Anti-freezing check valve

Abstract

The utility model provides an anti-freezing check valve, which relates to the technical field of check valves, comprises a check valve body, and is characterized in that a lower protective shell is arranged at the bottom of the check valve body, a mounting block is arranged on one side of the lower protective shell, a connecting assembly is arranged in the mounting block, the connecting assembly comprises a first cavity formed in the mounting block, and a second cavity is formed in the mounting block. A limiting plate is arranged in the first cavity, a movable plate is arranged at the top of the limiting plate, a rotating shaft is arranged at the top of the movable plate, an upper protective shell is connected to the top of the rotating shaft, a guide column is arranged at the bottom of the upper protective shell, and a guide groove matched with the guide column is formed in the top of the lower protective shell; the sides, away from the mounting block, of the upper protective shell and the lower protective shell are connected through a buckle assembly, and heat preservation plate layers are arranged in the upper protective shell and the lower protective shell correspondingly. The device solves the problem of size mismatching caused by easy loss or confusion of the existing separated upper and lower protective shells.

Description

Technical Field

[0001] The utility model belongs to the technical field of check valves, and more specifically, particularly relates to an antifreeze check valve. Background Art

[0002] A check valve refers to a valve whose opening and closing part is a circular valve disc and which blocks the backflow of the medium by its own weight and the pressure of the medium; wherein Chinese Patent No.: CN202221740407.4 discloses an antifreeze check valve, comprising a check valve body, an upper protective shell is arranged on the outer part of the upper end of the check valve body, a lower protective shell is arranged on the outer part of the lower end of the check valve body, a through hole is opened in the middle of the top of the upper protective shell, arc-shaped receiving openings are symmetrically opened at the left and right ends of the opposite side of the lower protective shell and the upper protective shell, the inner sides of the lower protective shell and the upper protective shell are both provided with a heat preservation plate layer, the inner side of the heat preservation plate layer is provided with a foam layer, and the middle part of the front and rear sides of the upper end of the lower protective shell is symmetrically fixed with a second fixed block. The antifreeze check valve can protect the outer part of the check valve body through the cooperation of the upper protective shell, the lower protective shell, the heat preservation plate layer and the foam layer, thereby increasing the heat preservation effect, and also preventing the check valve body from being damaged by collision, thereby increasing the service life.

[0003] Based on the above, the inventors have discovered the following problems: the above patent has a good thermal insulation effect by providing an upper and lower protective shell, an insulation board and a foam layer, but in actual use, the upper and lower protective shells are separated, which can easily cause the protective shell to be lost or multiple protective shells to be placed together, which can easily cause the upper and lower protective shells to be confused and result in size mismatch.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and an antifreeze check valve is provided to achieve a purpose with greater practical value. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an antifreeze check valve to solve the problem that the current upper and lower protective shells are easily lost or confused, resulting in size mismatch.

[0006] The purpose and effect of the antifreeze check valve of the utility model are achieved by the following specific technical means:

[0007] A kind of antifreeze check valve comprises a check valve body, a lower protective shell is provided at the bottom of the check valve body, a mounting block is provided on one side of the lower protective shell, a connecting assembly is provided in the mounting block, the connecting assembly comprises a chamber one opened in the mounting block, a limit plate is provided in the chamber one, a movable plate is provided on the top of the limit plate, a rotating shaft is provided on the top of the movable plate, an upper protective shell is connected to the top of the rotating shaft, a guide column is provided at the bottom of the upper protective shell, and a guide groove matching the guide column is provided on the top of the lower protective shell, the upper protective shell and the lower protective shell are connected at a side away from the mounting block by a snap assembly, and insulation board layers are provided inside the upper protective shell and the lower protective shell.

[0008] Furthermore, a through hole is provided at the top of the upper protective shell, and the through hole matches the upper end portion of the check valve body. Arc-shaped accommodating openings are provided on both sides of the upper protective shell and the lower protective shell, and the arc-shaped accommodating openings fit the outer walls of the left and right ends of the check valve body.

[0009] Furthermore, the size of the movable plate matches the inner size of the chamber.

[0010] Furthermore, the buckle assembly includes a card block 1 installed on one side of the upper protective shell and a card block 2 installed on one side of the lower protective shell, a chamber 2 is opened inside the card block 1, a limit block is provided in the chamber 2, a sliding rod is provided on one side of the limit block, an L-shaped block is provided on the other side of the sliding rod, a pushing block is provided on one side of the L-shaped block, and a groove is provided on one side of the card block 1, a sliding groove is provided at the bottom of the groove, the L-shaped block is inserted and installed in the sliding groove, and a notch is opened on the top of the card block 2, the notch matches the L-shaped block, and an L-shaped chamber is opened at the bottom of the notch.

[0011] Furthermore, the slide rod is provided with a spring, one end of the spring is fitted with the interior of the chamber, and the other end of the spring is fitted with the limit block.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. Through the cooperation among the limit plate, the movable plate and the rotating shaft, the movable plate can be easily flipped after being pulled out from the chamber 1, so that the top of the upper protective shell faces downward, which is convenient for maintaining the check valve body, avoiding the protective shell being easily lost due to being placed randomly, or multiple protective shells being placed together, which may easily cause confusion between the upper and lower protective shells and cause size mismatch, thereby improving practicality.

[0014] 2. Through the cooperation among the spring, L-shaped block and sliding rod, the L-shaped block can be quickly separated from the L-shaped chamber at the bottom of the slot, so that the upper protective shell and the lower protective shell can be quickly separated. With the movable plate, it is convenient to pull out the upper protective shell and then flip it over, avoiding the loss or confusion of the upper and lower protective shells, and indirectly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a three-dimensional schematic diagram of an antifreeze check valve.

[0016] Figure 2 The utility model is a schematic diagram of an antifreeze check valve.

[0017] Figure 3 The utility model is a three-dimensional schematic diagram of an antifreeze check valve connection component.

[0018] Figure 4 The utility model is a three-dimensional schematic diagram of an antifreeze check valve buckle assembly.

[0019] Figure 5 It is a side schematic diagram of an antifreeze check valve block assembly of the utility model.

[0020] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0021] 1. Check valve body; 2. Lower protective shell; 3. Mounting block; 4. Upper protective shell; 5. Guide column; 6. Guide groove; 7. Insulation board layer; 8. Through hole; 9. Arc-shaped receiving opening; 201. Block 2; 202. Notch; 203. L-shaped chamber; 301. Chamber 1; 302. Limit plate; 303. Movable plate; 304. Rotating shaft; 401. Block 1; 402. Chamber 2; 403. Limit block; 404. Slide rod; 405. L-shaped block; 406. Groove; 407. Slide groove; 408. Spring; 409. Push block. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example:

[0026] As attached Figure 1 To Attachment Figure 5 As shown:

[0027] The utility model provides an antifreeze check valve, wherein a lower protective shell 2 is provided at the bottom of the check valve body 1, a mounting block 3 is provided at one side of the lower protective shell 2, a connecting assembly is provided in the mounting block 3, the connecting assembly comprises a chamber 301 opened in the mounting block 3, a limiting plate 302 is provided in the chamber 301, a movable plate 303 is provided at the top of the limiting plate 302, a rotating shaft 304 is provided at the top of the movable plate 303, an upper protective shell 4 is connected to the top of the rotating shaft 304, a guide column 5 is provided at the bottom of the upper protective shell 4, and a guide groove 6 matching the guide column 5 is provided at the top of the lower protective shell 2, the upper protective shell 4 and the lower protective shell 2 are connected at a side away from the mounting block 3 by a snap assembly, a heat-insulating plate layer 7 is provided inside the upper protective shell 4 and the lower protective shell 2, the heat-insulating plate layer 7 is provided with a heat-insulating plate and a foam layer, and the two cooperate with each other to protect the outside of the check valve body 1, thereby increasing the heat-insulating effect, and also preventing the check valve body 1 from being damaged by collision, thereby increasing the service life.

[0028] Among them, a through hole 8 is opened at the top of the upper protective shell 4, and the through hole 8 matches the upper end part of the check valve body 1. Arc-shaped accommodating openings 9 are opened on both sides of the upper protective shell 4 and the lower protective shell 2, and the arc-shaped accommodating openings 9 are fitted with the outer walls of the left and right ends of the check valve body 1.

[0029] Among them, the size of the movable plate 303 matches the internal size of the chamber 1 301. Through the cooperation between the limit plate 302, the movable plate 303 and the rotating shaft 304, the movable plate 303 is easy to flip after being pulled out from the chamber 1 301, so that the top of the upper protective shell 4 faces downward, which is convenient for maintaining the check valve body 1, avoids the protective shell being placed randomly and easily lost, or multiple protective shells are placed together, which is easy to cause confusion between the upper and lower protective shells 2 and size mismatch, thereby improving practicality.

[0030] Among them, the buckle assembly includes a card block 401 installed on one side of the upper protective shell 4 and a card block 201 installed on one side of the lower protective shell 2, a chamber 2 402 is opened inside the card block 1 401, a limit block 403 is arranged in the chamber 2 402, a slide bar 404 is arranged on one side of the limit block 403, an L-shaped block 405 is arranged on the other side of the slide bar 404, a push block 409 is arranged on one side of the L-shaped block 405, and a groove 406 is arranged on one side of the card block 1 401, a slide groove 407 is arranged at the bottom of the groove 406, the L-shaped block 405 is inserted and installed in the slide groove 407, and a notch 202 is opened on the top of the card block 201, the notch 202 matches the L-shaped block 405, and an L-shaped chamber 203 is opened at the bottom of the notch 202.

[0031] Among them, the sliding rod 404 is equipped with a spring 408, one end of the spring 408 is in contact with the inside of the chamber, and the other end of the spring 408 is in contact with the limit block 403. Through the cooperation between the spring 408, the L-shaped block 405 and the sliding rod 404, the L-shaped block 405 can be quickly detached from the L-shaped chamber 203 at the bottom of the slot 202, so that the upper protective shell 4 and the lower protective shell 2 can be quickly separated. With the movable plate 303, it is convenient to pull out the upper protective shell 4 and then flip it over, so as to avoid the loss or confusion of the upper protective shell 4 and the lower protective shell 2, thereby indirectly improving work efficiency.

[0032] The specific usage and function of this embodiment are as follows:

[0033] First, check the integrity of the device, and then install the device on a horizontal plane. When the check valve body 1 needs to be repaired, push the push block 409 to drive the L-shaped block 405 to move, so that the L-shaped block 405 is disengaged from the L-shaped chamber 203, and the upper protective shell 4 and the lower protective shell 2 are quickly separated. In addition, with the cooperation of the limit plate 302, the movable plate 303 and the rotating shaft 304, the movable plate 303 is pulled out of the chamber 1 301 and then turned over, so that the top of the upper protective shell 4 faces downward. Driven by the movable plate 303, the upper protective shell 4 is moved down and placed on one side of the lower protective shell 2, which is convenient for maintaining the check valve body 1 and avoids the protective shells from being placed randomly. It is easy to lose, or multiple protective shells are placed together, which may cause confusion between the upper and lower protective shells 2 and size mismatch. To improve practicality, after maintenance, pull the upper protective shell 4, pull the movable plate 303, flip the upper protective shell 4, align the guide rod with the guide groove 6, move the movable plate 303 downward to drive the upper protective shell 4 to move downward and align with the lower protective shell 2 for installation, and the upper protective shell 4 and the lower protective shell 2 are both provided with an insulation board layer 7, and the insulation layer is provided with an insulation board and a foam layer, which cooperate with each other to protect the outside of the check valve body 1, increase the insulation effect, and also prevent the check valve body 1 from being damaged by bumps, thereby increasing the service life.

[0034] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

Claims

1. An antifreeze check valve, comprising a check valve body (1), characterized in that: A lower protective shell (2) is provided at the bottom of the check valve body (1), a mounting block (3) is provided on one side of the lower protective shell (2), a connecting assembly is provided in the mounting block (3), the connecting assembly comprises a chamber (301) opened inside the mounting block (3), a limit plate (302) is provided in the chamber (301), a movable plate (303) is provided at the top of the limit plate (302), a rotating shaft (304) is provided at the top of the movable plate (303), an upper protective shell (4) is connected to the top of the rotating shaft (304), a guide column (5) is provided at the bottom of the upper protective shell (4), and a guide groove (6) matching the guide column (5) is provided at the top of the lower protective shell (2), the upper protective shell (4) and the lower protective shell (2) are connected at a side away from the mounting block (3) by a snap-fit ​​assembly, and both the upper protective shell (4) and the lower protective shell (2) are provided with a thermal insulation board layer (7) inside.

2. An antifreeze check valve as claimed in claim 1, characterized in that: The top of the upper protective shell (4) is provided with a through hole (8), and the through hole (8) matches the upper end portion of the check valve body (1). The upper protective shell (4) and the lower protective shell (2) are provided with arc-shaped receiving openings (9) on both sides, and the arc-shaped receiving openings (9) are in contact with the outer walls of the left and right ends of the check valve body (1).

3. An antifreeze check valve as claimed in claim 1, characterized in that: The size of the movable plate (303) matches the internal size of chamber one (301).

4. An antifreeze check valve as claimed in claim 1, characterized in that: The buckle assembly comprises a first clamping block (401) installed on one side of the upper protective shell (4) and a second clamping block (201) installed on one side of the lower protective shell (2); a second chamber (402) is provided inside the first clamping block (401); a limit block (403) is provided inside the second chamber (402); a sliding rod (404) is provided on one side of the limit block (403); an L-shaped block (405) is provided on the other side of the sliding rod (404); the L-shaped block (405) is provided on the other side of the sliding rod (404); 5), a pushing block (409) is provided on one side of the card block 1 (401), a groove (406) is provided on one side of the card block 1, a sliding groove (407) is provided at the bottom of the groove (406), the L-shaped block (405) is inserted and installed in the sliding groove (407), and a notch (202) is provided on the top of the card block 2 (201), the notch (202) and the L-shaped block (405) match, and an L-shaped chamber (203) is provided at the bottom of the notch (202).

5. An antifreeze check valve as claimed in claim 4, characterized in that: The slide bar (404) is provided with a spring (408), one end of the spring (408) is fitted with the interior of the chamber, and the other end of the spring (408) is fitted with the limit block (403).

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