High-sealing type one-way stop valve

Abstract

The utility model belongs to the technical field of stop valves, and particularly relates to a high-sealing type one-way stop valve which comprises a body, an air inlet hole is formed in the middle of the upper end of the body, an air outlet hole is formed in the upper end of the body and located on the right side of the air inlet hole, the lower end of the body is in contact with a silica gel pad, and an air cylinder cover plate is arranged at the lower end of the silica gel pad. An air cylinder is fixedly installed at the lower end of the air cylinder cover plate, a spring is fixedly welded to the outer side of the telescopic end of the air cylinder, the spring is fixedly connected with the middle of the silica gel pad, and the other end of the spring is welded to the body. According to the scheme, through cooperative use of the air cylinder, the silica gel pad, the spring and other structures, when inflation is conducted, the spring abuts against the silica gel pad to form a loop, when pressure maintaining is conducted, the air cylinder can jack up the silica gel pad, the middle of the silica gel pad is bulged and attached to the air inlet hole, gas closure sealing is conducted, the air tightness is controlled, and the sealing performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to one -way stop valve technical field, concretely relates to high sealing type one -way stop valve. BACKGROUND

[0002] One -way stop valve is a kind of valve, also called check valve or non-return valve, for controlling the flow direction of fluid in pipeline, and preventing fluid backflow. One -way stop valve is usually designed as a kind of automatic operation valve, and its working principle is to utilize the pressure difference of fluid in certain direction, so as to realize the opening and closing of valve.

[0003] In the utility model patent with patent grant announcement No. CN2856404Y, a one-way constant pressure stop valve is disclosed. A core pipe is arranged in the inner pipe, a spring seat, a spring and a working seat are sequentially arranged from bottom to top outside the core pipe, the working seat is fixed with the core pipe and is in sliding fit with the inner pipe, an outer pipe is further sleeved outside the inner pipe, upper and lower joints are arranged at both ends of the outer pipe and are in screw connection and gap fit connection with the inner pipe, a closed annular cavity is formed between the inner pipe and the outer pipe, and a well washing through hole is arranged on the inner pipe and close to the lower part of ball seat and spring seat. O-shaped sealing rings are arranged between the inner pipe and upper joint and ball seat, respectively, and a breathing hole is arranged on the inner pipe close to the spring in order to prevent the spring cavity from storing air pressure.

[0004] However, in the current pneumatic industry, the technology used is usually to place one-way check valve in airway, and due to the unstable sealing performance of one-way check valve sealing ring, it will interfere with the air tightness of one-way check valve, and in addition, the influence of material fatigue and wear, long-term use will cause the problem of obvious reduction of air tightness of product. SUMMARY

[0005] The utility model discloses a high sealing type one -way stop valve, solve the problem that the sealing performance of one -way check valve sealing ring is unstable and will interfere with the air tightness of one -way check valve, and in addition, the influence of material fatigue and wear, long -term use will cause the problem of obvious reduction of air tightness of product.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a high sealing type one -way stop valve, including body, the upper end middle part of body is equipped with the air inlet hole, the upper end of body and located the right side of air inlet hole is equipped with the air outlet hole, the lower end of body is contacted with silica gel pad, the lower end of silica gel pad is provided with cylinder cover plate, the lower end of cylinder cover plate is fixedly installed with the air cylinder, the telescopic end outside of air cylinder is fixedly welded with spring, the spring is fixedly connected with the middle part of silica gel pad, the other end of spring is welded with body.

[0007] The utility model discloses a principle is in: when inflating, under the deformation of spring, spring is against the silicone pad and moves down, makes the air inlet hole be in the open state, to form the loop, when pressure maintaining, under the telescopic effect of pneumatic cylinder, can jack up the silicone pad, makes the silicone pad middle part and rises, and is pasted with the air inlet hole, carries out the gas intercepting seal, makes the air tightness can be controlled, improves the sealing performance.

[0008] In the inflation process, the particles and impurities in the gas can be filtered out through the filter screen, avoiding affecting the subsequent structural parts, and under the action of the limiting block, the filter screen can be limited to ensure stability when the gas impacts, the end buckle can be pulled upward to move, driving the filter screen to move, and then driving the moving ring to slide along the inner wall of the air inlet hole, the connecting spring is deformed, and finally the filter screen is separated from the air inlet hole, so that the impurities attached to the filter screen can be cleaned comprehensively.

[0009] The utility model discloses the beneficial effect lies in: the cooperation of cylinder, silicone pad, spring and other structures is used, when inflating, spring is against the silicone pad and forms the loop, when pressure maintaining, can make cylinder jack up the silicone pad, make the silicone pad middle part and rise, and be pasted with the air inlet hole, carry out the gas intercepting seal, make the air tightness can be controlled, improve the sealing performance.

[0010] Further, four mounting holes one in the form of annular array are arranged on the upper end of the body, four mounting holes two in the form of annular array are arranged on the surface of the silicone pad, and the mounting holes one and the mounting holes two are used in cooperation to install and use the silicone pad.

[0011] Further, the telescopic end of the cylinder is slidably connected with the cylinder cover plate, and the telescopic end of the cylinder is fixedly connected with the middle part of the silicone pad, and the telescopic action of the cylinder can drive the middle part of the silicone pad to rise.

[0012] Further, the inner wall of the air inlet hole is fixedly connected with a fixing rod, the upper side of the fixing rod is welded with a connecting spring, the other end of the connecting spring is welded with a filter screen, the filter screen is slidably connected with the air inlet hole, the upper end of the filter screen is fixedly connected with an end buckle, the end buckle is slidably connected with the air inlet hole, and the inner wall of the air inlet hole is fixedly connected with two symmetrical limiting blocks, the filter screen is arranged to filter out impurities from the flowing gas, and under the action of the end buckle and the connecting spring, the filter screen can be pulled away from the air inlet hole, and the impurities can be cleaned comprehensively.

[0013] Further, the filter screen is in the form of a circle, and the filter screen is a stainless steel wire dense woven mesh, so that the filter screen has good durability.

[0014] Furthermore, a movable ring is fixedly sleeved on the outer side of the filter screen, and the movable ring is slidably connected to the air inlet. The movable ring ensures the stability of the filter screen movement.

[0015] Furthermore, each of the limiting blocks is in contact with the moving ring and the filter screen. By setting the limiting blocks, the filter screen can be limited in its use. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of the high-sealing one-way shut-off valve according to an embodiment of the present invention;

[0017] Figure 2 This invention relates to a high-sealing type one-way shut-off valve. Figure 1 A bottom-view perspective of the cylinder head plate;

[0018] Figure 3 This invention relates to a high-sealing type one-way shut-off valve. Figure 2 3D diagram of silicone pad removal;

[0019] Figure 4 This invention relates to a high-sealing type one-way shut-off valve. Figure 1 A front sectional view;

[0020] Figure 5 This invention relates to a high-sealing type one-way shut-off valve. Figure 4 Enlarged view of point A. Detailed Implementation

[0021] The following detailed description illustrates the specific implementation method:

[0022] The reference numerals in the accompanying drawings include: body 1, air inlet 2, silicone pad 3, cylinder cover plate 4, cylinder 5, spring 6, fixing rod 7, connecting spring 8, filter screen 9, moving ring 10, end buckle 11, and limit block 12.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, this embodiment provides a high-sealing one-way shut-off valve, including a body 1. An air inlet 2 is provided in the middle of the upper end of the body 1, and an air outlet is provided at the upper end of the body 1 and to the right of the air inlet 2. A silicone pad 3 is in contact with the lower end of the body 1. A cylinder head plate 4 is provided at the lower end of the silicone pad 3. A cylinder 5 is fixedly installed at the lower end of the cylinder head plate 4. A spring 6 is fixedly welded to the outer side of the telescopic end of the cylinder 5. The spring 6 is fixedly connected to the middle of the silicone pad 3, and the other end of the spring 6 is welded to the body 1.

[0024] like Figure 1 , Figure 2 ,Figure 3 、 Figure 4 As shown in the figure, the upper end of the body 1 is provided with four mounting holes one arranged in a ring array, the surface of the silica gel pad 3 is provided with four mounting holes two arranged in a ring array, the mounting holes one and the mounting holes two are used in cooperation, the silica gel pad 3 and the like can be installed and used, the telescopic end of the air cylinder 5 is slidably connected with the cylinder cover plate 4, the telescopic end of the air cylinder 5 is fixedly connected with the middle part of the silica gel pad 3, and the middle part of the silica gel pad 3 can be driven to bulge through the telescopic action of the air cylinder 5.

[0025] As shown in the figure, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 As shown in the figure, the inner wall of the air inlet hole 2 is fixedly connected with a fixed rod 7, the upper side of the fixed rod 7 is welded with a connecting spring 8, the other end of the connecting spring 8 is welded with a filter screen 9, the filter screen 9 is slidably connected with the air inlet hole 2, the upper end of the filter screen 9 is fixedly connected with an end buckle 11, the end buckle 11 is slidably connected with the air inlet hole 2, the inner wall of the air inlet hole 2 is fixedly connected with two symmetrical limiting blocks 12, through the setting of the filter screen 9, the impurities in the flowing gas can be filtered out, and under the action of the end buckle 11 and the connecting spring 8, the filter screen 9 can be pulled away from the air inlet hole 2, so that the impurities can be cleaned comprehensively.

[0026] As shown in the figure, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 As shown in the figure, the filter screen 9 is circular as a whole, the filter screen 9 is a stainless steel wire dense woven mesh, through the setting of the stainless steel wire dense woven mesh, the filter screen 9 has good durability, the outer side of the filter screen 9 is fixedly sleeved with a moving ring 10, the moving ring 10 is slidably connected with the air inlet hole 2, through the setting of the moving ring 10, the stability of the movement of the filter screen 9 can be ensured, each limiting block 12 is in contact with the moving ring 10, and each limiting block 12 is in contact with the filter screen 9, through the setting of the limiting block 12, the filter screen 9 can be limitedly used.

[0027] The specific implementation process of the utility model is as follows: when inflating, under the deformation action of the spring 6, the spring 6 abuts against the silica gel pad 3 to move downward, so that the air inlet hole 2 is in an open state to form a loop, when pressure maintaining, under the telescopic action of the air cylinder 5, the silica gel pad 3 can be lifted up, so that the middle part of the silica gel pad 3 bulges and is attached to the air inlet hole 2, the gas is cut off and sealed, the air tightness is controlled, and the sealing performance is improved.

[0028] During the inflation process, the particulate impurities in the gas can be filtered out by the filter screen 9, avoiding affecting the subsequent structural parts, and under the action of the limiting block 12, the filter screen 9 can be limited to ensure stability when the gas impacts, the end buckle 11 can be pulled to move upwards to drive the filter screen 9 to move, thereby driving the moving ring 10 to slide along the inner wall of the air inlet hole 2, the connecting spring 8 is deformed, and finally the filter screen 9 is separated from the air inlet hole 2, so as to facilitate the operator to clean the impurities attached to the filter screen 9.

[0029] The present scheme cooperates the structures of the air cylinder 5, the silica gel pad 3 and the spring 6, when inflating, the spring 6 abuts against the silica gel pad 3 to form a loop, when pressure maintaining, the air cylinder 5 can lift the silica gel pad 3, so that the middle part of the silica gel pad 3 is bulged and adheres to the air inlet hole 2, to cut off and seal the gas, so that the air tightness is controlled and the sealing performance is improved.

[0030] It should be pointed out that in the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between the two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, some modifications and improvements can be made, which should be regarded as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. High sealing one-way stop valve comprising a body, characterized in that: The upper end of the body is provided with an air inlet hole, the upper end of the body is provided with an air outlet hole right of the air inlet hole, the lower end of the body is in contact with a silica gel pad, the lower end of the silica gel pad is provided with a cylinder head plate, the lower end of the cylinder head plate is fixedly installed with a cylinder, the telescopic end of the cylinder is fixedly welded with a spring, the spring is fixedly connected with the middle part of the silica gel pad, and the other end of the spring is welded with the body.

2. The high seal type one-way stop valve according to claim 1, characterized by: The upper end of the body is provided with four mounting holes one arranged in a ring array, and the surface of the silica gel pad is provided with four mounting holes two arranged in a ring array.

3. The high seal type one-way stop valve according to claim 1, characterized by: The telescopic end of the cylinder is in sliding connection with the cylinder head plate, and the telescopic end of the cylinder is fixedly connected with the middle part of the silica gel pad.

4. The high seal one-way stop check valve according to claim 1, wherein: The inner wall of the air inlet hole is fixedly connected with a fixed rod, the upper side of the fixed rod is welded with a connecting spring, the other end of the connecting spring is welded with a filter screen, the filter screen is in sliding connection with the air inlet hole, the upper end of the filter screen is fixedly connected with an end buckle, the end buckle is in sliding connection with the air inlet hole, and the inner wall of the air inlet hole is fixedly connected with two symmetrical limiting blocks.

5. The high seal one-way stop check valve according to claim 4, wherein: The filter screen is circular as a whole, and is a stainless steel wire dense woven screen.

6. The high seal type one-way stop valve according to claim 4, characterized by: The outer side of the filter screen is fixedly sleeved with a moving ring, and the moving ring is in sliding connection with the air inlet hole.

7. The high seal one-way stop check valve according to claim 4, wherein: Each limiting block is in contact with the moving ring, and each limiting block is in contact with the filter screen.

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