CN210087580U - Diaphragm pump diaphragm, swing frame and diaphragm pump - Google Patents
Diaphragm pump diaphragm, swing frame and diaphragm pump Download PDFInfo
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- CN210087580U CN210087580U CN201920494229.3U CN201920494229U CN210087580U CN 210087580 U CN210087580 U CN 210087580U CN 201920494229 U CN201920494229 U CN 201920494229U CN 210087580 U CN210087580 U CN 210087580U
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- diaphragm pump
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- blind hole
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Abstract
The utility model discloses a diaphragm pump diaphragm, swing span and diaphragm pump belongs to the diaphragm pump field. The lower surface of a working area of the diaphragm pump diaphragm is provided with a step-shaped blind hole used for being connected with a swing head of a diaphragm pump swing frame, and the diameter of an opening part of the step-shaped blind hole is smaller than the inner diameter of the step-shaped blind hole. The utility model discloses reduced the use and the installation procedure of part, simple process can not appear because connect the seepage that the jail leads to, has reduced manufacturing cost. And the utility model discloses can cause the diaphragm to rotate slightly along with the swing head, the diaphragm does not have the torn danger of being rubbed, has reduced the diaphragm fracture, has improved the life-span of diaphragm greatly.
Description
Technical Field
The utility model relates to a diaphragm pump field especially indicates a diaphragm pump diaphragm, swing span and diaphragm pump.
Background
Diaphragm pumps rely on the back and forth pumping of a diaphragm to change the working chamber volume to draw in and expel fluid. The diaphragm separates the sucked liquid from the discharged liquid, and when the diaphragm moves to one side of the transmission mechanism, the liquid is sucked by negative pressure when the pump cavity works, and when the diaphragm pad moves to the other side, the liquid is discharged.
A diaphragm pump of the prior art is shown in fig. 1-5 (including only the diaphragm, the swing frame and the necessary components connected to them), where fig. 1 is a front view, fig. 2 is a top view, fig. 3 is a sectional view taken along the line a-a of fig. 1, fig. 4 is a diagram of the motion trajectory of the swing head of the swing frame, and fig. 5 is an exploded view.
As shown in fig. 1-3 and 5, the swing frame 4 has three swing heads 5 arranged in a circle, an eccentric shaft 8 is arranged on the motor output shaft 3, a bearing 9 of the swing frame 4 is sleeved on the eccentric shaft 8, and the eccentric shaft 8 causes the swing frame axis 1 and the motor output axis 2 not to be parallel, and the two form an angle a. As shown in fig. 4, when the motor output shaft 3 drives the swing frame 4 to rotate, the swing head 5 of the swing frame 4 has a rotation tendency i in the same direction as the motor output shaft 3 and an inclined vertical movement (swing) ii, and the rotation direction of the motor output shaft is iii. The movement of the oscillating head 5 in the up-down direction in which it is tilted causes the diaphragm 6 to deform in the up-down direction, thereby alternately changing the volume of the working chamber 7 to suck and discharge the liquid. In FIG. 3, 13 is a diaphragm support and 14 is a diaphragm chamber.
The prior art diaphragm requires the use of a piston 10, a screw 11 to effect the connection to the swing frame 4. The diaphragm 6 is provided with a through hole for the screw 11 to pass through, parts such as a sealing gasket 12 are required to be added at the screw 11 and the through hole for preventing the diaphragm 6 from leaking, and a sealing glue is required to be coated on the screw for preventing the screw from loosening. The prior art is therefore very cumbersome to install and may leak due to a weak connection. The production cost is high.
In addition, the connection of the membrane to the swing frame is a fixed connection, and the connection is very tight in order to prevent leakage, i.e. the membrane is rigidly and firmly connected with the swing frame; however, as mentioned above, the swing head of the swing frame has a tendency of rotating in the same direction as the output shaft of the motor when the diaphragm pump works, and the diaphragm is rigidly and tightly connected with the swing frame, so that the diaphragm can slightly rotate along with the swing head, which can cause tearing, pulling and kneading phenomena to the diaphragm, so that the diaphragm is subjected to a great tearing, pulling and kneading force at the joint with the swing head (the area where the diaphragm deforms up and down, i.e. the working area of the diaphragm), which results in a short service life of the diaphragm, and the diaphragm often causes tearing, pulling and kneading due to the rotation of the swing frame, cracking occurs, and the product rejection rate is high.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a diaphragm pump diaphragm, swing span and diaphragm pump, the utility model discloses reduced the use and the installation procedure of part, simple process can not appear because connect the seepage that the jail leads to, has reduced manufacturing cost. And the utility model discloses can cause the diaphragm to rotate slightly along with the swing head, the diaphragm does not have the torn danger of being rubbed, has reduced the diaphragm fracture, has improved the life-span of diaphragm greatly.
The utility model provides a technical scheme as follows:
in a first aspect, the utility model provides a diaphragm pump diaphragm, the workspace lower surface of diaphragm is provided with the step form blind hole that is used for being connected with the swing head of diaphragm pump swing span, the opening diameter of step form blind hole is less than the inside diameter of step form blind hole.
Further, the diaphragm pump membrane has an upwardly convex protrusion at the working area.
Further, along the direction from the center to the periphery of the diaphragm pump membrane, the upward protruding degree of the protruding portion gradually increases, so that the protruding portion inclines upwards by a first angle along the direction from the center to the periphery of the diaphragm pump membrane, and the first angle is equal to the included angle between the axis of the swing frame and the output axis of the motor.
Further, the diaphragm pump membrane has a recess depressed downward at the working area.
Further, along the direction from the center to the periphery of the diaphragm pump membrane, the downward concave degree of the concave part is gradually increased, so that the concave part is inclined downwards by a second angle along the direction from the center to the periphery of the diaphragm pump membrane, and the second angle is equal to the included angle between the axis of the swing frame and the output axis of the motor.
Furthermore, the working area of the diaphragm pump diaphragm is provided with a thickened area with the upper surface thickened upwards, and the stepped blind hole is formed in the thickened area.
Further, the inner diameter of the stepped blind hole is gradually reduced along the direction from the opening portion of the stepped blind hole to the inside of the stepped blind hole.
In a second aspect, the utility model provides a diaphragm pump swing span, be provided with the swing head on the diaphragm pump swing span, swing overhead end is provided with the bellying, the terminal diameter of bellying is greater than the root diameter of bellying.
Further, the diameter of the end of the boss is gradually reduced along the direction from the root of the boss to the end of the boss.
A third aspect of the present invention provides a diaphragm pump, including the diaphragm pump diaphragm of the first aspect and the diaphragm pump swing frame of the second aspect, wherein the projection of the diaphragm pump swing frame is inserted into the step-shaped blind hole of the diaphragm pump diaphragm.
The utility model discloses following beneficial effect has:
the utility model discloses in, only need to inject diaphragm pump diaphragm's the overhead bellying of swing of diaphragm pump swing span into the step form blind hole of diaphragm pump diaphragm and can accomplish being connected of diaphragm pump swing span and diaphragm pump diaphragm, saved parts such as piston, screw, sealing washer among the prior art, left out sealed gluey process, reduced the use and the installation procedure of part, simple process can not appear because connect the seepage that the jail leads to, reduced manufacturing cost.
And, the utility model discloses the bulge that uses the swing span injects the mode of step form blind hole and connects diaphragm and swing span for the diaphragm is not the rigidity fastening with being connected of swing head, has avoided the diaphragm that the rigidity fastening connection among the prior art leads to tear along with the slight rotation of swing head and has drawn the phenomenon of rubbing to what the diaphragm caused. The utility model discloses a swing head bellying can not cause the diaphragm to rotate along with the swing head is slight in inserting the diaphragm blind hole, and only simple diaphragm is along with swing head up-and-down motion, and the connection of this kind of structure makes the atress situation of diaphragm obtain the improvement that is showing, and the diaphragm is not rubbed tearing danger, has reduced the diaphragm fracture, has improved the life-span of diaphragm greatly.
To sum up, the utility model discloses reduce the use and the installation procedure of part, simple process can not appear because connect the seepage that the jail leads to, has reduced manufacturing cost. And the utility model discloses can cause the diaphragm to rotate slightly along with the swing head, the diaphragm does not have the torn danger of being rubbed, has reduced the diaphragm fracture, has improved the life-span of diaphragm greatly.
Drawings
FIG. 1 is a front view of a prior art diaphragm pump (including only the diaphragm, the swing frame and the necessary components associated therewith, the same below);
FIG. 2 is a top view of a prior art diaphragm pump;
FIG. 3 is a sectional view taken along line A-A of FIG. 1;
FIG. 4 is a diagram of a motion trajectory of a swing head of the swing frame;
FIG. 5 is an exploded view of a prior art diaphragm pump;
FIG. 6 is an angled perspective view of one embodiment of a diaphragm pump diaphragm of the present invention;
FIG. 7 is a perspective view of another angle of one embodiment of a diaphragm pump diaphragm of the present invention;
FIG. 8 is a bottom view of one embodiment of a diaphragm pump of the present invention;
FIG. 9 is a top view of one embodiment of a diaphragm pump diaphragm of the present invention;
FIG. 10 is a cross-sectional view of one embodiment of a diaphragm pump diaphragm of the present invention (i.e., the cross-sectional view taken along line A-A of FIG. 8);
FIG. 11 is a cross-sectional view of another embodiment of a diaphragm pump diaphragm of the present invention;
fig. 12 is a perspective view of a diaphragm pump swing frame according to the present invention;
fig. 13 is a cross-sectional view of a diaphragm pump swing frame of the present invention;
FIG. 14 is a schematic view of a diaphragm pump diaphragm in accordance with an embodiment of the present invention assembled with a diaphragm pump swing frame;
FIG. 15 is a schematic view of a diaphragm pump diaphragm in accordance with another embodiment of the present invention assembled with a diaphragm pump swing frame;
fig. 16 is an exploded view of fig. 14.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
In one aspect, the present invention provides a diaphragm pump diaphragm 100, as shown in fig. 6-11, the lower surface of the working area 110 of the diaphragm pump diaphragm 100 is provided with a step-shaped blind hole 120 for connecting with the swing head 210 of the diaphragm pump swing frame 200, and the step-shaped blind hole 120 is opened on the lower surface of the diaphragm pump and does not penetrate through the upper surface of the diaphragm pump diaphragm; the diameter of the opening 121 of the stepped blind hole 120 is smaller than the diameter of the interior 121 of the stepped blind hole 120.
In cooperation with the diaphragm pump membrane 100, as shown in fig. 12-13, the diaphragm pump swing frame 200 is provided with a swing head 210, the top end of the swing head 210 is provided with a protrusion 220, and the diameter of the end 221 of the protrusion 220 is larger than the diameter of the root 222 of the protrusion 220.
During assembly, the boss on the swing head of the swing frame of the diaphragm pump is inserted into the stepped blind hole of the diaphragm pump diaphragm, and after assembly, as shown in fig. 14-15, the assembly process is as shown in fig. 16. Because the diaphragm pump diaphragm is made of soft elastic material, the bulge can be conveniently inserted into the step-shaped blind hole, so that the diaphragm pump swing frame is conveniently connected with the diaphragm pump diaphragm. In order to connect the diaphragm pump swing frame and the diaphragm pump diaphragm more conveniently, the diaphragm pump diaphragm can be heated to a certain temperature, so that the soft elasticity of the diaphragm pump diaphragm is increased.
After diaphragm pump swing span and diaphragm pump diaphragm link together, because the opening diameter of step form blind hole is less than the inside diameter of step form blind hole, the terminal diameter of bellying is greater than the root diameter of bellying, therefore the diaphragm pump is at the during operation, and diaphragm pump swing span and diaphragm pump diaphragm can not the subdividing, and the diaphragm pump diaphragm is warp in the upper and lower direction under the drive of diaphragm pump swing span to alternate the volume of working chamber 500, come the suction and discharge liquid.
The inner diameter of the stepped blind hole can be equal to the diameter of the tail end of the convex part, and more preferably, the inner diameter of the stepped blind hole is slightly larger than the diameter of the tail end of the convex part; the diameter of the opening part of the stepped blind hole can be equal to the diameter of the root part of the lug boss, and more preferably, the diameter of the opening part of the stepped blind hole is slightly larger than the diameter of the root part of the lug boss.
The utility model discloses in, only need to inject diaphragm pump diaphragm's the overhead bellying of swing of diaphragm pump swing span into the step form blind hole of diaphragm pump diaphragm and can accomplish being connected of diaphragm pump swing span and diaphragm pump diaphragm, saved parts such as piston, screw, sealing washer among the prior art, left out sealed gluey process, reduced the use and the installation procedure of part, simple process can not appear because connect the seepage that the jail leads to, reduced manufacturing cost.
And, the utility model discloses the bulge that uses the swing span injects the mode of step form blind hole and connects diaphragm and swing span for the diaphragm is not the rigidity fastening with being connected of swing head, has avoided the diaphragm that the rigidity fastening connection among the prior art leads to tear along with the slight rotation of swing head and has drawn the phenomenon of rubbing to what the diaphragm caused. The utility model discloses a swing head bellying can not cause the diaphragm to rotate along with the swing head is slight in inserting the diaphragm blind hole, and only simple diaphragm is along with swing head up-and-down motion, and the connection of this kind of structure makes the atress situation of diaphragm obtain the improvement that is showing, and the diaphragm is not rubbed tearing danger, has reduced the diaphragm fracture, has improved the life-span of diaphragm greatly.
To sum up, the utility model discloses reduce the use and the installation procedure of part, simple process can not appear because connect the seepage that the jail leads to, has reduced manufacturing cost. And the utility model discloses can cause the diaphragm to rotate slightly along with the swing head, the diaphragm does not have the torn danger of being rubbed, has reduced the diaphragm fracture, has improved the life-span of diaphragm greatly.
As a modification of the present invention, as shown in fig. 11, the diaphragm pump diaphragm 100 has a projection 130 projecting upward at the working area 110.
The working area of the diaphragm pump diaphragm is the area of the diaphragm which is bent and deformed up and down, and the diaphragm pump diaphragm in the prior art is of a flat structure. The diaphragm thus constructed has an upward deformation and a downward deformation in one operation cycle (one suction and discharge of liquid is completed) when the diaphragm pump is operated. Specifically, the method comprises the following steps: the swinging head moves downwards, and pulls the membrane to deform downwards, so that liquid is sucked; the swinging head moves upwards to push the membrane to deform upwards to finish the liquid spraying, and the membrane has two deformations in opposite directions in one working period.
The utility model discloses in, at the diaphragm at the workspace for the diaphragm upwards protrudes, also gives diaphragm ascending predeformation promptly, and predeformation's height is identical to the highest point position with the motion of swing head, and when swing head motion to peak promptly, the bulge of diaphragm is in the state of indeformable. The diaphragm thus constructed is deformed only once in the downward direction during a working cycle. Specifically, the method comprises the following steps: the swinging head moves downwards, and pulls the membrane to deform downwards, so that liquid is sucked; the swinging head moves upwards, and the diaphragm is recovered and not deformed, so that the diaphragm is deformed for one time only downwards in one working period, and the deformation times of the diaphragm are reduced by times.
The utility model discloses the deformation number of times of reduction the diaphragm at double, because the fatigue limit number of times of bending of diaphragm is certain, consequently the utility model discloses the life-span of bending of extension diaphragm that can double.
Preferably, as shown in fig. 11, the degree of upward protrusion of the protrusion 130 gradually increases in the direction from the center to the outer periphery of the diaphragm pump diaphragm 100, such that the protrusion 130 is inclined upward by a first angle α in the direction from the center to the outer periphery of the diaphragm pump diaphragm 100, the first angle α being equal to the angle a of the swing frame axis 230 to the motor output axis 300.
Because the motion of the swing head in the up-and-down direction is not parallel motion but up-and-down swing, when the swing head moves to the highest point position, the outer side (the side close to the periphery of the diaphragm) of the swing head is high, the inner side (the side close to the center of the diaphragm) is low, an inclined angle with the high outer side and the low inner side exists on the upper surface of the swing head, and the inclined angle is equal to the included angle between the axis of the swing frame and the output axis of the motor according to the geometric relation. In order to make the bulge identical with the overhead surface of swing when the swing head moves to the peak position, the utility model discloses also incline the same angle with the bulge, swing head and diaphragm fully contact like this, improved the area of diaphragm deformation part, improved working chamber volume expansion rate to improve the self priming performance of diaphragm pump.
As another modification of the present invention, as shown in fig. 6 to 10, the diaphragm pump diaphragm 100 has a recess 140 depressed downward at the working area 110.
Similar with the bulge, the utility model discloses in, at the diaphragm in the workspace for the diaphragm undercut, also be for a decurrent predeformation of diaphragm, predeformation's downward height and swing head move to the minimum point position identical, when swing head moves to the minimum promptly, the depressed part of diaphragm is in the state of indeformable. A diaphragm of such a construction is deformed only once in an upward direction during a working cycle. Specifically, the method comprises the following steps: the swinging head moves upwards to push the membrane to deform upwards, and liquid is sprayed out; the swinging head moves downwards, and the diaphragm is restored to the original state and is not deformed, so that the diaphragm is deformed for one time upwards in one working period, and the deformation times of the diaphragm are reduced by times.
The utility model discloses the deformation number of times of reduction the diaphragm at double, because the fatigue limit number of times of bending of diaphragm is certain, consequently the utility model discloses the life-span of bending of extension diaphragm that can double.
Preferably, as shown in fig. 6-10, the depression 140 is depressed to a progressively greater extent in a direction from the center to the periphery of the diaphragm pump diaphragm 100 such that the depression 140 is downwardly inclined in the direction from the center to the periphery of the diaphragm pump diaphragm 100 by a second angle β, the second angle β being equal to the angle a of the swing frame axis 230 to the motor output axis 300.
Because the motion of the swing head in the up-and-down direction is not parallel motion but up-and-down swing, when the swing head moves to the lowest point position, the outer side (the side close to the periphery of the diaphragm) of the swing head is low, the inner side (the side close to the center of the diaphragm) is high, an inclined angle with the outer side low and the inner side high exists on the upper surface of the swing head, and the inclined angle is equal to the included angle between the axis of the swing frame and the output axis of the motor according to the geometric relationship. In order to make the depressed part identical with the overhead surface of swing when the head that swings moves to minimum point position, the utility model discloses also incline the same angle with the depressed part, swing head and diaphragm fully contact like this, improved the area of diaphragm deformation part, improved working chamber volume expansion rate to improve the self priming performance of diaphragm pump.
As another improvement of the present invention, as shown in fig. 6, 9, 10 and 11, the working area 110 of the diaphragm pump diaphragm 100 has a thickened area 150 with an upper surface thickened upward, and the step-shaped blind 120 holes are formed in the thickened area 150.
The thickened area is not only used for setting up step form blind hole to, the thickened area can also replace original piston structure, is convenient for occupy and fill the working chamber, and working chamber volume expansion rate when improving the diaphragm and removing downwards improves the self priming performance of diaphragm pump. Preferably, the convex profile of the thickened region is adapted to the profile of the working chamber.
Further, the inside diameter of the stepped blind hole is gradually reduced along the direction from the opening portion of the stepped blind hole to the inside of the stepped blind hole. Accordingly, the tip diameter of the boss gradually decreases in a direction from the root of the boss to the tip of the boss. The convex part can be conveniently inserted into the step-shaped blind hole.
On the other hand, the present invention provides a diaphragm pump swing frame 200, as shown in fig. 12-13, a swing head 210 is provided on the diaphragm pump swing frame 200, a protrusion 220 is provided on the top end of the swing head 210, and the diameter of the end 221 of the protrusion is larger than the diameter of the root 222 of the protrusion.
The convex part on the swinging head can be integrated with the swinging head body or can be separated from the swinging head body, and the convex part and the swinging head body are connected together in a screw or thread mode.
The utility model discloses in, only need to inject diaphragm pump diaphragm's the overhead bellying of swing of diaphragm pump swing span into the step form blind hole of diaphragm pump diaphragm and can accomplish being connected of diaphragm pump swing span and diaphragm pump diaphragm, saved parts such as piston, screw, sealing washer among the prior art, left out sealed gluey process, reduced the use and the installation procedure of part, simple process can not appear because connect the seepage that the jail leads to, reduced manufacturing cost.
And, the utility model discloses the bulge that uses the swing span injects the mode of step form blind hole and connects diaphragm and swing span for the diaphragm is not the rigidity fastening with being connected of swing head, has avoided the diaphragm that the rigidity fastening connection among the prior art leads to tear along with the slight rotation of swing head and has drawn the phenomenon of rubbing to what the diaphragm caused. The utility model discloses a swing head bellying can not cause the diaphragm to rotate along with the swing head is slight in inserting the diaphragm blind hole, and only simple diaphragm is along with swing head up-and-down motion, and the connection of this kind of structure makes the atress situation of diaphragm obtain the improvement that is showing, and the diaphragm is not rubbed tearing danger, has reduced the fracture that the swing head led to the fact the diaphragm, has improved the life-span of diaphragm greatly.
To sum up, the utility model discloses reduce the use and the installation procedure of part, simple process can not appear because connect the seepage that the jail leads to, has reduced manufacturing cost. And the utility model discloses can cause the diaphragm to rotate slightly along with the swing head, the diaphragm does not have the torn danger of being rubbed, has reduced the fracture that the swing head led to the fact the diaphragm, has improved the life-span of diaphragm greatly.
The utility model discloses in, the workspace of diaphragm pump diaphragm is a plurality of, and the workspace uses diaphragm pump diaphragm central line axial circumference to distribute, and the swing head on the swing span also is a plurality of, and the swing head uses swing span central line axial circumference to distribute. The number of working zones and oscillating heads is preferably 3.
The part of the diaphragm pump swing frame below the swing head is a bearing 230, and a plurality of through holes 240 which are uniformly distributed by the central line of the through holes of the bearing are arranged on the outer ring of the bearing 230, so that the bearing is convenient to disassemble during maintenance.
Further, the diameter of the end of the boss gradually decreases in the direction from the root of the boss to the end of the boss. Accordingly, the inner diameter of the stepped blind hole is gradually reduced along the direction from the opening portion of the stepped blind hole to the inside of the stepped blind hole. The convex part can be conveniently inserted into the step-shaped blind hole.
In still another aspect, the present invention further provides a diaphragm pump comprising the diaphragm pump diaphragm and the diaphragm pump swing frame, wherein the protruding portion of the diaphragm pump swing frame is inserted into the step-shaped blind hole of the diaphragm pump diaphragm, as shown in fig. 14 to 16. Other parts of the diaphragm pump may be the structures in the prior art, such as the diaphragm chamber 600, the diaphragm support 400 and the like in fig. 14 and 15, and the other parts of the diaphragm pump will not be described in detail.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The diaphragm pump diaphragm is characterized in that a step-shaped blind hole used for being connected with a swing head of a diaphragm pump swing frame is formed in the lower surface of a working area of the diaphragm, and the diameter of an opening portion of the step-shaped blind hole is smaller than the inner diameter of the step-shaped blind hole.
2. The diaphragm pump diaphragm of claim 1 having an upwardly convex bulge at the working area.
3. The diaphragm pump diaphragm of claim 2 wherein the extent to which said projection projects upwardly increases in a direction from the center to the periphery of said diaphragm pump diaphragm such that said projection is inclined upwardly in a direction from the center to the periphery of said diaphragm pump diaphragm by a first angle equal to the angle of the swing frame axis to the motor output axis.
4. The diaphragm pump diaphragm of claim 1 having a downwardly concave depression at the working area.
5. A diaphragm pump diaphragm according to claim 4 wherein said depression is downwardly concave in a direction from the center to the periphery of said diaphragm pump diaphragm by a progressively increasing amount such that said depression is downwardly concave in a direction from the center to the periphery of said diaphragm pump diaphragm by a second angle equal to the angle of the swing frame axis relative to the motor output axis.
6. Diaphragm pump diaphragm according to any of claims 1 to 5, characterised in that the working area of the diaphragm pump diaphragm has a thickened area with an upwardly thickened upper surface, on which the stepped blind hole is provided.
7. A diaphragm pump diaphragm according to claim 6, wherein the inner diameter of the stepped blind hole is gradually reduced in a direction from the opening portion of the stepped blind hole to the inside of the stepped blind hole.
8. The diaphragm pump swing frame is characterized in that a swing head is arranged on the diaphragm pump swing frame, a protruding portion is arranged at the top end of the swing head, and the diameter of the tail end of the protruding portion is larger than the diameter of the root portion of the protruding portion.
9. The diaphragm pump swing frame according to claim 8, wherein a tip diameter of the boss gradually decreases in a direction from a root of the boss to a tip of the boss.
10. A diaphragm pump comprising a diaphragm pump membrane according to any of claims 1-7 and a diaphragm pump swing frame according to any of claims 8-9, wherein the boss of the diaphragm pump swing frame is inserted into the stepped blind hole of the diaphragm pump membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920494229.3U CN210087580U (en) | 2019-04-12 | 2019-04-12 | Diaphragm pump diaphragm, swing frame and diaphragm pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920494229.3U CN210087580U (en) | 2019-04-12 | 2019-04-12 | Diaphragm pump diaphragm, swing frame and diaphragm pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210087580U true CN210087580U (en) | 2020-02-18 |
Family
ID=69474158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920494229.3U Active CN210087580U (en) | 2019-04-12 | 2019-04-12 | Diaphragm pump diaphragm, swing frame and diaphragm pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210087580U (en) |
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2019
- 2019-04-12 CN CN201920494229.3U patent/CN210087580U/en active Active
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