Pre-embedded protective shell of self-closing valve

Abstract

The utility model relates to the field of gas self-closing valves, in particular to a pre-embedded protective shell of a self-closing valve. Comprising an open box type self-closing valve pre-embedded protective shell body, mounting holes are formed in the front side and the rear side of the open box type self-closing valve pre-embedded protective shell body, an opening and closing assembly is fixedly installed in a shell body on the left side of the open box type self-closing valve pre-embedded protective shell body, and a first fixing assembly is fixedly installed on the left side of the opening and closing assembly; positioning assemblies are fixedly mounted on the front side and the rear side of the opening and closing assembly; the top of the open box type self-closing valve pre-embedded protective shell body is fixedly provided with an anti-falling assembly, the right side of the anti-falling assembly is fixedly provided with a second fixing assembly, and the bottom of the open box type self-closing valve pre-embedded protective shell body is fixedly provided with a third fixing assembly. The technical problems that a self-closing valve is inconvenient to install and the protection effect is poor are solved.

Description

Technical Field

[0001] The utility model relates to the field of gas self - closing valves, in particular to a pre - buried protective shell for a self - closing valve. Background Art

[0002] In the field of gas self - closing valves, during the use of a gas self - closing valve, when installing the gas self - closing valve on a concealed gas pipeline, in order to prevent the gas self - closing valve from being damaged, it is necessary to pre - bury and protect the gas self - closing valve during installation. Therefore, a pre - buried protective shell for a self - closing valve is required.

[0003] In the prior art, it is generally an open - topped box - shaped shell. Since its side cannot be opened, when a user installs a gas self - closing valve into it through its opening, the operation of installing the gas self - closing valve into it through its opening may be restricted, which will increase the difficulty of installing the self - closing valve. And in the prior art, after installing the gas self - closing valve into it through its opening, since it cannot block the gas self - closing valve, when the gas self - closing valve becomes loose inside it, the gas self - closing valve may fall out of it, which may damage the gas self - closing valve and reduce its protective effect. Summary of the Invention

[0004] The utility model provides a pre - buried protective shell for a self - closing valve to solve the problems of inconvenient installation of the self - closing valve and poor protective effect in the prior art, which can facilitate the installation of the self - closing valve and improve the protective effect.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-closing valve pre-embedded protective shell, comprising an open box-type self-closing valve pre-embedded protective shell body, an opening is provided on the top of the open box-type self-closing valve pre-embedded protective shell body, mounting holes are provided on the front and rear sides of the open box-type self-closing valve pre-embedded protective shell body, an opening and closing assembly is fixedly installed inside the left shell body of the open box-type self-closing valve pre-embedded protective shell body for opening the left side of the open box-type self-closing valve pre-embedded protective shell body and closing the left side of the open box-type self-closing valve pre-embedded protective shell body when the gas self-closing valve is installed inside the open box-type self-closing valve pre-embedded protective shell body, a first threaded groove is provided on the front and rear sides of the open box-type self-closing valve pre-embedded protective shell body, The left side of the opening and closing assembly is fixedly installed with a first fixing assembly for fixing the opening and closing assembly, and the front and rear sides of the opening and closing assembly are fixedly installed with positioning assemblies for positioning the opening and closing assembly; the top of the open box type self-closing valve embedded protective shell body is respectively provided with a third thread groove and a second thread groove, and the top of the open box type self-closing valve embedded protective shell body is fixedly installed with an anti-falling assembly for preventing the gas self-closing valve from falling off from the open box type self-closing valve embedded protective shell body when the gas self-closing valve is loose inside the open box type self-closing valve embedded protective shell body, the right side of the anti-falling assembly is fixedly installed with a second fixing assembly for fixing the anti-falling assembly, and the bottom of the open box type self-closing valve embedded protective shell body is fixedly installed with a third fixing assembly for fixing the anti-falling assembly.

[0006] Furthermore, the opening and closing assembly includes a supporting horizontal shaft, which is fixedly installed inside the left shell of the open box-type self-closing valve embedded protective shell body. The outer surface of the supporting horizontal shaft is rotatably connected to a vertical box plate, which is movably installed inside the left shell of the open box-type self-closing valve embedded protective shell body.

[0007] Furthermore, the first fixing component includes a door-shaped rod, the right side of the door-shaped rod is fixedly installed on the left side of the vertical box plate, the door-shaped rod is movably connected to the main body of the embedded protective shell of the open box-type self-closing valve, and the rod body of the door-shaped rod is internally threadedly connected to the first screw, and the first screw is threadedly connected to the first thread groove.

[0008] Furthermore, the positioning assembly includes two first semicircular plates and two second semicircular plates, the rear side of one first semicircular plate and the rear side of one second semicircular plate are fixedly mounted on the front side of the vertical box plate, the front side of another first semicircular plate and the front side of another second semicircular plate are fixedly mounted on the rear side of the vertical box plate, and the two first semicircular plates and the two second semicircular plates are movably mounted inside the shell of the embedded protective shell body of the open box-type self-closing valve.

[0009] Further, the anti-dropping component includes a supporting vertical shaft, the bottom of the supporting vertical shaft is fixedly installed on the top of the main body of the embedded protective shell of the open box type self-closing valve, the top of the supporting vertical shaft is fixedly connected with a limiting column, the outer surface of the supporting vertical shaft is rotatably connected with a first limiting long rod, the first limiting long rod is rotatably connected with the main body of the embedded protective shell of the open box type self-closing valve and the limiting column respectively, a third screw rod is threadedly connected inside the first limiting long rod, and the third screw rod is threadedly connected with a third thread groove.

[0010] Further, the second fixing component includes a second limiting long rod, the left side of the second limiting long rod is fixedly installed on the right side of the first limiting long rod, and a second screw rod is threadedly connected inside the second limiting long rod.

[0011] Further, the third fixing component includes a supporting bottom plate, the top of the supporting bottom plate is fixedly installed on the bottom of the main body of the embedded protective shell of the open box type self-closing valve, the supporting bottom plate is rotatably connected with a vertical box plate, the top of the supporting bottom plate is fixedly connected with a supporting vertical plate, the supporting vertical plate is fixedly connected with the main body of the embedded protective shell of the open box type self-closing valve, and a fourth thread groove is opened at the top of the supporting vertical plate.

[0012] The working principle and usage principle of the present utility model are as follows: During the process of using this device, through the settings of the main body of the embedded protective shell of the open box type self-closing valve, the installation hole, the first thread groove, the opening and closing component, the first fixing component and the positioning component, this device can pre-embed and protect the gas self-closing valve. When the user installs the gas self-closing valve into the device through the opening of this device, the side part of this device can be opened, so that the operation of the user installing the gas self-closing valve into the device through the opening of this device will not be restricted, this device can avoid increasing the difficulty of installing the self-closing valve due to the restriction of the operation of the user installing the gas self-closing valve into the device through the opening of this device, this device can facilitate the installation of the self-closing valve, and during the process of using this device, through the settings of the main body of the embedded protective shell of the open box type self-closing valve, the third thread groove, the second thread groove, the anti-dropping component, the second fixing component and the third fixing component, after installing the gas self-closing valve into the device through the opening of this device, this device can block the gas self-closing valve, so that when the gas self-closing valve becomes loose inside this device, it can be prevented from falling out of this device, the gas self-closing valve can avoid being damaged and reducing the protection effect, and this device can improve the protection effect.

[0013] The beneficial technical effects of the present utility model are:

[0014] Through the settings of the main body of the embedded protective shell of the open box - type self - closing valve, the installation holes, the first thread groove, the opening - closing assembly, the first fixing assembly and the positioning assembly, the device can pre - bury and protect the gas self - closing valve. When the user installs the gas self - closing valve into the device through the opening of the device, the side of the device can be opened, making it convenient to install the self - closing valve. And through the settings of the main body of the embedded protective shell of the open box - type self - closing valve, the third thread groove, the second thread groove, the anti - detachment assembly, the second fixing assembly and the third fixing assembly, after installing the gas self - closing valve into the device through the opening of the device, the device can block the gas self - closing valve, thereby improving the protection effect. Brief Description of the Drawings

[0015] Figure 1 It is the first front - view three - dimensional schematic diagram of the present utility model;

[0016] Figure 2 It is the three - dimensional schematic diagram of the support horizontal axis of the present utility model;

[0017] Figure 3 It is the three - dimensional schematic diagram of the vertical box board of the present utility model;

[0018] Figure 4 It is the second front - view three - dimensional schematic diagram of the present utility model.

[0019] Description of the reference numerals: 1. Limit post; 2. Main body of the embedded protective shell of the open box - type self - closing valve; 3. Second thread groove; 4. First semi - circular plate; 5. Second semi - circular plate; 6. Vertical box board; 7. Support vertical shaft; 8. Support bottom plate; 9. Support vertical plate; 10. First screw; 11. U - shaped rod; 12. First limit long rod; 13. Third screw; 14. Second limit long rod; 15. Second screw; 16. Installation hole; 17. Support horizontal axis; 18. First thread groove; 19. Third thread groove; 20. Fourth thread groove. Detailed Description of the Embodiments

[0020] In order to make the technical means, creative features, achieved purposes and effects realized by the embodiments of the present application easy to understand, the embodiments of the present application will be further described below in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the embodiments of the present application and are not used to limit the embodiments of the present application.

[0021] Embodiment 1: As Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown: a self-closing valve embedded protective shell, including an open box type self-closing valve embedded protective shell body 2, a supporting horizontal axis 17, a door-shaped rod 11, two first semicircular plates 4 and two second semicircular plates 5, the top of the open box type self-closing valve embedded protective shell body 2 is provided with an opening, the front and rear sides of the open box type self-closing valve embedded protective shell body 2 are provided with mounting holes 16, the left side of the open box type self-closing valve embedded protective shell body 2 is fixedly installed with an opening and closing component for opening the left side of the open box type self-closing valve embedded protective shell body 2 and closing the left side of the open box type self-closing valve embedded protective shell body 2 when the gas self-closing valve is installed inside the open box type self-closing valve embedded protective shell body 2, the opening and closing component includes a supporting horizontal axis 17, and the supporting horizontal axis 17 is fixedly installed on the open box type self-closing valve embedded protective shell body 2. The left side of the shell body of the embedded protective shell of the open box type self-closing valve is inside the outer surface of the supporting horizontal axis 17, and the vertical box plate 6 is movably installed in the left side shell body of the embedded protective shell of the open box type self-closing valve. The front and rear sides of the embedded protective shell of the open box type self-closing valve are provided with a first threaded groove 18. The left side of the opening and closing assembly is fixedly installed with a first fixing assembly for fixing the opening and closing assembly. The first fixing assembly includes a door-shaped rod 11. The right side of the door-shaped rod 11 is fixedly installed on the left side of the vertical box plate 6. The door-shaped rod 11 is movably connected to the main body 2 of the embedded protective shell of the open box type self-closing valve. The rod body of the door-shaped rod 11 is threadedly connected with a first screw 10. The first screw 10 is threadedly connected to the first threaded groove 18. The front and rear sides of the opening and closing assembly are fixed. A positioning assembly is fixedly installed with a positioning opening and closing assembly, and the positioning assembly includes two first semicircular plates 4 and two second semicircular plates 5. The rear side of a first semicircular plate 4 and the rear side of a second semicircular plate 5 are both fixedly mounted on the front side of the vertical box plate 6, and the front side of another first semicircular plate 4 and the front side of another second semicircular plate 5 are both fixedly mounted on the rear side of the vertical box plate 6. The two first semicircular plates 4 and the two second semicircular plates 5 are both movably mounted on the inside of the shell of the open box type self-closing valve pre-buried protective shell body 2. Through the arrangement of the open box type self-closing valve pre-buried protective shell body 2, the mounting hole 16, the first threaded groove 18, the opening and closing assembly, the first fixing assembly and the positioning assembly, the opening and closing assembly can be moved toward the inside of the open box type self-closing valve pre-buried protective shell body 2 When installing the gas self-closing valve, the left side of the pre-buried protective shell body 2 of the open box-type self-closing valve is opened and the left side of the pre-buried protective shell body 2 of the open box-type self-closing valve is closed, so that the first fixing component can fix the opening and closing component, and the positioning component can position the opening and closing component, so that the device can pre-buried protection for the gas self-closing valve. When the user installs the gas self-closing valve into the interior of the device through the opening of the device, the side of the device can be opened, so that the user's operation of installing the gas self-closing valve into the interior of the device through the opening of the device will not be restricted, so that the device can avoid the difficulty of installing the self-closing valve due to the restriction of the user's operation of installing the gas self-closing valve into the interior of the device through the opening of the device, so that the device can easily install the self-closing valve.

[0022] In use, the initial state of the device is as follows: The first screw rod 10 is threadedly connected to the first thread groove 18 and the left side of the opening box type self-closing valve embedded protective shell body 2 is in a closed state. The third screw rod 13 is threadedly connected to the third thread groove 19, and one end of the second screw rod 15 is located inside the second limit long rod 14. When installing a gas self-closing valve on a concealed gas pipeline and when it is necessary to use this device for embedding and protecting the gas self-closing valve, first install the gas self-closing valve inside this device. When it is necessary to install the gas self-closing valve inside this device, rotate the first screw rod 10 to disconnect the first screw rod 10 from the first thread groove 18 and make one end of the first screw rod 10 located inside the rod body of the portal rod 11. Rotate the vertical box plate 6 so that the vertical box plate 6 rotates along the opening box type self-closing valve embedded protective shell body 2 and the support cross shaft 17 respectively, so that both the first semi-circular plate 4 and the second semi-circular plate 5 rotate out of the shell interior of the opening box type self-closing valve embedded protective shell body 2, and make the portal rod 11 rotate. When the vertical box plate 6 is rotated to the maximum angle, the vertical box plate 6 rotates from a vertical state to a horizontal state, and the left side of the opening box type self-closing valve embedded protective shell body 2 is opened, enabling the user to move the gas self-closing valve, and the gas self-closing valve is installed inside the opening box type self-closing valve embedded protective shell body 2 through the left side and the opening of the opening box type self-closing valve embedded protective shell body 2. Under the action of the left side of the opening box type self-closing valve embedded protective shell body 2 being opened, the operation of the user installing the gas self-closing valve into the opening box type self-closing valve embedded protective shell body 2 through the opening of the opening box type self-closing valve embedded protective shell body 2 can be avoided from being restricted. At this time, the gas self-closing valve can be installed inside this device.

[0023] After installing the gas self - closing valve inside this device, move this device so that the two gas pipelines pass through the installation holes 16 and enter the inside of the main body 2 of the embedded protective shell of the open - box - type self - closing valve, and install this device with the gas self - closing valve installed on the gas pipeline. Rotate the vertical box plate 6 in the reverse direction, so that the vertical box plate 6 rotates in the reverse direction along the main body 2 of the embedded protective shell of the open - box - type self - closing valve and the support cross - shaft 17 respectively, making the U - shaped rod 11 rotate in the reverse direction. When the vertical box plate 6 is rotated to the maximum angle in the reverse direction, both the first semi - circular plate 4 and the second semi - circular plate 5 rotate into the inside of the shell of the main body 2 of the embedded protective shell of the open - box - type self - closing valve. The vertical box plate 6 rotates from the horizontal straight state to the vertical state. The left side of the main body 2 of the embedded protective shell of the open - box - type self - closing valve is closed. The main body 2 of the embedded protective shell of the open - box - type self - closing valve is located inside the U - shaped rod 11. The first screw rod 10 corresponds to the first thread groove 18. Rotate the first screw rod 10 in the reverse direction so that the first screw rod 10 is thread - connected with the first thread groove 18. After the left side of the main body 2 of the embedded protective shell of the open - box - type self - closing valve is closed, under the action of the main body 2 of the embedded protective shell of the open - box - type self - closing valve and the vertical box plate 6, a protective space can be formed between the main body 2 of the embedded protective shell of the open - box - type self - closing valve and the vertical box plate 6, enabling the gas self - closing valve to be embedded and protected. At this time, this device can be used to embed and protect the gas self - closing valve. To sum up, this device can embed and protect the gas self - closing valve. When the user installs the gas self - closing valve inside this device through the opening of this device, the side of this device can be opened, so that the operation of the user installing the gas self - closing valve inside this device through the opening of this device will not be restricted, and this device can avoid increasing the difficulty of installing the self - closing valve due to the restriction of the operation of the user installing the gas self - closing valve inside this device through the opening of this device, making this device convenient for installing the self - closing valve.

[0024] Example 2: As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown: a self-closing valve embedded protective shell, including X, an open box type self-closing valve embedded protective shell body 2, a supporting vertical shaft 7, a second limiting long rod 14 and a supporting bottom plate 8, the top of the open box type self-closing valve embedded protective shell body 2 is respectively provided with a third thread groove 19 and a second thread groove 3, the top of the open box type self-closing valve embedded protective shell body 2 is fixedly installed with an anti-falling component to prevent the gas self-closing valve from falling off from the open box type self-closing valve embedded protective shell body 2 when the gas self-closing valve is loose inside the open box type self-closing valve embedded protective shell body 2, the anti-falling component includes a supporting vertical shaft 7, the bottom of the supporting vertical shaft 7 is fixedly installed on the top of the open box type self-closing valve embedded protective shell body 2, the supporting vertical shaft The top of 7 is fixedly connected to the limiting column 1, and the outer surface of the supporting vertical shaft 7 is rotatably connected to the first limiting long rod 12. The first limiting long rod 12 is rotatably connected to the open box type self-closing valve embedded protective shell body 2 and the limiting column 1 respectively. The internal thread of the first limiting long rod 12 is connected to the third screw 13, and the third screw 13 is threadedly connected to the third thread groove 19. The right side of the anti-falling component is fixedly installed with a second fixing component for fixing the anti-falling component. The second fixing component includes a second limiting long rod 14. The left side of the second limiting long rod 14 is fixedly installed on the right side of the first limiting long rod 12. The internal thread of the second limiting long rod 14 is connected to the second screw 15. The second screw 15 and the second screw The groove 3 is threadedly connected, and the bottom of the open box type self-closing valve embedded protective shell main body 2 is fixedly installed with a third fixing component for fixing the anti-falling component. The third fixing component includes a supporting bottom plate 8, and the top of the supporting bottom plate 8 is fixedly installed on the bottom of the open box type self-closing valve embedded protective shell main body 2. The supporting bottom plate 8 is rotatably connected to the vertical box plate 6. The top of the supporting bottom plate 8 is fixedly connected with a supporting vertical plate 9, and the supporting vertical plate 9 is fixedly connected to the open box type self-closing valve embedded protective shell main body 2. A fourth thread groove 20 is provided on the top of the supporting vertical plate 9, and the fourth thread groove 20 is threadedly connected to the third screw 13. Through the open box type self-closing valve embedded protective shell main body 2, the third thread groove 19, and the second thread The arrangement of the groove 3, the anti-falling component, the second fixing component and the third fixing component enables the anti-falling component to prevent the gas self-closing valve from falling out of the open box-type self-closing valve pre-embedded protective shell main body 2 when the open box-type self-closing valve pre-embedded protective shell main body 2 is loose, so that the second fixing component and the third fixing component can both fix the anti-falling component. After the gas self-closing valve is installed into the interior of the device through the opening of the device, the device can block the gas self-closing valve, so that the gas self-closing valve can be prevented from falling out of the interior of the device when the gas self-closing valve is loose inside the device, so that the gas self-closing valve can be prevented from being damaged and the protection effect can be reduced, so that the protection effect of the device can be improved.

[0025] In use, after installing the gas self-closing valve into the interior of this device through the opening of this device, and after the left side of the embedded protective shell body 2 of the open-box self-closing valve is closed, rotate the third screw 13 to disconnect the third screw 13 from the third thread groove 19 and make one end of the third screw 13 located inside the first limit long rod 12. Then rotate the first limit long rod 12 so that the first limit long rod 12 rotates along the embedded protective shell body 2 of the open-box self-closing valve, the support vertical shaft 7, and the limit column 1 respectively, causing the second limit long rod 14 to rotate. When the rotation angle of the first limit long rod 12 is 90 degrees, and when the third screw 13 corresponds to the fourth thread groove 20, the second screw 15 corresponds to the second thread groove 3. Both the second limit long rod 14 and the first limit long rod 12 are located above the gas self-closing valve and the second limit long rod 14 contacts the vertical box plate 6. Rotate the third screw 13 in the reverse direction to thread-connect the third screw 13 with the fourth thread groove 20, and rotate the second screw 15 to thread-connect the second screw 15 with the second thread groove 3. Under the action of the second limit long rod 14 and the first limit long rod 12, the gas self-closing valve installed inside the embedded protective shell body 2 of the open-box self-closing valve can be blocked, so that when the gas self-closing valve inside the embedded protective shell body 2 of the open-box self-closing valve becomes loose, it can be prevented from falling out of the interior of the embedded protective shell body 2 of the open-box self-closing valve, and the gas self-closing valve can be prevented from being damaged.

[0026] In summary, after installing the gas self-closing valve into the interior of this device through the opening of this device, this device can block the gas self-closing valve, so that when the gas self-closing valve becomes loose inside this device, it can be prevented from falling out of the interior of this device, the gas self-closing valve can be prevented from being damaged and thus reducing the protection effect, and this device can improve the protection effect.

[0027] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An embedded protective shell for a self - closing valve, comprising a main body (2) of an open - box - type embedded protective shell for a self - closing valve. An opening is provided at the top of the main body (2) of the open - box - type embedded protective shell for a self - closing valve, and mounting holes (16) are provided on both the front side and the rear side of the main body (2) of the open - box - type embedded protective shell for a self - closing valve. It is characterized in that: Inside the left shell of the embedded protective shell body (2) of the open-box self-closing valve, there is a opening and closing assembly for opening the left side of the embedded protective shell body (2) of the open-box self-closing valve and closing the left side of the embedded protective shell body (2) of the open-box self-closing valve when installing a gas self-closing valve inside the embedded protective shell body (2) of the open-box self-closing valve. First threaded grooves (18) are provided on both the front side and the rear side of the embedded protective shell body (2) of the open-box self-closing valve. A first fixing component for fixing the opening and closing assembly is fixedly installed on the left side of the opening and closing assembly, and positioning components for positioning the opening and closing assembly are fixedly installed on both the front side and the rear side of the opening and closing assembly; Third threaded grooves (19) and second threaded grooves (3) are respectively provided on the top of the embedded protective shell body (2) of the open-box self-closing valve. An anti-dropping component for preventing the gas self-closing valve from falling off from inside the embedded protective shell body (2) of the open-box self-closing valve when it loosens inside the embedded protective shell body (2) of the open-box self-closing valve is fixedly installed on the top of the embedded protective shell body (2) of the open-box self-closing valve. A second fixing component for fixing the anti-dropping component is fixedly installed on the right side of the anti-dropping component, and a third fixing component for fixing the anti-dropping component is fixedly installed on the bottom of the embedded protective shell body (2) of the open-box self-closing valve.

2. The embedded protective shell of a self-closing valve according to claim 1, characterized in that: The opening and closing assembly includes a support cross-axis (17), and the support cross-axis (17) is fixedly installed inside the left shell of the embedded protective shell body (2) of the open-box self-closing valve. A vertical box plate (6) is rotatably connected to the outer surface of the support cross-axis (17), and the vertical box plate (6) is movably installed inside the left shell of the embedded protective shell body (2) of the open-box self-closing valve.

3. An embedded protective shell for a self-closing valve according to claim 1 or 2, characterized in that: The first fixing component includes a U-shaped rod (11), and the right side of the U-shaped rod (11) is fixedly installed on the left side of the vertical box plate (6). The U-shaped rod (11) is movably connected to the embedded protective shell body (2) of the open-box self-closing valve. A first screw rod (10) is threadedly connected inside the rod body of the U-shaped rod (11), and the first screw rod (10) is threadedly connected to the first threaded groove (18).

4. The embedded protective shell of a self-closing valve according to claim 3, wherein: The positioning component includes two first semi-circular plates (4) and two second semi-circular plates (5). The rear side of one first semi-circular plate (4) and the rear side of one second semi-circular plate (5) are both fixedly installed on the front side of the vertical box plate (6), and the front side of the other first semi-circular plate (4) and the front side of the other second semi-circular plate (5) are both fixedly installed on the rear side of the vertical box plate (6). The two first semi-circular plates (4) and the two second semi-circular plates (5) are all movably installed inside the shell of the embedded protective shell body (2) of the open-box self-closing valve.

5. An embedded protective shell for a self-closing valve according to claim 1, 2 or 4, characterized in that: The anti-dropping component includes a support vertical shaft (7), and the bottom of the support vertical shaft (7) is fixedly installed on the top of the embedded protective shell body (2) of the open-box self-closing valve. A limiting column (1) is fixedly connected to the top of the support vertical shaft (7). A first limiting long rod (12) is rotatably connected to the outer surface of the support vertical shaft (7), and the first limiting long rod (12) is rotatably connected to both the embedded protective shell body (2) of the open-box self-closing valve and the limiting column (1). A third screw rod (13) is threadedly connected inside the first limiting long rod (12), and the third screw rod (13) is threadedly connected to the third threaded groove (19).

6. The embedded protective shell of a self-closing valve according to claim 3, characterized in that: The anti - shedding component includes a support vertical shaft (7), the bottom of the support vertical shaft (7) is fixedly installed on the top of the embedded protective shell body (2) of the open - box self - closing valve, the top of the support vertical shaft (7) is fixedly connected with a limit post (1), the outer surface of the support vertical shaft (7) is rotatably connected with a first limit long rod (12), the first limit long rod (12) is rotatably connected with the embedded protective shell body (2) of the open - box self - closing valve and the limit post (1) respectively, a third screw rod (13) is threadedly connected inside the first limit long rod (12), and the third screw rod (13) is threadedly connected with a third thread groove (19).

7. An embedded protective shell for a self-closing valve according to claim 1, 2, 4 or 6, characterized in that: The second fixing component includes a second limit long rod (14), the left side of the second limit long rod (14) is fixedly installed on the right side of the first limit long rod (12), and a second screw rod (15) is threadedly connected inside the second limit long rod (14).

8. The pre-embedded protective shell of a self-closing valve according to claim 5, characterized in that: The second fixing component includes a second limit long rod (14), the left side of the second limit long rod (14) is fixedly installed on the right side of the first limit long rod (12), and a second screw rod (15) is threadedly connected inside the second limit long rod (14).

9. An embedded protective shell for a self-closing valve according to claim 1, 2, 4, 6 or 8, characterized in that: The third fixing component includes a support bottom plate (8), the top of the support bottom plate (8) is fixedly installed on the bottom of the embedded protective shell body (2) of the open - box self - closing valve, the support bottom plate (8) is rotatably connected with a vertical box plate (6), the top of the support bottom plate (8) is fixedly connected with a support vertical plate (9), the support vertical plate (9) is fixedly connected with the embedded protective shell body (2) of the open - box self - closing valve, and a fourth thread groove (20) is opened on the top of the support vertical plate (9).

10. The embedded protective shell of a self-closing valve according to claim 7, characterized in that: The third fixing component includes a support bottom plate (8), the top of the support bottom plate (8) is fixedly installed on the bottom of the embedded protective shell body (2) of the open - box self - closing valve, the support bottom plate (8) is rotatably connected with a vertical box plate (6), the top of the support bottom plate (8) is fixedly connected with a support vertical plate (9), the support vertical plate (9) is fixedly connected with the embedded protective shell body (2) of the open - box self - closing valve, a fourth thread groove (20) is opened on the top of the support vertical plate (9), and the fourth thread groove (20) is threadedly connected with the third screw rod (13).

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