Low-temperature check valve

Abstract

The utility model discloses a low-temperature check valve which comprises a base and a check valve body, two symmetrical control assemblies are installed on the check valve body, and a fixing block is installed on the upper end face of the base. Mounting the assembly; the mounting assembly comprises two symmetrical placing blocks mounted on the lower end face of the check valve body, clamping openings are formed in the side walls, close to each other, of the two placing blocks, two symmetrical placing openings are formed in the upper end face of the base, and the two placing blocks are slidably connected into the two placing openings correspondingly. The fixing block is provided with an adjusting cavity, and the fixing block is provided with two sliding openings which are symmetrical to each other. The check valve has the advantages that the check valve body can be stably supported, meanwhile, the check valve body can be rapidly mounted and dismounted, a worker can conveniently replace and maintain the check valve body, and meanwhile water flow in the check valve can be limited.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a low-temperature check valve. Background Art

[0002] A check valve is a valve with a circular disc as the opening and closing part. It blocks the backflow of the medium by its own weight and the pressure of the medium. It is an automatic valve and is also called a non-return valve, a one-way valve, a reflux valve or an isolation valve. The disc movement mode is divided into lift type and swing type. The lift check valve is similar to the stop valve in structure, but lacks the valve stem that drives the disc. The medium enters from the inlet end (the swing check valve has a disc that is tilted and can rotate around the axis. The working principle is similar to that of the lift check valve.

[0003] The existing low-temperature check valve requires workers to perform cumbersome installation steps during the installation process, which makes it inconvenient for workers to replace and repair the check valve. In addition, the check valve is easily suspended in the air for a long time, which may cause connection problems due to its own weight, resulting in unstable connection and water leakage. In addition, the water flow inside the check valve is fixed, and workers cannot adjust the water flow, which cannot meet the workers' usage needs. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a low-temperature check valve.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A low-temperature check valve comprises: a base and a check valve body, wherein two mutually symmetrical control components are installed on the check valve body, and a fixed block is installed on the upper end surface of the base; an installation component; the installation component comprises two mutually symmetrical placement blocks installed on the lower end surface of the check valve body, and a bayonet is opened on a side wall of the two placement blocks close to each other, and two mutually symmetrical placement openings are opened on the upper end surface of the base, and the two placement blocks are respectively slidably connected in the two placement openings, and an adjustment cavity is opened on the fixed block, and two mutually symmetrical sliding openings are opened on the fixed block, and the two sliding openings are both slidably connected with a card block, and the two card blocks are respectively slidably connected in the two card openings, and one of the two card blocks The ends are threadedly connected with threaded rods, the other ends of the two threaded rods are rotated to pass through the base and are rotatably connected in the adjustment cavity, one end of the two threaded rods is fixedly connected with a secondary gear, a rotating rod is rotatably passed through the base, one end of the rotating rod is fixedly connected with a driving gear, the two secondary gears are meshed with the driving gear, a support platform is installed on the fixed block, the control component includes an extension block installed on the check valve body, a hole is opened on the extension block, a limiting block is slidably connected in the hole, one end of the limiting block slides through the check valve body, the other end of the limiting block is rotatably connected with a screw, the other end of the screw threadedly passes through the extension block, and a check device is installed in the check valve body.

[0007] In order to better achieve the above purpose, the utility model adopts a further technical solution: a group of feet are installed on the lower end surface of the base.

[0008] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: a knob is installed at one end of the rotating rod away from the fixed block.

[0009] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: the support platform matches the check valve body.

[0010] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: the two limiting blocks are both made of anti-corrosion materials.

[0011] The advantages of the utility model are: the check valve body can be installed conveniently and quickly through the installation component, which is convenient for the staff to replace and repair it. At the same time, the support effect of the support platform can prevent the check valve body from being unstable due to its own weight. At the same time, the water flow in the check valve can be controlled by the control component, meeting the use needs of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of a low-temperature check valve described in an embodiment of the utility model.

[0013] Figure 2 It is a three-dimensional structural cross-sectional view of a mounting assembly of a low-temperature check valve described in an embodiment of the utility model.

[0014] Figure 3 It is a three-dimensional structural cross-sectional view of a control component of a low-temperature check valve described in an embodiment of the utility model.

[0015] In the above drawings: 1 base, 2 check valve body, 3 fixed block, 4 placement block, 5 bayonet, 6 placement port, 7 adjustment chamber, 8 sliding port, 9 block, 10 threaded rod, 11 auxiliary gear, 12 rotating rod, 13 driving gear, 14 support platform, 15 extension block, 16 hole, 17 limiting block, 18 screw, 19 check device, 20 foot, 21 knob. DETAILED DESCRIPTION

[0016] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] like Figure 1-Figure 3As shown, the embodiment of the utility model proposes a low-temperature check valve, including: a base 1 and a check valve body 2. The check valve body 2 is a prior art and will not be described in detail here. A group of feet 20 are installed on the lower end surface of the base 1. Through the stabilizing effect of the feet 20, the staff can stably place the device in a specified position to work. Two symmetrical control components are installed on the check valve body 2. The control component includes an extension block 15 installed on the check valve body 2. The extension block 15 is provided with a hole 16. A limiting block 17 is slidably connected in the hole 16. The two limiting blocks 17 are both made of anti-corrosion materials. The anti-corrosion property of the anti-corrosion materials can reduce the erosion of the limiting blocks 17 by the water flow in the check valve body 2, thereby extending the service life of the device and meeting the use needs of the staff. One end of the limiting block 17 slides through the check valve body 2, and the other end of the limiting block 17 is rotatably connected to a screw 18. The other end of the screw 18 threadedly penetrates the extension block 15. A check valve body 2 is installed in the check valve body 2. The check device 19 is a prior art, which is a double-plate check valve, wherein the two plates can be rotated toward the middle by the water flow and automatically return to the original position when the water flow drops. A fixed block 3 is installed on the upper end surface of the base 1, and an installation component is installed. The installation component includes two mutually symmetrical placement blocks 4 installed on the lower end surface of the check valve body 2, and a bayonet 5 is opened on the side wall of the two placement blocks 4 close to each other. Two mutually symmetrical placement ports 6 are opened on the upper end surface of the base 1, and the two placement blocks 4 are respectively slidably connected in the two placement ports 6. An adjustment cavity 7 is opened on the fixed block 3, and two mutually symmetrical sliding ports 8 are opened on the fixed block 3. Blocks 9 are slidably connected in the two sliding ports 8, and the two blocks 9 are respectively slidably connected in the two bayonet ports 5. One end of the two blocks 9 is threadedly connected with a threaded rod 10, and the other ends of the two threaded rods 10 are rotatably passed through the base 1 and rotatably connected in the adjustment cavity 7. One end of the two threaded rods 10 is fixedly connected with a secondary gear 11, and a rotating rod 12 is rotatably passed through the base 1;A knob 21 is installed at one end of the rotating rod 12 away from the fixed block 3. By turning the knob 21, the staff can easily rotate the rotating rod 12, so as to complete the installation and disassembly of the check valve body 2. A driving gear 13 is fixedly connected to one end of the rotating rod 12, and the two auxiliary gears 11 are meshed with the driving gear 13. Through the above structure, the staff rotates the knob 21 to drive the rotating rod 12 to rotate, so that the driving gear 13 fixedly connected thereto rotates, and drives the two auxiliary gears 11 meshed therewith to rotate, so that the two threaded rods 10 fixedly connected to the two auxiliary gears 11 rotate, so that the clamping block 9 can slide in the sliding port 8 and enter the clamping port 5 to complete the installation work, which meets the use needs of the staff. A support platform 14 is installed on the fixed block 3, and the support platform 14 matches the check valve body 2, so that the support platform 14 can fit the check valve body 2 tightly, and at the same time, the check valve body 2 can be supported more stably to prevent the connection problem caused by its own weight, which meets the use needs of the staff. ;

[0018] When the utility model is used, the staff first places the device stably in the designated position by means of the stepping feet 20, then takes out the check valve body 2, aligns the placement block 4 on the check valve body 2 with the two placement ports 6, and pushes it in, then the staff can start to rotate the knob 21, drives the rotating rod 12 to rotate by means of the knob 21, drives the driving gear 13 to rotate by means of the rotating rod 12, then rotates the two auxiliary gears 11 meshing with the driving gear 13, and then drives the threaded rod 10 fixedly connected to the two auxiliary gears 11 to rotate, so that the two clamping blocks 9 slide in the two sliding ports 8 and enter into the clamping ports 5 on the two placement blocks 4, thereby completing the installation of the check valve body 2, in this process, since the support platform 14 matches the check valve body 2, the support platform 14 stably holds the check valve body 2 The close support prevents the check valve body 2 from causing connection failure due to its own weight. Then the staff can start working after connecting the pipeline. When water flows through the check valve body 2, the check device 19 is impacted by the water flow and rotates toward the middle, and the water flows. During the rotation process, the staff can rotate the screw 18. Through the threaded connection between the screw 18 and the extension block 15, the screw 18 will drive the limiting block 17 rotatably connected to it to move. The limiting block 17 slides in the hole 16 and extends out of the hole 16, and jams a rotating plate of the check device 19 to prevent it from rotating, so that the water flow cannot flow from here. Therefore, the water flow is restricted to meet the staff's use needs. When the work is completed and needs to be replaced and inspected, the staff first removes the pipeline, and then repeats the above operation in reverse to disassemble the check valve body 2 to complete the replacement and maintenance work.

Claims

1. A low temperature check valve, characterized in that: include: A base (1) and a check valve body (2), wherein two mutually symmetrical control components are installed on the check valve body (2), and a fixed block (3) is installed on the base (1); an installation component; the installation component comprises two mutually symmetrical placement blocks (4) installed on the check valve body (2), and a bayonet (5) is provided on a side wall of the two placement blocks (4) close to each other, and two mutually symmetrical placement openings (6) are provided on the upper end surface of the base (1), and the two placement blocks (4) are respectively slidably connected in the two placement openings (6), and an adjustment cavity (7) is provided on the fixed block (3), and two mutually symmetrical sliding openings (8) are provided on the fixed block (3), and the two sliding openings (8) are slidably connected with a clamping block (9), and the two clamping blocks (9) are respectively slidably connected in the two bayonet openings (5), and one end of the two clamping blocks (9) is threadedly connected with a threaded rod (10), The other ends of the two threaded rods (10) are rotatably passed through the base (1) and are rotatably connected in the adjustment chamber (7); one end of the two threaded rods (10) is fixedly connected to a secondary gear (11); a rotating rod (12) is rotatably passed through the base (1); one end of the rotating rod (12) is fixedly connected to a driving gear (13); a support platform (14) is installed on the fixed block (3); the control component comprises an extension block (15) installed on the check valve body (2); a hole (16) is opened on the extension block (15); a limiting block (17) is slidably connected in the hole (16); one end of the limiting block (17) slidably passes through the check valve body (2); the other end of the limiting block (17) is rotatably connected to a screw rod (18); the other end of the screw rod (18) is threadedly passed through the extension block (15); and a check device (19) is installed in the check valve body (2).

2. A low temperature check valve according to claim 1, characterized in that: A set of feet (20) is mounted on the base (1).

3. A low temperature check valve according to claim 1, characterized in that: A knob (21) is mounted on one end of the rotating rod (12) away from the fixed block (3).

4. A low temperature check valve according to claim 1, characterized in that: The support platform (14) matches the check valve body (2).

5. A low temperature check valve according to claim 1, characterized in that: The two limiting blocks (17) are both made of corrosion-resistant materials.

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