CN216922469U - Fixing structure of discharge valve of diaphragm pump - Google Patents
Fixing structure of discharge valve of diaphragm pump Download PDFInfo
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- CN216922469U CN216922469U CN202220168768.XU CN202220168768U CN216922469U CN 216922469 U CN216922469 U CN 216922469U CN 202220168768 U CN202220168768 U CN 202220168768U CN 216922469 U CN216922469 U CN 216922469U
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- discharge valve
- fixing structure
- diaphragm pump
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Abstract
The utility model discloses a fixing structure of a discharge valve of a diaphragm pump, which comprises: the diaphragm chamber is provided with a central hole and a plurality of water outlets arranged around the central hole; a pump head cover provided with a top pressing part; the discharge valve is provided with a valve plate and a central column arranged on the bottom surface of the valve plate; the central column is arranged in the central hole, and the valve plate seals the water outlet; the center of the top of the valve plate is inwards sunken to form a sunken part, and the jacking part is pressed on the sunken part. The utility model utilizes the jacking action of the jacking part on the valve plate and the tensioning action of the diaphragm chamber on the neck part of the discharge valve, so that the sealing performance between the discharge valve and the diaphragm chamber can be kept as before under long-term work, thereby reducing the sealing performance attenuation under long-term use and prolonging the service life.
Description
Technical Field
The utility model relates to an internal structure of a diaphragm booster pump, in particular to a fixing structure of a discharge valve of the diaphragm booster pump.
Background
The diaphragm booster pump is used for the water purifier pressure boost mostly, and long-term operating pressure is under 70, 120PSI, and long-time back of working is because booster pump flow decay, leads to the water purifier water yield to descend, and user experience feels and falls thereupon. The main reason of the flow attenuation of the booster pump is that the sealing performance of the discharge valve is reduced under long-term high-pressure work, in a common discharge valve fixing structure in the prior art, the discharge valve and the diaphragm chamber are fixed in a mode that the neck of the discharge valve is tensioned, and the discharge valve made of rubber materials is aged and deformed under long-term high-pressure work, so that the sealing performance is reduced.
SUMMERY OF THE UTILITY MODEL
The present invention has been made to overcome the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a structure for fixing a discharge valve of a diaphragm pump, which can effectively fix the discharge valve for a long period of time, thereby improving the deterioration of sealing performance in long-term use.
In order to realize the purpose, the utility model adopts the following technical scheme:
a fixing structure of a discharge valve of a diaphragm pump, comprising:
the diaphragm chamber is provided with a central hole and a plurality of water outlets arranged around the central hole;
a pump head cover provided with a top pressing part;
the discharge valve is provided with a valve plate and a central column arranged on the bottom surface of the valve plate; the central column is arranged in the central hole, and the valve plate seals the water outlet;
the center of the top of the valve plate is inwards sunken to form a sunken part, and the jacking part is pressed on the sunken part.
The top pressing effect of the top pressing part on the valve plate and the tensioning effect of the diaphragm chamber on the neck part of the discharge valve are utilized, so that the sealing performance between the discharge valve and the diaphragm chamber can be kept as before under long-term work, the sealing performance attenuation under long-term use is reduced, and the service life is prolonged. Meanwhile, due to the compression effect of the jacking portion, the deformation opening angle of the valve plate is reduced, and water outlet is affected; therefore, the center of the top of the valve plate is inwards sunken to form a sunken part, the jacking part is pressed on the sunken part, the edge of the sunken part (the joint part of the bottom surface of the sunken part and the top surface of the valve plate) is used as a bending part for deformation of the valve plate, and the deformation opening angle of the valve plate can still be ensured under the pressing action of the jacking part.
Preferably, a certain gap is reserved between the outer edge of the pressing part and the outer edge of the recessed part, so that a space for facilitating deformation of the valve plate is formed, and the valve plate is prevented from being blocked by the pressing part when deformed and bent due to the existence of the space.
Preferably, the bottom surface of the recessed portion is a plane, and the bottom surface is in smooth transition connection with the top surface of the valve plate through an arc surface. The bottom surface of the concave part is a plane, so that the force applied to the discharge valve by the jacking part is more uniform; meanwhile, the bottom surface is connected with the top surface of the valve plate through smooth transition of the cambered surface, so that the valve plate is convenient to form.
Preferably, the valve plate is provided with a plurality of strip-shaped grooves which are radially arranged, the valve plate is divided into a plurality of valve clacks, and the valve clacks correspond to the water outlets one by one.
Preferably, a closed sealing rib is arranged on the bottom surface of each valve clack. Compared with the prior art that the whole face of the valve clack is tightly attached and sealed with the diaphragm chamber, the sealing ribs are tightly attached to the diaphragm chamber to achieve sealing, the requirement on the machining precision of the valve plate is lowered, and the fault tolerance rate is higher.
Preferably, the outer ring of the water outlet corresponding to each valve flap is provided with a closed sealing rib.
Preferably, the bottom surface of the valve flap is a plane.
Preferably, the thickness of the valve flap is gradually reduced from the center to the edge.
The utility model has the following beneficial effects:
1. the discharge valve is arranged in a central hole of the diaphragm chamber through the central column, the central column is tensioned to realize the fixation of the discharge valve, and meanwhile, the jacking action of the jacking part on the valve plate is utilized to ensure that the sealing performance between the discharge valve and the diaphragm chamber can also keep better sealing under the long-term work, so that the sealing performance attenuation under the long-term use is reduced, and the service life is prolonged.
2. The center of the top of the valve block is inwards sunken to form a sunken part, the jacking part is pressed on the sunken part, the edge of the sunken part (the joint part of the bottom surface of the sunken part and the top surface of the valve block) is used as a bending part for deformation of the valve block, and the deformation and opening angle of the valve block can still be ensured under the pressing effect of the jacking part.
3. A certain gap is reserved between the outer edge of the pressing part and the outer edge of the sunken part, so that a space for deformation of the valve block is formed, and the valve block cannot be blocked by the pressing part when being deformed and bent.
4. The bottom surface of each valve clack is provided with a closed sealing rib, or the outer ring of the water outlet corresponding to each valve clack is provided with a closed sealing rib, and compared with the prior art that the whole surface of the valve clack is tightly attached to a diaphragm chamber for sealing, the sealing rib is tightly attached to the diaphragm chamber for sealing, the requirement on the machining precision of the valve plate is lowered, and the fault tolerance rate is higher.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is a partially enlarged view of fig. 1.
Fig. 3 is a schematic view of the structure of the discharge valve of the present invention.
Fig. 4 is another structural view of the discharge valve of the present invention.
Fig. 5 is a perspective view of the pump head cover of the present invention.
FIG. 6 is a schematic diagram of the structure of the diaphragm chamber of the present invention.
FIG. 7 is a cross-sectional view of a diaphragm chamber of the present invention.
In the figure: 1. a discharge valve; 101. a recessed portion; 102. a valve flap; 103. a strip-shaped groove; 104. sealing the ribs; 105. a first limit boss; 106. a central column; 107. a second limit boss; 108. a space; 2. a pump head cover; 201. an annular projection; 202. a boss; 3. a diaphragm chamber; 301. a first limit groove; 302. a central bore; 303. a second limit groove; 304. a water outlet; 305. a support portion.
Detailed Description
The utility model is further described with reference to the following figures and detailed description.
As shown in fig. 1 to 7, a fixing structure of a discharge valve of a diaphragm booster pump according to the present embodiment includes:
a diaphragm housing 3 provided with a central aperture 302, and a number of water outlets 304 arranged around the central aperture 302; a support part 305 is formed between the central hole 302 and the water outlet 304;
a pump head cover 2 provided with a top pressing part;
a discharge valve 1 having a valve plate, and a center post 106 provided on the bottom surface of the valve plate; the central column 106 is arranged in the central hole 302, and the valve plate seals the water outlet 304;
the center of the top of the valve plate is inwards sunken to form a sunken part 101, and the jacking part is pressed on the sunken part. The utility model utilizes the jacking action of the jacking part on the valve plate and the tensioning action of the diaphragm chamber 3 on the neck part of the discharge valve 1 to ensure that the sealing performance between the discharge valve 1 and the diaphragm chamber 3 can be kept as before under the long-term work, thereby reducing the sealing performance attenuation under the long-term use and prolonging the service life. Meanwhile, due to the compression effect of the jacking portion, the deformation opening angle of the valve plate is reduced, and water outlet is affected; therefore, the center of the top of the valve plate is inwards sunken to form a sunken part 101, the jacking part is tightly pressed on the sunken part 101, the edge of the sunken part 101 (the joint part of the bottom surface of the sunken part and the top surface of the valve plate) is used as a bending part for deformation of the valve plate, and the deformation opening angle of the valve plate can still be ensured under the pressing action of the jacking part.
In order to facilitate the deformation and opening of the valve plate, a certain gap is left between the outer edge of the pressing portion and the outer edge of the recess 101 in this embodiment, so as to form a space 108 facilitating the deformation of the valve plate.
In a preferred embodiment, the bottom surface of the recess 101 is a flat surface, and the bottom surface is in smooth transition with the top surface of the valve plate through an arc surface. The bottom surface of the concave part 101 is a plane, so that the force applied to the discharge valve 1 by the jacking part is more uniform; meanwhile, the bottom surface is in smooth transition connection with the top surface of the valve plate through the cambered surface, so that the forming is convenient, and meanwhile, the stress concentration at the joint between the concave part 101 and the valve plate can be avoided.
As a preferred embodiment, the pressing portion includes an annular protrusion 201 coaxially arranged with the central hole 302, and a plurality of bosses 202 arranged around the annular protrusion 201 (the number and orientation of the bosses correspond to those of the water outlets one by one); the height of the boss 202 is higher than that of the annular protrusion 201 and is arranged corresponding to the support portion 305, and after the assembly is completed, the extrusion force applied to the valve sheet by the boss 202 is transmitted to the support portion 305, so that the sealing effect between the valve sheet and the diaphragm chamber 3 is better.
As a preferred embodiment, a first limiting boss 105 is arranged at the center of the bottom surface of the valve plate, and a second limiting boss 107 is arranged on the center post 106; a first limiting groove 301 matched with the first limiting boss 105 is formed at the top end of the central hole 302, and a second limiting groove 303 matched with the second limiting boss 107 is formed at the bottom end of the central hole; the first limiting boss 105 and the second limiting boss 107 are respectively embedded into the first limiting groove 301 and the second limiting groove 303, the exhaust valve 1 is fixed in the diaphragm chamber 3 by utilizing the upper and lower ends to limit and strain the exhaust valve 1, and the installation and long-term stable fixation of the exhaust valve 1 are realized.
The shape of the first limiting boss 105 is a regular polygon platform structure, the center column 106 is connected with the center of the first limiting boss 105, and the shape of the first limiting groove 301 is a regular polygon groove structure matched with the first limiting boss 105. In this example, the first limiting boss 105 has a square boss structure, and the first limiting groove 301 has a square groove structure.
The end, far away from the valve plate, of the second limiting boss 107 is of a circular truncated cone-shaped structure, and the inner wall, communicated with one end of the first limiting groove 301, of the central hole 302 is of a conical surface structure. When the discharge valve 1 is inserted and installed, the second limiting boss 107 is elastically deformed to pass through the central hole 302 and be clamped into the second limiting groove 303 on the other side by the matching of the conical surface structure and the circular truncated cone-shaped structure.
As a preferred embodiment, the valve plate is provided with a plurality of strip-shaped grooves 103 arranged in a radial shape, the valve plate is divided into a plurality of valve flaps 102, and each valve flap 102 corresponds to the water outlet 304 one by one.
In a preferred embodiment, a closed sealing rib 104 is provided on the bottom surface of each flap 102. Compared with the prior art that the whole face of the valve clack 102 is tightly attached and sealed with the diaphragm chamber 3, the sealing rib 104 is tightly attached to the diaphragm chamber 3 to realize sealing, the requirement on the machining precision of the valve plate is lowered, and the fault tolerance rate is higher.
In a preferred embodiment, the outer ring of the water outlet 304 corresponding to each valve flap 102 is provided with a closed sealing rib 104, and the sealing of the water outlet 304 is realized by the cooperation of the sealing rib 104 and the valve flap 102.
In a preferred embodiment, the bottom surface of the flap 102 is planar.
In a preferred embodiment, the thickness of the flap 102 decreases from the center to the edges.
When the water outlet 304 is opened for drainage, the water pressure only pushes the valve clack 102 at the position, and the boss 202 pushes the valve clack 102 close to the center of the discharge valve 1 from the upper part, so that the stable positioning of the center of the discharge valve 1 is maintained, the problem of looseness of the discharge valve 1 is relieved while drainage is considered, the long-time sealing effect is maintained, and the attenuation of the sealing performance of the diaphragm booster pump under long-term use is improved. In this example, there are four bar grooves 103 uniformly distributed on the valve plate, and four corners of the first limiting boss 105 are respectively disposed corresponding to the four bar grooves 103.
The above is only a preferred embodiment of the present invention, and the scope of the present invention is defined by the appended claims, and several modifications and amendments made by those skilled in the art without departing from the spirit and scope of the present invention should be construed as the scope of the present invention.
Claims (8)
1. A fixing structure of a discharge valve of a diaphragm pump, comprising:
a diaphragm chamber (3) provided with a central hole (302) and a plurality of water outlets (304) arranged around the central hole (302);
a pump head cover (2) provided with a top pressing part;
a discharge valve (1) having a valve plate and a center post (106) provided on the bottom surface of the valve plate; the central column (106) is arranged in the central hole (302), and the valve plate seals the water outlet (304);
the method is characterized in that: the center of the top of the valve plate is inwards sunken to form a sunken part (101), and the jacking part is pressed on the sunken part (101).
2. The fixing structure of the discharge valve of the diaphragm pump according to claim 1, characterized in that: a certain gap is reserved between the outer edge of the pressing part and the outer edge of the sunken part (101), and a space (108) facilitating deformation of the valve plate is formed.
3. The fixing structure of the discharge valve of the diaphragm pump according to claim 1, characterized in that: the bottom surface of the sunken part (101) is a plane, and the bottom surface is in smooth transition connection with the top surface of the valve plate through an arc surface.
4. The fixing structure of the discharge valve of the diaphragm pump according to claim 1, characterized in that: a plurality of strip-shaped grooves (103) which are radially arranged are formed in the valve plate, the valve plate is divided into a plurality of valve flaps (102), and the valve flaps (102) correspond to the water outlets (304) one by one.
5. The fixing structure of the discharge valve of the diaphragm pump according to claim 4, characterized in that: the bottom surface of each valve flap (102) is provided with a closed sealing rib (104).
6. The fixing structure of the discharge valve of the diaphragm pump according to claim 4, characterized in that: the outer ring of the water outlet (304) corresponding to each valve clack (102) is provided with a closed sealing rib (104).
7. The fixing structure of the discharge valve of the diaphragm pump according to claim 4, characterized in that: the bottom surface of the valve clack (102) is a plane.
8. The fixing structure of the discharge valve of the diaphragm pump according to claim 4, characterized in that: the valve flap (102) tapers in thickness from the center to the edges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220168768.XU CN216922469U (en) | 2022-01-21 | 2022-01-21 | Fixing structure of discharge valve of diaphragm pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220168768.XU CN216922469U (en) | 2022-01-21 | 2022-01-21 | Fixing structure of discharge valve of diaphragm pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216922469U true CN216922469U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220168768.XU Active CN216922469U (en) | 2022-01-21 | 2022-01-21 | Fixing structure of discharge valve of diaphragm pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216922469U (en) |
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2022
- 2022-01-21 CN CN202220168768.XU patent/CN216922469U/en active Active
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