CN216842150U - Diaphragm pump - Google Patents
Diaphragm pump Download PDFInfo
- Publication number
- CN216842150U CN216842150U CN202122457861.0U CN202122457861U CN216842150U CN 216842150 U CN216842150 U CN 216842150U CN 202122457861 U CN202122457861 U CN 202122457861U CN 216842150 U CN216842150 U CN 216842150U
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- cover plate
- diaphragm
- upper cover
- groove
- buffer
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Abstract
The utility model discloses a diaphragm pump, which comprises a pump body, wherein a buffering component is arranged on the pump body, the buffering component comprises a middle cover plate, an upper cover plate and a buffering diaphragm, the upper cover plate is positioned above the middle cover plate, the middle cover plate is arranged on the pump body, the opposite ends of the upper cover plate and the middle cover plate are respectively provided with a first groove and a second groove, the first groove and the second groove can jointly form a containing cavity, the buffering diaphragm is placed in the containing cavity, an adjusting screw is embedded on the buffering diaphragm, the other end of the adjusting screw penetrates through the upper cover plate and is connected with a nut thread, a spring is sleeved on the adjusting screw, the two ends of the spring are respectively connected with the upper cover plate and the buffering diaphragm, when the adjusting screw drives the buffering diaphragm to move close to the upper cover plate, a certain distance is arranged between the middle cover plate and the buffering diaphragm and forms a buffering cavity, the pulsation can be effectively eliminated.
Description
Technical Field
The utility model relates to a pump field especially relates to a diaphragm pump.
Background
The existing diaphragm pump generates pulsation during operation, the pulsation can affect the use of precision parts in a flow path, the strength of the pulsation in the flow path can be changed along with the change of the pressure of the flow path, and the changed pulsation cannot be sufficiently eliminated by a single unchanged damping chamber.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above disadvantages, an object of the present invention is to provide a diaphragm pump capable of effectively eliminating pulsation.
In order to achieve the above purpose, the utility model discloses a technical scheme is: the utility model provides a diaphragm pump, includes the pump body, be provided with the buffering subassembly on the pump body, the buffering subassembly includes well apron, upper cover plate and buffering diaphragm, the upper cover plate is located well apron top and well apron and sets up on the pump body, the relative one end of upper cover plate and well apron is provided with first recess and second recess respectively, first recess and second recess can form the holding chamber jointly, buffering diaphragm has been placed to the holding intracavity, it is equipped with adjusting screw to inlay on the buffering diaphragm, the adjusting screw other end runs through upper cover plate and nut threaded connection, the cover is equipped with the spring on the adjusting screw, the spring both ends are connected with upper cover plate and buffering diaphragm respectively, work as when adjusting screw drives buffering diaphragm and does the motion of being close to the upper cover plate, it has the determining deviation and forms the buffering cavity to have between well apron and the buffering diaphragm.
Further, the upper cover plate comprises a connecting part, an extending part and a fixing part which are integrally formed from bottom to top, and the fixing part is connected with the middle cover plate and the sizes of the fixing part, the middle cover plate and the pump body are equal.
Further, be provided with spread groove, extending groove and fixed slot on connecting portion, extension and the fixed part respectively, spread groove, extending groove and fixed slot communicate in proper order and form first recess jointly, the size of spread groove and extending groove all is greater than buffer diaphragm, the size of fixed slot is greater than spring and spring one end and is located the fixed slot.
Furthermore, a fixing through hole for the adjusting screw to penetrate through is formed in the fixing part, and a nut connected with the adjusting screw is located on the fixing part.
Furthermore, a plurality of upper connecting holes are formed in the connecting portion, a plurality of middle connecting holes are formed in the middle cover plate, the upper connecting holes and the middle connecting holes are equal in number and correspond to the middle connecting holes in position one by one.
Furthermore, the number of the upper connecting holes and the number of the middle connecting holes are four, and the four upper connecting holes and the four middle connecting holes are respectively positioned at four corners of the connecting part and four corners of the middle cover plate.
Compared with the prior art, the utility model, its beneficial effect lies in: when the pulsation of the fluid changes, the nut on the adjusting screw rod is screwed, and the distance between the buffer diaphragm and the upper cover plate is adjusted, so that the action distance of the buffer diaphragm is changed, the pulsation which changes under different conditions is adapted, and the pulsation is effectively eliminated.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a cross-sectional view of the present invention;
fig. 3 is a cross-sectional view of the present invention;
fig. 4 is an exploded view of a cushioning assembly.
In the figure:
1-a pump body; 2-a buffer component; 21-middle cover plate; 22-upper cover plate; 23-a buffer membrane; 24-a spring; 25-adjusting the screw; 26-a nut; 3-connecting holes; 4-middle connecting hole.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to the attached drawings 1-4, a diaphragm pump comprises a pump body 1, a buffer assembly 2 is arranged on the pump body 1, the buffer assembly 2 comprises a middle cover plate 21, an upper cover plate 22 and a buffer diaphragm 23, the upper cover plate 22 is positioned above the middle cover plate 21, the middle cover plate 21 is arranged on the pump body 1, a first groove and a second groove are respectively arranged at the opposite ends of the upper cover plate 22 and the middle cover plate 21, the first groove and the second groove can jointly form an accommodating cavity, the buffer diaphragm 23 is arranged in the accommodating cavity, an adjusting screw 25 is embedded on the buffer diaphragm 23, the other end of the adjusting screw 25 penetrates through the upper cover plate 22 and is in threaded connection with a nut 26, a spring 24 is sleeved on the adjusting screw 25, and the two ends of the spring 24 are respectively connected with the upper cover plate 22 and the buffer diaphragm 23, when the adjusting screw 25 drives the buffer diaphragm 23 to move close to the upper cover plate 22, a certain distance is formed between the middle cover plate 21 and the buffer diaphragm 23 to form a buffer chamber;
the upper cover plate 22 is composed of a connecting part, an extending part and a fixing part which are integrally formed from bottom to top, the fixing part is connected with the middle cover plate 21, the fixing part and the middle cover plate 21 are equal in size, connecting parts, connecting grooves, extending grooves and fixing grooves are respectively arranged on the extending part and the fixing part, the connecting grooves, the extending grooves and the fixing grooves are sequentially communicated and jointly form a first groove, the connecting grooves and the extending grooves are larger than the buffer diaphragm 23 in size, the fixing grooves are larger than the springs 24 in size, one ends of the springs 24 are located in the fixing grooves, fixing through holes for the adjusting screws 25 to penetrate through are formed in the fixing part, and nuts 26 connected with the adjusting screws 25 are located on the fixing part;
the connecting portion is provided with a plurality of upper connecting holes 3, the middle cover plate 21 is provided with a plurality of middle connecting holes 4, the number of the upper connecting holes 3 and the middle connecting holes 4 is equal, the upper connecting holes correspond to the lower connecting holes in position, the number of the upper connecting holes 3 and the middle connecting holes 4 is four, and the four upper connecting holes 3 and the four middle connecting holes 4 are respectively positioned at four corners of the connecting portion and four corners of the middle cover plate 21.
The working principle is as follows: when fluid enters a buffer chamber formed between the middle cover plate 21 and the buffer diaphragm 23, the buffer diaphragm 23 moves upwards, the spring 24 is compressed, when the fluid flows out of the buffer chamber, the compressed spring 24 pushes the buffer diaphragm 23 to move downwards, and the downward movement distance is limited by the nut 26 at the top, so that the fluid pulsation formed during the action of the diaphragm pump is relieved.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (6)
1. The utility model provides a diaphragm pump, includes the pump body (1), be provided with buffering subassembly (2) on the pump body (1), its characterized in that: the buffer assembly (2) comprises a middle cover plate (21), an upper cover plate (22) and a buffer diaphragm (23), wherein the upper cover plate (22) is positioned above the middle cover plate (21) and the middle cover plate (21) is arranged on the pump body (1), one end, opposite to the upper cover plate (22) and the middle cover plate (21), of the upper cover plate (22) is respectively provided with a first groove and a second groove, the first groove and the second groove can jointly form an accommodating cavity, the buffer diaphragm (23) is placed in the accommodating cavity, an adjusting screw rod (25) is embedded in the buffer diaphragm (23), the other end of the adjusting screw rod (25) penetrates through the upper cover plate (22) and a nut (26) in threaded connection, a spring (24) is sleeved on the adjusting screw rod (25), two ends of the spring (24) are respectively connected with the upper cover plate (22) and the buffer diaphragm (23), and when the adjusting screw rod (25) drives the buffer diaphragm (23) to move close to the upper cover plate (22), the middle cover plate (21) and the buffer diaphragm (23) have a certain distance therebetween and form a buffer chamber.
2. A diaphragm pump according to claim 1, wherein: the upper cover plate (22) is composed of a connecting part, an extending part and a fixing part which are integrally formed from bottom to top, and the fixing part is connected with the middle cover plate (21) and the sizes of the fixing part, the middle cover plate (21) and the pump body (1) are equal.
3. A diaphragm pump according to claim 2, wherein: be provided with spread groove, extending groove and fixed slot on connecting portion, extension and the fixed part respectively, spread groove, extending groove and fixed slot communicate in proper order and form first recess jointly, the size of spread groove and extending groove all is greater than buffer diaphragm (23), the size of fixed slot is greater than spring (24) and spring (24) one end is located the fixed slot.
4. A diaphragm pump according to claim 3, wherein: the fixing part is provided with a fixing through hole for the adjusting screw rod (25) to penetrate through, and a nut (26) connected with the adjusting screw rod (25) is positioned on the fixing part.
5. A diaphragm pump according to claim 3, wherein: the connecting portion are provided with a plurality of upper connecting holes (3), the middle cover plate (21) is provided with a plurality of middle connecting holes (4), the upper connecting holes (3) and the middle connecting holes (4) are equal in number and are in one-to-one correspondence in position.
6. A diaphragm pump according to claim 5, wherein: the number of the upper connecting holes (3) and the number of the middle connecting holes (4) are four, and the four upper connecting holes (3) and the four middle connecting holes (4) are respectively positioned at four corners of the connecting part and four corners of the middle cover plate (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122457861.0U CN216842150U (en) | 2021-10-12 | 2021-10-12 | Diaphragm pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122457861.0U CN216842150U (en) | 2021-10-12 | 2021-10-12 | Diaphragm pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216842150U true CN216842150U (en) | 2022-06-28 |
Family
ID=82098628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122457861.0U Active CN216842150U (en) | 2021-10-12 | 2021-10-12 | Diaphragm pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216842150U (en) |
-
2021
- 2021-10-12 CN CN202122457861.0U patent/CN216842150U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |