Isolating valve

Abstract

The isolating valve is used for being arranged between different cavities and comprises a valve body, a valve deck, a driving device, a pressing plate, a pressing rod and a sealing ring, a first cavity, a second cavity and a channel are formed in the valve body, the second cavity is located below the first cavity, the valve body forms a supporting face, the channel penetrates through the valve body in the front-back direction, and a film penetrates through the channel. The contour of the projection of the second cavity in the front-back direction covers the contour of the projection of the channel in the front-back direction; the valve cover is hermetically arranged on the valve body; the driving device is arranged on the valve cover; the pressing plate is located in the valve body and has the shape matched with that of the second cavity. The pressing rod is connected to the driving device, penetrates through the valve deck downwards in a sealed mode, enters the valve body and is connected to the pressing plate. The sealing ring is in a closed ring shape and arranged on the pressing plate, and the sealing ring extends along the bottom, matched with the second cavity, of the pressing plate and the appearance in the left-right direction and extends along the portion, opposite to the two sides, surrounding the second cavity, of the supporting face in the left-right direction and the side direction in the front-back direction, of the pressing plate.

Description

Technical Field

[0001] The present disclosure relates to the field of thin film coating, and more particularly to a blocking valve. Background Art

[0002] The isolation valve is used for isolation of vacuum film equipment. It is suitable for a wide and flat cavity channel between two chambers. It can connect or disconnect the two chambers and switch between these two states.

[0003] When isolating two chambers, the isolation valves currently on the market need to remove the film material passing through the valve body in advance, or the integrity of a section of the material will be destroyed.

[0004] Chinese patent document CN215404501U, authorized for publication on January 4, 2022, discloses a cabin partition valve for a vacuum winding coating equipment, which uses a long cylindrical sealing rubber roller on one side of the film outside the cabin passage outlet to press the film against the sealing groove surface of the cabin passage outlet from a direction inclined to the direction of the film traveling to the cabin passage outlet, thereby blocking the entire cabin passage.

[0005] When the technology of this patent document is adopted, since the cabin partition valve is arranged at the outlet of the cabin passage, the vacuum winding coating equipment containing the cabin partition valve will be large in size.

[0006] By adopting the technology of this patent document, since the long cylindrical sealing rubber roller presses the film against the sealing groove surface of the cabin passage outlet in a direction inclined to the direction of the film traveling to the cabin passage outlet, it will cause the stroke of the piston of the pressure relief cylinder to be large, which is not only not conducive to reducing the volume of the vacuum winding coating equipment containing the cabin partition valve, but also not conducive to the speed of the cabin partition valve to isolate the cabin passage outlet.

[0007] In addition, the technology of the patent document adopts a long cylindrical sealing rubber roller, which is only applicable to the two-dimensional shape of the opening of the cabin passage and is difficult to adapt to all-round sealing in the three-dimensional direction. Utility Model Content

[0008] In view of the problems existing in the background technology, an object of the present disclosure is to provide a cut-off valve, which can reduce the occupied space, thereby facilitating the volume of a thin film plating device using the cut-off valve.

[0009] Another object of the present disclosure is to provide a shutoff valve that can adapt to all-round sealing in three-dimensional directions.

[0010] Thus, a partition valve is provided, which is used to be arranged between different chambers. The partition valve includes a valve body, a valve cover, a driving device, a pressure plate, a pressure rod, and a sealing ring. The valve body is provided with a first cavity, a second cavity and a channel. The second cavity is connected to the bottom of the first cavity. The contour of the projection of the first cavity in the up-down direction covers the contour of the projection of the second cavity in the up-down direction. The part of the contour of the projection of the first cavity in the up-down direction of the valve body that is located outside the contour of the projection of the second cavity in the up-down direction forms a supporting surface. The channel penetrates the valve body in the front-to-back direction, connects with the second cavity and allows the film to pass through. The contour of the projection of the second cavity in the front-to-back direction covers the contour of the projection of the channel in the front-to-back direction. The valve cover is sealed on the valve body. The driving device is arranged on the valve cover. The pressure plate is located in the valve body. The contour of the projection of the pressure plate in the up-down direction covers the contour of the projection of the second cavity in the up-down direction. The projected contour has an outer shape that matches the second cavity; the pressure rod is connected to the driving device, seals downward through the valve cover, enters the valve body and is connected to the pressure plate; the sealing ring is a closed ring, and the sealing ring is arranged on the pressure plate. The sealing ring extends along the bottom of the pressure plate that matches the second cavity and the outer shape in the left and right directions and extends along the parts of the pressure plate that are opposite to the left and right sides of the support surface surrounding the second cavity and the sides in the front and back directions; the pressure plate and the sealing ring are used for: when isolating different chambers, the pressure rod driven by the driving device is driven to move downward into the second cavity, so that the sealing ring presses the film on the outer shape of the bottom of the second cavity, the sealing ring is in sealing contact with the outer shape in the left and right directions of the second cavity, and the sealing ring is in sealing contact with the left and right sides of the support surface surrounding the second cavity and the sides in the front and back directions, so as to block the channel and cut off the connection between different chambers.

[0011] The beneficial effects of the present disclosure are as follows.

[0012] In the isolation valve disclosed in the present invention, the first cavity and the second cavity form a three-way valve with a step together with the channel and the supporting surface. The pressure plate with the sealing ring is inserted into the second cavity along the up and down directions to press the film to isolate the channel. The isolation valve can reduce the space occupied by the technology in the patent literature of the background technology, which is beneficial to the volume of the film coating equipment using the isolation valve.

[0013] The technology of the patent document of the background technology uses a long cylindrical sealing rubber roller, which can only be applied to the two-dimensional shape of the opening of the cabin passage. In the isolation valve disclosed in the present invention, there is no need to change the shape of the channel (that is, the shape of the channel can maintain the shape of the existing wide and flat cavity channel applicable to the background technology). The three-dimensional sealing surface is formed by the outer shape of the second cavity inside the valve body and the support surface. The sealing ring is arranged along the pressure plate in a corresponding three-dimensional manner. When the pressure plate is inserted into the second cavity along the up and down direction with the sealing ring to press the film to isolate the channel, the sealing ring forms an all-round seal in the three-dimensional directions of the up and down direction, the left and right direction, and the front and back direction of the channel, thereby improving the reliability of the seal.

[0014] In addition, since the closed annular sealing ring is arranged along the pressure plate in a corresponding three-dimensional manner, when the sealing ring needs to be replaced, it is only necessary to remove the sealing ring from the pressure plate, which improves the convenience of replacing the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a perspective view of a block valve according to the present disclosure, wherein a membrane is shown.

[0016] Figure 2 yes Figure 1 Front view of.

[0017] Figure 3 yes Figure 2 Side view of.

[0018] Figure 4 yes Figure 1 A cross-sectional view of a device in which the membrane is not shown and the channels are shown in dotted lines.

[0019] Figure 5 yes Figure 1 A cross-sectional view of an embodiment of a blocking valve, wherein the membrane is shown and the channel is not sealed and blocked by a pressure plate and a sealing ring.

[0020] Figure 6 yes Figure 5 A front view of a valve body, a pressure plate and a sealing ring, wherein the film is not shown.

[0021] Figure 7 yes Figure 6 A cross-sectional view taken along line AA, wherein the channel is sealed and isolated by a pressure plate and a sealing ring.

[0022] Figure 8 yes Figure 6 Stereoscopic diagram.

[0023] Fig. 9 yes Figure 8 A perspective exploded view of the invention, wherein the film is not shown.

[0024] Fig.10 yes Figure 8 A three-dimensional exploded view from another angle.

[0025] Fig.11 yes Figure 5 A top perspective view of a valve body.

[0026] Fig.12 yes Fig.11 Top view of the .

[0027] Fig.13 yes Fig.11 A cross-sectional view made along line BB.

[0028] Fig.14 yes Figure 1 A cross-sectional view of another embodiment of a shut-off valve, wherein a membrane is shown, and a channel is sealed and shut off by a pressure plate and a sealing ring.

[0029] Fig.15 yes Fig.14 A front view of a valve body, a pressure plate and a sealing ring, wherein the film is not shown.

[0030] Fig.16 yes Fig.15 A cross-sectional view is made along line CC, in which the channel is sealed and isolated by a pressure plate and a sealing ring.

[0031] Fig.17 yes Fig.15 A perspective exploded view of the invention, wherein the film is not shown.

[0032] Fig.18 yes Fig.15 A three-dimensional exploded view from another angle.

[0033] Fig.19 yes Fig.14 A top perspective view of a valve body.

[0034] Fig. 20 yes Fig.19 Top view of the .

[0035] Fig.21 yes Fig. 20 A cross-sectional view made along the DD line.

[0036] The reference numerals are described as follows:

[0037] 100 Block valve 2 valve cover

[0038] D1 up and down direction 3 drive device

[0039] D2 front and rear direction 4 pressure plates

[0040] D3 left and right direction 41 substrate

[0041] 1 Valve body 411 lower surface

[0042] 11First cavity 411aFirst area

[0043] 12 Second cavity 411b Second area

[0044] 13 channels 42 protruding plate

[0045] 131 opening 421 bottom

[0046] 14 support surface 422 inclined side

[0047] W1 first wall G receiving groove

[0048] W2 second wall 5 compression rod

[0049] W3 bottom wall 6 sealing ring

[0050] J Connector 200 Film DETAILED DESCRIPTION

[0051] The accompanying drawings show embodiments of the present disclosure, and it will be understood that the disclosed embodiments are merely examples of the present disclosure, and the present disclosure can be implemented in various forms. Therefore, the specific details disclosed herein should not be interpreted as limiting, but merely as the basis for the claims and as a representative basis for teaching ordinary technicians in the field to implement the present disclosure in various ways.

[0052] Reference Figures 1 to 21 According to the present disclosure, the isolation valve 100 is used to be arranged between different chambers (not shown). The isolation valve 100 includes a valve body 1, a valve cover 2, a driving device 3, a pressure plate 4, a pressure rod 5, and a sealing ring 6.

[0053] The valve body 1 has a first cavity 11, a second cavity 12 and a channel 13. The second cavity 12 is connected to the lower part of the first cavity 11. The contour of the projection of the first cavity 11 in the vertical direction D1 covers the contour of the projection of the second cavity 12 in the vertical direction D1. The valve body 1 forms a support surface 14 at the portion of the contour of the projection of the first cavity 11 in the vertical direction D1 that is located outside the contour of the projection of the second cavity 12 in the vertical direction D1. The channel 13 penetrates the valve body 1 along the front-to-back direction D2, connects with the second cavity 12 and allows the film 200 to pass through. The contour of the projection of the second cavity 12 in the front-to-back direction D2 covers the contour of the projection of the channel 13 in the front-to-back direction D2. The valve cover 2 is sealed and arranged on the valve body 1. The driving device 3 is arranged on the valve cover 2. The pressing plate 4 is located in the valve body 1. The contour of the projection of the pressing plate 4 in the vertical direction D1 covers the contour of the projection of the second cavity 12 in the vertical direction D1 and has an outer shape that matches the second cavity 12. The pressure rod 5 is connected to the driving device 3, seals downward through the valve cover 2, enters the valve body 1 and is connected to the pressure plate 4. The sealing ring 6 is in a closed ring shape, and is arranged on the pressure plate 4. The sealing ring 6 extends along the bottom of the pressure plate 4 matching the second cavity 12 and the outer shape in the left-right direction D3, and along the portion of the pressure plate 4 opposite to the two sides of the support surface 14 in the left-right direction D3 and the side in the front-back direction D2 surrounding the second cavity 12. The pressure plate 4 and the sealing ring 6 are used to: when different chambers are separated, the pressure rod 5 driven by the driving device 3 is driven to move downward into the second cavity 12, so that the sealing ring 6 presses the film 200 on the outer shape of the bottom of the second cavity 12, the sealing ring 6 is in sealing contact with the outer shape in the left-right direction D3 of the second cavity 12, and the sealing ring 6 is in sealing contact with the two sides of the support surface 14 in the left-right direction D3 and the side in the front-back direction D2 surrounding the second cavity 12, so as to block the channel 13 and separate the communication between different chambers.

[0054] In the isolation valve 100 disclosed in the present invention, the first cavity 11 and the second cavity 12 together with the channel 13 and the support surface 14 form a three-way valve with steps. The pressure plate 4 with the sealing ring 6 is inserted into the second cavity 12 along the up and down direction D1 to press the film 200 to isolate the channel 13. The isolation valve 100 can reduce the space occupied by the technology of the patent literature of the background technology, which is beneficial to the volume of the coating equipment of the film 200 using the isolation valve 100.

[0055] The technology of the patent document of the background technology uses a long cylindrical sealing rubber roller, which can only be applied to the two-dimensional shape of the opening of the cabin passage. In the isolation valve 100 disclosed in the present invention, there is no need to change the shape of the channel 13 (that is, the shape of the channel 13 can maintain the shape of the existing wide and flat cavity channel mentioned in the background technology). By forming a three-dimensional sealing surface with the shape of the second cavity 12 and the support surface 14 inside the valve body 1, the sealing ring 6 is arranged along the pressure plate 4 in a corresponding three-dimensional manner. When the pressure plate 4 is inserted into the second cavity 12 along the up-down direction D1 with the sealing ring 6 to press the film 200 to isolate the channel 13, the sealing ring 6 forms an all-round seal in the three-dimensional directions of the up-down direction D1, the left-right direction D3 and the front-back direction D2 of the channel 13, thereby improving the reliability of the seal.

[0056] When a single-plane sealing surface uses a single flat sealing ring, a three-dimensional sealing surface needs to be sealed with multiple sealing rings. In the isolation valve 100 disclosed in the present invention, the closed annular sealing ring 6 is arranged along the pressure plate 4 in a corresponding three-dimensional manner, which can not only improve the reliability of the sealed three-dimensional sealing surface, but also reduce the number of sealing rings 6 during three-dimensional sealing.

[0057] In addition, since the closed annular sealing ring 6 is arranged along the pressure plate 4 in a corresponding three-dimensional manner, when the sealing ring 6 needs to be replaced, it is only necessary to remove the sealing ring 6 from the pressure plate 4, which improves the convenience of replacing the sealing ring 6.

[0058] It is noted that the sealing ring 6 of the present disclosure has a feature well known to those skilled in the art, namely, elastic deformation characteristics. The diameter and deformation degree (i.e., material selection) of the sealing ring 6 can be any suitable size and material, but it is preferred that the diameter is as small as possible while meeting the elastic deformation to block the channel 13 and press the film 200, so as to help reduce the volume of the isolation valve 100.

[0059] It is also noted that the "matching" of the pressure plate 4 having an outer shape that matches the second cavity 12 only requires that the sealing ring 6 is elastically deformed to achieve sealing, that is, the outer shape of the pressure plate 4 can be complementary to the outer shape that matches the second cavity 12, or can be different to a certain extent.

[0060] like Figures 5 to 13 as well as Figures 14 to 21As shown, in the example shown, the valve body 1 has two first walls W1, two second walls W2, a bottom wall W3 and a connecting body J. The two first walls W1 are opposite and spaced apart in the front-to-back direction D2. The two second walls W2 are opposite and spaced apart in the left-right direction D3. The upper ends of the two first walls W1 and the upper ends of the two second walls W2 are sealed and connected to the valve cover 2. The lower ends of the two first walls W1 and the lower ends of the two second walls W2 are integrally connected to the bottom wall W3. The connecting body J is integrally connected between the two first walls W1 in the front-to-back direction D2, between the two second walls W2 in the left-right direction D3, and with the bottom wall W3 in the up-down direction D1. The first cavity 11 is surrounded by the two first walls W1 and the two second walls W2. The second cavity 12 is surrounded by the connecting body J and the bottom wall W3. The support surface 14 is formed by the top surface of the connecting body J. The channel 13 penetrates through the two first walls W1 and the connecting body J along the front-to-back direction D2.

[0061] like Fig.13 and Fig.21 As shown, in the example shown, the bottom of the second cavity 12 is coplanar with the bottom of the channel 13. When the sealing ring 6 presses the film 200 on the outer shape of the bottom of the second cavity 12, the film 200 will not bend in the up-down direction D1, which can reduce the impact of pressing the film 200 on the quality of the film 200 when the channel 13 is sealed and separated.

[0062] The driving device 3 may be, for example but not limited to, a pneumatic device or an electric device.

[0063] In order to improve the uniformity of elastic deformation of the pressure plate 4 and the sealing ring 6 along the longitudinal direction, as shown in FIG. Figure 1 , Figure 2 and Figure 4 As shown, the driving device 3 and the pressure rod 5 are provided in multiple sets, and the multiple sets of driving devices 3 and pressure rods 5 are arranged at intervals from each other along the left-right direction D3.

[0064] like Figure 5 , Figure 7 , Fig. 9 , Fig.10 as well as Fig.14 , Figures 16 to 18 As shown, in the example shown, the pressing plate 4 has a base plate 41 and a protruding plate 42 .

[0065] The base plate 41 is fixedly connected to the lower end of the pressure rod 5; the lower surface 411 of the base plate 41 has a first area 411a, two sides of the first area 411a in the left-right direction D3, and a second area 411b on the side of the first area 411a in the front-to-back direction D2; the protruding plate 42 extends downward from the first area 411a of the lower surface 411 of the base plate 41; the outline of the projection of the protruding plate 42 in the front-to-back direction D2 covers the outline of the projection of the channel 13 in the front-to-back direction D2; the protruding plate 42 has a bottom surface 421 and two inclined side surfaces 422 respectively connecting the two ends of the bottom surface 421 in the left-to-right direction D3, and the bottom surface 421 and the two inclined side surfaces 422 of the protruding plate 42 match the shape of the second cavity 12; the sealing ring 6 extends along the bottom surface 421 and the two inclined side surfaces 422 of the protruding plate 42 and the second area 411b of the lower surface 411 of the base plate 41. The provision of two inclined side surfaces 422 is more conducive to the elastic deformation ability of the sealing ring 6 when the protrusion 42 of the pressure plate 4 is inserted into the second cavity 12 than using two vertical surfaces, thereby improving the reliability of the seal formed by the sealing contact between the sealing ring 6 and the second cavity 12 in the left-right direction D3.

[0066] Specifically, in one example, Figure 5 , Figure 7 , Fig. 9 and Fig.10 As shown, the base plate 41 and the protruding plate 42 of the pressure plate 4 form an inverted L shape; the base plate 41 has a portion that exceeds the protruding plate 42 along the front-to-back direction D2 and is adjacent to the opening 131 on one side of the front-to-back direction D2 of the channel 13; the portion of the second area 411b of the lower surface 411 of the base plate 41 that is on the side of the first area 411a in the front-to-back direction D2 corresponds to the portion of the base plate 41 that is adjacent to the opening 131 on one side of the front-to-back direction D2 of the channel 13. The portion of the base plate 41 that exceeds the protruding plate 42 along the front-to-back direction D2 and is adjacent to the opening 131 on one side of the front-to-back direction D2 of the channel 13 may be Figure 5 So adjacent Figure 5 The right side opening 131 may also be adjacent Figure 5 The left side opening 131 and Figure 5 Mirroring posture and structure, of course, the support surface 14 must also be adaptively changed accordingly.

[0067] Furthermore, if Fig. 9 and Fig.10 As shown, the sealing rings 6 are arranged in two sets, and each sealing ring 6 extends along the bottom surface 421 and two inclined side surfaces 422 of the protruding plate 42 and the second area 411b of the lower surface 411 of the base plate 41. Thus, the two sealing rings 6 provide double sealing, thereby enhancing the sealing effect and sealing reliability.

[0068] In another example, if Fig.14 , Figures 16 to 18 As shown, the pressure plate 4 is T-shaped; the base plate 41 has two parts that extend beyond the protruding plate 42 along the front-to-back direction D2 and are adjacent to the opening 131 on both sides of the front-to-back direction D2 of the channel 13; the parts on both sides of the left-right direction D3 of the first area 411a and on both sides of the front-to-back direction D2 of the first area 411a constitute two second areas 411b; the parts on both sides of the front-to-back direction D2 of the first area 411b of the lower surface 411 of the base plate 41 on the second area 411b of the lower surface 411 of the base plate 41 respectively correspond to the two parts of the base plate 41 adjacent to the opening 131 on both sides of the front-to-back direction D2 of the channel 13; the sealing ring 6 extends along the bottom surface 421 and the two inclined side surfaces 422 of the protruding plate 42 and one of the second areas 411b of the lower surface of the base plate 41. By adopting the T-shaped form, the pressure rod 5 and the protruding plate 42 can be aligned in the vertical direction D1, and the pressure rod 5 exerts a uniform force on the two parts of the base plate 41 that respectively exceed the protruding plate 42 in the front-to-back direction D2 and are adjacent to the openings 131 on both sides of the channel 13 in the front-to-back direction D2, and the assembly of the pressure plate 4 can avoid the directional limitation of the pressure plate 4 formed by the base plate 41 and the protruding plate 42 in an inverted L shape and avoid tilting, so that the assembly is convenient and the positioning is accurate. Further, the T-shape of the pressure plate 4 can be a symmetrical structure.

[0069] Furthermore, if Fig.17 and Fig.18 As shown, the sealing ring 6 is provided in two configurations, and each sealing ring 6 extends along the bottom surface 421 and the two inclined side surfaces 422 of the protruding plate 42 and a corresponding second area 411b of the lower surface 411 of the base plate 41. Thus, the two sealing rings 6 provide double sealing, thereby enhancing the sealing effect and the reliability of the sealing. Similarly, based on the aforementioned T-shaped form, the pressure rod 5 and the protruding plate 42 can be aligned in the up-down direction D1, and the pressure rod 5 exerts a uniform force on the two parts of the base plate 41 that respectively extend beyond the protruding plate 42 in the front-to-back direction D2 and are adjacent to the openings 131 on both sides of the channel 13 in the front-to-back direction D2, thereby enabling the two sealing rings 6 to achieve the same sealing effect, thereby improving the reliability of the sealing.

[0070] like Fig.10 and Fig.18 As shown, the pressing plate 4 has a receiving groove G for receiving the sealing ring 6, and the receiving groove G is arranged on the bottom surface 421 and the two inclined side surfaces 422 of the protruding plate 42 and the second area 411b of the lower surface 411 of the base plate 41. The arrangement of the receiving groove G improves the assembly convenience of the sealing ring 6, improves the reliability of the position positioning of the sealing ring 6, and further improves the sealing reliability of the sealing ring 6.

[0071] The above detailed description is used to describe multiple exemplary embodiments, but this document is not intended to be limited to the explicitly disclosed combinations. Therefore, unless otherwise stated, the various features disclosed herein can be combined together to form multiple additional combinations that are not shown for the sake of simplicity.

Claims

1. A cut-off valve, characterized in that: The isolating valve (100) is used to be arranged between different chambers. The isolating valve (100) comprises a valve body (1), a valve cover (2), a driving device (3), a pressure plate (4), a pressure rod (5), and a sealing ring (6). The valve body (1) comprises a first cavity (11), a second cavity (12) and a channel (13), wherein the second cavity (12) is connected to the bottom of the first cavity (11), the contour of the projection of the first cavity (11) in the vertical direction (D1) covers the contour of the projection of the second cavity (12) in the vertical direction (D1), the portion of the contour of the projection of the first cavity (11) in the vertical direction (D1) of the valve body (1) which is located outside the contour of the projection of the second cavity (12) in the vertical direction (D1) forms a support surface (14), the channel (13) penetrates the valve body (1) along the front-to-back direction (D2), connects to the second cavity (12) and allows the film (200) to pass through, and the contour of the projection of the second cavity (12) in the front-to-back direction (D2) covers the contour of the projection of the channel (13) in the front-to-back direction (D2); The valve cover (2) is sealingly arranged on the valve body (1); The driving device (3) is arranged on the valve cover (2); The pressure plate (4) is located in the valve body (1), and the contour of the projection of the pressure plate (4) in the up-down direction (D1) covers the contour of the projection of the second cavity (12) in the up-down direction (D1) and has an outer shape matching the second cavity (12); The pressure rod (5) is connected to the driving device (3), seals downward through the valve cover (2), enters the valve body (1) and is connected to the pressure plate (4); The sealing ring (6) is in a closed annular shape and is arranged on the pressing plate (4). The sealing ring (6) extends along the bottom of the pressing plate (4) matching the second cavity (12) and the outer shape in the left-right direction (D3) and along the part of the pressing plate (4) opposite to the sides of the supporting surface (14) in the left-right direction (D3) and the side in the front-back direction (D2) surrounding the second cavity (12); The pressure plate (4) and the sealing ring (6) are used to: when isolating different chambers, the pressure rod (5) driven by the driving device (3) moves downward into the second chamber (12), so that the sealing ring (6) presses the film (200) on the outer shape of the bottom of the second chamber (12), the sealing ring (6) is in sealing contact with the outer shape of the second chamber (12) in the left and right directions (D3), and the sealing ring (6) is in sealing contact with the supporting surface (14) on both sides of the second chamber (12) in the left and right directions (D3) and the side parts in the front and rear directions (D2), so as to block the channel (13) and isolate the different chambers from each other.

2. The isolating valve according to claim 1, characterized in that: The valve body (1) comprises two first walls (W1), two second walls (W2), a bottom wall (W3) and a connecting body (J); The two first walls (W1) are opposite to each other and spaced apart along the front-to-back direction (D2); The two second walls (W2) are opposite to each other and spaced apart along the left-right direction (D3); The upper ends of the two first walls (W1) and the upper ends of the two second walls (W2) are sealedly connected to the valve cover (2); The lower ends of the two first walls (W1) and the lower ends of the two second walls (W2) are integrally connected to the bottom wall (W3); The connecting body (J) is integrally connected between the two first walls (W1) in the front-to-back direction (D2), is integrally connected between the two second walls (W2) in the left-right direction (D3), and is integrally connected to the bottom wall (W3) in the up-down direction (D1); The first cavity (11) is surrounded by two first walls (W1) and two second walls (W2); The second cavity (12) is surrounded by the connector (J) and the bottom wall (W3); The support surface (14) is formed by the top surface of the connector (J); The channel (13) penetrates the two first walls (W1) and the connecting body (J) along the front-to-back direction (D2).

3. The isolation valve according to claim 1, characterized in that: The bottom of the second cavity (12) is coplanar with the bottom of the channel (13).

4. The isolation valve according to claim 1, characterized in that: The driving device (3) and the pressure rod (5) are arranged in multiple sets. A plurality of sets of driving devices (3) and pressure rods (5) are arranged at intervals from each other along the left-right direction (D3).

5. The isolation valve according to claim 1, characterized in that: The pressing plate (4) comprises a base plate (41) and a protruding plate (42). The base plate (41) is fixedly connected to the lower end of the pressure rod (5); The lower surface (411) of the substrate (41) has a first region (411a), two sides of the first region (411a) in the left-right direction (D3), and a second region (411b) on the side of the first region (411a) in the front-back direction (D2); The protruding plate (42) extends downward from a first area (411a) of the lower surface (411) of the base plate (41); The contour of the projection of the protruding plate (42) in the front-rear direction (D2) covers the contour of the projection of the channel (13) in the front-rear direction (D2); The protruding plate (42) has a bottom surface (421) and two inclined side surfaces (422) respectively connected to both ends of the bottom surface (421) in the left-right direction (D3); the bottom surface (421) and the two inclined side surfaces (422) of the protruding plate (42) match the shape of the second cavity (12); The sealing ring (6) extends along the bottom surface (421) and two inclined side surfaces (422) of the protruding plate (42) and the second area (411b) of the lower surface (411) of the base plate (41).

6. The isolation valve according to claim 5, characterized in that: The base plate (41) and the protruding plate (42) of the pressing plate (4) form an inverted L shape; The base plate (41) has a portion extending beyond the protruding plate (42) in the front-rear direction (D2) and adjacent to the opening (131) on one side of the passage (13) in the front-rear direction (D2); The portion of the second region (411b) of the lower surface (411) of the substrate (41) on the side of the first region (411a) in the front-to-back direction (D2) corresponds to a portion of the substrate (41) adjacent to the opening (131) on one side of the channel (13) in the front-to-back direction (D2).

7. The isolation valve according to claim 6, characterized in that: The sealing ring (6) is provided in two sets. Each sealing ring (6) extends along the bottom surface (421) and two inclined side surfaces (422) of the protruding plate (42) and the second area (411b) of the lower surface (411) of the base plate (41).

8. The isolation valve according to claim 5, characterized in that: The pressing plate (4) is T-shaped; The base plate (41) has two parts which respectively extend beyond the protruding plate (42) in the front-to-back direction (D2) and are adjacent to the opening (131) on both sides of the channel (13) in the front-to-back direction (D2); Two second regions (411b) are formed at both sides of the first region (411a) in the left-right direction (D3) and at both sides of the first region (411a) in the front-back direction (D2); The portions of the second region (411b) of the lower surface (411) of the substrate (41) on both sides of the first region (411a) in the front-to-back direction (D2) respectively correspond to the two portions of the substrate (41) adjacent to the opening (131) on both sides of the channel (13) in the front-to-back direction (D2); The sealing ring (6) extends along the bottom surface (421) and two inclined side surfaces (422) of the protruding plate (42) and one of the second regions (411b) of the lower surface (411) of the base plate (41).

9. The isolation valve according to claim 8, characterized in that: The sealing ring (6) is provided in two settings, Each sealing ring (6) extends along the bottom surface (421) and two inclined side surfaces (422) of the protruding plate (42) and a corresponding second area (411b) of the lower surface (411) of the base plate (41).

10. The isolation valve according to claim 5, characterized in that: The pressing plate (4) has a receiving groove (G) for receiving the sealing ring (6). The receiving groove (G) is arranged on the bottom surface (421) and two inclined side surfaces (422) of the protruding plate (42) and the second area (411b) of the lower surface (411) of the base plate (41).

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