Pressure relief device and air pump

Abstract

An embodiment of the utility model discloses a pressure relief device and an air pump, and relates to the technical field of inflation equipment, the pressure relief device comprises a cylinder cover, an elastic piece, a pressure relief shaft, a sealing block and a pressing plate, the cylinder cover is provided with a mounting groove, the bottom wall of the mounting groove is provided with a through hole, and the pressing plate is provided with a pressure relief air hole; the pressing plate covers the mounting groove in a sealing manner, one end of the pressure relief shaft extends into the mounting groove, and the other end of the pressure relief shaft penetrates through the pressure relief air hole and extends to the outer side of the pressing plate; the elastic piece is arranged between the pressure relief shaft and the bottom wall of the mounting groove, and the sealing block is fixed on the pressure relief shaft; by means of the elastic force of the elastic piece, the sealing block abuts against the pressing plate so as to seal the gap between the pressure relief shaft and the pressure relief air hole. According to the air pump, the pressure relief device is designed on the air cylinder cover of the air pump, the sealing block is driven to be separated from the pressing plate by pressing the pressure relief shaft, and therefore the pressure relief function is achieved, and compared with the mode that an air pipe or an air nozzle is adopted for pressure relief, the pressure relief device is integrally arranged on the whole machine, so that the air pump has the advantage of being convenient to operate and free of the risk of losing.

Description

Technical Field

[0001] This utility model relates to the field of inflation equipment technology, and in particular to a pressure relief device and an air pump. Background Technology

[0002] In the field of pneumatic equipment applications, the pressure relief function of an air pump is a core technical aspect ensuring the safe operation of the equipment. Existing pressure relief solutions generally adopt an external design concept, that is, configuring an independent air pipe or nozzle with pressure relief function as an auxiliary component outside the air pump body. While this technical approach achieves pressure release at the basic functional level, it has gradually revealed systemic defects in practical applications, restricting the functional integrity of the air pump equipment and the user experience.

[0003] From a structural design perspective, the existing pressure relief device is physically separate from the air pump body. The pressure relief module is not organically integrated with the main air pump structure, but exists as a detachable component. This separate architecture directly leads to two problems: First, users need to temporarily connect the components when performing pressure relief operations, adding an extra equipment assembly step and disrupting the operational continuity of the air pump system. Second, the lack of a stable mechanical positioning structure between the independent components and the main unit makes the connection prone to loosening under vibration conditions, affecting the controllability of the pressure relief process. Third, there is a risk that the independent air hose or nozzle for relieving pressure may be easily lost.

[0004] In terms of ease of operation, the external pressure relief design significantly increases the complexity of use. Operators not only need to accurately identify the specifications and models of the parts, but also need to master specific connection techniques to complete the pressure relief operation. Especially in emergency pressure relief scenarios, the steps of searching for parts, installing and debugging will greatly prolong the operation response time, and may cause the optimal pressure adjustment window to be missed. Utility Model Content

[0005] This utility model provides a pressure relief device and an air pump, which aims to solve at least one of the technical problems in the background art.

[0006] To address the aforementioned problems, in a first aspect, this utility model provides a pressure relief device, comprising a cylinder head, an elastic element, a pressure relief shaft, a sealing block, and a pressure plate. The cylinder head has a mounting groove with a through hole in its bottom wall, and the pressure plate has a pressure relief vent. The pressure plate seals and covers the mounting groove. One end of the pressure relief shaft extends into the mounting groove, and the other end of the shaft extends through the pressure relief vent to the outside of the pressure plate. The elastic element is disposed between the pressure relief shaft and the bottom wall of the mounting groove, and the sealing block is fixed to the pressure relief shaft. By means of the elastic force of the elastic element, the sealing block abuts against the pressure plate to seal the gap between the pressure relief shaft and the pressure relief vent. Furthermore, by applying force to the pressure relief shaft, the sealing block separates from the pressure plate.

[0007] A further technical solution is that the side wall of the pressure relief shaft is provided with a groove, and the sealing block is located in the groove.

[0008] A further technical solution is that the sealing block has a central hole, the pressure relief shaft passes through the central hole of the sealing block, and the inner side of the sealing block is embedded in the slot.

[0009] A further technical solution is that a limiting block protrudes from the side wall of the pressure relief shaft, and the limiting block limits the elastic element.

[0010] A further technical solution is that one end of the elastic element is sleeved on the pressure relief shaft and abuts against the limiting block; the other end of the elastic element abuts against the bottom wall of the mounting groove.

[0011] A further technical solution is that the elastic element is fixedly mounted on the pressure relief shaft and abuts against the bottom wall of the mounting groove.

[0012] A further technical solution is that the outer periphery of the opening of the mounting groove is provided with a groove, and the pressure relief device also includes a sealing ring, which is disposed in the groove and pressed between the cylinder head and the pressure plate.

[0013] A further technical solution is that the cylinder head and the pressure plate are fixed together by fasteners.

[0014] A further technical solution is that the number of fasteners is multiple.

[0015] Secondly, this utility model provides an air pump, which includes the pressure relief device as described in the first aspect.

[0016] Compared with the prior art, the technical effects achieved by the embodiments of this utility model include:

[0017] This utility model provides a pressure relief device, including a cylinder head, an elastic element, a pressure relief shaft, a sealing block, and a pressure plate. The cylinder head has a mounting groove with a through hole in the bottom wall of the mounting groove. The pressure plate has a pressure relief vent. The pressure plate seals and covers the mounting groove. One end of the pressure relief shaft extends into the mounting groove, and the other end extends through the pressure relief vent to the outside of the pressure plate. The elastic element is located between the pressure relief shaft and the bottom wall of the mounting groove, and the sealing block is fixed to the pressure relief shaft. Due to the elastic force of the elastic element, the sealing block abuts against the pressure plate to seal the gap between the pressure relief shaft and the pressure relief vent. The pressure relief device is designed on the cylinder head of the air pump. By pressing the pressure relief shaft, the sealing block is disengaged from the pressure plate, thereby achieving the pressure relief function. Compared to using air pipes or nozzles for pressure relief, the pressure relief device, being integrated into the entire machine, offers the advantages of convenient operation and eliminates the risk of loss. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0021] Figure 1 An exploded view of a pressure relief device proposed in an embodiment of this utility model;

[0022] Figure 2 This is a schematic diagram of the cylinder head structure of a pressure relief device proposed in an embodiment of the present invention;

[0023] Figure 3 This is an exploded view of a pressure relief device according to another embodiment of the present invention.

[0024] Figure Labels

[0025] Cylinder head 1, elastic element 2, pressure relief shaft 3, sealing block 4, pressure plate 5, sealing ring 6, fastener 7, screw hole 8, mounting groove 11, through hole 12, groove 13, limit block 31, slot 32, pressure relief hole 51. Detailed Implementation

[0026] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Similar component reference numerals in the drawings represent similar components. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0028] It should also be understood that the terminology used in this specification of embodiments of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of the present invention. As used in this specification of embodiments of the present invention and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0029] See Figures 1-3 This utility model embodiment proposes a pressure relief device, which is designed on the cylinder head 1 of the air pump. By pressing the pressure relief shaft 3, the sealing block 4 is driven to disengage from the pressure plate 5, thereby achieving the pressure relief function. Compared with the method of using air pipes or air nozzles for pressure relief, since the pressure relief device is integrated into the whole machine, it has the advantages of convenient operation and no risk of loss. To achieve the above technical objectives, the pressure relief device includes a cylinder head 1, an elastic element 2, a pressure relief shaft 3, a sealing block 4, and a pressure plate 5, the specific structure of which is described below:

[0030] The cylinder head 1 is the cover of the air pump cylinder. The cylinder head 1 is provided with a mounting groove 11, and the bottom wall of the mounting groove 11 is provided with a through hole 12. The through hole 12 communicates with the air pump cylinder, and other contents of the cylinder can flow out through the through hole 12.

[0031] The pressure plate 5 has a pressure relief hole 51; the pressure relief hole 51 is used for pressure relief. The pressure plate 5 seals and covers the mounting groove 11 to prevent air leakage.

[0032] One end of the pressure relief shaft 3 extends into the mounting groove 11, and the other end of the pressure relief shaft 3 extends out to the outside of the pressure plate 5 through the pressure relief vent 51; the elastic element 2 is disposed between the pressure relief shaft 3 and the bottom wall of the mounting groove 11, and the sealing block 4 is fixed on the pressure relief shaft 3. A distance is reserved between the pressure relief shaft 3 and the bottom wall of the mounting groove 11 so that the pressure relief shaft 3 can compress the elastic element 2 downward.

[0033] Using the elastic force of the elastic element 2, the sealing block 4 abuts against the pressure plate 5 to seal the gap between the pressure relief shaft 3 and the pressure relief vent 51, thereby achieving a reliable seal. Specifically, by applying force to the pressure relief shaft 3, the sealing block 4 separates from the pressure plate 5. The sealing block 4 is located on the lower side of the pressure plate 5. By pressing down on the pressure relief shaft 3, the elastic element 2 contracts, and the sealing block 4 separates from the pressure plate 5. At this time, the gas in the cylinder can flow out from the gap between the pressure relief shaft 3 and the pressure relief vent 51, thereby achieving pressure relief.

[0034] This utility model's pressure relief device integrates the core functional modules onto the cylinder head 1 of the air pump, achieving a triple optimization of structure, function, and operation, fundamentally solving the technical defects of traditional external pressure relief solutions. In terms of structural integration, the innovative layout of the pressure relief shaft 3, sealing block 4, and pressure plate 5 achieves physical fusion of the pressure relief mechanism and the air pump body, eliminating the problem of component separation from the main unit in traditional solutions. This integrated design enhances the precision of the fit between moving parts through mechanical coupling, ensuring precise displacement control of the sealing block 4 when the pressing pressure changes, significantly improving the consistency of the pressure relief response.

[0035] In terms of ease of operation, the push-button direct-drive mechanism restructures the human-machine interaction logic. Operators can directly trigger the pressure relief process with a single axial press, eliminating the redundant steps of traditional solutions such as parts searching, interface alignment, and pipe connections. This simplified operation significantly lowers the technical barrier for users, especially in emergency pressure relief scenarios, allowing for rapid completion of critical operations through tactile positioning, avoiding system risks caused by operational delays. More fundamentally, the integrated structural design completely eliminates the possibility of lost parts, making pressure relief an inherent attribute of the air pump equipment, ensuring that the equipment maintains full functional status throughout its entire lifecycle.

[0036] This utility model embodiment proposes a pressure relief device, including a cylinder head 1, an elastic element 2, a pressure relief shaft 3, a sealing block 4, and a pressure plate 5. The cylinder head 1 is provided with a mounting groove 11, and the bottom wall of the mounting groove 11 is provided with a through hole 12. The pressure plate 5 has a pressure relief hole 51. The pressure plate 5 seals and covers the mounting groove 11. One end of the pressure relief shaft 3 extends into the mounting groove 11, and the other end of the pressure relief shaft 3 passes through the pressure relief hole 51 and extends to the outside of the pressure plate 5. The elastic element 2 is disposed between the pressure relief shaft 3 and the bottom wall of the mounting groove 11, and the sealing block 4 is fixed on the pressure relief shaft 3. By means of the elastic force of the elastic element 2, the sealing block 4 abuts against the pressure plate 5 to seal the gap between the pressure relief shaft 3 and the pressure relief hole 51. The pressure relief device is designed on the cylinder head 1 of the air pump. By pressing the pressure relief shaft 3, the sealing block 4 is driven to disengage from the pressure plate 5, thereby realizing the pressure relief function. Compared with the method of using air pipes or air nozzles for pressure relief, since the pressure relief device is integrated into the whole machine, it has the advantages of convenient operation and no risk of loss.

[0037] Furthermore, in some embodiments, such as this embodiment, a limiting block 31 protrudes from the side wall of the pressure relief shaft 3, and the limiting block 31 limits the elastic element 2. The limiting block 31 can be integrally formed with the pressure relief shaft 3, and reliable limiting of the elastic element 2 can be achieved through the limiting block 31.

[0038] Specifically, one end of the elastic element 2 is sleeved on the pressure relief shaft 3 and abuts against the limiting block 31; the other end of the elastic element 2 abuts against the bottom wall of the mounting groove 11.

[0039] For example, the elastic element 2 can be a spring.

[0040] Or, refer to Figure 3 In some other embodiments, the elastic element 2 is fixedly mounted on the pressure relief shaft 3 and abuts against the bottom wall of the mounting groove 11.

[0041] Specifically, the elastic element 2 and the pressure relief shaft 3 are fixed as a whole, and the elastic element 2 can be fixedly disposed on the lower side of the limiting block 31. For example, the elastic element 2 and the pressure relief shaft can be fixed as a whole by fasteners, or the elastic element 2 and the pressure relief shaft 3 can be integrally formed. This utility model does not specifically limit the specific application of this method.

[0042] Furthermore, in some embodiments, such as this embodiment, the side wall of the pressure relief shaft 3 is provided with a groove 32, and the sealing block 4 is disposed at the groove 32.

[0043] Furthermore, the sealing block 4 has a central hole; for example, the sealing block 4 can be annular, and the pressure relief shaft 3 passes through the central hole of the sealing block 4. Simultaneously, the inner side of the sealing block 4 is embedded in the slot 32, thereby reliably fitting and fixing the sealing block 4 to the slot 32.

[0044] The sealing block 4 may have a certain degree of elasticity, so that the inner side of the sealing block 4 can be compressed within the slot 32, further improving the reliability of the fixation.

[0045] Furthermore, in some embodiments, such as this embodiment, the outer periphery of the opening of the mounting groove 11 is provided with a groove 13, and the pressure relief device further includes a sealing ring 6, which is disposed in the groove 13 and pressed between the cylinder head 1 and the pressure plate 5.

[0046] By tightening the sealing ring 6, the gap between the cylinder head 1 and the pressure plate 5 can be effectively sealed, thereby achieving a reliable seal.

[0047] Furthermore, in some embodiments, such as this embodiment, the cylinder head 1 and the pressure plate 5 are fixed together by fasteners 7. There are multiple fasteners 7.

[0048] Specifically, the fastener 7 can be a screw, and the cylinder head 1 and the pressure plate 5 are respectively provided with screw holes 8. The screws are screwed into the screw holes 8 on the pressure plate 5 and the cylinder head 1 in sequence, thereby reliably fixing the pressure plate 5 and the cylinder head 1.

[0049] This utility model provides an air pump, which includes the pressure relief device described in any of the above embodiments.

[0050] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0051] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0056] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0057] The above description describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A pressure relief device, characterized in that, The pressure relief device comprises a cylinder cover, an elastic member, a pressure relief shaft, a sealing block and a pressing plate. The cylinder cover is provided with a mounting groove, the bottom wall of the mounting groove is provided with a through hole, and the pressing plate is provided with a pressure relief hole. The pressing plate is sealed on the mounting groove, one end of the pressure relief shaft extends into the mounting groove, the other end of the pressure relief shaft extends out of the pressing plate through the pressure relief hole, the elastic member is arranged between the pressure relief shaft and the bottom wall of the mounting groove, and the sealing block is fixed on the pressure relief shaft. The sealing block abuts against the pressing plate to seal the gap between the pressure relief shaft and the pressure relief hole by the elastic force of the elastic member. The sealing block is separated from the pressing plate by applying force to the pressure relief shaft.

2. The pressure relief device of claim 1, wherein, The side wall of the pressure relief shaft is provided with a clamping groove, and the sealing block is arranged at the clamping groove.

3. The pressure relief device of claim 2, wherein, The sealing block is provided with a center hole, the pressure relief shaft passes through the center hole of the sealing block, and the inner side of the sealing block is embedded in the clamping groove.

4. The pressure relief device of claim 1, wherein, The side wall of the pressure relief shaft is provided with a limiting block, and the limiting block limits the elastic member.

5. The pressure relief device of claim 2, wherein, One end of the elastic member is sleeved on the pressure relief shaft and abuts against the limiting block, and the other end of the elastic member abuts against the bottom wall of the mounting groove.

6. The pressure relief device of claim 1, wherein, The elastic member is fixed on the pressure relief shaft and abuts against the bottom wall of the mounting groove.

7. The pressure relief device of claim 1, wherein The outer periphery of the opening of the mounting groove is provided with a groove, and the pressure relief device further comprises a sealing ring arranged in the groove and pressed between the cylinder cover and the pressing plate.

8. The pressure relief device of claim 1, wherein, The cylinder cover and the pressing plate are fixed by fasteners.

9. The pressure relief device of claim 8, wherein, The number of fasteners is multiple.

10. A gas pump characterized by The air pump comprises the pressure relief device according to any one of claims 1-9.

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