Tool for taking out valve seat of check valve

Abstract

The utility model relates to the technical field of check valves, in particular to a check valve seat taking-out tool which comprises a valve body and a valve seat installed in the valve body, two symmetrically-distributed fixing blocks are fixedly installed at the top of the valve body, a first pull rod is installed in the two fixing blocks in a threaded mode, and a rotating handle is fixedly connected to the top of the first pull rod. The rotating handle is located on the top of the fixing block. An inner supporting assembly is installed on the outer wall of the first pull rod and used for supporting an inner hole of the valve seat. A plurality of annularly-distributed scraping plates are movably installed in the first pull rod and used for scraping off dirt on the inner wall of the valve body. The inner supporting assembly comprises movable rods, supporting blocks and inclined blocks, and the outer wall of the first pull rod is movably provided with a plurality of sets of annularly-distributed movable rods. According to the valve seat clamping device, the valve seat can be rapidly and conveniently clamped, the valve seat is taken out of the valve body, and dirt on the inner wall of the valve body is cleaned while the valve seat is taken out.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a tool for removing a check valve seat. Background Art

[0002] A check valve, also known as a one-way throttle valve, is a valve that controls the fluid flow by changing the throttle section or throttle length. The vulnerable parts of the check valve need to be replaced regularly; during the process of replacing the check valve, it often occurs that the valve seat cannot be removed from the valve chamber. If cutting is used to assist in removing the valve seat by damaging it, it is easy to damage the valve chamber, and at the same time, it wastes manpower and material resources, prolongs the maintenance time, and increases the workload.

[0003] Chinese Utility Model Patent CN205111764U discloses a tool for removing a one-way valve seat of a high-pressure pulp diaphragm pump, including: a full-thread screw rod, a nut, a jack, a support frame and a pull plate. The full-thread screw rod passes through the central hole of the support frame and is connected to the central hole of the jack and the pull plate; the nut is screwed on the top end of the full-thread screw rod to lock the jack. It can quickly and effectively remove the one-way valve seat, reduce the labor intensity of maintenance, improve the maintenance efficiency, and is not easy to damage the valve chamber.

[0004] When the above patent is used, the diameter of the pull plate needs to be larger than the inner hole diameter in the middle of the valve seat so that the pull plate can catch the bottom of the valve seat and then remove the valve seat. However, generally, only the top of the valve chamber of a one-way valve is provided with an opening, and the valve seat is located inside the valve chamber. It is very difficult to connect the full-thread screw rod and the pull plate through a simple inclination angle, resulting in an increase in the operation time and affecting the overall maintenance efficiency of the pipeline and the production process. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the defects existing in the prior art, and a tool for removing a check valve seat is proposed.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a tool for removing a check valve seat, including a valve body and a valve seat installed inside the valve body. Two symmetrically distributed fixing blocks are fixedly installed on the top of the valve body. A first pull rod is installed inside the two fixing blocks in a threaded manner. The top of the first pull rod is fixedly connected to a turning handle, and the turning handle is located on the top of the fixing block;

[0007] An inner support assembly is installed on the outer wall of the first pull rod, and the inner support assembly is used to support the inner hole of the valve seat;

[0008] A plurality of annularly distributed scraping plates are movably installed inside the first pull rod, and the scraping plates are used to scrape the dirt on the inner wall of the valve body.

[0009] Further: The inner support assembly includes a movable rod, a support block, and an inclined block. A plurality of annularly distributed movable rods are movably installed on the outer wall of the first pull rod. A support block is movably installed at one end of the movable rod away from the first pull rod. An inclined block is fixedly connected to the bottom of the support block. The outer wall of the support block fits against the inner wall of the valve seat.

[0010] Further: A support plate is fixedly connected to the outer wall of the first pull rod. The support plate is located at the bottom of the inclined block.

[0011] Further: A plurality of annularly distributed installation grooves are formed inside the first pull rod. The scraping plate corresponds to the installation grooves. A second pull rod is slidably installed inside the first pull rod. A pulling block is fixedly connected to the top of the second pull rod. The pulling block is located at the top of the rotary handle. A sleeve is fixedly connected to the bottom of the second pull rod. The inner wall of the sleeve fits against the outer wall of the first pull rod.

[0012] Further: A sliding groove is formed inside the first pull rod. The sliding groove is located at the top of the installation groove. The sleeve is located inside the sliding groove.

[0013] Further: A hinge is fixedly installed between the two fixing blocks. Bolts are threadedly installed at one end of the two fixing blocks away from the hinge.

[0014] Further: A magnet is fixedly installed at the bottom of the first pull rod.

[0015] The utility model has the following beneficial effects:

[0016] 1. Compared with the prior art, when the first pull rod, the support block, and the inclined block are provided and used, the first pull rod is inserted into the inside of the valve body. At this time, the inclined block is located on the top of the valve seat. Then, when pressing down further, the support block can slide into the inner wall of the valve seat through the inclined surface of the inclined block. Then, driven by the self - gravity of the support block, the support block fits against the inner wall of the valve seat. Then, the first pull rod is rotated to drive the support block to rotate and rise. At this time, through the frictional force of the contact surface between the support block and the valve seat, the valve seat can be clamped and fixed. Then, as the first pull rod rises, the valve seat is driven to leave the inside of the valve body, which can realize quick and convenient clamping of the valve seat and taking out the valve seat from the valve body.

[0017] 2. Compared with the prior art, when using the first pull rod, the installation groove, the scraping plate, the second pull rod, the pulling block and the sleeve, the scraping plate is installed inside the installation groove, and the scraping plate is wrapped inside the installation groove through the sleeve. Then, the pulling block drives the second pull rod to move upward, and at the same time drives the sleeve to move. At this time, without the obstruction of the sleeve, the scraping plate can unfold by its own gravity and fit against the inner wall of the valve body. Then, release the pulling block to make the second pull rod fall naturally and catch on the top of the scraping plate, so as to fix the position of the scraping plate. While the first pull rod rotates, it drives the scraping plate to rotate, and the dirt on the inner wall of the valve body can be scraped off, realizing the cleaning of the dirt on the inner wall of the valve body while the valve seat is taken out. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the first perspective of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the second perspective of the present utility model;

[0020] Figure 3 is a schematic cross-sectional structural diagram of the present utility model;

[0021] Figure 4 is Figure 3 the enlarged structural diagram at A in

[0022] Legend:

[0023] 1. Valve body; 101. Valve seat; 2. Fixed block; 201. Hinge; 202. Bolt; 3. First pull rod; 301. Rotating handle; 302. Installation groove; 303. Sliding groove; 4. Inner support assembly; 401. Movable rod; 402. Support block; 403. Inclined block; 404. Support plate; 5. Scraping plate; 6. Second pull rod; 601. Pulling block; 602. Sleeve; 7. Magnet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Referring to Figures 1-4 , a check valve seat removal tool provided by the present utility model includes a valve body 1 and a valve seat 101 installed inside the valve body 1. Two symmetrically distributed fixed blocks 2 are fixedly installed at the top of the valve body 1. A first pull rod 3 is threadedly installed inside the two fixed blocks 2. The top of the first pull rod 3 is fixedly connected to a rotating handle 301, and the rotating handle 301 is located at the top of the fixed block 2. An inner support assembly 4 is installed on the outer wall of the first pull rod 3, and the inner support assembly 4 is used to support the inner hole of the valve seat 101. A plurality of annularly distributed scraping plates 5 are movably installed inside the first pull rod 3, and the scraping plates 5 are used to scrape the dirt on the inner wall of the valve body 1.

[0025] During use, insert the first pull rod 3 into the interior of the valve body 1, place the inner support assembly 4 in the inner hole of the valve seat 101, and support and fix the valve seat 101 through the inner support assembly 4. Then, fixedly install the two fixing blocks 2 on the top of the valve body 1 to clamp the first pull rod 3, making the threads between the first pull rod 3 and the fixing blocks 2 correspond to each other. Then, rotate the handle 301 to drive the first pull rod 3 to rotate and rise, and at the same time drive the valve seat 101 to rotate and rise together, so that the valve seat 101 can be taken out of the valve body 1. And while the first pull rod 3 rotates, it drives the scraper 5 to rotate to scrape off the dirt on the inner wall of the valve body 1.

[0026] The inner support assembly 4 includes a movable rod 401, a support block 402, and an inclined block 403. A plurality of groups of annularly distributed movable rods 401 are movably installed on the outer wall of the first pull rod 3. A support block 402 is movably installed at one end of the movable rod 401 away from the first pull rod 3. A bottom of the support block 402 is fixedly connected to the inclined block 403. An outer wall of the support block 402 is in contact with an inner wall of the valve seat 101.

[0027] During use, insert the first pull rod 3 into the inner wall of the valve body 1. At this time, the inclined block 403 is located on the top of the valve seat 101. Then, continue to press down so that the support block 402 can slide into the inner wall of the valve seat 101 through the inclined surface of the inclined block 403. Then, due to the self-gravity of the support block 402, the support block 402 fits on the inner wall of the valve seat 101. Then, rotate the first pull rod 3. While the first pull rod 3 rotates, it drives the support block 402 to rotate and rise. At this time, through the frictional force of the contact surface between the support block 402 and the valve seat 101, the valve seat 101 can be clamped and fixed. Then, as the first pull rod 3 rises, it drives the valve seat 101 to leave the interior of the valve body 1.

[0028] A support plate 404 is fixedly connected to the outer wall of the first pull rod 3. The support plate 404 is located at the bottom of the inclined block 403.

[0029] During use, the falling position of the support block 402 can be restricted through the support plate 404 to prevent the angle of the support block 402 from being too small, resulting in the support block 402 being unable to fit with the valve seat 101.

[0030] A plurality of annularly distributed installation grooves 302 are formed in the interior of the first pull rod 3. The scraper 5 corresponds to the installation grooves 302. A second pull rod 6 is slidably installed in the interior of the first pull rod 3. A top of the second pull rod 6 is fixedly connected to a pull block 601. The pull block 601 is located on the top of the handle 301. A bottom of the second pull rod 6 is fixedly connected to a sleeve 602. An inner wall of the sleeve 602 is in contact with an outer wall of the first pull rod 3.

[0031] During use, the scraping plate 5 is located inside the installation groove 302, and the scraping plate 5 is wrapped inside the installation groove 302 through the sleeve 602. Then, the first pull rod 3 is inserted into the valve body 1. Then, the second pull rod 6 is driven to move upward through the pulling block 601, and at the same time, the sleeve 602 is driven to move. At this time, without the obstruction of the sleeve 602, the scraping plate 5 can unfold and adhere to the inner wall of the valve body 1 under its own gravity. Then, the pulling block 601 is released, allowing the second pull rod 6 to fall naturally and get stuck on the top of the scraping plate 5, thus fixing the position of the scraping plate 5. Then, by rotating the first pull rod 3, the scraping plate 5 is driven to rotate, and the dirt on the inner wall of the valve body 1 can be scraped off.

[0032] A chute 303 is provided inside the first pull rod 3. The chute 303 is located at the top of the installation groove 302, and the sleeve 602 is located inside the chute 303.

[0033] During use, the sleeve 602 can slide freely inside the first pull rod 3 through the chute 303.

[0034] A hinge 201 is fixedly installed between the two fixing blocks 2. At one end of the two fixing blocks 2 away from the hinge 201, a bolt 202 is threadedly installed.

[0035] During use, the two fixing blocks 2 can be movably connected together through the hinge 201. Then, the two fixing blocks 2 are installed on the top of the valve body 1, and the first pull rod 3 is clamped between the two fixing blocks 2. Then, a bolt 202 is installed between the two fixing blocks 2 to fixedly install the two fixing blocks 2 on the top of the valve body 1. Then, when the first pull rod 3 rotates, through the thread between the fixing block 2 and the first pull rod 3, the first pull rod 3 can be made to move upward.

[0036] A magnet 7 is fixedly installed at the bottom of the first pull rod 3.

[0037] When the first pull rod 3 enters the valve body 1, the metal debris at the bottom end inside the valve body 1 can be attracted by the magnet 7 and cleaned after the first pull rod 3 is taken out.

[0038] Working principle: First, the scraping plate 5 is installed inside the installation groove 302, and the scraping plate 5 is wrapped inside the installation groove 302 through the sleeve 602. Then, the first pull rod 3 is inserted into the valve body 1. At this time, the inclined block 403 is located on the top of the valve seat 101. Then, continue to press down so that the support block 402 can slide into the inner wall of the valve seat 101 through the inclined surface of the inclined block 403. Then, driven by the self-gravity of the support block 402, the support block 402 adheres to the inner wall of the valve seat 101. At this time, the first pull rod 3 completely enters the valve body 1, and at this time, the metal debris at the bottom end inside the valve body 1 is attracted by the magnet 7.

[0039] Next, drive the second pull rod 6 to move upward through the pulling block 601, and at the same time drive the sleeve 602 to move. At this time, the scraping plate 5 is no longer blocked by the sleeve 602, so it can unfold and fit against the inner wall of the valve body 1 under its own gravity. Then release the pulling block 601 to allow the second pull rod 6 to fall naturally and get stuck at the top of the scraping plate 5, thus fixing the position of the scraping plate 5.

[0040] Then, install the two fixing blocks 2 on the top of the valve body 1, and clamp the first pull rod 3 between the two fixing blocks 2, so that the threads between the fixing blocks 2 and the first pull rod 3 are aligned with each other. Then install a bolt 202 between the two fixing blocks 2 to fixedly install the two fixing blocks 2 on the top of the valve body 1. Then drive the first pull rod 3 to rotate through the turning handle 301, and through the threads between the fixing block 2 and the first pull rod 3, the first pull rod 3 can be moved upward.

[0041] When the first pull rod 3 rotates, it drives the support block 402 to rotate and rise. At this time, through the frictional force of the contact surface between the support block 402 and the valve seat 101, the valve seat 101 can be clamped and fixed, and then as the first pull rod 3 rises, the valve seat 101 is driven away from the inside of the valve body 1.

[0042] While the first pull rod 3 rotates, it drives the scraping plate 5 to rotate, so that the dirt on the inner wall of the valve body 1 can be scraped off.

[0043] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A single-flow valve seat removal tool, comprising a valve body (1) and a valve seat (101) installed inside the valve body (1), characterized in that: At the top of the valve body (1), two symmetrically distributed fixing blocks (2) are fixedly installed. A first pull rod (3) is installed with internal threads in the two fixing blocks (2). At the top of the first pull rod (3), a turning handle (301) is fixedly connected. The turning handle (301) is located at the top of the fixing block (2). An inner support assembly (4) is installed on the outer wall of the first pull rod (3). The inner support assembly (4) is used to support the inner hole of the valve seat (101). A plurality of annularly distributed scraping plates (5) are movably installed inside the first pull rod (3). The scraping plates (5) are used to scrape off the dirt on the inner wall of the valve body (1).

2. The single-flow valve seat removal tool according to claim 1, wherein: The inner support assembly (4) includes a movable rod (401), a support block (402), and an inclined block (403). A plurality of groups of annularly distributed movable rods (401) are movably installed on the outer wall of the first pull rod (3). At one end of the movable rod (401) away from the first pull rod (3), a support block (402) is movably installed. At the bottom of the support block (402), an inclined block (403) is fixedly connected. The outer wall of the support block (402) is in contact with the inner wall of the valve seat (101).

3. The single-flow valve seat removal tool according to claim 1, characterized in that: A support plate (404) is fixedly connected to the outer wall of the first pull rod (3). The support plate (404) is located at the bottom of the inclined block (403).

4. The single-flow valve seat removal tool according to claim 1, characterized in that: A plurality of annularly distributed installation grooves (302) are formed inside the first pull rod (3). The scraping plates (5) correspond to the installation grooves (302). A second pull rod (6) is slidably installed inside the first pull rod (3). At the top of the second pull rod (6), a pulling block (601) is fixedly connected. The pulling block (601) is located at the top of the turning handle (301). At the bottom of the second pull rod (6), a sleeve (602) is fixedly connected. The inner wall of the sleeve (602) is in contact with the outer wall of the first pull rod (3).

5. A single-flow valve seat removal tool according to claim 4, characterized in that: A chute (303) is formed inside the first pull rod (3). The chute (303) is located at the top of the installation groove (302). The sleeve (602) is located inside the chute (303).

6. The single-flow valve seat removal tool according to claim 1, characterized in that: A hinge (201) is fixedly installed between the two fixing blocks (2). A bolt (202) is installed with internal threads at one end of the two fixing blocks (2) away from the hinge (201).

7. A single-flow valve seat removal tool according to claim 1, characterized in that: A magnet (7) is fixedly installed at the bottom of the first pull rod (3).

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