CN115234483B - Pneumatic diaphragm pump gas valve chamber and pneumatic diaphragm pump - Google Patents
Pneumatic diaphragm pump gas valve chamber and pneumatic diaphragm pump Download PDFInfo
- Publication number
- CN115234483B CN115234483B CN202211014241.2A CN202211014241A CN115234483B CN 115234483 B CN115234483 B CN 115234483B CN 202211014241 A CN202211014241 A CN 202211014241A CN 115234483 B CN115234483 B CN 115234483B
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- main valve
- pore canal
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- 239000011148 porous material Substances 0.000 claims abstract description 97
- 230000008859 change Effects 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims description 40
- 238000004891 communication Methods 0.000 claims description 36
- 238000007789 sealing Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 4
- 238000012545 processing Methods 0.000 description 11
- 230000009471 action Effects 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
- F04B45/053—Pumps having fluid drive
- F04B45/0536—Pumps having fluid drive the actuating fluid being controlled by one or more valves
Abstract
The utility model discloses a pneumatic diaphragm pump air valve chamber and a pneumatic diaphragm pump, wherein the pneumatic diaphragm pump air valve chamber comprises a connecting rod shaft and a main valve core which are arranged through an air valve chamber body, an exhaust hole is connected to a main valve pore canal, a baffle plate connected with the main valve core is arranged in the exhaust hole, cavities at two sides of the baffle plate are respectively communicated with two feedback cavities of a pilot valve through two throttle holes, an air inlet of the pilot valve is respectively communicated with the two throttle holes through a pilot valve core pore canal arranged on the pilot valve core, when the pilot valve is communicated with a left air chamber cavity, the diaphragm position change pushes the main valve core to drive the baffle plate to deflect leftwards, the throttle mouth of the left throttle hole is gradually smaller than that of the right throttle hole, the left feedback cavity pushes the pilot valve core to separate the air inlet from the left air chamber cavity and is communicated with the right air chamber cavity, the diaphragm position change pushes the main valve core to drive the baffle plate to deflect rightwards, and the throttle mouth of the left throttle hole is gradually larger than that of the right throttle hole, and the right feedback cavity pushes the pilot valve core to lead the air inlet to be communicated with the left air chamber cavity.
Description
Technical Field
The utility model relates to the technical field of pneumatic diaphragm pumps, in particular to a pneumatic diaphragm pump and a pneumatic valve chamber thereof.
Background
The tunnel pollution discharge is an indispensable deriving link in tunnel construction, and a pneumatic diaphragm pump is commonly used at present for tunnel pollution discharge. The pneumatic diaphragm pump is a novel conveying machine, is suitable for conveying liquid in various complex environments, and can convey liquid with particles, high viscosity, easy volatilization, inflammability and high toxicity.
The existing pneumatic diaphragm pump takes compressed gas as power, and drives an elastic diaphragm to move back and forth by means of interaction of a double reversing valve and a booster rod or interaction of a single reversing valve and a connecting rod sliding sleeve, and the two side cavities alternately expand and contract, so that continuous suction and discharge of liquid are finally realized. The combination of the double reversing valves and the auxiliary rod makes the air valve chamber complex in structure, poor in working stability, high in processing difficulty and high in cost; the form of the reversing valve and the connecting rod sliding sleeve is easy to wear, the reversing is unreliable, the flow fluctuation is large, and sometimes the maintenance difficulty is high due to the failure of external air supply.
The utility model provides a many exports reposition of redundant personnel pneumatic diaphragm pump that chinese utility model patent of publication date 2020.12.29, publication number CN212250416U was granted discloses, includes pneumatic diaphragm pump trunk line, pneumatic diaphragm pump trunk line is the frame structure that returns, and the inside four sides of pneumatic diaphragm pump trunk line all diagonal distribution has spherical check valve, air distribution valve is installed to pneumatic diaphragm pump trunk line middle part top, and air distribution valve below is connected with the diaphragm membrane room to the diaphragm membrane room distributes in pneumatic diaphragm pump trunk line both sides middle part, pneumatic diaphragm pump trunk line top middle part is connected with the material and carries the import, and pneumatic diaphragm pump trunk line below middle part front side is connected with the material and carry the export, pneumatic diaphragm pump trunk line below point top and side all are connected with the material and assist the export, and pneumatic diaphragm pump trunk line side's material is assisted the export height that highly is less than the bottom of spherical check valve.
The technical scheme of the patent is that the air distribution valve and the pneumatic body drive the diaphragm chamber to move left and right, but the technical problems of complex structure, high processing difficulty, high processing cost, poor working stability, unreliable reversing, large flow fluctuation and the like of the air valve chamber still exist. Therefore, it is necessary to design a novel pneumatic diaphragm pump.
Disclosure of Invention
Aiming at the defects in the background technology, the utility model provides a pneumatic diaphragm pump air valve chamber and a pneumatic diaphragm pump, which solve the technical problems of complex structure, high processing difficulty, high processing cost, poor working stability, unreliable reversing, large flow fluctuation and the like of the existing pneumatic diaphragm pump air valve chamber.
The technical scheme of the utility model is as follows:
the utility model provides a pneumatic diaphragm pump pneumatic valve room, including the pneumatic valve room body, pass the pneumatic valve room body and be provided with the connecting rod axle that both ends link to each other with the left diaphragm of left air chamber intracavity, the right diaphragm of right air chamber intracavity respectively, it is provided with the main valve pore to run through the pneumatic valve room body, slide in the main valve pore and be provided with the main valve core, the main valve pore is connected with the exhaust hole, be provided with the baffle that links to each other with the main valve core in the exhaust hole, the left cavity of baffle communicates with the left feedback chamber of pilot valve through left orifice, the cavity on the right side of baffle communicates with the right feedback chamber of pilot valve through right orifice, the inlet port of pilot valve communicates with left orifice and right orifice through the guide valve core pore that sets up on the guide valve core. The air valve chamber adopts the structure of the pilot valve to be matched with the baffle plate, and the baffle plate is linked with the left diaphragm in the left air chamber cavity and the right diaphragm in the right air chamber cavity through the main valve core, so that the negative feedback automatic circulation of the pilot valve-diaphragm-main valve-baffle plate-pilot valve is formed, the air valve chamber body has a simple structure, the reversing action is closely related to the diaphragm state, the action is not delayed, and the flow is not fluctuated.
Further, when the air inlet hole arranged on the pilot valve is communicated with the left air chamber cavity and is separated from the right air chamber cavity, the diaphragm position change pushes the main valve core to enable the right air chamber cavity to be communicated with the exhaust hole and drive the baffle plate to deflect leftwards, the throttle opening of the left throttle hole is gradually smaller than that of the right throttle hole, the left feedback cavity pushes the pilot valve core to enable the air inlet hole to be separated from the left air chamber cavity and communicated with the right air chamber cavity, the diaphragm position change pushes the main valve core to enable the left air chamber cavity to be communicated with the exhaust hole and drive the baffle plate to deflect rightwards, the throttle opening of the left throttle hole is gradually larger than that of the right throttle hole, and the right feedback cavity pushes the pilot valve core to enable the air inlet hole to be communicated with the left air chamber cavity and separated from the right air chamber cavity.
Further, a left convex ring and a right convex ring which are in sealing fit with the main valve pore canal are arranged on the main valve core, a left main valve pore canal inner groove and a right main valve pore canal inner groove are arranged at intervals in the length direction of the main valve pore canal, the diameter of the left main valve pore canal inner groove is larger than that of the left convex ring, the diameter of the right main valve pore canal inner groove is larger than that of the right convex ring, and when the left diaphragm pushes the main valve core to enable the left air chamber to be communicated with the exhaust hole, gas in the left air chamber is communicated with the exhaust hole through the left main valve pore canal inner groove; when the right diaphragm pushes the main valve core to enable the right air chamber cavity to be communicated with the exhaust hole, gas in the right air chamber cavity is communicated with the exhaust hole through the inner groove of the pore canal of the right main valve. By arranging the inner grooves of the left main valve pore canal and the inner grooves of the right main valve pore canal, the stability and reliability of ventilation of the left air chamber cavity and the right air chamber cavity can be fully ensured.
Further, two inner grooves of the left main valve pore canal and two inner grooves of the right main valve pore canal are arranged at intervals and are communicated through a left communication hole, and two inner grooves of the right main valve pore canal are arranged at intervals and are communicated through a right communication hole. The left main valve pore canal inner groove and the right main valve pore canal inner groove are arranged in pairs, so that the stability and reliability of ventilation of the left air chamber cavity and the right air chamber cavity can be further ensured. If the left convex ring is positioned between the two left main valve pore canal inner grooves, the gas in the left gas chamber cavity can be indirectly communicated with the exhaust hole through the left main valve pore canal inner groove at the leftmost side, and can be directly exhausted from the exhaust hole through the left main valve pore canal inner groove at the right side. When the right convex ring is positioned between the inner grooves of the two right main valve pore canals, the gas in the right gas chamber cavity can be indirectly communicated with the exhaust hole through the inner groove of the rightmost right main valve pore canal, and can be directly exhausted from the exhaust hole through the left right main valve pore canal.
Further, the outer port of the left communication hole and the outer port of the right communication hole are both communicated to the outside of the air valve chamber body, so that the air valve chamber is simple in structure and convenient to machine, the corresponding communication holes can be directly machined at the outer port of the left communication hole and the outer port of the right communication hole, the outer port of the left communication hole is provided with a first blocking head, and the outer port of the right communication hole is provided with a second blocking head.
Further, the cross section of the baffle is of a bilaterally symmetrical wedge-shaped structure, the large-diameter end of the baffle is arranged in the exhaust hole, and the tip end of the baffle is connected with the main valve core. The section of the baffle is of a bilaterally symmetrical wedge-shaped structure, so that the elasticity of the baffle can be increased, the assembly can be facilitated, and the sizes of the left throttle orifice and the right throttle orifice in an initial state are kept to be highly uniform.
Further, the exhaust hole and the main valve pore canal are crossed, the large diameter end of the baffle is connected with the exhaust hole through threads, and the tip of the baffle is in plug-in fit with the main valve core. The threaded connection structure is simple to adjust, the pretightening force between the baffle and the main valve core can be adjusted through adjusting the threaded connection position, the initial sizes of the left throttling orifice and the right throttling orifice can be adjusted, and the constant pressure flow is adjustable.
Further, the left orifice comprises a left vertical hole and a left transverse hole, the right orifice comprises a right vertical hole and a right transverse hole, the left transverse hole and the right transverse hole are coaxially arranged and are bilaterally symmetrical with each other about the exhaust hole, the left transverse hole and the right transverse hole penetrate through the air valve chamber body through the exhaust hole, the length and the capacity of the left orifice are ensured to be consistent with those of the right orifice, the two feedback phase responses of the left air chamber cavity and the right air chamber cavity are consistent, the flow is fully reduced, and the mechanical processing is facilitated. The outer port of the left transverse hole is provided with a third blocking head, the outer port of the right transverse hole is provided with a fourth blocking head, the left vertical hole is communicated with the left feedback cavity of the pilot valve, and the right vertical hole is communicated with the right feedback cavity of the pilot valve.
Further, the left plugging head is provided with an axial and circumferential left small hole, the right plugging head is provided with an axial and circumferential right small hole, the left small hole is communicated with the left air chamber cavity, and the right small hole is communicated with the right air chamber cavity.
Further, the pilot valve comprises a pilot valve body, pilot valve pore canals matched with a pilot valve core are arranged in the pilot valve body, a left end cover and a right end cover are respectively arranged at two ends of the pilot valve body, a left feedback cavity is arranged in the left end cover, a right feedback cavity is arranged in the right end cover, elastic elements are arranged in the left feedback cavity and the right feedback cavity, and two ends of the pilot valve core are propped between the two elastic elements.
Further, a left air inlet and a right air inlet are arranged in the pilot valve pore canal at intervals, a left blocking ring and a right blocking ring which are in sealing fit with the pilot valve pore canal are arranged on the pilot valve core, the air inlet is positioned between the left air inlet and the right air inlet, when the size of the throttle mouth of the left throttle hole is consistent with that of the throttle mouth of the right throttle hole, the left air inlet is positioned between the left blocking ring and the air inlet, and the right blocking ring is positioned between the air inlet and the right air inlet; when the throttle orifice of the left throttle orifice is gradually smaller than that of the right throttle orifice, the left blocking ring is positioned between the left air inlet and the air inlet, and the right air inlet is positioned between the right blocking ring and the air inlet.
Further, the pilot valve core pore canal comprises a left pore canal and a right pore canal, the left pore canal comprises a left radial pore canal and a left axial pore canal which are communicated with each other, the right pore canal comprises a right radial pore canal and a right axial pore canal which are communicated with each other, ports of the left radial pore canal and the right radial pore canal are positioned between a left blocking ring and a right blocking ring, the ports of the left axial pore canal are communicated with a left feedback cavity, and the ports of the right axial pore canal are communicated with a right feedback cavity.
Further, the air valve chamber body is provided with the mounting groove, the pilot valve body and the pilot valve core are both arranged in the mounting groove, and the exhaust hole is positioned at the bottom of the mounting groove and is communicated with the mounting groove, so that the air valve chamber is convenient to assemble and position even if machining is facilitated.
An air-operated diaphragm pump comprising said air-operated diaphragm pump air valve chamber.
Further, the left diaphragm and the right diaphragm comprise an inner diaphragm and an outer diaphragm, and the inner diaphragms of the left diaphragm and the right diaphragm are connected with the outer diaphragm through an outer clamping plate and an inner clamping plate.
Further, both ends of the connecting rod shaft are respectively connected with the left diaphragm and the right diaphragm through screws or bolts, and the screws or bolts sequentially penetrate through the outer clamping plate, the outer diaphragm, the inner diaphragm and the inner clamping plate to be connected with the end part of the connecting rod shaft.
Further, the left air chamber cavity comprises a left upright post and a left side part of the air valve chamber body which are in sealing connection, the right air chamber cavity comprises a right upright post and a right side part of the air valve chamber body which are in sealing connection, a lower port of the left upright post is communicated with a lower port of the right upright post through a feeding pipe, and an upper port of the left upright post is communicated with an upper port of the right upright post through a discharging pipe.
The air inlet and outlet modes of the air valve chamber reduce the structural complexity of the air valve chamber and have low processing cost. The nozzle baffle plate type ventilation mode of the pneumatic diaphragm pump improves the reversing working reliability of the main valve core and the pilot valve core, reduces the possibility of blockage failure of the air path due to unstable air pressure, and enhances the flow stability in the diaphragm oil absorption and discharge process. The diameter of the conical surface of the baffle plate is adjustable and replaceable, so that the flow adjustability of the pneumatic diaphragm pump under the input of constant pressure gas is improved. The separation connection mode of the pilot valve and the air valve chamber ensures that the pneumatic diaphragm pump is convenient to assemble, disassemble and maintain. The pilot valve is in the centering form of springs at two sides, so that the rigid impact of the pilot valve is reduced. Compared with the prior art, the air valve chamber adopts the structure of the pilot valve and the baffle to be matched with each other, and the baffle is linked with the left diaphragm in the left air chamber cavity and the right diaphragm in the right air chamber cavity through the main valve core, so that the negative feedback automatic circulation of the pilot valve-diaphragm-main valve core-baffle-pilot valve is formed, and the problems of complex structure, high maintenance difficulty, unreliable reversing and large flow fluctuation of the air valve chamber in the prior art are solved. The utility model has the advantages of simple structure, low processing and maintenance cost, stable and reliable operation, adjustable constant pressure flow and the like.
Drawings
In order to more clearly illustrate the embodiments of the present utility model, the drawings that are required for the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a front view of an air operated diaphragm pump of the present utility model;
FIG. 2 is a schematic perspective view of the air valve chamber of FIG. 1;
FIG. 3 is a cross-sectional view I of FIG. 1;
FIG. 4 is a second cross-sectional view of FIG. 1;
FIG. 5 is an enlarged view of the pilot valve body of FIG. 4;
FIG. 6 is an enlarged view of the pilot spool of FIG. 4;
reference numerals in the drawings:
a gas valve chamber body 1; a main spool 2; a left upright 3; an outer clamping plate 4; an outer membrane 5; an inner diaphragm 6; a left end cover 7; a pilot valve body 8; a pilot spool 9; an elastic member 10; a fourth stopper 11; an inner clamping plate 12; a baffle 13; a screw 14; a link shaft 15; a feed tube 16; a discharge pipe 17; a left intake aperture 18; an air inlet hole 19; a right intake hole 20; a left axial duct 21; a left radial port 22; a right radial duct 23; a right axial bore 24; an L-shaped gas control outlet 25; a left air chamber hole 26 of the air valve chamber; a left communication hole 27 of the air valve chamber; a right communication hole 28 of the air valve chamber; a right air chamber hole 29 of the air valve chamber; a third stopper 30; a right orifice 31; an exhaust hole 32; the first groove 33 of the left main valve duct; a second inner groove 34 of the left main valve duct; a second inner groove 35 of the right main valve duct; a first right main valve orifice inner groove 36; a first stopper 37; a second stopper 38; a left air chamber 39; a right air chamber 40; a left choke 41; a right choke 42; right column 43.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model.
The pneumatic diaphragm pump air valve chamber comprises an air valve chamber body 1, and a connecting rod shaft 15, of which two ends are respectively connected with a left diaphragm in a left air chamber cavity 39 and a right diaphragm in a right air chamber cavity 40, is arranged through the air valve chamber body 1, and can drive the connecting rod shaft 15 to stretch back and forth when the air in the left air chamber cavity 39 and the air in the right air chamber cavity 40 change alternately, as shown in fig. 3 and 4. A main valve duct is arranged through the air valve chamber body 1, and a main valve core 2 is arranged in the main valve duct in a sliding way. When the connecting rod shaft 15 reciprocates, the main valve core 2 is pushed by the left diaphragm and the right diaphragm to reciprocate in the main valve duct.
The main valve pore canal is connected with an exhaust hole 32, when the main valve core 2 reciprocates in the main valve pore canal, the main valve core 2 can alternately open the blocking between the left air chamber cavity 39 and the exhaust hole 32 and the blocking between the right air chamber cavity 40 and the exhaust hole 32, so that the left air chamber cavity 39 and the right air chamber cavity 40 alternately intake and exhaust.
The exhaust hole 32 is internally provided with a baffle plate 13 connected with the main valve core 2, a cavity at the left side of the baffle plate 13 is communicated with a left feedback cavity of the pilot valve through a left throttle hole, a cavity at the right side of the baffle plate 13 is communicated with a right feedback cavity of the pilot valve through a right throttle hole 31, and an air inlet 19 of the pilot valve is communicated with the left throttle hole and the right throttle hole 31 through a pilot valve core pore canal arranged on the pilot valve core 9. When the main valve core 2 reciprocates in the main valve duct, the baffle 13 is driven to reciprocate in the left-right direction, so that the flow rates of the right throttle hole 31 and the left throttle hole are changed, the pressure is fed back to the pilot valve, and the pilot valve core 9 of the pilot valve further changes the pilot passage.
When the air inlet 19 on the pilot valve is communicated with the left air chamber 39 and is separated from the right air chamber 40, the left air chamber 39 starts to be inflated, the position of the left diaphragm is changed, the main valve core 2 is pushed to move leftwards when the position of the diaphragm is changed, after the position of the main valve core 2 is changed, the right air chamber 40 is communicated with the air outlet 32, the main valve core 2 drives the baffle 13 to deflect leftwards, the left throttle orifice 41 between the left throttle orifice and the baffle 13 is gradually reduced, and the pressure in the left throttle orifice is increased; the right throttle orifice 42 between the right throttle orifice 31 and the baffle 13 gradually increases, the pressure in the right throttle orifice 31 increases, when the left throttle orifice 41 is smaller than the right throttle orifice 42, the balance between the left feedback chamber and the right feedback chamber is lost, the left feedback chamber pushes the pilot valve core 9 to move rightwards, the air inlet 19 is separated from the left air chamber 39 and communicated with the right air chamber 40, the right air chamber 40 starts to be inflated, the position of the right diaphragm changes, the diaphragm position changes to push the main valve core 2 to move rightwards, after the position of the main valve core 2 changes, the left air chamber 39 is communicated with the exhaust hole 32, the main valve core 2 drives the baffle 13 to deflect rightwards, the left throttle orifice 41 is gradually larger than the right throttle orifice 42, the right feedback chamber pushes the pilot valve core 9 to enable the air inlet 19 to be communicated with the left air chamber 39 and separated from the right air chamber 40, and the circulation is repeated.
The air valve chamber adopts the mutual matching of the pilot valve and the baffle plate structure, the baffle plate 13 is linked with the left diaphragm in the left air chamber cavity 39 and the right diaphragm in the right air chamber cavity 40 through the main valve core 2, so that the negative feedback automatic circulation of the pilot valve-diaphragm-main valve core-baffle plate-pilot valve is formed, the air valve chamber body 1 has a simple structure, the reversing action is closely related with the diaphragm state, the action is not delayed, and the flow is not fluctuated.
As a preferred embodiment of the air chamber, as shown in fig. 2, an air chamber left communication hole 27 and an air chamber right communication hole 28 are formed in the air chamber body 1 so as to be symmetrical to each other, and the air of the air inlet hole 19 is reciprocally communicated with the air chamber left communication hole 27 and the air chamber right communication hole 28 by the reciprocal movement of the pilot valve body 9, and the air is introduced into the left air chamber 39 through the air chamber left communication hole 27, and the air is introduced into the right air chamber 40 through the air chamber right communication hole 28.
As a preferable implementation mode of the air valve chamber, the main valve core 2 is provided with a left convex ring and a right convex ring which are in sealing fit with the main valve pore canal, and a left main valve pore canal inner groove and a right main valve pore canal inner groove are arranged at intervals along the length direction of the main valve pore canal. The diameter of the inner groove of the left main valve pore canal is larger than that of the left convex ring, and the diameter of the inner groove of the right main valve pore canal is larger than that of the right convex ring. When the left diaphragm pushes the main valve core 2 to enable the left air chamber cavity 39 to be communicated with the exhaust hole 32, air in the left air chamber cavity 39 is communicated with the exhaust hole 32 through an inner groove of a left main valve channel; when the right diaphragm pushes the main valve core 2 to enable the right air chamber cavity 40 to be communicated with the exhaust hole 32, air in the right air chamber cavity 40 is communicated with the exhaust hole 32 through the inner groove of the right main valve channel. By providing the left main valve inner duct and the right main valve inner duct, the stability and reliability of ventilation of the left air chamber 39 and the right air chamber 40 can be sufficiently ensured.
As a preferred embodiment of the air valve chamber, the two left main valve pore canal inner grooves and the two right main valve pore canal inner grooves are respectively arranged, and the left main valve pore canal inner groove comprises a left main valve pore canal inner groove one 33 and a left main valve pore canal inner groove two 34; the right main valve orifice inner groove comprises a right main valve orifice inner groove II 35 and a right main valve orifice inner groove I36. The first left main valve pore canal inner groove 33 and the second left main valve pore canal inner groove 34 are arranged at intervals, and the first left main valve pore canal inner groove 33 and the second left main valve pore canal inner groove 34 are communicated through a left communication hole; the second inner groove 35 of the right main valve pore canal and the first inner groove 36 of the right main valve pore canal are arranged at intervals, and the second inner groove 35 of the right main valve pore canal and the first inner groove 36 of the right main valve pore canal are communicated through a right communication hole.
The left main valve pore canal inner groove and the right main valve pore canal inner groove are arranged in pairs, so that the ventilation stability and reliability of the left air chamber 39 and the right air chamber 40 can be further ensured. When the left convex ring is located between the first left main valve inner groove 33 and the second left main valve inner groove 34, the gas in the left air chamber 39 can not only be indirectly communicated with the exhaust hole 32 through the first left main valve inner groove 33, but also be directly exhausted from the exhaust hole 32 through the right left main valve inner groove.
When the right convex ring is located between the second inner groove 35 of the right main valve duct and the first inner groove 36 of the right main valve duct, the gas in the right air chamber 40 can not only be indirectly communicated with the exhaust hole 32 through the first inner groove 36 of the right main valve duct, but also be directly exhausted from the exhaust hole 32 through the right main valve duct on the left side.
Further, the right convex ring and the right convex ring have the same structure and size and are bilaterally symmetrical with respect to the middle part of the main valve core 2, and the left main valve pore canal inner groove and the right main valve pore canal inner groove have the same structure and storage and are bilaterally symmetrical with respect to the central position of the air valve chamber body 1.
As a preferred embodiment of the air valve chamber, the outer ports of the left communication hole and the right communication hole are both communicated to the outside of the air valve chamber body 1. The left communication hole and the right communication hole are arranged in the structure, so that the structure is simple, the mechanical processing is convenient, and the corresponding communication holes can be directly processed at the outer port of the left communication hole and the outer port of the right communication hole. The outer port of the left communication hole is provided with a first blocking head 37, and the outer port of the right communication hole is provided with a second blocking head 38.
As a preferable embodiment of the air valve chamber, the section of the baffle plate 13 is of a wedge-shaped structure which is symmetrical left and right, the large-diameter end of the baffle plate 13 is arranged in the air exhaust hole, and the tip end of the baffle plate 13 is connected with the main valve core 2. The section of the baffle 13 is of a bilaterally symmetrical wedge-shaped structure, so that the elasticity of the baffle 13 can be increased, the assembly can be facilitated, and the sizes of the left throttling orifice and the right throttling orifice in an initial state are kept to be highly uniform.
As a preferred embodiment of the air valve chamber, the air vent hole 32 and the main valve duct are crossed in a cross shape, the large-diameter end of the baffle 13 is in threaded connection with the air vent hole 32, and the tip end of the baffle 13 is in plug-in fit with the main valve core 2. The threaded connection structure is simple to adjust, the pretightening force between the baffle 13 and the main valve core 2 can be adjusted through adjusting the threaded connection position, the initial sizes of the left throttling orifice and the right throttling orifice can be adjusted, and the constant pressure flow is adjustable.
As a preferred embodiment of the air valve chamber, the left orifice includes a left vertical hole and a left lateral hole, the right orifice 31 includes a right vertical hole and a right lateral hole, the left lateral hole is coaxially disposed with the right lateral hole and is bilaterally symmetrical with respect to the air vent hole 32, and the left lateral hole and the right lateral hole penetrate the air valve chamber body 1 through the air vent hole 32. The length and the capacity of the left throttle hole and the right throttle hole 31 can be ensured to be consistent, the response of the two feedback stages of the left air chamber cavity 39 and the right air chamber cavity 40 is consistent, the flow is fully reduced, and the mechanical processing is convenient. The outer port of the left transverse hole is provided with a third blocking head 30 and the outer port of the right transverse hole is provided with a fourth blocking head 11. The left and right vertical holes are bilaterally symmetrical about the exhaust hole 32, the left vertical hole is communicated with the left feedback cavity of the pilot valve, and the right vertical hole is communicated with the right feedback cavity of the pilot valve.
As a preferred embodiment of the air valve chamber, the left plug 30 is provided with an axial and circumferential left small hole, the right plug 11 is provided with an axial and circumferential right small hole, the left small hole is communicated with the left air chamber 39, and the right small hole is communicated with the right air chamber 40. Preferably, the left small hole communicates with the left air chamber 39 through the air valve chamber left communication hole 27, and the right small hole communicates with the right air chamber 40 through the air valve chamber right communication hole 28.
As a preferred embodiment of the air valve chamber, the pilot valve comprises a pilot valve body 8, a pilot valve duct matched with a pilot valve core 9 is arranged in the pilot valve body 8, and a left end cover 7 and a right end cover are respectively arranged at two ends of the pilot valve body 8. The left feedback cavity is positioned in the left end cover 7, the right feedback cavity is positioned in the right end cover, elastic elements 10 are arranged in the left feedback cavity and the right feedback cavity, and two ends of the pilot valve core 9 are propped between the two elastic elements 10.
Specifically, spring grooves are formed in the left end cover 7 and the right end cover, the elastic element 10 is a spring arranged in the spring grooves, and the left end cover 7 and the right end cover are both fixed with the pilot valve body 8 through bolts. The pilot valve end cover is provided with an end cover air control hole which is communicated with the end cover inner groove. The lower end of the pilot valve body 8 is symmetrically provided with an L-shaped air control outlet 25 which is connected with an end cover air control hole.
As a preferred embodiment of the air valve chamber, as shown in fig. 5, a left air inlet 18 and a right air inlet 20 are arranged in the pilot valve duct at intervals, a left blocking ring and a right blocking ring which are in sealing fit with the pilot valve duct are arranged on the pilot valve core 9, and the air inlet 19 is positioned between the left air inlet 18 and the right air inlet 20. When the size of the throttle opening of the left throttle hole is consistent with that of the throttle opening of the right throttle hole 31, the left air inlet 18 is positioned between the left blocking ring and the air inlet 19, and the right blocking ring is positioned between the air inlet 19 and the right air inlet 20; when the orifice of the left orifice is gradually smaller than the orifice of the right orifice 31, the left blocking ring is positioned between the left air inlet 18 and the air inlet 19, and the right air inlet 20 is positioned between the right blocking ring and the air inlet 19.
That is, the pilot valve core 9 is centered under the action of springs at two ends, the middle part of the upper end of the pilot valve body 8 is provided with an air inlet 19, the pilot valve body 8 is provided with a left air inlet 18 and a right air inlet 20, and the left air inlet 18 and the right air inlet 20 are symmetrically arranged. The pilot valve core 9 in the initial state covers the right air inlet hole 20, and the air inlet 19 is communicated with the left air inlet hole 18.
As a preferred embodiment of the air valve chamber, as shown in fig. 6, the pilot valve core hole comprises two L-shaped oil control hole channels, namely a left hole channel and a right hole channel, the left hole channel comprises a left radial hole channel 22 and a left axial hole channel 21 which are communicated with each other, the right hole channel comprises a right radial hole channel 23 and a right axial hole channel 24 which are communicated with each other, ports of the left radial hole channel 22 and the right radial hole channel 23 are positioned between a left blocking ring and a right blocking ring, the port of the left axial hole channel 21 is communicated with a left feedback cavity, and the port of the right axial hole channel 24 is communicated with a right feedback cavity.
Further, the air valve chamber body 1 is provided with a mounting groove, the pilot valve body 8 and the pilot valve core 9 are both arranged in the mounting groove, and the air exhaust hole 32 is positioned at the bottom of the mounting groove and is communicated with the mounting groove, so that the air valve chamber is convenient for assembly and positioning even in mechanical processing. Preferably, the axis of the exhaust hole 32 passes through the middle part of the pilot valve body 8.
A pneumatic diaphragm pump comprising a pneumatic diaphragm pump air valve chamber according to any one of the preceding claims.
As a preferred embodiment of the pneumatic diaphragm pump, as shown in figure 1, the left diaphragm and the right diaphragm comprise an inner diaphragm 6 and an outer diaphragm 5, the inner diaphragm 6 and the outer diaphragm 5 of the left diaphragm and the right diaphragm are connected through an outer clamping plate 4 and an inner clamping plate 12, and the inner clamping plate 12 is in propping fit with the end part of the main valve core 2 in the process of reciprocating movement of the diaphragms.
As a preferred embodiment of the pneumatic diaphragm pump, both ends of the connecting rod shaft 15 are respectively connected with the left diaphragm and the right diaphragm through screws 14 or bolts, and the screws 14 or bolts sequentially pass through the outer clamping plate 4, the outer diaphragm 5, the inner diaphragm 6 and the inner clamping plate 12 to be connected with the ends of the connecting rod shaft 15.
As a preferred embodiment of the pneumatic diaphragm pump, the left air chamber 39 includes a left upright post 3 and a left side portion of the air valve chamber body 1 which are in sealing connection, the right air chamber 40 includes a right upright post 43 and a right side portion of the air valve chamber body 1 which are in sealing connection, a lower port of the left upright post 3 is communicated with a lower port of the right upright post 43 through a feeding pipe 16, and an upper port of the left upright post 3 is communicated with an upper port of the right upright post 43 through a discharging pipe 17.
The present utility model is not limited to the conventional technical means known to those skilled in the art.
The foregoing has shown and described the basic principles, main features and advantages of the present utility model. The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (17)
1. The utility model provides a pneumatic diaphragm pump pneumatic valve room, includes pneumatic valve room body (1), passes pneumatic valve room body (1) and is provided with both ends respectively with left diaphragm in left air chamber (39), right diaphragm in right air chamber (40) link axle (15), its characterized in that: the air valve chamber body (1) is provided with a main valve channel, a main valve core (2) is slidably arranged in the main valve channel, an exhaust hole (32) is connected to the main valve channel, a baffle plate (13) connected with the main valve core (2) is arranged in the exhaust hole (32), a cavity on the left side of the baffle plate (13) is communicated with a left feedback cavity of a pilot valve through a left orifice, a cavity on the right side of the baffle plate (13) is communicated with a right feedback cavity of the pilot valve through a right orifice (31), and an air inlet hole (19) of the pilot valve is communicated with the left orifice and the right orifice (31) through a pilot valve core channel arranged on a pilot valve core (9).
2. A pneumatic diaphragm pump gas valve chamber according to claim 1, wherein: when an air inlet hole (19) on the pilot valve is communicated with a left air chamber cavity (39), the position change of a right diaphragm pushes the main valve core (2) to enable the right air chamber cavity (40) to be communicated with the exhaust hole (32) and drive the baffle plate (13) to deflect leftwards, then a left throttle opening is gradually smaller than a right throttle opening, the left feedback cavity pushes the pilot valve core (9) to enable the air inlet hole (19) to be communicated with the right air chamber cavity (40), the left diaphragm pushes the main valve core (2) to enable the left air chamber cavity (39) to be communicated with the exhaust hole (32) and drive the baffle plate (13) to deflect rightwards, then the throttle opening on the left side is gradually larger than the throttle opening on the right side, and the right feedback cavity pushes the pilot valve core (9) to enable the air inlet hole (19) to be communicated with the left air chamber cavity (39).
3. A pneumatic diaphragm pump air valve chamber according to claim 2, wherein: the main valve core (2) is provided with a left convex ring and a right convex ring which are in sealing fit with a main valve pore canal, a left main valve pore canal inner groove and a right main valve pore canal inner groove are arranged at intervals in the length direction of the main valve pore canal, the diameter of the left main valve pore canal inner groove is larger than that of the left convex ring, the diameter of the right main valve pore canal inner groove is larger than that of the right convex ring, and when the left diaphragm pushes the main valve core (2) to enable a left air chamber cavity (39) to be communicated with an exhaust hole (32), air in the left air chamber cavity (39) is communicated with the exhaust hole (32) through the left main valve pore canal inner groove; when the right diaphragm pushes the main valve core (2) to enable the right air chamber cavity (40) to be communicated with the exhaust hole (32), air in the right air chamber cavity (40) is communicated with the exhaust hole (32) through an inner groove of a right main valve channel.
4. A pneumatic diaphragm pump air valve chamber according to claim 3, wherein: the two inner grooves of the left main valve pore canal and the two inner grooves of the right main valve pore canal are arranged at intervals and are communicated through the left communication hole, and the two inner grooves of the right main valve pore canal are arranged at intervals and are communicated through the right communication hole.
5. A pneumatic diaphragm pump air valve chamber according to claim 4, wherein: the outer port of the left communication hole and the outer port of the right communication hole are both communicated to the outside of the air valve chamber body (1), the outer port of the left communication hole is provided with a first blocking head (37), and the outer port of the right communication hole is provided with a second blocking head (38).
6. A pneumatic diaphragm pump air valve chamber according to any one of claims 1-5, wherein: the section of the baffle plate (13) is of a wedge-shaped structure which is bilaterally symmetrical, the large-diameter end of the baffle plate (13) is arranged in the exhaust hole, and the tip end of the baffle plate (13) is connected with the main valve core (2).
7. The pneumatic diaphragm pump air valve chamber of claim 6, wherein: the exhaust hole (32) and the main valve pore canal are crossed, the large-diameter end of the baffle plate (13) is in threaded connection with the exhaust hole (32), and the tip of the baffle plate (13) is in plug-in fit with the main valve core (2).
8. A pneumatic diaphragm pump air valve chamber according to any one of claims 1-5, 7, wherein: the left orifice comprises a left vertical hole and a left transverse hole, the right orifice (31) comprises a right vertical hole and a right transverse hole, the left transverse hole and the right transverse hole are coaxially arranged and are bilaterally symmetrical with each other about an exhaust hole (32), the left transverse hole and the right transverse hole penetrate through the exhaust hole (32) of the air valve chamber body (1), a third blocking head (30) is arranged at an outer port of the left transverse hole, a fourth blocking head (11) is arranged at an outer port of the right transverse hole, the left vertical hole is communicated with a left feedback cavity of the pilot valve, and the right vertical hole is communicated with a right feedback cavity of the pilot valve.
9. A pneumatic diaphragm pump gas valve chamber according to claim 8, wherein: the third blocking head (30) is provided with an axial and circumferential left small hole, the fourth blocking head (11) is provided with an axial and circumferential right small hole, the left small hole is communicated with the left air chamber cavity (39), and the right small hole is communicated with the right air chamber cavity (40).
10. A pneumatic diaphragm pump air valve chamber according to any one of claims 1-5, 7, 9, wherein: the pilot valve comprises a pilot valve body (8), pilot valve pore canals matched with a pilot valve core (9) are arranged in the pilot valve body (8), a left end cover (7) and a right end cover are respectively arranged at two ends of the pilot valve body (8), a left feedback cavity is arranged in the left end cover (7), a right feedback cavity is arranged in the right end cover, elastic elements (10) are respectively arranged in the left feedback cavity and the right feedback cavity, and two ends of the pilot valve core (9) are propped between the two elastic elements (10).
11. The pneumatic diaphragm pump air valve chamber of claim 10, wherein: a left air inlet hole (18) and a right air inlet hole (20) are arranged in the pilot valve pore canal at intervals, a left blocking ring and a right blocking ring which are in sealing fit with the pilot valve pore canal are arranged on the pilot valve core (9), the air inlet hole (19) is positioned between the left air inlet hole (18) and the right air inlet hole (20), when the size of a throttling mouth of the left throttling hole is consistent with that of a throttling mouth of the right throttling hole (31), the left air inlet hole (18) is positioned between the left blocking ring and the air inlet hole (19), and the right blocking ring is positioned between the air inlet hole (19) and the right air inlet hole (20); when the throttle orifice of the left throttle orifice is gradually smaller than that of the right throttle orifice (31), the left blocking ring is positioned between the left air inlet hole (18) and the air inlet hole (19), and the right air inlet hole (20) is positioned between the right blocking ring and the air inlet hole (19).
12. The pneumatic diaphragm pump air valve chamber of claim 11, wherein: the pilot valve core pore canal comprises a left pore canal and a right pore canal, the left pore canal comprises a left radial pore canal (22) and a left axial pore canal (21) which are communicated with each other, the right pore canal comprises a right radial pore canal (23) and a right axial pore canal (24) which are communicated with each other, ports of the left radial pore canal (22) and the right radial pore canal (23) are positioned between a left blocking ring and a right blocking ring, ports of the left axial pore canal (21) are communicated with a left feedback cavity, and ports of the right axial pore canal (24) are communicated with a right feedback cavity.
13. A pneumatic diaphragm pump air valve chamber according to claim 11 or 12, wherein: the air valve is characterized in that an installation groove is formed in the air valve chamber body (1), the pilot valve body (8) and the pilot valve core (9) are arranged in the installation groove, and the air exhaust hole (32) is located at the bottom of the installation groove and communicated with the installation groove.
14. A pneumatic diaphragm pump, characterized by: a valve housing comprising the pneumatic diaphragm pump of any one of claims 1-13.
15. The pneumatic diaphragm pump of claim 14, wherein: the left diaphragm and the right diaphragm comprise an inner diaphragm (6) and an outer diaphragm (5), and the inner diaphragms (6) and the outer diaphragms (5) of the left diaphragm and the right diaphragm are connected through an outer clamping plate (4) and an inner clamping plate (12).
16. A pneumatic diaphragm pump according to claim 15, wherein: both ends of the connecting rod shaft (15) are respectively connected with the left diaphragm and the right diaphragm through screws (14) or bolts, and the screws (14) or bolts sequentially penetrate through the outer clamping plate (4), the outer diaphragm (5), the inner diaphragm (6) and the inner clamping plate (12) to be connected with the end part of the connecting rod shaft (15).
17. A pneumatic diaphragm pump according to claim 16, wherein: the left air chamber cavity (39) comprises a left upright post (3) and a left side part of the air valve chamber body (1) which are in sealing connection, the right air chamber cavity (40) comprises a right upright post (43) and a right side part of the air valve chamber body (1) which are in sealing connection, a lower port of the left upright post (3) is communicated with a lower port of the right upright post (43) through a feeding pipe (16), and an upper port of the left upright post (3) is communicated with an upper port of the right upright post (43) through a discharging pipe (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211014241.2A CN115234483B (en) | 2022-08-23 | 2022-08-23 | Pneumatic diaphragm pump gas valve chamber and pneumatic diaphragm pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211014241.2A CN115234483B (en) | 2022-08-23 | 2022-08-23 | Pneumatic diaphragm pump gas valve chamber and pneumatic diaphragm pump |
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| Publication Number | Publication Date |
|---|---|
| CN115234483A CN115234483A (en) | 2022-10-25 |
| CN115234483B true CN115234483B (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211014241.2A Active CN115234483B (en) | 2022-08-23 | 2022-08-23 | Pneumatic diaphragm pump gas valve chamber and pneumatic diaphragm pump |
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| CN (1) | CN115234483B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3940629A1 (en) * | 1989-12-08 | 1991-06-13 | Tomas Sirek | Compressed air membrane or piston pump - uses integrated pressure reduction valve |
| US5551847A (en) * | 1995-04-24 | 1996-09-03 | Ingersoll-Rand Company | Lost motion pilot valve for diaphragm pump |
| CN103925200A (en) * | 2014-03-21 | 2014-07-16 | 上海如迪流体输送设备有限公司 | Pneumatic diaphragm pump |
| CN105317666A (en) * | 2014-07-28 | 2016-02-10 | 深圳市森迪源气动设备制造有限公司 | Pneumatic diaphragm pump |
| CN206917842U (en) * | 2017-05-18 | 2018-01-23 | 青岛诺德安泵业有限公司 | A kind of pilot valve and Pneumatic double diaphragm pump applied on Pneumatic double diaphragm pump |
| CN107701407A (en) * | 2017-10-20 | 2018-02-16 | 项达章 | A kind of Pneumatic type double-diaphragm pump |
| CN111720293A (en) * | 2020-07-28 | 2020-09-29 | 星宇电子(宁波)有限公司 | Energy-saving internal control type pneumatic diaphragm pump |
-
2022
- 2022-08-23 CN CN202211014241.2A patent/CN115234483B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3940629A1 (en) * | 1989-12-08 | 1991-06-13 | Tomas Sirek | Compressed air membrane or piston pump - uses integrated pressure reduction valve |
| US5551847A (en) * | 1995-04-24 | 1996-09-03 | Ingersoll-Rand Company | Lost motion pilot valve for diaphragm pump |
| CN103925200A (en) * | 2014-03-21 | 2014-07-16 | 上海如迪流体输送设备有限公司 | Pneumatic diaphragm pump |
| CN105317666A (en) * | 2014-07-28 | 2016-02-10 | 深圳市森迪源气动设备制造有限公司 | Pneumatic diaphragm pump |
| CN206917842U (en) * | 2017-05-18 | 2018-01-23 | 青岛诺德安泵业有限公司 | A kind of pilot valve and Pneumatic double diaphragm pump applied on Pneumatic double diaphragm pump |
| CN107701407A (en) * | 2017-10-20 | 2018-02-16 | 项达章 | A kind of Pneumatic type double-diaphragm pump |
| CN111720293A (en) * | 2020-07-28 | 2020-09-29 | 星宇电子(宁波)有限公司 | Energy-saving internal control type pneumatic diaphragm pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115234483A (en) | 2022-10-25 |
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