Anti-impact valve

Abstract

The utility model belongs to the technical field of valves, and particularly relates to an anti-impact valve which comprises a valve body, a valve core and a valve core. The valve seat is arranged in the valve body; the valve cover is arranged at the top of the valve body; the valve rod penetrates through the valve body and the valve cover and can move up and down, and an adjusting hand wheel is arranged at the top end of the valve rod; the valve element is arranged at the bottom end of the valve rod and can be matched with the valve seat to seal the flow channel; the anti-impact part is arranged at the bottom end of the valve core; the anti-impact part can buffer medium impact through fluid damping, and compared with the prior art, the service life of the valve is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve technical field, especially relate to a kind of impact resistance valves. BACKGROUND

[0002] Valve is used to open and close pipeline, control flow direction, adjust and control the parameter (temperature, pressure and flow) of conveying medium, valve is often impacted by medium during use, especially when water hammer phenomenon occurs, it can cause huge impact, such as the patent disclosed in application No.CN202022353223.X, a kind of petroleum pipeline low-temperature-resistant high-pressure impact resistance valve, the middle position of the valve body is fixedly installed with valve stem, the outer wall of the valve stem is provided with valve core, the valve core is fixedly connected with the outer wall of the valve stem, the outer wall of the valve stem is fixedly installed with carbon fiber outer shell, the outer wall on both sides of the carbon fiber outer shell is fixedly installed with valve core magnetic attraction piece, the lower side of the valve core is provided with valve port, the both sides of the valve port are fixedly installed with valve port magnetic attraction piece, the both sides of the valve core are fixedly connected with valve port magnetic attraction piece through valve core magnetic attraction piece;

[0003] This kind of existing valve still lacks impact resistance means during use, and the valve core is prone to damage under long-term medium impact. The sealing property of the valve is damaged, and the service life of the valve is reduced, so it is necessary to improve. UTILITY MODEL CONTENTS

[0004] The utility model aims at the above-mentioned technical problem, provide a kind of impact resistance valves, to effectively improve the service life of valve.

[0005] Therefore, the utility model provides a kind of impact resistance valves, comprising:

[0006] Valve body, the flow passage is provided in the valve body;

[0007] Valve seat, the valve seat is arranged in the valve body;

[0008] Valve cover, the valve cover is arranged on the top of the valve body;

[0009] Valve stem, the valve stem is arranged on the valve body and the valve cover and can be moved up and down, the top end of the valve stem is provided with adjusting hand wheel;

[0010] Valve core, the valve core is arranged on the bottom end of the valve stem and can be cooperated with the valve seat to close the flow passage;

[0011] Further comprising:

[0012] Impact resistance part, the impact resistance part is arranged on the bottom end of the valve core;

[0013] Wherein, the impact resistance part can buffer medium impact by fluid damping.

[0014] In the technical solution, during use, the valve is adjusted by a hand wheel to drive the valve rod to move up and down, so as to drive the valve core to cooperate with the valve seat to open and close the flow passage; when the medium impact acts on the valve core, the anti-impact part can buffer the medium impact by fluid damping, thereby reducing the medium impact force directly acting on the valve core, preventing the valve core from being damaged due to long-term medium impact, preventing the sealing performance of the valve from being damaged, and effectively prolonging the service life of the valve.

[0015] In the above technical solution, further, the anti-impact part further comprises:

[0016] a buffer cavity arranged in the valve core;

[0017] a buffer groove arranged at the bottom of the valve core;

[0018] a first pressure bearing plate arranged in the buffer groove, and a gap being arranged between the side wall of the first pressure bearing plate and the inner wall of the buffer groove;

[0019] a second pressure bearing plate arranged in the buffer cavity in the form of a piston, and a plurality of holes for fluid passing being arranged on the second pressure bearing plate;

[0020] wherein the buffer cavity and the buffer groove are communicated through a channel, the first pressure bearing plate and the second pressure bearing plate are connected to each other through a connecting rod, and the diameter of the connecting rod is smaller than the diameter of the channel.

[0021] In the above technical solution, further, it further comprises:

[0022] an inner cavity arranged in the second pressure bearing plate;

[0023] energy-absorbing particles filled in the inner cavity;

[0024] wherein the surface of the second pressure bearing plate is provided with a filling port communicated with the inner cavity, and a sealing cover is detachably mounted on the filling port.

[0025] In the above technical solution, further, the energy-absorbing particles are steel balls.

[0026] In the above technical solution, further, 90% of the space in the inner cavity is filled with energy-absorbing particles.

[0027] The beneficial effects of the utility model are as follows:

[0028] 1. Through the setting of the anti-impact part, the medium impact force directly acting on the valve core can be reduced, the damage of the valve core caused by the medium impact for a long time can be prevented, the sealing performance of the valve can be prevented from being damaged, and the service life of the valve is effectively prolonged;

[0029] 2. Through the setting of the buffer groove, the buffer cavity, the first pressure bearing plate and the second pressure bearing plate, two fluid damping buffer structures can be formed, so that the medium impact is effectively buffered, and the buffering effect on the medium impact is improved;

[0030] 3. Through the setting of the inner cavity and the energy-absorbing particles, the medium impact can be further buffered, so that the buffering effect on the medium impact is improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0032] Figure 1 The present application is a specific embodiment structure diagram.

[0033] Figure 2 The present application is a valve body sectional view structure diagram.

[0034] Figure 3 The present application is a valve core structure diagram.

[0035] Figure 4 The present application is an anti-impact part structure diagram.

[0036] Figure 5 The present application is an anti-impact part sectional view structure diagram.

[0037] The marks in the figure are:

[0038] 1, valve body; 100, flow channel; 2, valve seat; 3, valve cover; 4, valve stem; 5, valve core; 6, anti-impact part; 60, buffer cavity; 61, buffer groove; 62, first pressure bearing plate; 63, second pressure bearing plate; 64, hole; 65, passage; 66, connecting rod; 67, inner cavity; 68, energy-absorbing particles; 69, sealing cover. DETAILED DESCRIPTION

[0039] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0040] In the description of the present application, it should be noted that the terms used herein are only for describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. In order to facilitate the description, the size of each part shown in the drawings is not drawn according to the actual proportional relationship. The technology, method and equipment known to those skilled in the related art can not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0041] Embodiment 1:

[0042] The embodiment of the present application provides an anti-impact valve, comprising: a valve body 1, a flow passage 100 is arranged in the valve body 1; a valve seat 2, the valve seat 2 is arranged in the valve body 1; a valve cover 3, the valve cover 3 is arranged at the top of the valve body 1; a valve stem 4, the valve stem 4 is arranged in the valve body 1 and the valve cover 3 and can move up and down, the top end of the valve stem 4 is provided with an adjusting hand wheel; a valve core 5, the valve core 5 is arranged at the bottom end of the valve stem 4 and can cooperate with the valve seat 2 to close the flow passage 100;

[0043] Further comprising: an anti-impact part 6, the anti-impact part 6 is arranged at the bottom end of the valve core 5;

[0044] Wherein, the anti-impact part 6 can buffer the medium impact by fluid damping.

[0045] In the embodiment, during use, the valve stem 4 is driven to move up and down by the adjusting hand wheel, so as to drive the valve core 5 to cooperate with the valve seat 2 to open and close the flow passage 100, when the medium impact acts on the valve core 5, the anti-impact part 6 can buffer the medium impact by fluid damping, so as to reduce the medium impact force directly acting on the valve core 5, prevent the valve core 5 from being damaged due to the influence of medium impact for a long time, prevent the sealing performance of the valve from being damaged, and effectively improve the service life of the valve.

[0046] Embodiment 2:

[0047] The anti-impact valve provided by the embodiment has the following technical features in addition to the technical solutions in the above embodiments: the anti-impact part 6 further comprises: a buffer cavity 60 arranged in the valve core 5; a buffer groove 61 arranged at the bottom of the valve core 5; a first pressure bearing plate 62 arranged in the buffer groove 61, and a gap is arranged between the side wall of the first pressure bearing plate 62 and the inner wall of the buffer groove 61; and a second pressure bearing plate 63 arranged in the buffer cavity 60 in the form of a piston, and a plurality of holes 64 for fluid passing through are arranged on the second pressure bearing plate 63.

[0048] The buffer cavity 60 and the buffer groove 61 are communicated through a channel 65, the first pressure bearing plate 62 and the second pressure bearing plate 63 are connected to each other through a connecting rod 66, and the diameter of the connecting rod 66 is smaller than the diameter of the channel 65.

[0049] In the embodiment, in the use process of the valve, the medium in the flow channel 100 fills the buffer groove 61 and the buffer cavity 60 through the gap between the side wall of the first pressure bearing plate 62 and the inner wall of the buffer groove 61 and the holes 64 on the second pressure bearing plate 63, when the medium impact acts on the valve core 5, the first pressure bearing plate 62 moves into the buffer groove 61 under the action of the medium impact, in the moving process of the first pressure bearing plate 62, the medium in the buffer groove 61 is extruded and flows out of the buffer groove 61 through the gap between the side wall of the first pressure bearing plate 62 and the inner wall of the buffer groove 61, so that the fluid damping generated in the viscosity process of the medium flow is used to buffer the medium impact and absorb the kinetic energy of the medium impact, at the same time, under the action of the connecting rod 66, the second pressure bearing plate 63 also moves, the medium in the buffer cavity 60 is extruded and moves out of the buffer cavity 60 through the holes 64, so that the fluid damping generated in the viscosity process of the medium flow is further used to buffer the medium impact and absorb the kinetic energy of the medium impact, compared with the prior art, the anti-impact valve can effectively absorb the medium impact acting on the valve core 5, reduce the medium impact force directly acting on the valve core 5, prevent the valve core 5 from being damaged due to the influence of the medium impact for a long time, prevent the sealing performance of the valve from being damaged, and effectively improve the service life of the valve.

[0050] Embodiment 3

[0051] The anti-impact valve provided by the embodiment has the following technical features in addition to the technical solutions in the above embodiments: the anti-impact valve further comprises: an inner cavity 67 arranged in the second pressure bearing plate 63; and energy-absorbing particles 68 filled and arranged in the inner cavity 67.

[0052] The surface of the second pressure bearing plate 63 is provided with a filling opening communicated with the inner cavity 67, and a sealing cover 69 is detachably arranged on the filling opening.

[0053] The energy-absorbing particles 68 are steel balls.

[0054] 90% of the space in the inner cavity 67 is filled with the energy-absorbing particles 68.

[0055] In the present embodiment, during use, when the second pressure-bearing plate 63 moves under the action of the medium impact, the energy-absorbing particles 68 in the inner cavity 67 have a movement trend opposite to the movement acceleration direction of the second pressure-bearing plate 63, and the energy-absorbing particles 68 effectively convert the kinetic energy of the medium impact into heat energy through mutual collision and friction, thereby absorbing and buffering the medium impact, further reducing the medium impact force directly acting on the valve core 5, preventing the valve core 5 from being damaged due to the influence of the medium impact for a long time, thereby preventing the sealing performance of the valve from being damaged, effectively improving the service life of the valve, and the heat energy generated by the energy-absorbing particles 68 can also be absorbed by the medium filling the buffer cavity 60, thereby effectively ensuring the working performance of the energy-absorbing particles 68.

[0056] The embodiments of the present application are described above in combination with the drawings, and the embodiments and features in the embodiments of the present application can be combined with each other without conflict, the present application is not limited to the above-mentioned specific embodiments, the above-mentioned specific embodiments are only illustrative, but not limited, and those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application, and all forms belong to the protection of the present application.

Claims

1. An anti-impact valve, comprising: a valve body (1) in which a flow passage (100) is arranged; a valve seat (2) arranged in the valve body (1); a valve cover (3) arranged on the top of the valve body (1); a valve stem (4) arranged in the valve body (1) and the valve cover (3) and movable up and down, the top end of the valve stem (4) being provided with an adjusting hand wheel; a valve core (5) arranged at the bottom end of the valve stem (4) and capable of cooperating with the valve seat (2) to close the flow passage (100); characterized in that it further comprises: an anti-impact part (6) arranged at the bottom end of the valve core (5); wherein the anti-impact part (6) can buffer the impact of the medium through fluid damping.

2. A shock resistant valve according to claim 1, wherein The anti-impact part (6) further comprises: a buffer cavity (60) arranged in the valve core (5); a buffer groove (61) arranged at the bottom of the valve core (5); a first pressure bearing plate (62) arranged in the buffer groove (61), a gap being provided between the side wall of the first pressure bearing plate (62) and the inner wall of the buffer groove (61); a second pressure bearing plate (63) arranged in the buffer cavity (60) in the form of a piston, a plurality of holes (64) for fluid passing being provided on the second pressure bearing plate (63); wherein the buffer cavity (60) and the buffer groove (61) are communicated through a channel (65), the first pressure bearing plate (62) and the second pressure bearing plate (63) are connected to each other through a connecting rod (66), and the diameter of the connecting rod (66) is smaller than the diameter of the channel (65).

3. A valve according to claim 2, wherein Further comprising: an inner cavity (67) arranged in the second pressure bearing plate (63); energy-absorbing particles (68) filled in the inner cavity (67); wherein the surface of the second pressure bearing plate (63) is provided with a filling opening communicated with the inner cavity (67), and a sealing cover (69) is detachably mounted on the filling opening.

4. A shock resistant valve according to claim 3, wherein: The energy-absorbing particles (68) are steel balls.

5. A shock resistant valve according to claim 3, wherein: 90% of the space in the inner cavity (67) is filled with energy-absorbing particles (68).

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