CN213393695U - One-way damping valve with replaceable valve core - Google Patents

Abstract

The utility model relates to a one-way damping valve with a replaceable valve core, which comprises a damping valve body, a blank bracket, a blank, a spring bracket, a compression spring, a spring plunger and an inner hexagonal screw; the top cylindrical boss of the white material support is inserted into the bottom of the step hole of the damping valve body, the middle part of the white material support is attached to the tapered hole through the conical boss, the bottom of the conical boss is provided with a connecting upright post, the annular white material is sleeved on the connecting upright post, the center of the white material support is a long hole, and the top of the long hole is provided with a damping hole; the spring support is sleeved on the connecting upright post, and the upper end surface of the spring support is propped against the lower end of the annular white material; the compression spring is arranged in a step hole at the lower end of the spring support, the top of the compression spring is abutted with the step surface of the step hole of the spring support, and the bottom of the compression spring is abutted with the step surface of the step through hole of the spring plunger; the spring plunger is arranged at the lower end of the long hole of the damping valve body; the inner hexagonal screw is clamped and fixed in the inner threaded hole at the lower end of the damping valve body through the outer thread of the inner hexagonal screw.

Description

One-way damping valve with replaceable valve core

Technical Field

The utility model relates to a hydraulic means field, especially a one-way damping valve of removable case.

Background

The one-way damping valve is a valve commonly used in a hydraulic system of engineering machinery, plays a very important role in the hydraulic system, and can enable a hydraulic actuating element to move stably under the throttling and buffering effect of a damping hole. Because the damping holes of different sizes play different cushioning effects, the selection to the damping hole is difficult to handle the accuse during earlier stage use, so need select the one-way damping valve of different apertures many times to carry out the adaptation, use cost is higher.

Disclosure of Invention

The utility model aims to solve the technical problem that a one-way damping valve of removable case is provided, this kind of one-way damping valve equipment is simple, only needs the case of changing different damping holes during the use just can effectual solution engineering equipment impact and the vibrations problem that produces when moving.

In order to solve the technical problem, the utility model discloses a realize according to following mode: the utility model relates to a one-way damping valve with a replaceable valve core, which comprises a damping valve body, a white material bracket, an annular white material, a spring bracket, a compression spring, a spring plunger and an inner hexagonal screw; the damping valve body is characterized in that the upper end and the lower end of the damping valve body are both provided with external thread cylinders, the central hole at the upper end is a conical hole, a step hole is arranged below the conical hole, the central hole at the lower end of the damping valve body is a long hole, the bottom of the long hole is communicated with the bottom of the step hole through the conical hole, and the inlet of the long hole is provided with an internal thread hole; the top cylindrical boss of the white material support is inserted into the bottom of the step hole, the middle part of the white material support is attached to the tapered hole through the conical boss, the white material support and the tapered hole form closed connection, the bottom of the conical boss is provided with a connecting upright post, the annular white material is sleeved on the connecting upright post, the center of the white material support is a long hole, the top of the long hole is provided with a damping hole, and the long hole is communicated with the step hole at the upper end of the damping valve body; the spring support is in the shape of a step shaft with a thin upper part and a thick lower part, the center of the spring support is a step hole with a thin upper part and a thick lower part, the spring support is sleeved on the connecting upright post by depending on the upper end of the step hole, and the upper end surface of the spring support is propped against the lower end of the annular white material; the step shaft at the lower end of the spring support is clamped in the long hole of the damping valve body and can move up and down along the long hole; the end with the thinner diameter on the step shaft is radially provided with a cross-shaped through hole which penetrates through the end with the thinner diameter of the step hole in the spring support; the compression spring is arranged in a step hole at the lower end of the spring support, the top of the compression spring is abutted with the step surface of the step hole of the spring support, and the bottom of the compression spring is abutted with the step surface of the step through hole of the spring plunger; the spring plunger is arranged at the lower end of the long hole of the damping valve body and can move up and down in the long hole; the inner hexagonal screw is clamped and fixed in the inner threaded hole at the lower end of the damping valve body through the outer thread of the inner hexagonal screw, one end of the inner hexagonal screw is provided with an inner hexagonal counter bore, the other end of the inner hexagonal screw is provided with a cylindrical through hole with the diameter smaller than that of the inner hexagonal counter bore, and the upper end part of the inner hexagonal screw is abutted to the lower end face of the spring plunger.

The taper hole at the upper end of the damping valve body is a 24-degree taper hole.

An annular groove is arranged on the end face of a step shaft at the bottom of the external thread cylinder at the lower end of the damping valve body, and an ED ring is placed in the annular groove.

The utility model discloses an actively the effect: a one-way damping valve of removable case, its simple structure utilizes whitewashed and conical surface seal structure, makes the sealing performance at the sealing position of damping valve improve, and the accessible twists out the mode of hexagon socket head cap screw, changes the whitewashed support in different damping holes, and control flow reduces the impact, can effectual impact and the vibrations problem that produces when solving the engineering equipment motion, the effectual use cost that has reduced.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure, the damping valve body 1, the white material support 3, the annular white material 4, the spring support 5, the compression spring 6, the spring plunger 7, the inner hexagonal screw 8, the ED ring 9 and the damping hole are arranged.

Detailed Description

As shown in fig. 1 in the drawings of the specification, the one-way damping valve with a replaceable valve core of the present invention comprises a damping valve body 1, a white material support 2, an annular white material 3, a spring support 4, a compression spring 5, a spring plunger 6 and an inner hexagonal screw 7; an external thread is arranged on the outer cylindrical surface of the upper end of the damping valve body 1, the upper end center hole is a conical hole, a step hole is arranged below the conical hole, the lower end center hole of the damping valve body 1 is a long hole, the bottom of the long hole is communicated with the bottom of the step hole through the conical hole, and an internal thread hole is arranged at the inlet position of the long hole; the top cylindrical boss of the white material support 2 is inserted into the bottom of the step hole, the middle part of the white material support is attached to the tapered hole through the conical boss, the white material support and the tapered hole form a closed connection, the bottom of the conical boss is provided with a connecting upright post, the annular white material 3 is sleeved on the connecting upright post, the center of the white material support 2 is a long hole, the top of the long hole is provided with a damping hole, the damping hole plays a role in damping and buffering, and the long hole is communicated with the step hole in the upper end of the damping; the spring support 4 is in the shape of a step shaft with a thin upper part and a thick lower part, the center of the spring support 4 is a step hole with a thin upper part and a thick lower part, the spring support 4 is sleeved on the connecting upright post by depending on the upper end of the step hole, and the upper end surface of the spring support is propped against the lower end of the annular white material 3; the stepped shaft at the lower end of the spring support 4 is clamped in the long hole of the damping valve body 1 and can move up and down along the long hole; a cross-shaped through hole is radially arranged at one end with the thinner diameter on the step shaft, penetrates through one end with the thinner diameter of the step hole in the spring support 4 and is used for the circulation of oil liquid; the compression spring 5 is arranged in a step hole at the lower end of the spring support 4, the top of the compression spring is abutted against the step surface of the step hole of the spring support 4, and the bottom of the compression spring is abutted against the step surface of the step through hole of the spring plunger 6; the spring plunger 6 is arranged at the lower end of the long hole of the damping valve body 1 and can move up and down in the long hole; the inner hexagonal screw 7 is clamped and fixed in an inner threaded hole at the lower end of the damping valve body 1 through outer threads of the inner hexagonal screw, one end of the inner hexagonal screw is an inner hexagonal counter bore, the other end of the inner hexagonal screw is a cylindrical through hole with the diameter smaller than the inner hexagonal counter bore, and the upper end part of the inner hexagonal screw 7 is abutted to the lower end face of the spring plunger 6 and used for preventing the spring plunger 6 from axially moving.

The annular white material 3 arranged between the spring support 4 and the white material support 2 is made of a white material, the white material has cold flow property, the hardness of the material is between that of plastic box rubber, the white material is in contact with the metal conical surface, the sealing effect is excellent, and when the white material is abraded, the white material can generate micro deformation under the system pressure and always keeps an inosculation state with the conical hole part, so that the excellent sealing effect is achieved.

The taper hole at the upper end of the damping valve body 1 is a 24-degree taper hole.

An annular groove is formed in the end face of a step shaft at the bottom of the external thread cylinder at the lower end of the damping valve body 1, and an ED ring 8 is placed in the annular groove and used for sealing during connection.

The utility model discloses a working process is: a one-way damping valve of removable case will set up 24 degrees bell mouth one end and connect hydraulic line when using, and 1 lower extreme external screw thread cylinder of damping valve body is sealed through ED circle 8 on through precession engineering equipment. When the hydraulic system returns oil, hydraulic oil flows reversely, namely flows upwards from the lower part, the annular white material 3 is contacted with the conical hole and sealed, and the oil flows back to the upper pipeline system from the damping hole on the white material support 2.

According to the effect of fluid buffering, judge whether the damping hole of white material support 2 is suitable, unscrew the hexagon socket head cap screw 7 of damping valve body 1 bottom, take out spring plunger 6, compression spring 5, spring support 4, annular white material 3 and white material support 2 in proper order, change the white material support 2 of suitable aperture damping hole and install to better reach the purpose that reduces pipeline pressure impact and vibrations.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to 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", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, merely for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Claims (3)

1. The utility model provides a one-way damping valve of removable case which characterized in that: the damping valve comprises a damping valve body, a white material bracket, a white material, a spring bracket, a compression spring, a spring plunger and an inner hexagonal screw; the damping valve body is characterized in that the upper end and the lower end of the damping valve body are both provided with external thread cylinders, the central hole at the upper end is a conical hole, a step hole is arranged below the conical hole, the central hole at the lower end of the damping valve body is a long hole, the bottom of the long hole is communicated with the bottom of the step hole through the conical hole, and the inlet of the long hole is provided with an internal thread hole; the top cylindrical boss of the white material support is inserted into the bottom of the step hole, the middle part of the white material support is attached to the tapered hole through the conical boss, the white material support and the tapered hole form closed connection, the bottom of the conical boss is provided with a connecting upright post, the annular white material is sleeved on the connecting upright post, the center of the white material support is a long hole, the top of the long hole is provided with a damping hole, and the long hole is communicated with the step hole at the upper end of the damping valve body; the spring support is in the shape of a step shaft with a thin upper part and a thick lower part, the center of the spring support is a step hole with a thin upper part and a thick lower part, the spring support is sleeved on the connecting upright post by depending on the upper end of the step hole, and the upper end surface of the spring support is propped against the lower end of the annular white material; the step shaft at the lower end of the spring support is clamped in the long hole of the damping valve body and can move up and down along the long hole; the end with the thinner diameter on the step shaft is radially provided with a cross-shaped through hole which penetrates through the end with the thinner diameter of the step hole in the spring support; the compression spring is arranged in a step hole at the lower end of the spring support, the top of the compression spring is abutted with the step surface of the step hole of the spring support, and the bottom of the compression spring is abutted with the step surface of the step through hole of the spring plunger; the spring plunger is arranged at the lower end of the long hole of the damping valve body and can move up and down in the long hole; the inner hexagonal screw is clamped and fixed in the inner threaded hole at the lower end of the damping valve body through the outer thread of the inner hexagonal screw, one end of the inner hexagonal screw is provided with an inner hexagonal counter bore, the other end of the inner hexagonal screw is provided with a cylindrical through hole with the diameter smaller than that of the inner hexagonal counter bore, and the upper end part of the inner hexagonal screw is abutted to the lower end face of the spring plunger.

2. The one-way damping valve with a replaceable valve core as claimed in claim 1, wherein: the taper hole at the upper end of the damping valve body is a 24-degree taper hole.

3. The one-way damping valve with a replaceable valve core as claimed in claim 1, wherein: an annular groove is arranged on the end face of a step shaft at the bottom of the external thread cylinder at the lower end of the damping valve body, and an ED ring is placed in the annular groove.

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