 and pneumatic channel two 5 away from the air inlet port 21. Both pneumatic channel one 22 and pneumatic channel two 5 communicate with the internal space of one end of the fixed sleeve 71. The push rod 72 is fitted inside the fixed sleeve 71 and slides along the axial direction of the fixed sleeve 71. A sealing end 73 is fixedly connected to the end of the push rod 72 near the communication position of pneumatic channel one 22 and pneumatic channel two 5. The end of the push rod 72 away from the sealing end 73 is provided with a top that moves within the cavity one 3. The fixed sleeve 71 has at least one through hole 711 on the wall near the ejector end 74. The outer wall of the middle section of the fixed sleeve 71 has an annular partition 712. The partition 712 separates the internal spaces of the pneumatic channel 1 22 and the pneumatic channel 2 5. The space connecting the pneumatic channel 2 5 and the pneumatic channel 4 26 is connected to the space between the sealing end 73 and the ejector end 74 in the fixed sleeve 71 through the through hole 711. The space connecting the pneumatic channel 1 22 and the pneumatic channel 3 23 is connected to the space between the sealing end 73 and the ejector end 74 in the fixed sleeve 71 through the through hole 711.

[0046] In this configuration, the end of the fixed sleeve 71 that connects to both pneumatic channel 1 22 and pneumatic channel 2 5 will cause the push rod 72 to move into cavity 1 3 when gas is introduced into pneumatic channel 1 22 and pneumatic channel 2 5, thereby pushing the diaphragm 4 and pump assembly 8 to move. Gas in pneumatic channel 3 23 enters pneumatic channel 1 22 and then enters the space between the sealing end 73 and the ejection end 74 of the fixed sleeve 71 through through hole 2 711, thereby pushing the push rod 72 to move away from cavity 1 3. Gas in pneumatic channel 2 5 enters pneumatic channel 4 26 and then enters the space between the sealing end 73 and the ejection end 74 of the fixed sleeve 71 through through hole 2 711, thereby pushing the push rod 72 to move away from cavity 1 3. This allows the push rods 72 on both sides of the pneumatic pump to automatically reset when the pneumatic pump is working, avoiding any impact on the movement of the pump assembly 8 and the diaphragm 4.

[0047] Furthermore, such as Figure 9 , Figure 16 and Figure 17 As shown, both the pneumatic channel 23 near the end of cavity 3 and the pneumatic channel 26 near the end of cavity 3 are equipped with a rubber valve 9. The rubber valve 9 includes a valve body 91 and a rubber cap 92. One end of the valve body 91 is fixedly connected to a mating hole 27 provided in the end cover 2 near the side wall of cavity 3. The rubber cap 92 is provided in the space outside the end of valve body 91 away from mating hole 27 in both pneumatic channels 23 and 26. The outer edge of the rubber cap 92 is a deformable edge 921 that is annular and has a variable diameter. The rubber cap 92 separates the space of pneumatic channel 23 where valve body 91 is located and the space of pneumatic channel 26 where valve body 91 is located.

[0048] When gas is introduced into pneumatic channel 3 23, the cap 92 moves towards the top of valve body 2 91 under the force of the gas. At the same time, the deformable edge 921 deforms under the force of the gas, allowing gas to pass through pneumatic channel 3 23 outside the cap 92. This allows gas to be output from the end of pneumatic channel 3 23 near cavity 1 3, thereby pushing diaphragm 4 and pump assembly 8 to move away from pneumatic channel 3 23. When gas is introduced into pneumatic channel 2 5, the cap 92 moves towards the top of valve body 2 91 under the force of the gas. At the same time, the deformable edge 921 deforms under the force of the gas, allowing gas to pass through pneumatic channel 4 26 outside the cap 92. This allows gas to be output from the end of pneumatic channel 4 26 near cavity 1 3, thereby pushing diaphragm 4 and pump assembly 8 to move away from pneumatic channel 4 26. This achieves the movement of diaphragm 4 and pump assembly 8 on both sides of the pneumatic pump.

[0049] Furthermore, such as Figure 16 and Figure 17 As shown, the valve body 2 91 has a through hole 3 911 in the middle, the axial cross section of the middle part of the cap 92 is gyroscope-shaped, and the end cover 2 has a mating hole 3 28 communicating with the through hole 3 911 on the wall below the valve body 2 91. A muffler 1 29 is fitted in the mating hole 3 28.

[0050] When the diaphragm 4 and pump body assembly 8 on one side of the pneumatic pump move towards the pneumatic channel 3 23, the gas in the cavity 1 3 near the pneumatic channel 3 23 will enter the pneumatic channel 3 23, pushing the rubber cap 92 upward. The pneumatic channel 3 23 above the valve body 2 91 is separated by the rubber cap 92, and the gas in the cavity 1 3 will enter the through hole 3 911 through the pneumatic channel 3 23, thereby depressurizing through the pneumatic channel 3 23 on the side of the silencer 1 29; while the diaphragm 4 on one side of the pneumatic pump When plate 4 and pump body assembly 8 move toward the direction of pneumatic channel 4 26, the gas in cavity 3 near pneumatic channel 4 26 will enter pneumatic channel 4 26, pushing the rubber cap 92 to move upward as a whole. The pneumatic channel 4 26 above valve body 2 91 is separated by the rubber cap 92, and the gas in cavity 3 will enter through hole 3 911 from pneumatic channel 4 26, thereby depressurizing through pneumatic channel 4 26 on the side of silencer 29. The use of silencer 29 can reduce the noise during depressurization.

[0051] It needs to be further explained that, such as Figure 3 , Figure 18 , Figure 19 , Figure 20 and Figure 21 As shown, the pump body assembly 8 includes a ball valve 81, a central shaft 82, and a top cover 83. At least two ball valves 81 are arranged along the height direction in the connecting channel 113. The connecting channels 113 located at the front and rear ends of the second cavity 11 are respectively connected to the first cavity 3 located at the left and right ends of the pump housing 1. The central shaft 82 is movably connected to the wall of the pump housing 1 located outside the second cavity 11. The two axial ends of the central shaft 82 are provided with top covers 83. The top covers 83 are located in the first cavity 3 outside the diaphragm 4.

[0052] When the top cover 83 in one chamber 3 of the pneumatic pump is pushed by the diaphragm 4 and the top sleeve assembly 7 and moves towards the other chamber 3, the material in one chamber 3 enters the connecting channel 113 through one of the openings 12, and then enters the discharge channel 111 after passing through the ball valve 81 located at the higher position in the connecting channel 113. At the same time, the top cover 83 in the other chamber 3 moves away from the side near the opening 12, and the material in the feed channel 112 enters through the ball valve 81 located at the lower position in the other connecting channel 113, and then enters the discharge channel 111. The opening 12 enters the cavity 3; by continuously supplying air to the pneumatic channel 22, pneumatic channel 5, and pneumatic channel 23, the top sleeve assembly 7 pushes out the top cover 83, and the central shaft 82 moves in the middle of the pump casing 1 along its axial direction, the operation of these three internal components of the pneumatic pump causes the state of the ball valve 81 in the two connecting channels 113 to change, thereby controlling the opening and closing of the connecting channels 113, and thus automatically controlling the operation of material entering the cavity 3 from the feed channel 112, material entering the connecting channel 113 from the cavity 3, and material entering the discharge channel 111 from the connecting channel 113.

[0053] Specifically, such as Figure 3 , Figure 19 , Figure 20 and Figure 21 As shown, the ball valve 81 includes a valve seat 811 and a valve core 812. The valve core 812 is located in a chamber 8111 at the bottom of the valve seat 811. The bottom of the valve seat 811 is provided with a through hole 8112. The valve seat 811, located at a lower position in the connecting channel 113, has its chamber 8111 connected to the feed channel 112 through the through hole 8112. The portion of the valve seat 811 above the chamber 8111 is provided with a chamber 8113. The top of the valve seat 811 is provided with a through hole 8114. The valve seat 811 at the higher position in the connecting channel 113 and the valve seat 811 at the lower position in the connecting channel 113 are connected by the upper and lower connection of the through hole five 8114 and the through hole four 8112. The valve seat 811 is provided with several through holes six 8115 on the circumferential side of the wall outside the chamber two 8113. The opening 12 is located outside the through holes six 8115 of the valve seat 811 at the lower position in the connecting channel 113. The valve seat 811 at the higher position in the connecting channel 113 is connected to the discharge channel 111 through the through holes six 8115.

[0054] When the top cover 83 in one of the chambers 3 of the pneumatic pump is pushed by the diaphragm 4 and the top sleeve assembly 7 and moves towards the other chamber 3, the material in one of the chambers 3 will enter the connecting channel 113 through one of the openings 12. At this time, the material passing through the connecting channel 113 passes through the through hole 8112 of the valve seat 811 located at the higher position in the connecting channel 113, and pushes up the valve core 812 located at the higher position in the connecting channel 113. The material in the connecting channel 113 is located at... The material is discharged from the higher chamber 8111 into the discharge channel 111; and after entering one of the connecting channels 113 through the opening 12, it enters the lower chamber 8113 within the connecting channel 113. In the lower chamber 8113 of the connecting channel 113, the valve core 812 is squeezed into the lower through hole 8112, thereby blocking the connection between the connecting channel 113 and the feed channel 112, preventing the material in the connecting channel 113 from flowing back into the feed channel 112. Simultaneously, the top cover 83 in another cavity 3 will move away from the opening 12 near that position, and after the pressure in the connecting channel 113 decreases, the material in the feed channel 112 will push up the valve core 812 located at the lower position in the connecting channel 113, and the material will enter the connecting channel 113 through the through hole 8112 located at the lower position in the other connecting channel 113, and then enter the cavity 3 through the opening 12. Meanwhile, the pressure in the connecting channel 113 decreases, and the valve core 812 located at the lower position in the connecting channel 113... The second ball valve 812 will move towards the through hole 8112 located at a higher position in the connecting channel 113 and close it, thereby blocking the material from moving into the valve seat 811 located at a higher position in the connecting channel 113; through the ball valves 81 at different height positions in the two connecting channels 113, the position of the valve body 91 of the ball valve 81 in the cavity 3 changes, so as to realize the automatic control of the operation of material entering the cavity 3 from the feed channel 112, material entering the connecting channel 113 from the cavity 3, and material entering the discharge channel 111 from the connecting channel 113.

[0055] Specifically, such as Figure 21 As shown, the pump casing 1 has a mating hole 4 13 on the wall at the top of the connecting channel 113. A silencer 2 14 is fitted inside the mating hole 4 13. The valve seat 811 is located at a high position inside the connecting channel 113, and its through hole 5 8114 is located below the silencer 2 14.

[0056] The connecting channel 113 allows for internal pressure relief through its top end, while the silencer 14 located at the top end of the connecting channel 113 reduces noise during pressure relief.

[0057] Specifically, such as Figure 19 , Figure 22 and Figure 23As shown, the edge of the diaphragm 4 is located between the walls of the pump housing 1 and the end cover 2 on the adjacent sides. Both the pump housing 1 and the end cover 2 have annular grooves 101 on their adjacent side walls near the edge of the diaphragm 4. A sealing ring 102 fits into the groove 101 of the end cover 2. Several fixing posts 103 are connected through the pump housing 1 and the end cover 2. The fixing posts 103 are arranged circumferentially around the central axis 82 of the pump housing 1 and the end cover 2. The fixing posts 103 penetrate the edge of the diaphragm 4. The wall of the end cover 2 near the axial end of the fixing post 103 has a mating hole 104. A washer 105 is provided in the space outside the axial end of the fixing post 103 in the mating hole 104. A nut 106 is connected to the axial end of the fixing post 103 by a threaded connection and is pressed against the end face of the washer 105.

[0058] When assembling the pneumatic pump, first insert the fixing post 103 into the mounting hole of one of the end caps 2. After inserting the sealing ring 102 into the groove 101 of the end cap 2, assemble the diaphragm 4 to the end face of one of the end caps 2 according to its mounting hole position with the fixing post 103. Then, connect the end cap 2 to one side of the pump housing 1 along the mounting hole of the fixing post 103 on the pump housing 1. The other end cap 2 is connected to the other side of the pump housing 1 in the same way. After the end caps 2 on both sides of the pneumatic pump are connected, place the washer 105 in the mating hole 104 and install the nut 106 to the fixed end cap 2. The axial end of the fixed column 103 is tightened, thereby fixing the end cover 2 to both sides of the pump housing 1. The edge of the diaphragm 4 and the sealing ring 102 are also pressed between the walls of the pump housing 1 and the end cover 2 on the adjacent sides. This not only fixes the position of the diaphragm 4, but also seals the gap on the outside of the cavity 3 through the sealing ring 102, preventing the material in the cavity 3 from flowing out of this gap. When disassembling and maintaining the pneumatic pump, after unscrewing all the nuts 106 of the pneumatic pump, the fixed column 103 can be pulled out from one side of the pneumatic pump to separate it from the pump housing 1 and the end cover 2, which can achieve the initial disassembly of the pneumatic pump. The operation is convenient.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pneumatic pump with a magnetic air valve, the pneumatic pump comprising a pump housing and an end cover, wherein the end cover has a cavity I located between the left and right ends of the pump housing, the cavity I containing a diaphragm, and a cavity II located in the middle of the pump housing, the upper and lower ends of the cavity II being a discharge channel and a feed channel, respectively, and the portion of the cavity II at the front and rear ends of the discharge channel and the feed channel that connects the two channels is a connecting channel, characterized in that... One of the end caps has an air inlet port on its wall surface. The air inlet port is connected to a pneumatic channel one located in one of the end caps and a pneumatic channel two located in the other end cap and the pump housing. The pneumatic channel one and the pneumatic channel two are connected to cavities one at the left and right ends of the pump housing, respectively. The end cap has a magnetic valve at the joint position of the pneumatic channel one and the pneumatic channel two. The ends of the pneumatic channel one and the pneumatic channel two near the cavity one are provided with a top sleeve assembly. The wall surface of the end cap located outside the magnetic valve is provided with a pneumatic channel three connected to the air inlet port. The pneumatic channel three is connected to one of the cavities one. The middle part of the pump housing is provided with a pump body assembly located in the connecting channel and the cavity two. The connecting channel is connected to the cavity one through an opening in the middle wall surface of the pump housing.

2. The pneumatic pump according to claim 1, characterized in that, The magnetic pneumatic valve includes a valve body, a valve core, a valve stem, a sealing cap, a magnet, and a magnetic bead. The end cap has a mating hole on its wall near the air inlet, communicating with pneumatic channels one, two, and three. The valve body is fixedly connected to the mating hole. The valve core is fitted into the end of the valve body near pneumatic channel one. The valve stem is fixedly connected to the end of the valve core away from pneumatic channel one. The sealing cap is fixedly connected to the end of the valve body outside the end cap. The top sleeve assembly in pneumatic channel one communicates with pneumatic channel three. The inner wall of the sealing cap has a groove. A magnet fitting seat is fitted inside the groove one, and the magnet fitting seat has a fitting groove one. The magnet fits in the fitting groove one and is fixed between the sealing cover and the magnet fitting seat. A fixing cover fits in the end of the valve stem away from the valve core one. The magnetic bead fits in the fixing cover and is fixed between the fixing cover and the end of the valve stem away from the valve core one. The valve body has several vent holes arranged in a straight line along the axis of the valve body one. The wall surface of the middle section of the valve core one has at least two annular grooves two. The pneumatic channel three is located outside the vent holes and communicates with the internal space of the valve body one located at the position of the groove two.

3. The pneumatic pump according to claim 2, characterized in that, The valve body 1 has at least two through holes 1 on the circumferential side of the wall away from the valve core. The mating hole 1 connects to the internal space of the valve body 1 away from the valve core through the through hole 1. The pneumatic channel 2 has a pneumatic channel 4 on the end cap wall near the end of the cavity 1. The pneumatic channel 4 connects to the end of the pneumatic channel 2 near the top sleeve assembly.

4. The pneumatic pump according to claim 3, characterized in that, The top sleeve assembly includes a fixed sleeve and a push rod. The fixed sleeve is provided at the ends of pneumatic channel one and pneumatic channel two away from the air inlet port. Both pneumatic channel one and pneumatic channel two are connected to the internal space of one end of the fixed sleeve. The push rod is fitted inside the fixed sleeve and slides along the axial direction of the fixed sleeve. A sealing end is fixedly connected to the end of the push rod near the connection position of pneumatic channel one and pneumatic channel two. The end of the push rod away from the sealing end is provided with an ejection end that moves within cavity one. The wall surface of the fixed sleeve near the ejection end is provided with at least one through hole two. The outer wall of the middle section of the fixed sleeve is provided with an annular partition, which separates the internal spaces of pneumatic channel one and pneumatic channel two. The space connecting pneumatic channel two and pneumatic channel four is connected to the space between the sealing end and the ejection end in the fixed sleeve through through hole two. The space connecting pneumatic channel one and pneumatic channel three is connected to the space between the sealing end and the ejection end in the fixed sleeve through through hole two.

5. The pneumatic pump according to claim 4, characterized in that, Both the pneumatic channel three and the pneumatic channel four near the end of the cavity one are equipped with a rubber valve. The rubber valve includes a valve body two and a rubber cap. One end of the valve body two is fixedly connected to a mating hole two provided on the side wall of the end cap near the cavity. Both the pneumatic channel three and the pneumatic channel four are equipped with rubber caps in the space outside the end of the valve body two away from the mating hole two. The outer edge of the rubber cap is a deformable edge that is annular and has a variable diameter. The rubber cap separates the space of the pneumatic channel three at the position of the valve body two and the space of the pneumatic channel four at the position of the valve body two.

6. The pneumatic pump according to claim 5, characterized in that, The valve body 2 has a through hole 3 in the middle, the axial cross section of the middle part of the cap is gyroscope-shaped, the end cap is provided with a mating hole 3 communicating with the through hole 3 on the wall below the valve body 2, and a muffler 1 is fitted in the mating hole 3.

7. The pneumatic pump according to claim 1, characterized in that, The pump body assembly includes a ball valve, a central shaft, and a top cover. At least two ball valves are arranged along the height direction in the connecting channel. The connecting channels located at the front and rear ends of the second cavity are respectively connected to the first cavity located at the left and right ends of the pump housing. The central shaft is movably connected to the wall of the pump housing located on the outer side of the second cavity. A top cover is provided at both axial ends of the central shaft. The top cover is located in the first cavity outside the diaphragm.

8. The pneumatic pump according to claim 7, characterized in that, The ball valve includes a valve seat and a valve core 2. The valve core 2 is located in a chamber 1 at the bottom of the valve seat. The bottom of the valve seat is provided with a through hole 4. The valve seat at the lower position in the connecting channel has its chamber 1 connected to the feed channel through the through hole 4. The part of the valve seat above the chamber 1 is provided with a chamber 2. The top of the valve seat is provided with a through hole 5. The valve seat at the higher position in the connecting channel and the valve seat at the lower position in the connecting channel are connected by the vertical connection of the through holes 5 and 4. The valve seat has several through holes 6 circumferentially arranged on the outer wall of the chamber 2. The opening is located outside the through holes 6 of the valve seat at the lower position in the connecting channel. The valve seat at the higher position in the connecting channel is connected to the discharge channel through the through holes 6.

9. The pneumatic pump according to claim 8, characterized in that, The pump casing has a mating hole four on the wall at the top of the connecting channel. A silencer two is fitted inside the mating hole four. The valve seat is located at a high position in the connecting channel, and its through hole five is located below the silencer two.

10. The pneumatic pump according to claim 7, characterized in that, The edge of the diaphragm is located between the walls of the pump housing and the end cover on the adjacent side. Both the pump housing and the end cover have annular grooves on their adjacent side walls near the edge of the diaphragm. A sealing ring fits into the groove of the end cover. Several fixing posts are connected through the pump housing and the end cover. The fixing posts are arranged circumferentially around the central axis of the pump housing and the end cover. The fixing posts penetrate the edge of the diaphragm. The wall of the end cover near the axial end of the fixing post has a mating hole. A washer is placed in the space outside the axial end of the fixing post in the mating hole. A nut that is pressed against the end face of the washer is connected to the axial end of the fixing post by a threaded connection.

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