A pump head structure using an umbrella-shaped valve sheet
By using the design of umbrella valve plate and fixed column in the pump head structure, the problem of difficult flow rate and vulnerability of the valve plate in the traditional pump head structure is solved, and the effect of increasing the pump head flow rate and extending the service life of the valve plate in a limited space is achieved.
Patent Information
- Application Number
- CN202421614373.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-07-09
AI Technical Summary
Due to the limited design space and limited size of the valve plate, the flow rate of the pump head is difficult to increase. At the same time, the valve plate is prone to depression in the middle due to excessive pressure, which affects the anti-rewind function and reduces service life.
The pump head structure adopts an umbrella valve plate, wherein the umbrella valve plate includes a circular gasket and a fixed column arranged vertically in the center. The circular gasket is fixed to the pump seat through the fixed column, which can close multiple air holes, increase the effective aperture, and thereby increase the flow rate of the pump head.
In a limited space, the flow rate of the pump head is increased, the thickness of the valve plate is reduced, so that it can withstand greater pressure, reduce operating noise and extend the service life of the valve plate.
Smart Images
Figure CN222717055U_ABST
Abstract
Description
[Technical field]
[0001] The utility model relates to the technical field of pumps, in particular to a pump head structure using an umbrella-shaped valve sheet. [Background technology]
[0002] The pump head valve is an important part of the pump, especially in plunger pumps, diaphragm pumps and certain types of gear pumps. Its main function is to control the flow of the fluid and prevent the fluid from flowing back during the suction and discharge process of the pump. Among them, the aperture of the pore is usually positively correlated with the flow rate of the pump head. When the aperture of a single pore is large, the pressure on the valve plate is large, which is prone to deformation such as depression in the middle, thereby affecting the anti-backflow function of the valve plate and reducing the service life of the valve plate. Therefore, the traditional pump head structure has limited design space, and the size of the valve plate is also limited accordingly, which makes it difficult to increase the flow rate of the pump head.
[0003] In addition, the traditional valve plate is usually fixed at one end and free at the other end, which can easily cause the two sides of the valve plate to bend too much during exhaust and even cause collision, making the valve plate easy to break and making a lot of noise during operation. Therefore, in order to solve this problem, the traditional valve plate is usually made very thick, which increases the cost.
[0004] In view of this, it is necessary to provide a pump head structure using an umbrella-shaped valve sheet to overcome the above-mentioned defects. [Contents of the utility model]
[0005] The purpose of the utility model is to provide a pump head structure with an umbrella-shaped valve plate, aiming to improve the problems of the existing pump head structure that the flow rate is difficult to increase and the valve plate is thick, and can increase the effective aperture, thereby increasing the pump head flow rate in a limited space. The thickness of the valve plate is thinner and can withstand greater pressure.
[0006] In order to achieve the above-mentioned object, the utility model provides a pump head structure using an umbrella-shaped valve sheet, comprising a pump seat and an umbrella-shaped valve sheet arranged on the pump seat;
[0007] The pump seat is provided with a fixing hole and a plurality of air holes spaced around the fixing hole;
[0008] The umbrella-shaped valve sheet includes a circular gasket and a fixing column vertically arranged at the center of the circular gasket, and the fixing column is used to adapt and fix with the fixing hole so that the circular gasket can unidirectionally close all the air holes surrounding the circumference of the fixing hole.
[0009] In a preferred embodiment, the pump seat is also provided with a first limiting groove corresponding to each fixing hole; the first limiting groove is cylindrical; the fixing hole and the corresponding air hole are both provided at the bottom of the corresponding first limiting groove; the umbrella-shaped valve sheet is accommodated in the first limiting groove.
[0010] In a preferred embodiment, a second limiting groove is further provided at the bottom of the first limiting groove; the cross-sectional area of the second limiting groove is smaller than the cross-sectional area of the first limiting groove; the fixing hole and the corresponding air hole both pass through the bottom of the second limiting groove.
[0011] In a preferred embodiment, the second limiting groove is conical, and the angle between the side wall and the bottom wall is 90°-100°.
[0012] In a preferred embodiment, the top of the side wall of the second limiting groove is chamfered or rounded.
[0013] In a preferred embodiment, the fixing hole extends outward from a side away from the umbrella-shaped valve disc to form a slot, and the cross-sectional area of the slot is larger than the cross-sectional area of the fixing hole; the fixing column extends outward from a side away from the umbrella-shaped valve disc to form a block adapted to the slot, and the block is used to cooperate with the slot to prevent the umbrella-shaped valve disc from detaching from the pump seat.
[0014] In a preferred embodiment, the pump seat includes a first pump block and a second pump block connected to each other; the first pump block is provided with a first chamber and a second chamber respectively connected to the outside; the number of the umbrella-shaped valve sheets and the corresponding fixing holes is two, and the two umbrella-shaped valve sheets control the unidirectional flow of the airflow in opposite directions; the two fixing holes are both provided on the second pump block, and the air holes corresponding to the two fixing holes are respectively connected to the first chamber and the second chamber.
[0015] In a preferred embodiment, the first pump block is further provided with a limiting column, and the limiting column is arranged corresponding to the circular gasket close to one side of the first pump block, so that the limiting column and the corresponding fixing column are located on the same straight line.
[0016] In a preferred embodiment, the limiting column is in a truncated cone shape, and the cross-sectional area of one end close to the circular gasket is smaller than the cross-sectional area of one end away from the circular gasket.
[0017] The utility model provides a pump head structure adopting an umbrella-shaped valve plate. By adopting the umbrella-shaped valve plate and fixing the middle part of the circular gasket on the pump seat through a fixing column, the peripheral side of the circular gasket can close multiple air holes on the peripheral side of the fixing hole, that is, one umbrella-shaped valve plate can control the gas flow of multiple air holes, thereby increasing the total effective aperture of the air holes in the pump head in quantity and correspondingly increasing the flow rate of the pump head. At the same time, the fixing column is arranged at the center of the circular gasket, which reduces the movable stroke of the peripheral side of the circular gasket, so that the circular gasket will not bend to a large extent or even cause a collision, thereby reducing the operating noise and increasing the service life of the umbrella-shaped valve plate.
Brief Description of the Drawings
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 A three-dimensional diagram of a pump head structure using an umbrella-shaped valve sheet provided by the utility model;
[0020] Figure 2 for Figure 1 A three-dimensional exploded view of a pump head structure using an umbrella-shaped valve plate;
[0021] Figure 3 for Figure 1 A longitudinal section of a pump head structure using an umbrella-shaped valve plate is shown;
[0022] Figure 4 for Figure 3 The enlarged schematic diagram of the part within circle A in the longitudinal section shown.
[0023] Reference numeral 100 in the figure, a pump head structure adopting an umbrella-shaped valve sheet;
[0024] 10. Pump seat; 101. Fixing hole; 102. Air hole; 103. First limiting groove; 104. Second limiting groove; 105. Card slot; 11. First pump block; 111. First chamber; 112. Second chamber; 12. Second pump block; 13. Limiting column;
[0025] 20. Umbrella-shaped valve disc; 21. Circular gasket; 22. Fixed column; 23. Block. [Specific implementation method]
[0026] In order to make the purpose, technical solution and beneficial technical effect of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described in this specification are only for explaining the utility model, and are not intended to limit the utility model.
[0027] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.
[0028] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.
[0029] In an embodiment of the utility model, a pump head structure 100 using an umbrella-shaped valve plate is provided to control the fluid flow direction of the pump device so that the fluid flows in a preset direction and prevents backflow, while maximizing the flow rate of the pump head within a limited design space.
[0030] like Figure 1-Figure 4 As shown, the pump head structure 100 using an umbrella-shaped valve sheet includes a pump seat 10 and an umbrella-shaped valve sheet 20 disposed on the pump seat 10 .
[0031] The pump base 10 is provided with a fixing hole 101 and a plurality of air holes 102 spaced around the fixing hole 101. Here, the air holes 102 may be circular holes. Therefore, the total effective aperture of the air holes 102 may be increased by increasing the number of the air holes 102 to increase the flow rate of the pump head.
[0032] Specifically, the umbrella-shaped valve disc 20 includes a circular gasket 21 and a fixing column 22 vertically disposed at the center of the circular gasket 21. In this embodiment, the thickness of the circular gasket 21 ranges from 0.3 mm to 0.4 mm, so that the same flow direction control as that of a traditional thicker valve disc can be achieved through a thinner valve disc.
[0033] The fixing column 22 is used to fit and fix with the fixing hole 101, so that the circular gasket 21 can unidirectionally close all the air holes 102 surrounding the fixing hole 101. That is, the vertical projection of the circular gasket 21 relative to the pump seat 10 can completely cover all the air holes 102. Therefore, an umbrella-shaped valve plate 20 can control the gas flow of multiple air holes 102, increase the total effective aperture of the air holes 102 in the pump head in quantity, and correspondingly increase the flow rate of the pump head; at the same time, the fixing column 22 is arranged at the center of the circular gasket 21, which reduces the movable stroke of the circular gasket 21, so that the circular gasket 21 will not bend to a large extent or even cause a collision, thereby reducing the operating noise.
[0034] Furthermore, the pump seat 10 is also provided with a first limiting groove 103 corresponding to each fixing hole 101. The first limiting groove 103 is cylindrical. The fixing hole 101 and its corresponding air hole 102 are both provided at the bottom of the corresponding first limiting groove 103. The circular gasket 21 is accommodated in the first limiting groove 103. The thickness of the circular gasket 21 is consistent with the height of the first limiting groove 103.
[0035] In this embodiment, a second limiting groove 104 is further provided at the bottom of the first limiting groove 103. The cross-sectional area of the second limiting groove 104 is smaller than the cross-sectional area of the first limiting groove 103. The fixing hole 101 and its corresponding air hole 102 both penetrate the bottom of the second limiting groove 104. When the edge of the circular gasket 21 is attached to the bottom of the first limiting groove 103, it is suspended from the bottom of the second limiting groove 104, forming a chamber structure for the circular gasket 21 to bend 102.
[0036] Furthermore, the second limiting groove 104 is conical, and the angle between its side wall and the bottom wall is 90°-100°. In this embodiment, the second limiting groove 104 is a cylindrical groove, that is, the side wall of the groove is perpendicular to the bottom wall, and is coaxially arranged with the first limiting groove 103. Among them, the top of the side wall of the second limiting groove 104 is chamfered or rounded to form a chamfered structure or a rounded structure to avoid large local stress on the circular gasket 21 when it is bent, thereby improving the service life of the circular gasket 21.
[0037] In one embodiment, the fixing hole 101 extends outwardly from one side away from the umbrella-shaped valve disc 20 to form a slot 105. The cross-sectional area of the slot 105 is larger than the cross-sectional area of the fixing hole 101. The fixing column 22 extends outwardly from one side away from the circular gasket 21 to form a block 23 adapted to the slot 105, and the block 23 is used to cooperate with the slot 105 to prevent the umbrella-shaped valve disc 20 from being separated from the pump seat 10.
[0038] In combination with the above embodiments, in some embodiments, the pump base 10 includes a first pump block 11 and a second pump block 12 connected to each other. The first pump block 11 is provided with a first chamber 111 and a second chamber 112 respectively connected to the outside. The number of the umbrella-shaped valve pieces 20 and their corresponding fixing holes 101 is two, and the two umbrella-shaped valve pieces 20 control the unidirectional flow of the airflow in opposite directions. Both fixing holes 101 are provided on the second pump block 12, and the air holes 102 corresponding to the two fixing holes 101 are respectively connected to the first chamber 111 and the second chamber 112.
[0039] Furthermore, the first pump block 11 is also provided with a limiting column 13, which is arranged corresponding to the circular gasket 21 near one side of the first pump block 11, so that the limiting column 13 and the corresponding fixing column 22 are located on the same straight line. When the circular gasket 21 bends along the limiting column 13, the surface of the limiting column 13 can limit the bending stroke of the circular gasket 21, thereby preventing the edge of the circular gasket 21 from bending too much. Of course, a limiting column 13 can also be arranged at a preset position of other parts to limit the bending of another circular gasket 21.
[0040] The limiting column 13 is in a truncated cone shape, and the cross-sectional area of the end close to the circular gasket 21 is smaller than the cross-sectional area of the end away from the circular gasket 21 , so as to better fit the shape of the circular gasket 21 when it is bent.
[0041] In summary, the pump head structure 100 with an umbrella-shaped valve plate provided by the utility model adopts an umbrella-shaped valve plate 20 and fixes the middle part of the circular gasket 21 on the pump seat 10 through a fixing column 22, so that the peripheral side of the circular gasket 21 can close the multiple air holes 102 on the peripheral side of the fixing hole 101, that is, one umbrella-shaped valve plate 20 can control the gas flow of multiple air holes 102, thereby increasing the total effective aperture of the air holes 102 in the pump head in quantity, and correspondingly increasing the flow rate of the pump head; at the same time, the fixing column 22 is arranged at the center of the circular gasket 21, which reduces the movable stroke of the peripheral side of the circular gasket 21, so that the circular gasket 21 will not bend to a large extent or even cause a collision, thereby reducing the operating noise and increasing the service life of the umbrella-shaped valve plate 20.
[0042] The present invention is not limited to what is described in the specification and implementation modes, and therefore, additional advantages and modifications can be easily realized by those familiar with the art. Therefore, without departing from the spirit and scope of the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details, representative devices, and illustrative examples shown and described herein.
Claims
1. A pump head structure using an umbrella-shaped valve sheet, characterized in that: It comprises a pump seat and an umbrella-shaped valve sheet arranged on the pump seat; The pump seat is provided with a fixing hole and a plurality of air holes spaced around the fixing hole; The umbrella-shaped valve sheet includes a circular gasket and a fixing column vertically arranged at the center of the circular gasket, and the fixing column is used to adapt and fix with the fixing hole so that the circular gasket can unidirectionally close all the air holes surrounding the circumference of the fixing hole.
2. The pump head structure using an umbrella-shaped valve sheet as claimed in claim 1, characterized in that: The pump seat is also provided with a first limiting groove corresponding to each fixing hole; the first limiting groove is cylindrical; the fixing hole and the corresponding air hole are both provided at the bottom of the corresponding first limiting groove; the umbrella-shaped valve sheet is accommodated in the first limiting groove.
3. The pump head structure using an umbrella-shaped valve sheet as claimed in claim 2, characterized in that: A second limiting groove is also provided at the bottom of the first limiting groove; the cross-sectional area of the second limiting groove is smaller than the cross-sectional area of the first limiting groove; the fixing hole and the corresponding air hole both pass through the bottom of the second limiting groove.
4. The pump head structure using an umbrella-shaped valve sheet as claimed in claim 3, characterized in that: The second limiting groove is conical, and the angle between the side wall and the bottom wall is 90°-100°.
5. The pump head structure using an umbrella-shaped valve sheet as claimed in claim 4, characterized in that: The top of the side wall of the second limiting groove is chamfered or rounded.
6. The pump head structure using an umbrella-shaped valve sheet as claimed in claim 1, characterized in that: The fixing hole extends outward from one side away from the umbrella-shaped valve disc to form a slot, and the cross-sectional area of the slot is larger than the cross-sectional area of the fixing hole; the fixing column extends outward from one side away from the umbrella-shaped valve disc to form a block adapted to the slot, and the block is used to cooperate with the slot to prevent the umbrella-shaped valve disc from detaching from the pump seat.
7. The pump head structure using an umbrella-shaped valve sheet as claimed in claim 1, characterized in that: The pump seat includes a first pump block and a second pump block connected to each other; the first pump block is provided with a first chamber and a second chamber respectively connected to the outside; the number of the umbrella-shaped valve sheets and the corresponding fixing holes is two, and the two umbrella-shaped valve sheets control the unidirectional flow of the airflow in opposite directions; the two fixing holes are both provided on the second pump block, and the air holes corresponding to the two fixing holes are respectively connected to the first chamber and the second chamber.
8. The pump head structure using an umbrella-shaped valve sheet as claimed in claim 7, characterized in that: The first pump block is further provided with a limiting column, and the limiting column is arranged corresponding to the circular gasket close to one side of the first pump block, so that the limiting column and the corresponding fixing column are located on the same straight line.
9. The pump head structure using an umbrella-shaped valve sheet as claimed in claim 8, characterized in that: The limiting column is in a truncated cone shape, and the cross-sectional area of one end close to the circular gasket is smaller than the cross-sectional area of one end away from the circular gasket.