Direct-acting pressing type mechanical valve

Abstract

The utility model discloses a direct-acting pressing type mechanical valve which comprises a valve body, a valve cavity is formed in the valve body, a valve rod is arranged in the valve cavity, a rear cover is integrally arranged at the rear end of the valve body, a pressing assembly is arranged at the front end of the valve body, and the pressing assembly comprises a mounting seat fixedly connected with the front end of the valve body. The rear cover and the valve body are integrally formed, and the front cover is replaced by the mounting seat in the pressing assembly, so that accessories are effectively reduced, the cost is reduced, and the mounting efficiency is improved; the concentricity problem between the rear cover and the valve body does not need to be considered, machining is simpler, and the installation efficiency and the production qualification rate are effectively improved; meanwhile, the rear cover and the valve body are integrally formed, so that the air tightness of the mechanical valve is higher, the compression resistance effect of the rear cover is better, and the service life of the valve body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical valves, and particularly relates to a direct-acting pressing mechanical valve. Background Art

[0002] The structure of the pressing mechanical valve is simple, and the switching of the air path can be achieved through a simple pressing action. Therefore, the pressing mechanical valve is widely used in industrial production.

[0003] For the common mechanical valves on the market at present, their structures usually include a valve body and a valve stem. The two ends of the valve body are respectively provided with a front cover and a rear cover. An installation cavity is formed in the valve body, and the valve stem is adaptively arranged in the installation cavity of the valve body. The front end of the valve stem passes through the front cover and extends out of the valve body. However, since the front cover and the rear cover of the above-mentioned mechanical valve are separately arranged from the valve body, the number of required accessories is increased, the cost is increased, and the installation efficiency is reduced. Moreover, the concentricity requirements between the front cover and the rear cover and the valve body are relatively high, resulting in greater processing difficulty and lower product qualification rate. Furthermore, the split setting makes the sealing performance of the mechanical valve low, and air leakage is likely to occur. In addition, the installation connection positions between the valve body and the front cover and the rear cover are easily loosened under the long-term impact of air pressure and the valve stem, reducing the overall service life of the mechanical valve.

[0004] Therefore, it is necessary to improve the existing technology. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a direct-acting pressing mechanical valve aiming at the defects and deficiencies of the existing technology. The rear cover of the valve is integrally arranged with the valve body, and the front cover is replaced by the installation seat in the pressing assembly, reducing the number of required accessories, lowering the cost, improving the assembly efficiency, and the integral setting of the rear cover and the valve body enhances the impact resistance of the valve body and prolongs the service life of the valve body.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A direct-acting pressing mechanical valve includes a valve body. A valve cavity is formed in the valve body. A valve stem is arranged in the valve cavity. A rear cover is integrally arranged at the rear end of the valve body. A pressing assembly is arranged at the front end of the valve body. The pressing assembly includes an installation seat fixedly connected to the front end of the valve body and a swing pressing plate swingably connected to the installation seat. The front end of the valve stem extends out of the installation seat and triggers cooperation with the swing pressing plate. An elastic member is provided between the rear end of the valve stem and the rear cover. The elastic member makes the valve stem always have a movement tendency to extend out of the installation seat.

[0008] Further, an air inlet, a working port A, and a working port B are formed on the valve body. The valve stem has a first working position and a second working position. When the valve stem is in the first working position, the air inlet is communicated with the working port A; when the valve stem is in the second working position, the air inlet is communicated with the working port B.

[0009] Further, the swing pressure plate has a third working position and a fourth working position. When the swing pressure plate is in the third working position, the swing pressure plate is disengaged from the trigger cooperation with the valve stem, and at this time the valve stem is in the first working position; when the swing pressure plate is in the fourth working position, the swing pressure plate is in trigger cooperation with the valve stem, and at this time the valve stem is in the second working position.

[0010] Further, a cylindrical protrusion for trigger cooperation with the valve stem is provided at the lower end of the swing pressure plate.

[0011] Further, the first end of the swing pressure plate is swingably connected to the mounting seat through a rotating shaft, and a roller is provided at the second end of the swing pressure plate.

[0012] Further, when the swing pressure plate is in the third position, the included angle between the swing pressure plate and the mounting seat is 22° - 24°.

[0013] Further, the elastic member is a return spring.

[0014] Further, a plurality of sealing rings are provided between the valve stem and the inner wall of the valve cavity.

[0015] Further, a positioning retaining ring is provided between the mounting seat and the valve body.

[0016] Further, a through hole for the valve stem to pass through is provided at the center of the mounting seat.

[0017] After adopting the above structure, the beneficial effects of the present utility model are as follows: A direct-acting pressing mechanical valve of the present utility model includes a valve body. A valve cavity is formed in the valve body, and a valve stem is provided in the valve cavity. A rear cover is integrally provided at the rear end of the valve body, and a pressing assembly is provided at the front end of the valve body. The pressing assembly includes a mounting seat fixedly connected to the front end of the valve body. The rear cover is integrally formed with the valve body, and the front cover is replaced by the mounting seat in the pressing assembly, effectively reducing the number of parts, lowering the cost, and improving the installation efficiency; and there is no need to consider the concentricity between the rear cover and the valve body, and the processing is simpler, effectively improving the installation efficiency and production qualification rate; at the same time, the rear cover is integrally formed with the valve body, which not only makes the airtightness of the mechanical valve stronger, but also makes the compressive effect of the rear cover better, thereby extending the service life of the valve body. Description of the Drawings

[0018] To more clearly illustrate the specific embodiments of the present utility model, the following will briefly introduce the drawings required for use in the description of the specific embodiments. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is the schematic diagram of the overall structure of the present utility model Figure 1 ;

[0020] Figure 2 is the sectional view of the overall structure of the present utility model Figure 1 (the swing pressing plate is in the third position and the valve stem is in the first position);

[0021] Figure 3 is the sectional view of the overall structure of the present utility model Figure 2 (the swing pressing plate is in the fourth position and the valve stem is in the second position);

[0022] Figure 4 is the schematic diagram of the overall structure of the present utility model Figure 2 .

[0023] Figures 1 to 4 The reference numerals in the figure are:

[0024] 1. Valve body; 11. Air inlet; 12. Working port A; 13. Working port B; 2. Valve cavity; 3. Valve stem; 31. Sealing ring; 4. Rear cover; 5. Elastic member; 6. Pressing assembly; 61. Mounting seat; 62. Swing pressing plate; 621. Cylindrical protrusion; 622. Rotating shaft; 623. Roller; 7. Positioning retaining ring. Specific embodiments

[0025] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will provide a detailed description of the specific embodiments of the present utility model with reference to the drawings. Many specific details are set forth in the following description to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0026] In the description of the present utility model, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0027] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0028] In the present utility model, unless otherwise clearly specified and limited, if there are terms such as "installation", "connection", "connection", "fixation", etc., these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, if there is a description such as the first feature being "above" or "below" the second feature, etc., the meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0030] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the present invention are only for the purpose of illustration and do not represent the only implementation.

[0031] It should be noted that without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0032] As Figures 1 to 4 shown, a direct-acting pressing mechanical valve includes a valve body 1, a valve cavity 2 is formed in the valve body 1, a valve stem 3 is disposed in the valve cavity 2, a rear cover 4 is integrally provided at the rear end of the valve body 1, and a pressing assembly 6 is provided at the front end of the valve body 1. The pressing assembly 6 includes a mounting seat 61 fixedly connected to the front end of the valve body 1 and a swing pressing plate 62 swingably connected to the mounting seat 61. The front end of the valve stem 3 extends out of the mounting seat 61 and triggers cooperation with the swing pressing plate 62. An elastic member 5 is disposed between the rear end of the valve stem 3 and the rear cover 4. The elastic member 5 makes the valve stem 3 always have a tendency to extend out of the mounting seat 61. An air inlet 11, a working port A 12 and a working port B 13 are formed on the valve body 1. The valve stem 3 has a first working position and a second working position. When the valve stem 3 is in the first working position, the air inlet 11 is communicated with the working port A 12. When the valve stem 3 is in the second working position, the air inlet 11 is communicated with the working port B 13. The swing pressing plate 62 has a third working position and a fourth working position. When the swing pressing plate 62 is in the third working position, the swing pressing plate 62 is disengaged from the trigger cooperation with the valve stem 3, and at this time the valve stem 3 is in the first working position. When the swing pressing plate 62 is in the fourth working position, the swing pressing plate 62 triggers cooperation with the valve stem 3, and at this time the valve stem 3 is in the second working position. The elastic member 5 is a return spring. A through hole for the valve stem 3 to pass through is provided at the center of the mounting seat 61.

[0033] Based on the above embodiments, the utility model aims to provide a direct-acting pressing mechanical valve, which includes a valve body 1. A valve cavity 2 is formed in the valve body 1, and a valve rod 3 is arranged in the valve cavity 2. A rear cover 4 is integrally provided at the rear end of the valve body 1, and a pressing assembly 6 is arranged at the front end of the valve body 1. The pressing assembly 6 includes a mounting seat 61 fixedly connected to the front end of the valve body 1. The rear cover 4 is integrally formed with the valve body 1, and the front cover is replaced by the mounting seat 61 in the pressing assembly 6, effectively reducing the number of parts, lowering the cost, and improving the installation efficiency. Moreover, there is no need to consider the concentricity between the rear cover 4 and the valve body 1, making the processing simpler, effectively improving the installation efficiency and production qualification rate. At the same time, the rear cover 4 is integrally formed with the valve body 1, not only making the airtightness of the mechanical valve stronger, but also making the compressive effect of the rear cover 4 better, thereby extending the service life of the valve body 1. In this embodiment, a through hole for the valve rod 3 to pass through is provided at the center of the mounting seat 61. As Figure 2 and Figure 3 shown, the through hole should be concentrically arranged with the valve body 1, and the setting of the through hole provides an avoidance for the extension and retraction of the valve rod 3.

[0034] During use, when the swing pressing plate 62 is in the third working position, the swing pressing plate 62 is disengaged from the trigger cooperation with the valve rod 3. At this time, the valve rod 3 is in the first working position, that is, the air inlet 11 is communicated with the working port A12. When the swing pressing plate 62 is in the fourth working position, here, we can drive the swing pressing plate 62 to rotate downward through other driving mechanisms, or drive the swing pressing plate 62 to rotate downward by manual pressing, so that the swing pressing plate 62 triggers the cooperation with the valve rod 3. At this time, the valve rod 3 is in the second working position, that is, the air inlet 11 is communicated with the working port B13. In this way, the swing pressing plate 62 realizes intermittent trigger cooperation with the valve rod 3 through swinging, thereby realizing the switching communication between the air inlet 11 and the working port A12 or the working port B13 respectively, that is, realizing the switching of the air path. In this embodiment, an elastic member 5 is provided between the rear end of the valve rod 3 and the rear cover 4. The elastic member 5 makes the valve rod 3 always have a movement tendency to extend out of the mounting seat 61, and the elastic member 5 is a return spring. As Figure 2 and Figure 3 shown, when the swing pressing plate 62 is not under driving force, the valve rod 3 moves upward under the elastic force of the return spring and extends out of the mounting seat 61, so that the valve rod 3 moves from the second working position to the first working position.

[0035] As another preferred solution of the utility model, a cylindrical protrusion 621 for triggering cooperation with the valve rod 3 is provided at the lower end of the swing pressing plate 62. In this embodiment, as Figure 2 and Figure 3As shown, the provision of the cylindrical protrusion 621 reduces the requirement for the installation accuracy of the swing pressure plate 62. Meanwhile, the design of the cylindrical protrusion 621 increases the thickness of the contact part between the swing pressure plate 62 and the valve stem 3, avoiding damage to the swing pressure plate 62 due to wear and extending the service life of the swing pressure plate 62.

[0036] As another preferred solution of the present utility model, the first end of the swing pressure plate 62 is swingably connected to the mounting seat 61 through a rotating shaft 622, and a roller 623 is provided at the second end of the swing pressure plate 62. In this embodiment, as Figure 1 and Figure 2 shown, the provision of the rotating shaft 622 provides a pivot point for the rotation of the swing pressure plate 62. In other preferred embodiments, a triggering method in which the roller 623 rolls laterally to press down the valve stem 3 can also be adopted.

[0037] As another preferred solution of the present utility model, when the swing pressure plate 62 is in the third position, the included angle between the swing pressure plate 62 and the mounting seat 61 is 22° - 24°. In this embodiment, as Figure 2 and Figure 3 shown, when the swing pressure plate 62 is in the third position, the included angle between the swing pressure plate 62 and the mounting seat 61 should meet the condition for the swing pressure plate 62 to disengage from the valve stem 3 for triggering. At the same time, in order to reduce the rotation stroke of the swing pressure plate 62, the angle should not be set too large. In this embodiment, the preferred angle of the included angle between the swing pressure plate 62 and the mounting seat 61 is 22°.

[0038] Furthermore, as another preferred solution of the present utility model, a plurality of sealing rings 31 are provided between the valve stem 3 and the inner wall of the valve cavity 2. In this embodiment, as Figure 2 and Figure 3 shown, the sealing rings 31 are embedded on the peripheral wall of the valve stem 3 and cooperate with the inner wall of the valve cavity 2 to realize the switching of the gas path as the valve stem 3 moves.

[0039] As another preferred solution of the present utility model, a positioning retaining ring 7 is provided between the mounting seat 61 and the valve body 1. In this embodiment, as Figure 2 and Figure 3 shown, the positioning retaining ring 7 is used to improve the coaxiality between the valve stem 3 and the through hole and guide the movement of the valve stem 3.

[0040] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present utility model.

Claims

1. A direct-acting push-type mechanical valve, comprising a valve body (1), wherein a valve cavity (2) is formed in the valve body (1), and a valve stem (3) is arranged in the valve cavity (2), characterized in that: The rear end of the valve body (1) is integrally provided with a rear cover (4), and the front end of the valve body (1) is provided with a pressing assembly (6), the pressing assembly (6) comprising a mounting seat (61) fixedly connected to the front end of the valve body (1), and a swinging pressure plate (62) swingably connected to the mounting seat (61), the front end of the valve stem (3) protruding from the mounting seat (61) and triggering cooperation with the swinging pressure plate (62), an elastic member (5) is abutted between the rear end of the valve stem (3) and the rear cover (4), the elastic member (5) making the valve stem (3) always have a movement tendency to protrude from the mounting seat (61).

2. A direct-acting push-type mechanical valve according to claim 1, characterized in that: The valve body (1) is provided with an air inlet (11), a working port A (12) and a working port B (13); the valve stem (3) has a first working position and a second working position; when the valve stem (3) is located at the first working position, the air inlet (11) is in communication with the working port A (12); when the valve stem (3) is located at the second working position, the air inlet (11) is in communication with the working port B (13).

3. A direct-acting push-type mechanical valve according to claim 2, characterized in that: The swing pressure plate (62) has a third working position and a fourth working position. When the swing pressure plate (62) is in the third working position, the swing pressure plate (62) and the valve stem (3) are disengaged from the triggering cooperation, and the valve stem (3) is in the first working position. When the swing pressure plate (62) is in the fourth working position, the swing pressure plate (62) and the valve stem (3) are triggered to cooperate, and the valve stem (3) is in the second working position.

4. A direct-acting push-type mechanical valve according to claim 1, characterized in that: The lower end of the swing pressure plate (62) is provided with a columnar protrusion (621) that cooperates with the valve stem (3) for triggering.

5. The direct-acting push-type mechanical valve according to claim 1, characterized in that: The first end of the swing pressure plate (62) is swingably connected to the mounting seat (61) via a rotating shaft (622), and the second end of the swing pressure plate (62) is provided with a roller (623).

6. A direct-acting push-type mechanical valve according to claim 3, characterized in that: When the swing pressure plate (62) is in the third position, the angle between the swing pressure plate (62) and the mounting seat (61) is 22°-24°.

7. A direct-acting push-type mechanical valve according to claim 1, characterized in that: The elastic member (5) is a return spring.

8. The direct-acting push-type mechanical valve according to claim 1, characterized in that: A plurality of sealing rings (31) are arranged between the valve stem (3) and the inner wall of the valve chamber (2).

9. The direct-acting push-type mechanical valve according to claim 1, characterized in that: A positioning retaining ring (7) is provided between the mounting seat (61) and the valve body (1).

10. The direct-acting push-type mechanical valve according to claim 1, characterized in that: A through hole is provided at the center of the mounting seat (61) for the valve stem (3) to pass through.

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