Rapid impact valve

Abstract

The rapid impact valve comprises a valve body, a valve rod and a movable valve plate, the valve body is cylindrical, the valve rod is movably arranged in the valve body in a penetrating mode, the outer wall of the movable valve plate is in sliding contact with the inner wall of the valve body, the movable valve plate is fixedly connected with the valve rod, a hydraulic opening is formed in the outer wall of the valve body, and the valve rod is fixedly connected with the valve body. A hydraulic port is formed in the outer wall of the valve body, a hydraulic cavity is formed between the interior of the valve body and the valve rod and communicated with the hydraulic port, a high-pressure port is further formed in the outer wall of the valve body, an air cavity is formed between the interior of the valve body and the valve rod and communicated with the high-pressure port, a piston cavity is further formed in the valve body, and the piston cavity is communicated with the high-pressure port. The piston cavity is located between the hydraulic cavity and the air cavity, a piston ring is arranged on the outer wall of the middle of the valve rod, the outer wall of the piston ring is in sliding contact with the inner wall of the piston cavity, the structure is simple, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to the field of valve equipment, in particular to a fast impact valve. Background Art

[0002] Airflow impact molding, also known as gas impact molding, is a new molding method. Its basic principle is to use airflow impact to make the molding sand pre-filled in the sand box complete the impact compaction process in a very short time. In the existing gas impact process, a compressed air tank with a preset pressure is set, and a valve plate is set at the air port of the compressed air tank. The high-pressure gas in the compressed air tank forms an airflow impact force by quickly opening and closing the valve plate. However, the existing valve plate opens too slowly, has a complex structure, and is difficult to maintain. Therefore, a simple and fast impact valve is needed so that the opening speed of the valve plate can meet the requirements of the gas impact process. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a fast impact valve for solving the technical problems in the prior art that the existing valve plate opens too slowly, has a relatively complex structure and is difficult to maintain.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a fast impact valve, comprising:

[0005] A valve body, wherein the valve body is cylindrical;

[0006] A valve stem is movably disposed in the valve body.

[0007] A movable valve plate, wherein the movable valve plate is cylindrical, an outer wall of the movable valve plate is in sliding contact with an inner wall of the valve body, and the movable valve plate is fixedly connected to the valve stem;

[0008] A hydraulic port is provided on the outer wall of the valve body, a hydraulic cavity is provided between the interior of the valve body and the valve stem, and the hydraulic cavity is connected to the hydraulic port;

[0009] A high-pressure port is also provided on the outer wall of the valve body, and an air cavity is provided between the interior of the valve body and the valve stem, and the air cavity is connected to the high-pressure port;

[0010] A piston cavity is also provided inside the valve body, and the piston cavity is located between the hydraulic cavity and the air cavity. A piston ring is provided on the outer wall of the middle part of the valve stem, and the outer wall of the piston ring is in sliding contact with the inner wall of the piston cavity.

[0011] The advantage of adopting the above technical solution is that it is possible to apply pressure at the hydraulic port, so that the piston ring, under the action of pressure, drives the valve stem to move in the direction away from the valve body, drives the movable valve plate away from the valve body, and the hydraulic port quickly releases pressure, and then high-pressure nitrogen is connected through the high-pressure port, so that the piston ring, under the action of pressure, drives the valve stem to move in the direction close to the valve body, quickly completes the opening of the valve, and meets the requirements of the air flushing process.

[0012] Optionally, the space of the hydraulic chamber is smaller than the space of the air chamber.

[0013] Optionally, the valve body comprises an upper valve body, a cylinder barrel, a lower valve body and a cylinder seat connected in sequence, an upper sealing assembly is provided at the port of the upper valve body, a lower sealing assembly is provided on the inner wall of the lower valve body, and an outer wall of the movable valve plate is in sliding contact with an inner wall of the cylinder seat;

[0014] The hydraulic chamber is located between the upper valve body and the valve stem, and the air chamber is located between the cylinder barrel and the valve stem.

[0015] Optionally, the hydraulic port is located on the upper valve body, and the high-pressure port is located on the lower valve body.

[0016] Optionally, a lubrication port is further provided on the cylinder seat, and the lubrication port is connected to the gap between the movable valve plate and the cylinder seat.

[0017] Optionally, a detection element is provided at the end of the valve stem extending from the upper valve body.

[0018] Optionally, the outer wall of the lower valve body is also provided with a mounting portion, the mounting portion is provided with a detection assembly, the detection assembly includes a detection rod, one end of the detection rod is installed on the mounting portion, the other end of the detection rod faces the upper valve body, and at least two detection switches are also provided on the detection rod along its length direction, and the detection switch is used to detect the detection element.

[0019] Optionally, the valve stem is a hollow structure.

[0020] Optionally, a sealing plate is further provided at one end of the valve stem away from the upper valve body. The sealing plate is fixed to the valve stem by bolts, and an edge of the sealing plate is connected to an edge of the movable valve plate.

[0021] Optionally, a partition is radially provided on the inner wall of the movable valve plate, and the inner ring edge of the partition is in contact with the outer wall of the valve stem.

[0022] As described above, a fast impact valve of the utility model has the following beneficial effects: it can be pressurized at the hydraulic port, so that the piston ring, under the action of pressure, drives the valve stem to move in the direction away from the valve body, drives the movable valve plate away from the valve body, and the hydraulic port quickly releases pressure, and then connects high-pressure nitrogen through the high-pressure port, so that the piston ring, under the action of pressure, drives the valve stem to move in the direction close to the valve body, and completes the rapid opening of the valve plate. It has a simple structure and a low cost, thereby realizing fast and efficient sand mold impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure shows a schematic diagram of a cross-sectional structure in a first viewing angle in one embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the structure of the second viewing angle in one embodiment of the utility model.

[0025] Part Number Description

[0026] 1 Valve body

[0027] 101 Upper valve body

[0028] 102 Cylinder

[0029] 103 lower valve body

[0030] 104 cylinder seat

[0031] 2 Valve stem

[0032] 201 Sealing plate

[0033] 3 Movable valve plate

[0034] 301 Bulkhead

[0035] 4 Buffer speed regulating valve

[0036] 10 Detection element

[0037] 12 Detection rod

[0038] 13 Detection switch

[0039] a Hydraulic port

[0040] b High pressure port

[0041] c Lubrication port

[0042] d Compressed air tank

[0043] e Casting DETAILED DESCRIPTION

[0044] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0045] See also Figure 1 to Figure 2 . It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the utility model in a schematic manner. The illustrations only show the components related to the utility model rather than being drawn according to the number, shape and size of the components during actual implementation. During implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complex. The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. They are not used to limit the restrictive conditions for the implementation of the utility model, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of the implementation of the present utility model without substantially changing the technical content.

[0046] See also Figure 1 to Figure 2 As shown, the utility model provides a fast impact valve, comprising:

[0047] A valve body 1, wherein the valve body 1 is cylindrical;

[0048] A valve stem 2, the valve stem 2 is movably arranged in the valve body 1,

[0049] A movable valve plate 3, wherein the movable valve plate 3 is cylindrical, an outer wall of the movable valve plate 3 is in sliding contact with an inner wall of the valve body 1, and the movable valve plate 3 is fixedly connected to the valve stem 2;

[0050] A hydraulic port a is provided on the outer wall of the valve body 1, and a hydraulic cavity is provided between the interior of the valve body 1 and the valve stem 2, and the hydraulic cavity is connected to the hydraulic port a;

[0051] A high-pressure port b is also provided on the outer wall of the valve body 1, and an air cavity is provided between the interior of the valve body 1 and the valve stem 2, and the air cavity is connected to the high-pressure port b;

[0052] A piston cavity is also provided inside the valve body 1, and the piston cavity is located between the hydraulic cavity and the air cavity. A piston ring is provided on the outer wall of the middle part of the valve stem 2, and the outer wall of the piston ring is in sliding contact with the inner wall of the piston cavity.

[0053] like Figure 1 As shown, when in use, the compressed air tank is set at d, and e is placed above the casting mold to be compacted. The hydraulic port a can be pressurized, so that the piston ring is driven by pressure to move the valve stem 2 toward the direction away from the valve body 1, and the movable valve plate 3 is driven away from the valve body 1. The hydraulic port a quickly releases pressure, and then the high-pressure nitrogen is connected through the high-pressure port b, so that the piston ring is driven by pressure to move the valve stem 2 toward the direction close to the valve body 1, and the valve plate is quickly opened. The gas in the compressed air tank can quickly form an airflow impact force, thereby realizing fast and efficient sand mold impact.

[0054] Exemplarily, the space of the hydraulic chamber is smaller than the space of the air chamber.

[0055] It should also be noted that the space of the hydraulic cavity is smaller than the space of the air cavity, and a closed oil and gas cylinder is used as its power source. It has the characteristics of compact structure and strong power, and can provide stable and continuous airflow impact force.

[0056] Exemplarily, the valve body 1 comprises an upper valve body 101, a cylinder barrel 102, a lower valve body 103 and a cylinder seat 104 connected in sequence, an upper sealing assembly is provided at the port of the upper valve body 101, a lower sealing assembly is provided on the inner wall of the lower valve body 103, and an outer wall of the movable valve plate 3 is in sliding contact with an inner wall of the cylinder seat 104;

[0057] The hydraulic chamber is located between the upper valve body 101 and the valve stem 2 , and the air chamber is located between the cylinder 102 and the valve stem 2 .

[0058] It should also be noted that a buffer speed regulating valve 4 is also provided on the upper valve body 101 , and the buffer speed regulating valve 4 is used to adjust the size of the space in the hydraulic cavity.

[0059] Exemplarily, the hydraulic port a is located on the upper valve body 101 , and the high-pressure port b is located on the lower valve body 103 .

[0060] It should also be noted that the hydraulic port a is arranged on the upper valve body 101 and the high-pressure port b is arranged on the lower valve body 103, so as to improve the pressure-bearing effect of the high-pressure port b and protect the structural stability of the piston chamber.

[0061] Exemplarily, a lubrication port c is further provided on the cylinder seat 104 , and the lubrication port is connected to the gap between the movable valve plate 3 and the cylinder seat 104 .

[0062] It should also be noted that, during the continuous friction between the movable valve plate 3 and the cylinder seat 104 , grease is added from the lubrication port to reduce the friction between the movable valve plate 3 and the cylinder seat 104 .

[0063] Exemplarily, a detection element 10 is provided at the end of the valve stem 2 extending from the upper valve body 101 .

[0064] Exemplarily, the outer wall of the lower valve body 2 is also provided with a mounting portion, and a detection component is provided on the mounting portion. The detection component includes a detection rod 12, one end of the detection rod 12 is installed on the mounting portion, and the other end of the detection rod 12 faces the upper valve body 101. At least two detection switches 13 are also provided on the detection rod 12 along its length direction, and the detection switch is used to detect the detection element 10.

[0065] It should also be noted that the movement of the valve stem 2 is detected to ensure that the valve plate is opened and closed in place, and that faults can be discovered and handled in a timely manner.

[0066] Exemplarily, the valve stem 2 is a hollow structure.

[0067] It should also be noted that the weight of the valve stem 2 is reduced.

[0068] Exemplarily, a sealing plate 201 is further provided at one end of the valve stem 2 away from the upper valve body 101 . The sealing plate 201 is fixed to the valve stem 2 by bolts, and an edge of the sealing plate 201 is connected to an edge of the movable valve plate 3 .

[0069] It should also be noted that a sealing plate is provided to drive the movable valve plate 3 to move and connect the movable valve plate 3 and the valve stem 2 .

[0070] Exemplarily, a partition plate 301 is further radially provided on the inner wall of the movable valve plate 3 , and the inner ring edge of the partition plate 301 is in contact with the outer wall of the valve stem 2 .

[0071] It should be further explained that the partition plate 301 is provided to change the size of the internal space of the movable valve plate 3 , adjust the size of the air cavity, and adjust the opening speed of the movable valve plate 3 .

[0072] To summarize, a fast impact valve of the utility model can be pressurized at the hydraulic port, so that the piston ring, under the action of pressure, drives the valve stem to move in the direction away from the valve body, drives the movable valve plate away from the valve body, and the hydraulic port quickly releases pressure, and then high-pressure nitrogen is connected through the high-pressure port, so that the piston ring, under the action of pressure, drives the valve stem to move in the direction close to the valve body, thereby completing the rapid opening of the valve plate. It has a simple structure and a low cost, thereby realizing rapid and efficient sand mold impact.

[0073] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A rapid impact valve, characterized in that: include: A valve body (1), wherein the valve body (1) is cylindrical; A valve stem (2), wherein the valve stem (2) is movably inserted into the valve body (1). A movable valve plate (3), the movable valve plate (3) is cylindrical, the outer wall of the movable valve plate (3) is in sliding contact with the inner wall of the valve body (1), and the movable valve plate (3) is fixedly connected to the valve stem (2); A hydraulic port (a) is provided on the outer wall of the valve body (1), a hydraulic cavity is provided between the interior of the valve body (1) and the valve stem (2), and the hydraulic cavity is connected to the hydraulic port (a); A high-pressure port (b) is also provided on the outer wall of the valve body (1), and an air cavity is provided between the interior of the valve body (1) and the valve stem (2), and the air cavity is connected to the high-pressure port (b); A piston cavity is also provided inside the valve body (1), and the piston cavity is located between the hydraulic cavity and the air cavity. A piston ring is provided on the outer wall of the middle part of the valve stem (2), and the outer wall of the piston ring is in sliding contact with the inner wall of the piston cavity.

2. A rapid impact valve according to claim 1, characterized in that: The space of the hydraulic chamber is smaller than the space of the air chamber.

3. A rapid impact valve according to claim 2, characterized in that: The valve body (1) comprises an upper valve body (101), a cylinder barrel (102), a lower valve body (103) and a cylinder seat (104) which are connected in sequence, the port of the upper valve body (101) is provided with an upper sealing assembly, the inner wall of the lower valve body (103) is provided with a lower sealing assembly, and the outer wall of the movable valve plate (3) is in sliding contact with the inner wall of the cylinder seat (104); The hydraulic chamber is located between the upper valve body (101) and the valve stem (2), and the air chamber is located between the cylinder barrel (102) and the valve stem (2).

4. A rapid impact valve according to claim 3, characterized in that: The hydraulic port (a) is located on the upper valve body (101), and the high-pressure port (b) is located on the lower valve body (103).

5. A rapid impact valve according to claim 4, characterized in that: A lubrication port is also provided on the cylinder seat (104), and the lubrication port is connected to the gap between the movable valve plate (3) and the cylinder seat (104).

6. A rapid impact valve according to claim 5, characterized in that: The end of the valve stem (2) extending from the upper valve body (101) is provided with a detection element (10).

7. A rapid impact valve according to claim 6, characterized in that: The outer wall of the lower valve body (103) is also provided with a mounting portion, and a detection component is provided on the mounting portion. The detection component includes a detection rod (12), one end of the detection rod (12) is mounted on the mounting portion, and the other end of the detection rod (12) faces the upper valve body (101). At least two detection switches (13) are also provided on the detection rod (12) along its length direction, and the detection switch (13) is used to detect the detection element (10).

8. A rapid impact valve according to claim 7, characterized in that: The valve stem (2) is a hollow structure.

9. A rapid impact valve according to claim 8, characterized in that: A sealing plate (201) is also provided at one end of the valve stem (2) away from the upper valve body (101); the sealing plate (201) is fixed to the valve stem (2) by bolts; and the edge of the sealing plate (201) is connected to the edge of the movable valve plate (3).

10. A rapid impact valve according to claim 9, characterized in that: The inner wall of the movable valve plate (3) is also radially provided with a partition plate (301), and the inner ring edge of the partition plate (301) is in contact with the outer wall of the valve stem (2).

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