CN221838655U - A replaceable reversing valve and cylinder system - Google Patents

Abstract

The utility model discloses a replaceable reversing valve and cylinder system, which relates to the technical field of cylinders, and comprises: a shell, which is used to be arranged on a cylinder housing, the shell has a through hole, and the first end of the through hole is blocked by a cover; the shell is provided with three radial holes, including a first hole, a second hole and a third hole; a striker, which is axially movable and arranged in the through hole, and a connecting hole is provided inside the striker; an elastic member is provided in the through hole, which is used to push the striker to move toward the second end; when the striker is moved by the thrust of the elastic member so that the middle part of the striker is clamped on the inner end surface of the through hole, the outer end of the striker passes through the through hole and reaches the outside of the through hole, and the air-containing cavity between the cover and the striker is connected to the third hole through the connecting hole, and the radial gap between the through hole and the striker is connected to the first hole and the second hole; when the outer end of the striker is squeezed and retracted into the through hole, the elastic member is compressed, and the radial gap between the through hole and the striker is connected to the second hole and the third hole. The reversing valve has a simple structure and can work by being directly inserted into the wall of the cylinder housing.

Description

A replaceable reversing valve and cylinder system

Technical Field

The utility model relates to the technical field of cylinders, and more specifically, to a replaceable reversing valve. In addition, the utility model also relates to a cylinder system comprising the replaceable reversing valve.

Background Art

In the glue coating industry, mechanical reversing is widely used because of its fast response speed and simpler control. The existing reversing valves on the market are often highly integrated with the cylinder and cannot be replaced, or form an independent valve body device; or use the standard mechanical reversing valve on the market, and make additional auxiliary connections through the air pipe, which is cumbersome to install.

In summary, how to provide a reversing valve that is easy to use is a problem that needs to be solved urgently by those skilled in the art.

Utility Model Content

In view of this, the purpose of the utility model is to provide a replaceable reversing valve, which can achieve a quick replacement state and has an independent structure and is easy to maintain.

Another object of the utility model is to provide a cylinder system comprising the replaceable reversing valve.

In order to achieve the above purpose, the utility model provides the following technical solutions:

A replaceable reversing valve, comprising:

A shell, used to be arranged on the cylinder housing, the shell having a through hole, the first end of which is blocked by a cover member; the shell is provided with three radial holes connected to the through hole, including a first hole, a second hole and a third hole arranged in sequence from the first end to the second end of the through hole, respectively used to connect different channels on the cylinder housing;

A striker is axially movable in the through hole, wherein a connecting hole is provided inside the striker; an elastic member is provided in the through hole for pushing the striker to move toward the second end;

When the striker is moved by the thrust of the elastic member so that the middle part of the striker is engaged with the inner end surface of the through hole, the outer end of the striker passes through the through hole and reaches the outside of the through hole, the air-containing cavity between the cover member and the striker is connected to the third hole through the connecting hole, and the radial gap between the through hole and the striker is connected to the first hole and the second hole;

When the outer end of the striker is squeezed and retracted into the through hole, the elastic member is compressed, and the radial gap between the through hole and the striker is connected to the second hole and the third hole.

Preferably, a fourth sealing ring is provided on the circumferential outer diameter of the housing and between the first hole and the second hole, for cooperating with the inner wall of the cylinder housing to achieve sealing between the first hole and the second hole.

Preferably, a second sealing ring is provided on the circumferential outer diameter of the housing and between the second hole and the third hole, for cooperating with the inner wall of the cylinder housing to achieve sealing between the second hole and the third hole.

Preferably, a first sealing ring is provided at the inner end of the striker to cooperate with the inner wall of the through hole to achieve sealing between the circumferential gap of the striker and the air-containing cavity.

Preferably, a third sealing ring is provided on the inner wall of the second end of the through hole, for cooperating with the striker to achieve sealing at the second end of the through hole.

Preferably, an annular sealing ring is provided in the middle of the striker, which is used to cooperate with the inner wall of the shell to seal between the second hole and the third hole.

Preferably, an elastic member mounting countersunk hole is provided at the inner end of the firing pin, and the elastic member partially extends into the elastic member mounting countersunk hole.

Preferably, the outer shell is provided with bolt holes, and the bolts in the bolt holes are used to connect the outer shell to the cylinder housing.

A cylinder system comprises a cylinder housing and a reversing valve arranged on the cylinder housing, wherein the reversing valve is the replaceable reversing valve described in any one of the above items.

The reversing valve is mounted on the cylinder housing, the first channel in the cylinder housing is aligned with the second hole, and the second channel in the cylinder housing is aligned with the third hole. The striker of the reversing valve is aligned with the piston of the cylinder. When the piston is away from the striker, so that the striker is moved to the first working state only by the force of the elastic member, there is no gas pressure in the flow channel from the first channel to the second hole, that is, there is no pneumatic pressure in the first air direction; there is gas pressure in the flow channel from the second channel to the third hole, that is, there is pneumatic pressure in the second air direction. At this time, the third hole and the connecting hole are in a connected state, so that the pneumatic pressure is transmitted to the air chamber, and a certain pressure is formed in the air chamber when the piston is maintained to push the striker toward the piston.

When the piston hits the striker, the striker moves toward the cover and squeezes the air chamber. At the same time, the circumferential gap between the striker and the through hole connects the first channel and the second channel of the cylinder housing, thereby forming a third air direction. The airflow in the second channel flows into the first channel through the circumferential gap, thereby completing the switching operation of the reversing valve.

After the reversal is completed, the piston will disengage from the striker, and the elastic member will reset the striker, so that the pressure in the first channel will be released through the air and the flow channel between the cylinder housing and the reversing valve, and the pressure in the second channel will return to the state where the auxiliary spring maintains the striker position through the air.

The replaceable reversing valve provided in the above scheme can form a reversing operation on the valve body through the cooperation of the striker, the elastic part and the piston, and at the same time, the airflow conduction work of the airflow channel can be completed by utilizing the setting of the striker and the flow channel. The reversing valve has a simple structure and can work by being directly inserted into the wall of the cylinder housing.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

FIG1 is a schematic diagram of the design structure of the reversing valve provided by the utility model;

FIG2 is a schematic structural diagram of a reversing valve provided by the utility model;

Fig. 3 is a cross-sectional view along the line A-A in Fig. 2;

FIG4 is a schematic diagram of the first working state of the utility model;

FIG5 is a schematic diagram of the second working state of the utility model;

FIG. 6 is a schematic diagram of the external structure of the reversing valve provided by the present utility model.

In Figures 1 to 6, the reference numerals include:

1. Covering part, 2. First sealing ring, 3. Pneumatic gland ring, 4. Second sealing ring, 5. Third sealing ring;

6. housing, 7. elastic member, 8. firing pin, 9. fourth sealing ring;

10. First air flow, 11. Second air flow, 12. Cylinder housing;

13. The third air direction;

18. Flow channel, 19. Bolt;

101. First hole, 102. Second hole, 103. Third hole, 104. Connecting hole, 105. Air chamber.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

The core of the utility model is to provide a replaceable reversing valve, which can realize a quick replacement state, has an independent structure and is easy to maintain.

Another core of the utility model is to provide a cylinder system including the replaceable reversing valve.

Please refer to FIG. 1 to FIG. 6 , a replaceable reversing valve includes: a housing 6 , a striker 8 , an elastic member 7 and a sealing member 1 .

The housing 6 is used to be arranged on the cylinder housing 12, specifically inserted into the through hole structure of the cylinder housing 12. The housing 6 has a through hole, the first end of which is blocked by the cover 1, thereby forming a cavity structure blocked on one side, and the cavity structure is used to set the striker 8. The through hole extends along the axial direction of the housing 6, so the axial direction of the through hole is the same as the axial direction of the housing 6, and preferably, the axial directions of the two are collinear.

The housing 6 is provided with three radial holes connected to the through hole, and the radial holes are all arranged along the radial direction of the housing 6. There are at least three radial holes, which are arranged in sequence along the axial direction, including a first hole 101, a second hole 102 and a third hole 103 arranged in sequence from the first end to the second end of the through hole, and are respectively used to connect different channels on the cylinder housing 12. It should be noted that the first hole 101, the second hole 102 and the third hole 103 are spaced apart in the axial direction and cannot be located at the same axial position. When the striker 8 moves in the axial direction, the three through holes need to correspond to different channels in the cylinder housing 12 or be temporarily closed by the wall of the cylinder housing 12.

The striker 8 is disposed in the through hole and can move axially along the through hole. A connecting hole 104 is disposed inside the striker 8. An elastic member 7 is disposed in the through hole to push the striker 8 to move toward the second end.

It should be noted that the inner surface of the shell 6 or the outer peripheral surface of the striker 8 may have an axially extending groove so that a radial gap is formed at the position where the two axial holes cooperate, thereby connecting the inner ends of two radial holes among the three radial holes. The position of the groove needs to be set according to the distance that the striker 8 moves in the through hole and the position between the three radial holes.

During the use of the reversing valve, there are at least two working states according to the position and state of the striker 8 .

In the first working state, the striker 8 moves toward the second end of the through hole due to the thrust of the elastic member 7, so that the end of the striker 8 extends out of the second end of the through hole, and at the same time, the middle part of the striker 8 is clamped on the inner end surface of the through hole. At this time, the outer end of the striker 8 passes through the through hole and is located outside the through hole, and an air cavity 105 is formed between the cover member 1 and the striker 8. The air cavity 105 is connected with the third hole 103 through the connecting hole 104 on the striker 8, and the radial gap between the through hole and the striker 8 is connected with the first hole 101 and the second hole 102.

Please refer to Figures 3 and 4. The reversing valve is mounted on the cylinder housing 12. The first channel in the cylinder housing 12 is aligned with the second hole 102, and the second channel in the cylinder housing 12 is aligned with the third hole 103. The striker 8 of the reversing valve is aligned with the piston of the cylinder. When the piston is away from the striker 8, so that the striker 8 is moved to the first working state (Figure 4 state) only by the force of the elastic member 7, there is no gas pressure in the flow channel from the first channel to the second hole 102, that is, there is no pneumatic pressure in the first air direction 10; there is gas pressure in the flow channel from the second channel to the third hole 103, that is, there is pneumatic pressure in the second air direction 11. At this time, the third hole 103 and the connecting hole 104 are in a connected state, so that the pneumatic pressure is transmitted to the air chamber 105. When the piston 105 forms a certain pressure in the air chamber, the pushing force on the striker 8 toward the piston direction is maintained.

In the second working state, when the outer end of the striker 8 is squeezed back into the through hole, the elastic member 7 is compressed, and the radial gap between the through hole and the striker 8 communicates with the second hole 102 and the third hole 103 .

Please refer to Figure 5. When the piston hits the striker 8, the striker 8 moves toward the cover 1 and squeezes the air chamber 105. At the same time, the circumferential gap between the striker 8 and the through hole connects the first channel and the second channel of the cylinder housing 12, thereby forming a third air direction 13. The airflow in the second channel flows into the first channel through the circumferential gap, thereby completing the switching operation of the reversing valve.

After the reversal is completed, the piston will disengage from the striker 8, and the elastic member 7 will reset the striker 8, so that the pressure in the first channel will be released through the air path 10 and the flow channel 18 between the cylinder housing 12 and the reversing valve, and the pressure in the second channel will return to the state where the auxiliary spring maintains the position of the striker 8 through the air path 11.

The replaceable reversing valve provided in the above scheme can form a reversing operation on the valve body through the cooperation of the striker 8, the elastic member 7 and the piston, and at the same time, the airflow conduction work of the airflow channel can be completed by utilizing the setting of the striker 8 and the flow channel.

Based on the above embodiment, a fourth sealing ring 9 is provided on the circumferential outer diameter of the housing 6 and between the first hole 101 and the second hole 102 for cooperating with the inner wall of the cylinder housing 12 to achieve sealing between the first hole 101 and the second hole 102 .

Please refer to Figures 3 and 4, in which a fourth sealing ring 9 is provided at the lower part of the first hole 101 and the upper part of the second hole 102. The fourth sealing ring 9 is sleeved on the outside of the striker 8 to form an extrusion with the inner wall of the through hole, thereby forming a radial seal between the striker 8 and the through hole.

Based on any of the above embodiments, a second sealing ring 4 is provided on the circumferential outer diameter of the housing 6 and between the second hole 102 and the third hole 103 for cooperating with the inner wall of the cylinder housing 12 to achieve sealing between the second hole 102 and the third hole 103 .

Please refer to 3, wherein the second sealing ring 4 is sleeved on the outside of the striker 8 and is located between the second hole 102 and the third hole 103. Optionally, an annular groove may be provided on the inner wall surface of the through hole, and the second sealing ring 4 may be provided in the groove, so as to block the airflow on both sides of the second sealing ring 4 in the axial direction.

On the basis of any of the above embodiments, a first sealing ring 2 is provided at the inner end of the striker 8 for cooperating with the inner wall of the through hole to achieve sealing between the circumferential gap of the striker 8 and the air containing cavity 105 .

Optionally, a third sealing ring 5 is provided on the inner wall of the second end of the through hole, which is used to cooperate with the striker 8 to achieve sealing at the second end of the through hole.

It should be noted that the first sealing ring 2 and the third sealing ring 5 are respectively located close to the two end positions of the striker 8, and can be mainly used to separate the radial gap between the striker 8 and the through hole from the air chamber 105 and from the outside of the through hole, so that the airflow entering the radial gap from the first hole 101, the second hole 102 and the third hole 103 can flow through the radial gaps instead of directly entering the air chamber 105 or moving out of the port of the through hole.

Based on any of the above embodiments, an annular sealing ring is provided in the middle of the striker 8 to cooperate with the inner wall of the housing 6 to seal the second hole 102 and the third hole 103. The annular sealing ring may be a pneumatic gland ring.

Optionally, based on any one of the above embodiments, an elastic member mounting countersunk hole is provided at the inner end of the striker 8, and the elastic member 7 partially extends into the elastic member mounting countersunk hole.

Optionally, the outer shell 6 is provided with bolt holes, and the bolts 19 in the bolt holes are used to connect the outer shell 6 to the cylinder housing 12 .

Optionally, the housing 6 may be installed by other installation parts.

In the solution provided in the present application, the reversing valve is easy to disassemble and can be quickly replaced. In addition to fixing it, larger bolts can be replaced to push out the reversing valve.

For the scheme in any of the above embodiments, the above-mentioned sealing ring can be a sealing ring in a shape such as an O-ring. All sealing rings need to avoid the opening positions of the first channel and the second channel during installation. Because there are burrs at the opening positions, the surface of the burrs can easily scratch the sealing ring, causing an impact on the sealing effect. Therefore, avoiding the first channel and the second channel can avoid the possibility of being scratched by the burrs.

In addition to the main structure of the replaceable reversing valve provided in the above-mentioned embodiments and the connection relationship between the various parts, the utility model also provides a cylinder system including the replaceable reversing valve disclosed in the above-mentioned embodiments, the cylinder system includes a cylinder housing 12 and a reversing valve arranged on the cylinder housing 12. For the structure of the replaceable reversing valve and other parts of the cylinder system, please refer to the prior art and will not be repeated in this article.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

The replaceable reversing valve and cylinder system provided by the utility model are introduced in detail above. The principle and implementation method of the utility model are explained in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims (9)

1. A replaceable reversing valve, characterized by comprising: A shell (6) is used to be arranged on a cylinder housing (12), the shell (6) having a through hole, the first end of which is blocked by a cover member (1); the shell (6) is provided with three radial holes connected to the through hole, including a first hole (101), a second hole (102) and a third hole (103) arranged in sequence from the first end to the second end of the through hole, and respectively used to connect different channels on the cylinder housing (12); A striker (8) is axially movable and arranged in the through hole, and a connecting hole (104) is arranged inside the striker (8); an elastic member (7) is arranged in the through hole and is used to push the striker (8) to move toward the second end; When the striker (8) is moved by the thrust of the elastic member (7) so that the middle part of the striker (8) is engaged with the inner end surface of the through hole, the outer end of the striker (8) passes through the through hole and reaches the outside of the through hole, and the air chamber (105) between the cover member (1) and the striker (8) is connected to the third hole (103) through the connecting hole (104), and the radial gap between the through hole and the striker (8) is connected to the first hole (101) and the second hole (102); When the outer end of the striker (8) is squeezed back into the through hole, the elastic member (7) is compressed, and the radial gap between the through hole and the striker (8) communicates with the second hole (102) and the third hole (103). 2. The replaceable reversing valve according to claim 1 is characterized in that a fourth sealing ring (9) is provided on the circumferential outer diameter of the outer shell (6) and between the first hole (101) and the second hole (102), and is used to cooperate with the inner wall of the cylinder housing (12) to achieve sealing between the first hole (101) and the second hole (102). 3. The replaceable reversing valve according to claim 2 is characterized in that a second sealing ring (4) is provided on the circumferential outer diameter of the outer shell (6) and between the second hole (102) and the third hole (103), and is used to cooperate with the inner wall of the cylinder housing (12) to achieve sealing between the second hole (102) and the third hole (103). 4. The replaceable reversing valve according to claim 3 is characterized in that a first sealing ring (2) is provided at the inner end of the striker (8) for cooperating with the inner wall of the through hole to achieve sealing between the circumferential gap of the striker (8) and the air containing cavity (105). 5. The replaceable reversing valve according to claim 4 is characterized in that a third sealing ring (5) is provided on the inner wall of the second end of the through hole, which is used to cooperate with the striker (8) to achieve sealing at the second end of the through hole. 6. The replaceable reversing valve according to claim 5 is characterized in that an annular sealing ring is provided in the middle of the striker for cooperating with the inner wall of the housing (6) to seal between the second hole (102) and the third hole (103). 7. The replaceable reversing valve according to any one of claims 1 to 6, characterized in that an elastic member mounting countersunk hole is provided at the inner end of the striker (8), and the elastic member (7) partially extends into the elastic member mounting countersunk hole. 8. The replaceable reversing valve according to claim 7 is characterized in that the housing (6) is provided with bolt holes, and the bolts (19) in the bolt holes are used to connect the housing (6) to the cylinder housing (12). 9. A cylinder system, characterized in that it comprises a cylinder housing (12) and a reversing valve arranged on the cylinder housing (12), wherein the reversing valve is a replaceable reversing valve as claimed in any one of claims 1 to 8.