Wear-resistant double-valve-element stop valve

Abstract

The utility model relates to the technical field of valves, in particular to a wear-resisting double-valve-element stop valve which comprises a valve body and double valve elements arranged in the valve body in an attached and sliding mode, a water inlet pipe is arranged on one side of the valve body, and a water outlet pipe is arranged on the other side of the valve body. The top end of the double valve element is fixedly connected with a lifting screw penetrating through the top of the valve body, the outer wall of the lifting screw is in meshed connection with the valve body through threads, the double valve element comprises a groove valve element fixedly connected with the lifting screw, a groove is formed in the side, facing the water inlet pipe, of the groove valve element, and a second valve element is arranged in the groove in a sliding mode. An elastic column is arranged between the second valve element and one side of the inner wall of the groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a wear -resisting double valve core stop valve. BACKGROUND

[0002] Valve is used to open and close pipeline, controls flow direction, adjusts and controls the parameter (temperature, pressure and flow) of delivery medium, and is pipeline accessory, according to its function, can be divided into shut-off valve, check valve, regulating valve, also can be divided into ball valve, butterfly valve, gate valve according to the type of its opening element, stop valve is a kind of valve, and the travel of opening and closing element is short, and opening and closing element moves along the center line of valve body, according to the movement form of opening and closing element, the size change of the through hole in the middle of valve body is proportional to the travel of opening and closing element, therefore it is very suitable for being used to adjust flow, simultaneously, since the travel of its opening and closing element is short, therefore, when needing to close valve, the through hole in the middle of valve body can be quickly closed by opening and closing element, and the cutting speed is very fast.

[0003] Although the above prior art can solve the corresponding technical problems, there are still some defects: when the existing stop valve is used, if the fluid flow rate flowing in the stop valve is high, when fast cutting is carried out, fluid is easily impacted on the valve core at high speed under the action of inertia, and the valve core is easily damaged due to repeated impact after long-term use, and the service life is short. UTILITY MODEL CONTENTS

[0004] The utility model is directed against the defects and deficiencies of prior art, and provides a wear -resisting double valve core stop valve that is impact -resistant and has long service life.

[0005] To achieve the above object, the utility model adopts the following technical scheme: a wear -resisting double valve core stop valve, including valve body and double valve core that are attached and slidably arranged in the valve body, one side of the valve body is equipped with water inlet pipe, the other side of the valve body is equipped with water outlet pipe, the top of the double valve core is fixedly connected with lifting screw rod that penetrates the top of valve body and is connected with the valve body through thread engagement, the double valve core includes recessed groove valve core fixedly connected with lifting screw rod, one side of the recessed groove valve core towards water inlet pipe is equipped with recessed groove, the second valve core is slidably arranged in the recessed groove, and the elastic column is arranged between the second valve core and one side of the inner wall of the recessed groove.

[0006] Further improvement is that the top of the lifting screw rod is equipped with rotary handle.

[0007] Further improvement is that the end of the water inlet pipe and the end of the water outlet pipe are both equipped with connecting flange.

[0008] Further improvement is that the center position of the second valve core is embedded with pressure reducing block, and the arc-shaped elastic sheet is arranged between the pressure reducing block and the inner wall of the recessed groove of the recessed groove valve core.

[0009] Further improvement is that the pressure reducing block comprises a first plate embedded in the center of the second valve core and a second plate arranged on the side of the first plate close to the groove valve core, a contraction groove is formed between the first plate and the second plate, and a plurality of rubber columns are fixedly installed in the contraction groove.

[0010] Further improvement is that the other side of the first plate is provided with a semispherical guide lug.

[0011] After the above technical scheme is used, the beneficial effects of the utility model are that: when the utility model is used, if the high flow rate fluid is quickly cut off, the impact force generated by the inertia of the fluid is applied to the second valve core of the double valve core, the second valve core is pushed along the groove of the groove valve core, and the elastic column is extruded and deformed, thereby the impact generated by the fluid is slowly released and absorbed, and the impact resistance of the valve core is greatly improved, the service life of the valve core is longer, and the valve core is not easy to be damaged by impact. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0013] Fig. 1 is the structure schematic view of the front view section of the stop valve of the utility model;

[0014] Fig. 2 is the structure schematic view of the front view section of the double valve core of the utility model;

[0015] Fig. 3 is the structure schematic view of the front view section of the pressure reducing block of the utility model. DETAILED DESCRIPTION

[0016] The utility model will be further described in combination with the drawings and specific embodiments.

[0017] Referring to Figs. 1-3The technical scheme adopted by the embodiment is shown as follows: a wear-resistant double-valve-core stop valve, comprising a valve body 1 and a double-valve-core 3 slidingly arranged in the valve body 1, one side of the valve body 1 is provided with a water inlet pipe 6, the other side of the valve body 1 is provided with a water outlet pipe 7, a lifting screw rod 2 penetrating through the top of the valve body 1 and having an outer wall threadedly connected with the valve body 1 is fixedly connected to the top end of the double-valve-core 3, the double-valve-core 3 comprises a groove valve core 31 fixedly connected with the lifting screw rod 2, one side of the groove valve core 31 facing the water inlet pipe 6 is provided with a groove, a second valve core 32 is slidingly arranged in the groove, and an elastic column 34 is arranged between the second valve core 32 and one side of the inner wall of the groove. In use, the water inlet pipe 6 is connected to the water inlet end of an external pipeline, and the water outlet pipe 7 is connected to the water outlet end of the external pipeline, so that the fluid flowing in the external pipeline can enter the valve body 1 through the water inlet pipe 6 and flow out of the water outlet pipe 7. During the fluid flow process, the lifting screw rod 2 can be twisted to control the lifting screw rod 2 to lift or lower the double-valve-core 3, thereby controlling the fluid flow or directly cutting off the fluid. When the fluid flow is rapidly stopped, the impact force generated by the inertia of the fluid will act on the double-valve-core 3, causing the second valve core 32 facing the water inlet pipe 6 to be impacted and pushed along the groove of the groove valve core 31, so that it is pressed into the groove. At this time, the impact force is transmitted to the elastic column 34 through the second valve core 32, and the elastic column 34 is deformed by being extruded, thereby converting the impact force generated by the fluid into the elastic force of the elastic column 34. At this time, the impact force of the fluid can be released and absorbed, thereby greatly improving the impact resistance of the double-valve-core 3 and prolonging the service life of the valve.

[0018] The lifting screw rod 2 is provided with a rotating handle 4 at the top end, which facilitates the rotation of the lifting screw rod 2 and saves labor.

[0019] The water inlet pipe 6 and the water outlet pipe 7 are both provided with a connecting flange 5 at the end, which facilitates the connection of the valve to the pipeline.

[0020] The second valve core 32 is embedded with a pressure reduction block 33, and an arc-shaped elastic sheet 35 is arranged between the pressure reduction block 33 and the inner wall of the groove of the groove valve core 31, the pressure reduction block 33 comprises a first plate block 332 embedded in the center position of the second valve core 32 and a second plate block 331 arranged on the side of the first plate block 332 close to the groove valve core 31, a contraction groove 334 is formed between the first plate block 332 and the second plate block 331, and a plurality of rubber columns 335 are fixedly installed in the contraction groove 334, when the second valve core 32 is impacted, the impact force is shared by the pressure reduction block 33, at this time, the first plate block 332 is extruded and moved together with the second valve core 32, so that the first plate block 332 moves towards the second plate block 331 and extrudes the contraction groove 334, and the rubber columns 335 are arranged in the contraction groove 334, at this time, the impact can be absorbed by the rubber columns 335, and the impact force is further absorbed by the arc-shaped elastic sheet 35, so that the elastic column 34 is prevented from being excessively deformed, the impact absorption effect is improved, and the double valve core 3 is further prevented from being quickly damaged due to impact.

[0021] The other side of the first plate block 332 is provided with a semispherical guide protrusion 333, which is beneficial to guiding the impact fluid from the oblique direction to impact the second valve core 32 and transfer part of the impact force to the valve body 1, so that the impact load of the double valve core 3 is reduced.

[0022] The working principle of the utility model is as follows: when the utility model is used, the water inlet pipe 6 is connected to the water inlet end of the external pipeline, the water outlet pipe 7 is connected to the water outlet end of the external pipeline, at this time, the fluid flowing in the external pipeline can enter the valve body 1 through the water inlet pipe 6 and flow out from the water outlet pipe 7 through the valve body 1, in the process of fluid flow, the lifting screw rod 2 can be twisted to control the double valve core 3 to rise or fall, so that the fluid flow is controlled or the fluid is directly cut off, when the fluid flow is quickly cut off, the impact force generated by the inertia of the fluid is applied to the double valve core 3, the second valve core 32 towards the water inlet pipe 6 is impacted, so that the second valve core 32 is pushed along the groove of the groove valve core 31 and pressed into the groove, at this time, the impact force is transmitted to the elastic column 34 through the second valve core 32, and the elastic column 34 is extruded and deformed, so that the impact force of the fluid is converted into the elastic force of the elastic column 34, at this time, the impact force of the fluid is released and absorbed, so that the impact resistance of the double valve core 3 is greatly improved, the service life of the valve is longer, and the valve is not easily damaged by impact.

[0023] The utility model wants to protect is the structure of product, the model of each element is not the content of the utility model protection, is also the known art, the market can be as a kind of selection application to the element that can realize the above-mentioned function of the utility model. Therefore the model of element and other parameters are not described in detail in the utility model. The contribution of the utility model is to combine each element scientifically together.

[0024] The basic principle and main features of the utility model and its advantages are shown and described above, and those skilled in the art should understand that the utility model is not limited by the above examples. The above examples and descriptions are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements. These changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the attached claims and their equivalents. The utility model is not described in detail, which is the known technology of those skilled in the art.

Claims

1. A wear-resistant double valve core shut-off valve, comprising a valve body (1) and a double valve core (3) fitted and slidably disposed within the valve body (1), wherein a water inlet pipe (6) is provided on one side of the valve body (1) and a water outlet pipe (7) is provided on the other side of the valve body (1), wherein a lifting screw (2) penetrating the top of the valve body (1) and having its outer wall threadedly engaged with the valve body (1) is fixedly connected to the top of the double valve core (3), characterized in that: The dual valve core (3) includes a grooved valve core (31) fixedly connected to the lifting screw (2). The grooved valve core (31) has a groove on the side facing the water inlet pipe (6). A second valve core (32) is slidably provided in the groove. An elastic column (34) is provided between the second valve core (32) and one side of the inner wall of the groove.

2. The wear-resistant double-core shut-off valve according to claim 1, characterized in that: The lifting screw (2) is provided with a rotating handle (4) at its top.

3. The wear-resistant double-core shut-off valve according to claim 1, characterized in that: Both the end of the inlet pipe (6) and the end of the outlet pipe (7) are provided with connecting flanges (5).

4. The wear-resistant double-core shut-off valve according to claim 1, characterized in that: The second valve core (32) has a pressure reducing block (33) embedded in its center, and an arc-shaped elastic sheet (35) is provided between the pressure reducing block (33) and the inner wall of the groove of the groove valve core (31).

5. The wear-resistant double-core shut-off valve according to claim 4, characterized in that: The pressure reducing block (33) includes a first plate (332) embedded in the center of the second valve core (32) and a second plate (331) disposed on the side of the first plate (332) near the grooved valve core (31). A shrinkage groove (334) is formed between the first plate (332) and the second plate (331), and a plurality of rubber columns (335) are fixedly installed in the shrinkage groove (334).

6. The wear-resistant double-core shut-off valve according to claim 5, characterized in that: The first plate (332) has a hemispherical guide protrusion (333) on the other side.

Images