Pneumatic reversing shuttle valve

Abstract

The utility model relates to the technical field of valves, in particular to a pneumatic reversing shuttle valve which comprises a main valve body, an auxiliary valve body and a cylinder body, the auxiliary valve body is detachably installed on the main valve body, and a material cavity used for arranging a piston shaft is arranged between the interior of the auxiliary valve body and the interior of the main valve body in a surrounding mode. The cylinder body is detachably installed on the secondary valve body, a piston cavity used for installing a piston is formed in the cylinder body, the piston shaft extends to one end of the piston cavity to be connected with the piston, and the main valve body comprises a material inlet D and a material outlet E which are communicated with the material cavity. The secondary valve body comprises a material outlet C communicated with the material cavity and a compressed air inlet B communicated with the piston cavity, and the cylinder body comprises a compressed air inlet A communicated with the piston cavity of the cylinder body. By applying the pneumatic reversing shuttle valve, multi-direction fast switching of the material flow direction can be achieved, and the pneumatic reversing shuttle valve has the advantages of being small in size, convenient to use, good in air tightness and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a pneumatic reversing shuttle valve. BACKGROUND

[0002] At present, when the flow direction of water, neutral gas and oily liquid and other materials is switched, the commonly used is pneumatic three-way ball valve, the pneumatic three-way ball valve belongs to one kind of valve, and can be divided into L type and T type, however, the pneumatic three-way ball valve is not designed integrally with pneumatic actuator and ball valve, not only has the problems of large volume, inconvenient installation and use in practical application, but also can only realize L direction material flow direction switching and has poor switching speed and air tightness.

[0003] Therefore, a pneumatic reversing shuttle valve is needed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a kind of pneumatic reversing shuttle valves to solve the problems of large volume, inconvenient installation and use, high cost, poor air tightness and unable to realize multidirectional rapid switching of material of existing pneumatic three-way ball valve in practical application.

[0005] The technical scheme of the utility model is as follows:

[0006] A kind of pneumatic reversing shuttle valve, including main valve body, secondary valve body and cylinder body;

[0007] The secondary valve body is detachably installed on the main valve body, and a material cavity for setting a piston shaft is surrounded between the inside thereof and the inside of the main valve body, the cylinder body is detachably installed on the secondary valve body, a piston cavity for installing a piston is opened in the inside of the cylinder body, one end of the piston shaft extends to the piston and is connected, the main valve body includes material inlet D and material outlet E communicated with the material cavity, the secondary valve body includes material outlet C communicated with the material cavity and compressed gas inlet B communicated with the piston cavity, and the cylinder body includes compressed gas inlet A communicated with the piston cavity.

[0008] Preferably, the material outlet E is arranged on the side of the main valve body, the material inlet D is arranged on the bottom of the main valve body, the material outlet C is arranged on the top of the secondary valve body, the compressed gas inlet B is arranged on the bottom of the secondary valve body, and the compressed gas inlet A is arranged on the side of the cylinder body opposite to the material outlet E.

[0009] Preferably, the material cavity is provided with an outlet gasket at one end of the material outlet E.

[0010] Preferably, a valve body sealing ring one is arranged at the joint of the main valve body and the secondary valve body, and a valve body sealing ring two is arranged on the end of the piston shaft in the material cavity and matched with the valve body sealing ring one.

[0011] Preferably, at least one piston sealing ring is arranged between the outer side wall of the piston and the inner side wall of the piston cavity.

[0012] Preferably, the piston shaft extends through the piston at one end of the piston cavity, and a protrusion matched with a groove on the piston is arranged on the shaft body close to the material cavity, and the end of the piston shaft extending into the piston cavity is connected with the piston through a piston nut.

[0013] Preferably, the inner surfaces of the material cavity and the piston cavity and the outer surfaces of the piston shaft and the piston are smooth surfaces.

[0014] Preferably, the main valve body and the secondary valve body are square, and the cylinder body is cylindrical.

[0015] Preferably, the secondary valve body is detachably installed on the main valve body through a valve body nut and a screw rod.

[0016] Preferably, the main valve body, the secondary valve body, the cylinder body, the piston shaft and the piston are made of stainless steel.

[0017] According to the above technical scheme, based on the pneumatic shuttle valve, in actual application, the piston is driven by gas to move left and right in the piston cavity, so that the material can be quickly switched in different directions, and the main valve body, the secondary valve body and the cylinder body are detachably connected, so that maintenance is facilitated, and the pneumatic shuttle valve has the advantages of small size, convenient use, low cost and good air tightness. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a sectional view of a pneumatic shuttle valve.

[0019] BRIEF DESCRIPTION OF DRAWINGS

[0020] 1, main valve body; 2, outlet gasket; 3, secondary valve body; 4, cylinder body; 5, piston nut; 6, piston sealing ring; 7, piston shaft; 8, valve body sealing ring one; 9, piston; 10, valve body sealing ring two; 11, valve body nut; 12, screw rod. DETAILED DESCRIPTION

[0021] The specific implementation of the embodiment of the present application is described in detail below. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiment of the present application, and is not used to limit the embodiment of the present application.

[0022] In the description of the present application, the term "comprising" and any variation thereof, means the non-exclusive inclusion, the possible existence or addition of one or more other features, units, components and / or combinations thereof.

[0023] In addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of 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.

[0024] The utility model provides a kind of pneumatic shuttle valve, as shown in it, the pneumatic shuttle valve includes main valve body 1, secondary valve body 3 and cylinder body 4; Figure 1 Secondary valve body 3 is detachably mounted on main valve body 1, and the inside thereof is surrounded with the inside of main valve body 1 to set up piston shaft 7 material cavity, cylinder body 4 is detachably mounted on secondary valve body 3, piston cavity for installing piston 9 is opened in the inside of cylinder body 4, one end of piston shaft 7 extends to the piston cavity and is connected with piston 9, main valve body 1 includes material inlet D and material outlet E communicated with material cavity, secondary valve body 3 includes material outlet C communicated with material cavity and compression gas inlet B communicated with piston cavity, cylinder body 4 includes compression gas inlet A communicated with its piston cavity.

[0025] Secondary valve body 3 is detachably mounted on main valve body 1, and the inside thereof is surrounded with the inside of main valve body 1 to set up piston shaft 7 material cavity, cylinder body 4 is detachably mounted on secondary valve body 3, piston cavity for installing piston 9 is opened in the inside of cylinder body 4, one end of piston shaft 7 extends to the piston cavity and is connected with piston 9, main valve body 1 includes material inlet D and material outlet E communicated with material cavity, secondary valve body 3 includes material outlet C communicated with material cavity and compression gas inlet B communicated with piston cavity, cylinder body 4 includes compression gas inlet A communicated with its piston cavity.

[0026] According to the above technical scheme, based on the pneumatic shuttle valve, in actual application, the piston is driven by gas to move left and right in the piston cavity, which can realize the rapid switching of materials in different directions, and by detachably connecting the main valve body, the secondary valve body and the cylinder body, maintenance is facilitated, and the advantages of small size, convenient use and low cost are achieved.

[0027] In the pneumatic shuttle valve described in the utility model, preferably, as shown in Figure 1As shown, the material outlet E is arranged at the side of the main valve body 1, the material inlet D is arranged at the bottom of the main valve body 1, the material outlet C is arranged at the top of the secondary valve body 3, the compressed gas inlet B is arranged at the bottom of the secondary valve body 3, and the compressed gas inlet A is arranged at the side of the cylinder body 4 opposite to the material outlet E. In actual application, when the compressed air is introduced into the compressed gas inlet A, the piston 9 moves from right to left in the piston cavity under the action of the gas pressure, thereby driving the piston shaft 7 connected therewith to move from right to left, until the end of the piston shaft 7 away from the piston cavity is sealed with the material outlet E, at this time, the material introduced from the material inlet D is discharged from the material outlet C; when the compressed air is introduced into the compressed gas inlet B, the piston 9 moves from left to right in the piston cavity under the action of the gas pressure, thereby driving the piston shaft 7 connected therewith to move from left to right, until the piston shaft 7 is sealed with the material outlet C, at this time, the material introduced from the material inlet D is discharged from the material outlet E; thereby realizing the rapid switching of the material in different directions. Specifically, the driving gas pressure is 0.3-0.5MPa, and the switching speed is less than 0.3s each time.

[0028] In the pneumatic reversing shuttle valve, preferably, the material cavity is provided with an outlet gasket 2 at one end of the material outlet E, so that the piston shaft 7 can better form a seal between the material outlet E, thereby improving the air tightness.

[0029] In another preferred embodiment, the material cavity is provided with a valve body sealing ring one 8 at the connection between the main valve body 1 and the secondary valve body 3, and the piston shaft 7 is provided with a valve body sealing ring two 10 matched with the valve body sealing ring one 8 at the end of the material cavity, so that the piston shaft 7 can better form a seal between the material outlet C, thereby improving the air tightness.

[0030] In another preferred embodiment, at least one piston sealing ring 6 is arranged between the outer side wall of the piston 9 and the inner side wall of the piston cavity, specifically, for example, two piston sealing rings 6 can be arranged at intervals, thereby further improving the air tightness and ensuring that the compressed gas introduced from the compressed gas inlet B can act on the piston 9, and then act on the piston shaft 7, thereby realizing the rapid switching of the material in different directions.

[0031] In the pneumatic reversing shuttle valve, preferably, the piston shaft 7 extends to the end of the piston cavity and penetrates the piston 9, and a protrusion matched with the groove on the piston 9 is arranged on the shaft body close to the material cavity, and the end of the piston shaft 7 extending into the piston cavity is connected with the piston 9 through a piston nut 5, thereby realizing the stable connection of the piston shaft 7 and the piston 9.

[0032] In the pneumatic reversing shuttle valve of this utility model, preferably, the inner surfaces of the material chamber and the piston chamber, as well as the outer surfaces of the piston shaft 7 and the piston 9, are all smooth surfaces, thereby reducing friction and better realizing the switching of materials in different directions.

[0033] In the pneumatic reversing shuttle valve of this utility model, preferably, the main valve body 1 and the secondary valve body 3 are both square, and the cylinder body 4 is cylindrical.

[0034] In the pneumatic reversing shuttle valve of this utility model, preferably, the secondary valve body 3 is detachably mounted on the main valve body 1 via valve body nuts 11 and screws 12. Specifically, there are four valve body nuts 11 and four screws 12.

[0035] In the pneumatic directional shuttle valve of this utility model, preferably, the main valve body 1, the secondary valve body 3, the cylinder body 4, the piston shaft 7, and the piston 9 are all made of stainless steel. In another preferred embodiment, the outlet gasket 2, the valve body sealing ring 1-8, and the valve body sealing ring 2-10 are all made of PTFE / PPL. The piston sealing ring 6 is made of VITTON. The piston nut 5, the valve body nut 11, and the screw 12 are all made of stainless steel. Specifically, the stainless steel is 304 stainless steel or 316L stainless steel.

[0036] The present invention will be described in detail below through embodiments, but the scope of protection of the present invention is not limited thereto.

[0037] Example 1

[0038] Adopting such Figure 1 The pneumatic shuttle valve shown is used to switch the flow direction of water, neutral gas, alcohol, oil, organic solvent, water vapor, chemical materials, weak acid and weak alkali solutions. Specifically, the pneumatic shuttle valve includes a main valve body 1, a secondary valve body 3 and a cylinder body 4.

[0039] The secondary valve body 3 is detachably mounted on the main valve body 1, and a material chamber for mounting the piston shaft 7 is formed between its interior and the interior of the main valve body 1. The cylinder body 4 is detachably mounted on the secondary valve body 3, and a piston chamber for mounting the piston 9 is formed inside the cylinder body 4. One end of the piston shaft 7 extends into the piston chamber and is connected to the piston 9. The main valve body 1 includes a material inlet D and a material outlet E communicating with the material chamber. The secondary valve body 3 includes a material outlet C communicating with the material chamber and a compressed air inlet B communicating with the piston chamber. The cylinder body 4 includes a compressed air inlet A communicating with its piston chamber.

[0040] Specifically, the material outlet E is arranged at the side of the main valve body 1, the material inlet D is arranged at the bottom of the main valve body 1, the material outlet C is arranged at the top of the secondary valve body 3, the compressed gas inlet B is arranged at the bottom of the secondary valve body 3, the compressed gas inlet A is arranged at the side of the cylinder body 4 opposite to the material outlet E; the piston shaft 7 extends to the end of the piston cavity and penetrates the piston 9, and a protrusion matched with the groove on the piston 9 is arranged on the shaft body close to the material cavity, and the end of the piston shaft 7 extending to the inside of the piston cavity is connected with the piston 9 through the piston nut 5; the inner surfaces of the material cavity and the piston cavity and the outer surfaces of the piston shaft 7 and the piston 9 are smooth surfaces; the main valve body 1 and the secondary valve body 3 are square, and the cylinder body 4 is cylindrical; the secondary valve body 3 is detachably arranged on the main valve body 1 through the valve body nut 11 and the screw rod 12; the main valve body 1, the secondary valve body 3, the cylinder body 4, the piston shaft 7 and the piston 9 are all made of stainless steel.

[0041] In actual application, the driving gas pressure is 0.4MPa, when the compressed air is input into the compressed gas inlet A, the piston 9 moves from right to left along the piston cavity under the action of the gas pressure, thereby driving the piston shaft 7 connected with the piston 9 to move from right to left, until the end of the piston shaft 7 away from the piston cavity is sealed with the material outlet E, at this time, the oil entering from the material inlet D is discharged from the material outlet C; when the compressed air is input into the compressed gas inlet B, the piston 9 moves from left to right along the piston cavity under the action of the gas pressure, thereby driving the piston shaft 7 connected with the piston 9 to move from left to right, until the piston shaft 7 is sealed with the material outlet C, at this time, the oil entering from the material inlet D is discharged from the material outlet E; thereby realizing the rapid switching of the oil in different directions within 0.3s.

[0042] Through detection, compared with the pneumatic three-way ball valve in the prior art, the pneumatic reversing shuttle valve has the advantages of small size, convenient use and low cost.

[0043] Example 2

[0044] Referring to example 1, different from example 1, the end of the material cavity located at the material outlet E is provided with an outlet gasket 2; the material cavity located at the connection between the main valve body 1 and the secondary valve body 3 is provided with a valve body sealing ring one 8, and the end of the piston shaft 7 located at the material cavity is provided with a valve body sealing ring two 10 matched with the valve body sealing ring one 8; two piston sealing rings 6 are arranged between the outer side wall of the piston 9 and the inner side wall of the piston cavity.

[0045] The pneumatic shuttle valve can further effectively improve air tightness compared with the scheme in the embodiment 1.

[0046] The pneumatic shuttle valve has the advantages of small size, convenient use, low cost and good air tightness.

[0047] The preferred embodiments of the utility model are described in detail above, but the utility model is not limited to this. Within the technical concept range of the utility model, the technical scheme of the utility model can be simply modified in many ways, and in order to avoid unnecessary repetition, the utility model will not be described again for various possible combination modes. However, these simple modifications and combinations should also be regarded as the disclosed content of the utility model, and all belong to the protection range of the utility model.

Claims

1. A pneumatically piloted shuttle valve characterized in that, The pneumatic shuttle valve comprises a main valve body (1), a secondary valve body (3) and a cylinder body (4); The secondary valve body (3) is detachably mounted on the main valve body (1), and a material cavity for arranging a piston shaft (7) is formed between the interior of the secondary valve body (3) and the interior of the main valve body (1); the cylinder body (4) is detachably mounted on the secondary valve body (3), and a piston cavity for mounting a piston (9) is formed in the interior of the cylinder body (4); the piston shaft (7) is connected with the piston (9) at one end extending into the piston cavity; the main valve body (1) comprises a material inlet D and a material outlet E which are in communication with the material cavity; the secondary valve body (3) comprises a material outlet C and a compressed gas inlet B which are in communication with the material cavity and the piston cavity respectively; and the cylinder body (4) comprises a compressed gas inlet A which is in communication with the piston cavity.

2. The pneumatic shuttle valve according to claim 1, characterized in that The material outlet E is arranged on the side of the main valve body (1), the material inlet D is arranged on the bottom of the main valve body (1), the material outlet C is arranged on the top of the secondary valve body (3), the compressed gas inlet B is arranged on the bottom of the secondary valve body (3), and the compressed gas inlet A is arranged on the side of the cylinder body (4) opposite to the material outlet E.

3. The pneumatic shuttle valve of claim 1, wherein, An outlet gasket (2) is arranged at one end of the material cavity located at the material outlet E.

4. The pneumatic shuttle valve of claim 1, wherein, A valve body sealing ring one (8) is arranged at the joint of the main valve body (1) and the secondary valve body (3) located in the material cavity, and a valve body sealing ring two (10) is arranged on the piston shaft (7) at the end of the material cavity and matched with the valve body sealing ring one (8).

5. The pneumatic shuttle valve according to any one of claims 1 to 4, characterized in that At least one piston sealing ring (6) is arranged between the outer side wall of the piston (9) and the inner side wall of the piston cavity.

6. The pneumatic shuttle valve of claim 1, wherein, The piston shaft (7) penetrates the piston (9) at one end extending into the piston cavity, and a protrusion matched with a groove on the piston (9) is arranged on the shaft body close to the material cavity, and the end of the piston shaft (7) extending into the piston cavity is connected with the piston (9) through a piston nut (5).

7. The pneumatic shuttle valve of claim 1, wherein, The inner surfaces of the material cavity and the piston cavity and the outer surfaces of the piston shaft (7) and the piston (9) are smooth surfaces.

8. The pneumatic shuttle valve of claim 1, wherein, The main valve body (1) and the secondary valve body (3) are square, and the cylinder body (4) is cylindrical.

9. The pneumatic reversing shuttle valve of claim 1, wherein, The secondary valve body (3) is detachably mounted on the main valve body (1) through a valve body nut (11) and a screw rod (12).

10. The pneumatic shuttle valve of claim 1, wherein, The main valve body (1), the secondary valve body (3), the cylinder body (4), the piston shaft (7) and the piston (9) are made of stainless steel.

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