CN115234483A - Pneumatic diaphragm pump air valve chamber and pneumatic diaphragm pump - Google Patents
Pneumatic diaphragm pump air valve chamber and pneumatic diaphragm pump Download PDFInfo
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- CN115234483A CN115234483A CN202211014241.2A CN202211014241A CN115234483A CN 115234483 A CN115234483 A CN 115234483A CN 202211014241 A CN202211014241 A CN 202211014241A CN 115234483 A CN115234483 A CN 115234483A
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- 239000011148 porous material Substances 0.000 claims abstract description 93
- 230000000903 blocking effect Effects 0.000 claims description 31
- 238000007789 sealing Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 4
- 238000004891 communication Methods 0.000 description 18
- 238000012545 processing Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 5
- 238000003754 machining 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
- 230000002146 bilateral effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000003993 interaction 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
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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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
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention 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 penetrate through an air valve chamber body, an exhaust hole is connected with a main valve pore passage, a baffle plate connected with the main valve core is arranged in the exhaust hole, cavities on two sides of the baffle plate are respectively communicated with two feedback cavities of a pilot valve through two throttling holes, an air inlet of the pilot valve is respectively communicated with the two throttling holes through a pilot valve core pore passage arranged on a 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, a throttling port of the left throttling hole is gradually smaller than a throttling port of the right throttling hole, the left feedback cavity pushes the pilot valve core to lead the air inlet to be separated from the left air chamber cavity and communicated with a right air chamber cavity, the diaphragm position change pushes the main valve core to drive the baffle plate to deflect rightwards, a throttling port of the left throttling hole is gradually larger than a throttling port of the right throttling 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 invention relates to the technical field of pneumatic diaphragm pumps, in particular to an air valve chamber of a pneumatic diaphragm pump and the pneumatic diaphragm pump.
Background
The tunnel pollution discharge is an indispensable link in tunnel construction, and the pneumatic diaphragm pump is commonly used at present to carry out tunnel pollution discharge work. The pneumatic diaphragm pump is a novel conveying machine, is suitable for liquid conveying in various complex environments, and can convey granular, high-viscosity, volatile, inflammable and highly toxic liquid.
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 an assisting rod or interaction of a single reversing valve and a connecting rod sliding sleeve, and cavities on two sides alternately expand and contract to finally realize continuous suction and discharge of liquid. The combined use of the double reversing valve and the power-assisted rod makes the structure of the air valve chamber complex, the working stability is poor, the processing difficulty is high, and the cost is high; the form of the reversing valve and the connecting rod sliding sleeve has the advantages that the sliding sleeve is easy to wear, the reversing is unreliable, the flow fluctuation is large, and sometimes the maintenance difficulty is large due to external air supply faults.
The utility model discloses a many exports reposition of redundant personnel pneumatic diaphragm pump as the china utility model patent of granting bulletin day 2020.12.29, the grant bulletin number is CN212250416U, including pneumatic diaphragm pump trunk line, pneumatic diaphragm pump trunk line is back shape frame structure, and the equal diagonal angle distribution of four inside sides of pneumatic diaphragm pump trunk line has spherical check valve, air distribution valve is installed to pneumatic diaphragm pump trunk line middle part top, and is connected with diaphragm chamber below the air distribution valve to diaphragm chamber 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 carries the export, pneumatic diaphragm pump trunk line below point top and side all are connected with the supplementary export of material, and the supplementary export height of material of pneumatic diaphragm pump trunk line side is less than spherical check valve's bottom height.
The technical scheme of the patent is that the diaphragm chamber is driven to swing left and right through the air distribution valve and the pneumatic body, but the technical problems of complex structure of the air valve chamber, high processing difficulty, high processing cost, poor working stability, unreliable reversing, large flow fluctuation and the like still exist. Therefore, it is necessary to design a new type of pneumatic diaphragm pump.
Disclosure of Invention
Aiming at the defects in the background technology, the invention provides an air valve chamber of a pneumatic diaphragm pump and the pneumatic diaphragm pump, and solves 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 of the conventional pneumatic diaphragm pump.
The technical scheme of the application is as follows:
the utility model provides a pneumatic diaphragm pump air valve chamber, including the air valve chamber body, it is provided with the left diaphragm of both ends respectively with the left air chamber intracavity to pass the air valve chamber body, the connecting rod axle that the right diaphragm in the right air chamber intracavity links to each other, it is provided with the main valve pore to run through the air valve chamber body, it is provided with the main valve core to slide in the main valve pore, the main valve pore is connected with the exhaust hole, the downthehole baffle that links to each other with the main valve core that is provided with of exhausting, the left cavity of baffle passes through left orifice and the left feedback chamber intercommunication of pilot valve, the cavity on baffle right side passes through right orifice and the right feedback chamber intercommunication of pilot valve, the inlet port of pilot valve passes through the pilot valve case pore and left orifice and the right orifice intercommunication that set up on the pilot valve case. The air valve chamber adopts the structure that the pilot valve is matched with the baffle plate, 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, negative feedback automatic circulation of the pilot valve-the diaphragm-the main valve core-the baffle plate-the pilot valve is formed, the structure of the air valve chamber body is simple, the reversing action is closely related to the state of the diaphragms, the action is not delayed, and the flow is not fluctuated.
Further, when an 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 changes to push the main valve core to enable the right air chamber cavity to be communicated with the exhaust hole and drive the baffle to deflect leftwards, then the throttling opening of the left throttling opening is gradually smaller than the throttling opening of the right throttling opening, 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 changes to push the main valve core to enable the left air chamber cavity to be communicated with the exhaust hole and drive the baffle to deflect rightwards, then the throttling opening of the left throttling opening is gradually larger than the throttling opening of the right throttling opening, 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.
Furthermore, a left convex ring and a right convex ring which are in sealing fit with a main valve pore passage are arranged on the main valve core, a left main valve pore passage inner groove and a right main valve pore passage inner groove are arranged in the length direction of the main valve pore passage at intervals, the diameter of the left main valve pore passage inner groove is larger than that of the left convex ring, the diameter of the right main valve pore passage 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 cavity to be communicated with the exhaust hole, the gas in the left air chamber cavity is communicated with the exhaust hole through the left main valve pore passage inner groove; when the right diaphragm pushes the main valve core to communicate the right air chamber cavity with the exhaust hole, the air in the right air chamber cavity is communicated with the exhaust hole through the inner groove of the pore passage of the right main valve. Through setting up left main valve pore inside groove and right main valve pore inside groove, can fully guarantee the stability and the reliability of left air chamber, right air chamber taking a breath.
Furthermore, the left main valve pore inner grooves and the right main valve pore inner grooves are respectively provided with two left main valve pore inner grooves which are arranged at intervals and communicated through a left communication hole, and the two right main valve pore inner grooves which are arranged at intervals and communicated through a right communication hole. The left main valve pore inner groove and the right main valve pore inner groove are arranged in pairs, so that the stability and reliability of air exchange 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 inner grooves, the gas in the left gas chamber cavity can be indirectly communicated with the exhaust holes through the leftmost left main valve pore inner groove and can be directly discharged from the exhaust holes through the right left main valve pore inner groove. If the right convex ring is positioned between the two inner grooves of the right main valve pore channel, the gas in the right gas chamber cavity can be indirectly communicated with the exhaust hole through the inner groove of the right main valve pore channel at the rightmost side, and can be directly exhausted from the exhaust hole through the right main valve pore channel at the left side.
Further, the outer port of the left communicating hole and the outer port of the right communicating hole are communicated to the outside of the air valve chamber body, the structure is simple, machining is facilitated, the corresponding communicating holes can be directly machined through the outer port of the left communicating hole and the outer port of the right communicating hole, the outer port of the left communicating hole is provided with a first blocking head, and the outer port of the right communicating hole is provided with a second blocking head.
Furthermore, 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 cross 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 throttling opening and the right throttling opening in the initial state are kept highly uniform.
Furthermore, the exhaust hole and the main valve pore passage are arranged in a cross-shaped cross mode, the large-diameter end of the baffle is in threaded connection with the exhaust hole, and the tip end 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 plate and the main valve core can be adjusted by adjusting the threaded connection position, the initial sizes of the left throttling port and the right throttling port can be adjusted, and constant pressure flow can be adjusted.
Further, left orifice includes left vertical hole and left horizontal hole, and right orifice includes right vertical hole and right horizontal hole, and left horizontal hole and right horizontal hole are coaxial to be set up and about exhaust hole bilateral symmetry, and left horizontal hole and right horizontal hole run through the exhaust hole the air valve room body can guarantee that left orifice is unanimous with length, the capacity of right orifice, makes two feedback stage responses in left air chamber, right air chamber unanimous, fully reduces the flow, the machining of being convenient for again. The outer port of the left transverse hole is provided with a third plugging head, the outer port of the right transverse hole is provided with a fourth plugging 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.
Furthermore, the left plugging head is provided with a left small hole in the axial direction and the circumferential direction, the right plugging head is provided with a right small hole in the axial direction and the circumferential direction, 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.
Furthermore, the pilot valve comprises a pilot valve body, a pilot valve hole channel matched with the pilot valve core is 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, the left feedback cavity is located in the left end cover, the right feedback cavity is located 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 connected between the two elastic elements in a jacking mode.
Furthermore, a left air inlet hole and a right air inlet hole are arranged in the pilot valve pore channel at intervals, a left blocking ring and a right blocking ring which are in sealing fit with the pilot valve pore channel are arranged on the pilot valve core, the air inlet hole is positioned between the left air inlet hole and the right air inlet hole, when the size of the throttling opening of the left throttling hole is consistent with that of the throttling opening of the right throttling hole, the left air inlet hole is positioned between the left blocking ring and the air inlet hole, and the right blocking ring is positioned between the air inlet hole and the right air inlet hole; when the throttle opening of the left throttle opening is gradually smaller than the throttle opening of the right throttle opening, the left blocking ring is positioned between the left air inlet hole and the air inlet hole, and the right air inlet hole is positioned between the right blocking ring and the air inlet hole.
Furthermore, the pilot valve core pore passage comprises a left pore passage and a right pore passage, the left pore passage comprises a left radial pore passage and a left axial pore passage which are communicated with each other, the right pore passage comprises a right radial pore passage and a right axial pore passage which are communicated with each other, ports of the left radial pore passage and the right radial pore passage are both positioned between the left blocking ring and the right blocking ring, the port of the left axial pore passage is communicated with the left feedback cavity, and the port of the right axial pore passage is communicated with the right feedback cavity.
Further, be provided with the mounting groove on the air valve room body, guide valve body and pilot valve core all set up in the mounting groove, the exhaust hole is located the tank bottom of mounting groove and communicates with the mounting groove, even if be convenient for machining, the positioning of being convenient for again.
An air operated diaphragm pump includes the air valve chamber of the air operated diaphragm pump.
Furthermore, the left diaphragm and the right diaphragm both comprise inner diaphragms and outer diaphragms, and the inner diaphragms and the outer diaphragms of the left diaphragm and the right diaphragm are connected through outer clamping plates and inner clamping plates.
Furthermore, two 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 to the end part of the connecting rod shaft.
Further, left side air chamber includes the left side portion of left stand and the air valve chamber body of sealing connection, right side air chamber includes the right side portion of right stand and air valve chamber body of sealing connection, communicates through the inlet pipe between the lower port of left stand and the lower port of right stand, communicates through the discharging pipe between the upper port of left stand and the upper port of right stand.
The air intake and exhaust mode of the air valve chamber reduces the structural complexity of the air valve chamber and has low processing cost. The nozzle baffle type air exchange mode of the pneumatic diaphragm pump improves the reliability of reversing work of the main valve core and the pilot valve core, reduces the possibility of blockage failure of an air path due to unstable air pressure, and enhances the flow stability in the process of oil absorption and oil discharge of the diaphragm. The conical surface diameter of the baffle is adjustable and replaceable, and the flow adjustability of the pneumatic diaphragm pump under the input of constant-pressure gas is improved. The invention has the advantages that the guide valve and the air valve chamber are connected in a separated mode, so that the pneumatic diaphragm pump is convenient to disassemble, assemble and maintain. The pilot valve is in a centering mode of springs on two sides, and the rigid impact of the pilot valve is reduced. Compared with the prior art, the air valve chamber adopts the mutual matching of the pilot valve and the baffle plate structure, 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 to form the negative feedback automatic cycle of the pilot valve-diaphragm-main valve core-baffle plate-pilot valve, thereby solving the problems of complex structure, high maintenance difficulty, unreliable reversing and large flow fluctuation of the air valve chamber in the prior art. The invention has the advantages of simple structure, low processing and maintenance cost, stable and reliable work, adjustable constant pressure flow and the like.
Drawings
In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings may be derived from them by a person skilled in the art without inventive effort.
FIG. 1 is a front view of an air operated diaphragm pump of the present invention;
FIG. 2 is a perspective view of the gas valve chamber of FIG. 1;
FIG. 3 is a first cross-sectional view 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 poppet of FIG. 4;
the reference numbers in the figures:
a valve chamber body 1; a main valve element 2; a left upright column 3; an outer splint 4; an outer diaphragm 5; an inner diaphragm 6; a left end cap 7; a pilot valve body 8; a pilot valve spool 9; an elastic element 10; a fourth plugging head 11; an inner clamping plate 12; a baffle 13; a screw 14; a link shaft 15; a feed pipe 16; a discharge pipe 17; a left intake port 18; an air intake hole 19; a right intake hole 20; a left axial bore 21; a left radial port 22; a right radial port 23; a right axial bore 24; an L-shaped gas control outlet 25; the air valve chamber left air cavity hole 26; the gas valve chamber left communication hole 27; the gas valve chamber right communication hole 28; the air valve chamber right air cavity hole 29; a third stopper head 30; a right orifice 31; an exhaust hole 32; a first inner groove 33 of the left main valve port; a second left main valve port inner groove 34; a second groove 35 in the right main valve port; a first groove 36 in the right main valve hole; a first blocking head 37; a second plugging head 38; a left air chamber cavity 39; a right air chamber cavity 40; a left orifice 41; a right orifice 42; a right upright 43.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
An air valve chamber of a pneumatic diaphragm pump is shown in fig. 3 and 4 and comprises an air valve chamber body 1, a connecting rod shaft 15 is arranged through the air valve chamber body 1, two ends of the connecting rod shaft 15 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, and when gas in the left air chamber cavity 39 and gas in the right air chamber cavity 40 are alternately changed, the connecting rod shaft 15 can be driven to reciprocate. A main valve hole is arranged through the air valve chamber body 1, and a main valve core 2 is arranged in the main valve hole in a sliding mode. 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 pore canal.
The main valve pore passage is connected with an exhaust hole 32, when the main valve core 2 reciprocates in the main valve pore passage, the main valve core 2 can alternately open the plug between the left air chamber cavity 39 and the exhaust hole 32 and the plug 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 air and exhaust air.
A baffle 13 connected with the main valve element 2 is arranged in the exhaust hole 32, a cavity on the left side of the baffle 13 is communicated with a left feedback cavity of the pilot valve through a left orifice, a cavity on the right side of the baffle 13 is communicated with a right feedback cavity of the pilot valve through a right orifice 31, and an air inlet 19 of the pilot valve is communicated with the left orifice and the right orifice 31 through a pilot valve element pore passage arranged on the pilot valve element 9. When the main valve element 2 reciprocates in the main valve pore passage, the baffle 13 is driven to deflect in the left-right direction, so that the flow of the right throttle hole 31 and the left throttle hole is changed, the pressure is fed back to the pilot valve, and the pilot valve element 9 of the pilot valve further changes the pilot passage.
That is, when the air inlet 19 on the pilot valve is communicated with the left air chamber 39 and is isolated from the right air chamber 40, the left air chamber 39 starts to be inflated, the position of the left diaphragm changes, the diaphragm position changes and simultaneously pushes the main valve element 2 to move leftwards, after the position of the main valve element 2 changes, the right air chamber 40 is communicated with the exhaust hole 32, and the main valve element 2 drives the baffle 13 to deflect leftwards, so that the left throttling port 41 between the left throttling hole and the baffle 13 gradually becomes smaller, and the pressure in the left throttling hole rises; and the right throttle orifice 42 between the right throttle orifice 31 and the baffle 13 is gradually enlarged, the pressure in the right throttle orifice 31 is increased, when the left throttle orifice 41 is smaller than the right throttle orifice 42, the balance between the left feedback cavity and the right feedback cavity is lost, the left feedback cavity pushes the pilot valve core 9 to move rightwards, so that the air inlet 19 is separated from the left air chamber cavity 39 and communicated with the right air chamber cavity 40, the right air chamber cavity 40 starts to be inflated, the position of a 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 cavity 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, and the right feedback cavity pushes the pilot valve core 9 to lead the air inlet 19 to be communicated with the left air chamber cavity 39 and separated from the right air chamber cavity 40, and the circulation is repeated.
The air valve chamber adopts the structure that the pilot valve is matched with the baffle plate, 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 element 2 to form the negative feedback automatic cycle of the pilot valve-diaphragm-main valve element-baffle plate-pilot valve, the structure of the air valve chamber body 1 is simple, the reversing action is closely related to the state of the diaphragm, the action is not delayed, and the flow is not fluctuated.
As a preferred embodiment of the air valve chamber, as shown in fig. 2, an air valve chamber left communication hole 27 and an air valve chamber right communication hole 28 are provided in the air valve chamber body 1, which are symmetrical to each other, the gas of the gas inlet hole 19 is respectively communicated with the air valve chamber left communication hole 27 and the air valve chamber right communication hole 28 in a reciprocating manner by the reciprocating motion of the pilot valve spool 9, the gas enters the left air chamber 39 through the air valve chamber left communication hole 27, and the gas enters the right air chamber 40 through the air valve chamber right communication hole 28.
In a preferred embodiment of the air valve chamber, the main valve body 2 is provided with a left convex ring and a right convex ring which are in sealing fit with the main valve port, and a left main valve port inner groove and a right main valve port inner groove are arranged at intervals in the length direction of the main valve port. The diameter of the left main valve pore inner groove is larger than that of the left convex ring, and the diameter of the right main valve pore inner groove 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 39 to be communicated with the exhaust hole 32, the air in the left air chamber 39 is communicated with the exhaust hole 32 through the inner groove of the left main valve pore passage; when the right diaphragm pushes the main valve element 2 to connect the right air chamber 40 with the exhaust hole 32, the air in the right air chamber 40 is connected with the exhaust hole 32 through the right main valve hole internal groove. By providing the left main valve port inner groove and the right main valve port inner groove, the stability and reliability of the air exchange 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, there are two left main valve port inner grooves and two right main valve port inner grooves, and the left main valve port inner grooves include a left main valve port inner groove one 33 and a left main valve port inner groove two 34; the right main valve port inner groove comprises a right main valve port inner groove two 35 and a right main valve port inner groove one 36. The first left main valve pore inner groove 33 and the second left main valve pore inner groove 34 are arranged at intervals, and the first left main valve pore inner groove 33 and the second left main valve pore inner groove 34 are communicated through a left communication hole; the right main valve port inner groove two 35 and the right main valve port inner groove one 36 are arranged at intervals, and the right main valve port inner groove two 35 and the right main valve port inner groove one 36 are communicated through a right communication hole.
The left main valve pore inner groove and the right main valve pore inner groove are arranged in pairs, so that the stability and reliability of air exchange of the left air chamber cavity 39 and the right air chamber cavity 40 can be further ensured. If the left collar is located between the first left main valve port inner groove 33 and the second left main valve port inner groove 34, the gas in the left air chamber 39 can be directly discharged from the gas discharge hole 32 through the right left main valve port inner groove as well as the gas in the left main valve port inner groove 33.
If the right collar is located between the second right main valve port inner groove 35 and the first right main valve port inner groove 36, the gas in the right air chamber 40 can not only be indirectly communicated with the exhaust hole 32 through the first right main valve port inner groove 36, but also can be directly exhausted from the exhaust hole 32 through the left right main valve port.
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 of the main valve body 2, and the left main valve orifice inner groove and the right main valve orifice inner groove have the same structure and storage and are bilaterally symmetrical with respect to the central position of the valve chamber body 1.
As a preferred embodiment of the air valve chamber, 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. Set up left intercommunicating pore, right intercommunicating pore into above-mentioned structure, not only simple structure, the machining of being convenient for moreover can be directly through the outer port of left intercommunicating pore and the outer port department direct processing of right intercommunicating pore corresponding intercommunicating pore. 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.
In a preferred embodiment of the air valve chamber, the cross section of the baffle 13 is a wedge-shaped structure with bilateral symmetry, the large diameter end of the baffle 13 is arranged in the exhaust hole, and the tip end of the baffle 13 is connected with the main valve element 2. The cross 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 opening and the right throttling opening in the initial state are kept highly uniform.
In a preferred embodiment of the air valve chamber, the vent hole 32 and the main valve hole are arranged in a cross shape, the large diameter end of the baffle 13 is in threaded connection with the vent hole 32, and the tip end of the baffle 13 is in inserted fit with the main valve element 2. The threaded connection structure is simple to adjust, the pretightening force between the baffle 13 and the main valve element 2 can be adjusted by adjusting the threaded connection position, the initial sizes of the left throttling port and the right throttling port can be adjusted, and the constant-pressure flow rate can be adjusted.
As a preferred embodiment of the air valve chamber, the left orifice includes a left vertical hole and a left lateral hole, and the right orifice 31 includes a right vertical hole and a right lateral hole, the left lateral hole and the right lateral hole are coaxially disposed and bilaterally symmetric with respect to the discharge hole 32, and the left lateral hole and the right lateral hole penetrate the air valve chamber body 1 through the discharge hole 32. The lengths and the capacities of the left throttle hole and the right throttle hole 31 can be ensured to be consistent, the two feedback stage responses of the left air chamber cavity 39 and the right air chamber cavity 40 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 plugging head 30, and the outer port of the right transverse hole is provided with a fourth plugging head 11. The left vertical hole and the right vertical hole are bilaterally symmetrical about the exhaust hole 32, 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.
As a preferred embodiment of the air valve chamber, the left plugging head 30 is provided with a left axial and circumferential small hole, the right plugging head 11 is provided with a right axial and circumferential 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. Preferably, the left orifice communicates with the left air chamber 39 through the air valve chamber left communication hole 27, and the right orifice 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 includes a pilot valve body 8, a pilot valve hole passage matched with the pilot valve core 9 is provided in the pilot valve body 8, and a left end cover 7 and a right end cover are respectively provided 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 abutted 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 installed in the spring groove, and the left end cover 7 and the right end cover both fix 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 L-shaped gas control outlets 25 which are connected with the end cover gas control holes.
As a preferred embodiment of the air valve chamber, as shown in fig. 5, a left air inlet hole 18 and a right air inlet hole 20 are provided at intervals in the pilot valve hole, a left blocking ring and a right blocking ring that are in sealing fit with the pilot valve hole are provided on the pilot valve core 9, and the air inlet hole 19 is located between the left air inlet hole 18 and the right air inlet hole 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 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 of the left throttle hole is gradually smaller than the throttle of the right throttle hole 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.
Namely, the pilot valve core 9 is centered under the action of the springs at the two ends, the air inlet 19 is arranged in the middle of the upper end of the pilot valve body 8, 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. In the initial state, the pilot valve core 9 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 bore includes two L-shaped oil control bore holes, which are a left bore hole and a right bore hole, respectively, the left bore hole includes a left radial bore hole 22 and a left axial bore hole 21 that are communicated with each other, the right bore hole includes a right radial bore hole 23 and a right axial bore hole 24 that are communicated with each other, ports of the left radial bore hole 22 and the right radial bore hole 23 are both located between the left blocking ring and the right blocking ring, a port of the left axial bore hole 21 is communicated with the left feedback chamber, and a port of the right axial bore hole 24 is communicated with the right feedback chamber.
Further, be provided with the mounting groove on the air valve room body 1, pilot valve body 8 and pilot valve core 9 all set up in the mounting groove, exhaust hole 32 is located the tank bottom of mounting groove and communicates with the mounting groove, even if be convenient for machining, the positioning of being convenient for again. Preferably, the axis of the exhaust hole 32 passes through the middle portion of the pilot valve body 8.
An air operated diaphragm pump comprising an air valve chamber of an air operated diaphragm pump as claimed in any one of the preceding claims.
As a preferred embodiment of the pneumatic diaphragm pump, as shown in fig. 1, the left diaphragm and the right diaphragm each include 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 abutting fit with the end of the main valve element 2 during the reciprocating motion 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 penetrate through the outer clamping plate 4, the outer diaphragm 5, the inner diaphragm 6 and the inner clamping plate 12 to be connected to the end of the connecting rod shaft 15.
As a preferred embodiment of the air operated diaphragm pump, the left air chamber 39 includes a left upright column 3 and a left side portion of the air valve chamber body 1 which are connected in a sealing manner, the right air chamber 40 includes a right upright column 43 and a right side portion of the air valve chamber body 1 which are connected in a sealing manner, a lower port of the left upright column 3 is communicated with a lower port of the right upright column 43 through the feeding pipe 16, and an upper port of the left upright column 3 is communicated with an upper port of the right upright column 43 through the discharging pipe 17.
The invention is not described in detail in all conventional technical means known to a person skilled in the art.
The foregoing has shown and described the principles, broad features, and advantageous effects of the present invention. The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (17)
1. The utility model provides a pneumatic diaphragm pump air valve room, includes air valve room body (1), passes air valve room body (1) and is provided with connecting rod axle (15) that both ends link to each other with left diaphragm in left air chamber (39), the right diaphragm in the right air chamber (40) respectively, its characterized in that: a main valve hole channel is formed in the through air valve chamber body (1), a main valve core (2) is arranged in the main valve hole channel in a sliding mode, an exhaust hole (32) is connected to the main valve hole channel, a baffle (13) connected with the main valve core (2) is arranged in the exhaust hole (32), a cavity on the left side of the baffle (13) is communicated with a left feedback cavity of the pilot valve through a left throttling hole, a cavity on the right side of the baffle (13) is communicated with a right feedback cavity of the pilot valve through a right throttling hole (31), and an air inlet hole (19) of the pilot valve is communicated with the left throttling hole and the right throttling hole (31) through a pilot valve core hole channel arranged on a pilot valve core (9).
2. The air valve chamber of an air operated diaphragm pump according to claim 1, wherein: when an air inlet (19) on the pilot valve is communicated with a left air chamber cavity (39), the position of the diaphragm changes to push the main valve core (2) to enable a right air chamber cavity (40) to be communicated with the exhaust hole (32) and drive the baffle (13) to deflect leftwards, then the throttle opening on the left side is gradually smaller than the throttle opening on the right side, the left feedback cavity pushes the pilot valve core (9) to enable the air inlet (19) to be communicated with the right air chamber cavity (40), the 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 (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 (19) to be communicated with the left air chamber cavity (39).
3. An air valve chamber of an air operated diaphragm pump 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 passage, a left main valve pore passage inner groove and a right main valve pore passage inner groove are arranged in the length direction of the main valve pore passage at intervals, the diameter of the left main valve pore passage inner groove is larger than that of the left convex ring, the diameter of the right main valve pore passage inner groove is larger than that of the right convex ring, and 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), the air in the left air chamber cavity (39) is communicated with the exhaust hole (32) through the left main valve pore passage 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 the inner groove of the duct of the right main valve.
4. The air valve chamber of an air operated diaphragm pump according to claim 3, wherein: left main valve pore inside groove and right main valve pore inside groove all are provided with two, and two left main valve pore inside grooves interval sets up and communicates through left intercommunicating pore, and two right main valve pore inside grooves interval sets up and communicates through right intercommunicating pore.
5. The air valve chamber of an air operated diaphragm pump according to claim 4, wherein: the outer port of the left communicating hole and the outer port of the right communicating hole are communicated to the outside of the air valve chamber body (1), a first blocking head (37) is arranged at the outer port of the left communicating hole, and a second blocking head (38) is arranged at the outer port of the right communicating hole.
6. An air valve chamber of an air operated diaphragm pump according to any of claims 1 to 5, wherein: the cross section of the baffle (13) is of a bilaterally symmetrical wedge-shaped structure, the large-diameter end of the baffle (13) is arranged in the exhaust hole, and the tip end of the baffle (13) is connected with the main valve core (2).
7. An air valve chamber of an air operated diaphragm pump according to claim 6, wherein: exhaust hole (32) and main valve pore are the cross setting, the big footpath end and the exhaust hole (32) threaded connection of baffle (13), the pointed end and the main valve core (2) cooperation of pegging graft of baffle (13).
8. An air valve chamber of an air operated diaphragm pump according to any of claims 1 to 5 and 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 about an exhaust hole (32), the left transverse hole and the right transverse hole penetrate through the exhaust hole (32) in the gas valve chamber body (1), a third plugging head (30) is arranged at an outer port of the left transverse hole, a fourth plugging 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. The air valve chamber of an air operated diaphragm pump according to claim 8, wherein: the left sealing head (30) is provided with a left small hole in the axial direction and the circumferential direction, the right sealing head (11) is provided with a right small hole in the axial direction and the circumferential direction, 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).
10. An air valve chamber of an air operated diaphragm pump according to any of claims 1 to 5, 7 and 9, wherein: the pilot valve comprises a pilot valve body (8), a pilot valve pore channel matched with a pilot valve core (9) is 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 positioned in the left end cover (7), a right feedback cavity is positioned 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 connected between the two elastic elements (10) in a jacking mode.
11. The air valve chamber of an air operated diaphragm pump according to claim 10, wherein: a left air inlet hole (18) and a right air inlet hole (20) are arranged in the pilot valve pore passage at intervals, a left blocking ring and a right blocking ring which are in sealing fit with the pilot valve pore passage 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 opening of the left throttling hole is consistent with that of a throttling opening 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 throttling opening of the left throttling opening is gradually smaller than the throttling opening of the right throttling opening (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. An air valve chamber of an air operated diaphragm pump according to claim 11, wherein: the pilot valve core pore passage comprises a left pore passage and a right pore passage, the left pore passage comprises a left radial pore passage (22) and a left axial pore passage (21) which are communicated with each other, the right pore passage comprises a right radial pore passage (23) and a right axial pore passage (24) which are communicated with each other, ports of the left radial pore passage (22) and the right radial pore passage (23) are both positioned between the left blocking ring and the right blocking ring, a port of the left axial pore passage (21) is communicated with the left feedback cavity, and a port of the right axial pore passage (24) is communicated with the right feedback cavity.
13. The air valve chamber of an air operated diaphragm pump according to claim 11 or 12, wherein: the air valve chamber 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 exhaust hole (32) is located at the bottom of the installation groove and communicated with the installation groove.
14. A pneumatic diaphragm pump characterized in that: comprising an air valve chamber of an air operated diaphragm pump according to any of claims 1-13.
15. An air operated diaphragm pump according to claim 13, wherein: the left diaphragm and the right diaphragm both comprise inner diaphragms (6) and outer diaphragms (5), and the inner diaphragms (6) of the left diaphragm and the right diaphragm are connected with the outer diaphragms (5) through outer clamping plates (4) and inner clamping plates (12).
16. An air operated diaphragm pump according to claim 14 or 15, wherein: two 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 the 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 to the end part of the connecting rod shaft (15).
17. An air operated diaphragm pump according to claim 16, wherein: the left air chamber cavity (39) comprises a left upright post (3) and a left side portion of an air valve chamber body (1) which are connected in a sealing mode, the right air chamber cavity (40) comprises a right upright post (43) and a right side portion of the air valve chamber body (1) which are connected in a sealing mode, 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 |
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| CN115234483A true CN115234483A (en) | 2022-10-25 |
| CN115234483B CN115234483B (en) | 2023-11-24 |
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| 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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| 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 |
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| Publication number | Publication date |
|---|---|
| CN115234483B (en) | 2023-11-24 |
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