Swing check valve with valve clack convenient to replace
By introducing a swing assembly into the swing check valve and utilizing the cooperation of the actuating rod and the limit block, the problem of inconvenient valve disc replacement in existing swing check valves is solved, enabling quick valve disc replacement and simplified operation.
Patent Information
- Application Number
- CN202520703389.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-15
AI Technical Summary
The existing swing check valve has an inconvenient valve disc replacement mechanism, resulting in low replacement efficiency.
The design employs a swing assembly, including a fixed support, rocker arm, T-shaped guide rod, limit rod, return spring, and limit sleeve. Through the cooperation of the lever and the limit block, the valve disc can be quickly separated and installed, simplifying the replacement process.
It enables quick replacement of valve discs, improves replacement efficiency, simplifies operation steps, and reduces replacement difficulty.
Smart Images
Figure CN223953352U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to check valve technical field, concretely is a swing check valve of convenient replacement valve clack. BACKGROUND
[0002] The swing check valve is also called one-way valve or non-return valve, and its function is to prevent the medium in the pipeline from flowing backward. The check valve is a valve that is opened or closed by the medium flow and force to prevent the medium from flowing backward. The check valve belongs to the automatic valve type, and is mainly used in the pipeline with one-way medium flow. Only the medium is allowed to flow in one direction to prevent accidents.
[0003] When the medium flows into the flow passage from the inlet, the medium pressure lifts the valve clack and separates it from the valve seat. At this time, the valve is in an open state, and the medium flows out of the flow passage from the outlet. However, under the impact of the medium, the valve clack is lifted and hits the inner wall of the valve body, which causes the valve clack to be damaged. After the valve clack is damaged, it needs to be replaced to ensure the use effect of the swing check valve. However, the existing valve clack replacement structure of the check valve is inconvenient to operate and is not conducive to the replacement of the valve clack. In view of this, we propose a swing check valve with convenient valve clack replacement. SUMMARY
[0004] The utility model aims at providing a swing check valve with convenient valve clack replacement to solve the problem of the existing valve clack replacement structure of the check valve being inconvenient to operate and not conducive to the replacement of the valve clack.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a swing check valve with convenient valve clack replacement, comprising a valve body, a valve clack, and a boss provided on the middle part of the valve body. A connecting piece is connected to the upper part of the boss through bolts. The valve body and the boss are integrally machined, and the valve body and the boss are internally communicated. A swing assembly is arranged in the interior of the boss. The swing assembly comprises fixed supports and a rocker. The fixed supports are arranged at intervals, and the fixed supports and the boss are fixedly installed. The rocker is arranged between the adjacent fixed supports. T-shaped guide rods are threadedly connected to the two sides of the rocker. Limit rods are movably sleeved to the outer ends of the T-shaped guide rods. Reset springs are arranged in the interior of the limit rods. The reset springs are movably sleeved to the T-shaped guide rods. The valve clack is fixedly installed at the lower end of the rocker. A connecting shaft is arranged on one side of the rocker corresponding to the valve clack. The connecting shaft is annularly arranged at the end to form a limit block. A limit sleeve is rotatably connected to the lower end of the rocker. The limit sleeve is sleeved to the outer side of the connecting shaft.
[0006] Preferably, a sealing ring is arranged between the valve clack and the rocker, and the sealing ring is hollow in the interior.
[0007] Preferably, the maximum distance between adjacent T-shaped guide rods is less than the minimum distance between adjacent fixed supports.
[0008] Preferably, a push rod is arranged on the upper side of the limiting rod and is arranged between adjacent fixed supports.
[0009] Preferably, a hole slot for inserting the limiting rod is arranged on the fixed support.
[0010] Preferably, a guide slot for guiding the limiting block is arranged on the annular limiting sleeve.
[0011] Preferably, the limiting sleeve is arranged on the side of the rocker away from the valve disc.
[0012] Preferably, the inner diameter of the boss is greater than the outer diameter of the valve disc.
[0013] Compared with the prior art, the utility model has the beneficial effects that:
[0014] 1. The swing-type check valve with the valve disc convenient to replace is separated from the connecting piece, the adjacent push rods are simultaneously pushed from the outside to the inside, the return spring is stretched, the adjacent limiting rods are simultaneously moved to the inside, the limiting rods are separated from the inside of the fixed support, the swing assembly can be quickly removed from the inside of the valve body and the boss, the limiting sleeve is rotated, the left and right positions of the limiting block and the guide slot on the limiting sleeve are corresponded, the valve disc can be quickly separated from the swing assembly, the valve disc can be replaced, the operation is more convenient, and the replacement efficiency is faster. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a structural schematic view of the utility model;
[0016] Figure 2 It is a valve disc closing state schematic view of the utility model;
[0017] Figure 3 It is a valve disc opening state schematic view of the utility model;
[0018] Figure 4 It is a half-partial structure schematic view of the utility model;
[0019] Figure 5 It is a valve disc opening state schematic view of the utility model; Figure 4 of the utility model;
[0020] Figure 6 It is a swing assembly and valve disc connection schematic view of the utility model;
[0021] Figure 7 It is a swing assembly partial section view schematic view of the utility model;
[0022] Figure 8 The utility model discloses a limiting rod section structure schematic diagram.
[0023] In the drawing: 1, valve body;2, boss;3, connecting piece;4, swing assembly;40, fixed support;41, rocker;42, T-shaped guide rod;43, limiting rod;44, push rod;45, reset spring;46, limiting sleeve;47, limiting block;48, connecting shaft;5, valve clack;6, sealing ring. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.
[0025] Embodiment: please refer to Figures 1-8 The utility model provides a kind of technical scheme: a swing check valve of convenient replacement valve clack, mainly aiming at the valve clack replacement structure of existing check valve, it is more inconvenient to operate, it is not conducive to the problem of valve clack replacement to improve.Its specific scheme is as follows: including valve body 1, valve clack 5 and the boss 2 in the middle of being arranged on valve body 1, the inner diameter of boss 2 is greater than the outer diameter of valve clack 5.Boss 2 top is connected with connecting piece 3 by bolt, valve body 1 and boss 2 are integrally processed, and valve body 1 and boss 2 are communicated inside.
[0026] Please refer to Figures 1-3 Boss 2 inside is provided with swing assembly 4, and swing assembly 4 includes fixed support 40 and rocker 41, and fixed support 40 is fixedly installed on boss 2, and fixed support 40 is located inside boss 2.
[0027] Further, sealing ring 6 is provided between valve clack 5 and rocker 41, and sealing ring 6 is hollow inside.The material of sealing ring 6 is flexible rubber.Among them, the cross section of flexible rubber is as shown in Figure 4 And Figure 5 It is hollow inside, and its cross section is in "8" shape.In the process that valve clack 5 is fixed to swing assembly 4, sealing ring 6 can be compressed, so as to more conveniently improve the fixed stability of valve clack 5.
[0028] Further, the adjacent fixed supports 40 are spaced apart, the fixed support 40 and the boss 2 are fixedly installed, the rocker 41 is arranged between the adjacent fixed supports 40, the T-shaped guide rod 42 is threadedly connected to the two sides of the rocker 41, the maximum distance between the adjacent T-shaped guide rods 42 is smaller than the minimum distance between the adjacent fixed supports 40. The T-shaped guide rod 42 movably sleeves the limiting rod 43 at the outer end, and the hole groove for inserting the limiting rod 43 is arranged on the fixed support 40. The limiting rod 44 is arranged on the upper side of the limiting rod 43 and between the adjacent fixed supports 40. The limiting rod 44 can facilitate the operation of the limiting rod 43, so that the limiting rod 43 can move inward at the same time.
[0029] Further, the reset spring 45 is arranged in the limiting rod 43, the reset spring 45 movably sleeves the T-shaped guide rod 42, and the valve disc 5 is fixedly installed at the lower end of the rocker 41. Through the arrangement of the reset spring 45, the distance between the adjacent limiting rods 43 can be maximized, and after the reset spring 45 is stretched, the adjacent limiting rods 43 can move inward at the same time, so that the limiting rod 43 is separated from the inside of the fixed support 40. In this state, the rocker 41 and the fixed support 40 can be separated, so that the valve disc 5 can be separated from the inside of the valve body 1.
[0030] Please refer to Figure 5 and Figure 8 , the connecting shaft 48 is arranged on one side of the valve disc 5 corresponding to the rocker 41, the connecting shaft 48 and the center of the valve disc 5 are collinear, and the valve disc 5 and the connecting shaft 48 are integrally machined. The limiting block 47 is arranged in a ring shape at the end of the connecting shaft 48, and the limiting sleeve 46 is rotatably connected to the lower end of the rocker 41. The limiting sleeve 46 and the connecting shaft 48 are collinear, and the limiting sleeve 46 sleeves the outer side of the connecting shaft 48. The limiting sleeve 46 is arranged on the side of the rocker 41 away from the valve disc 5. When the limiting block 47 and the guide groove on the limiting sleeve 46 are in corresponding left and right positions, the connecting shaft 48 can be inserted into the inside of the limiting sleeve 46, and in this state, the valve disc 5 can be inserted; when the limiting block 47 and the guide groove on the limiting sleeve 46 are misaligned, the connecting shaft 48 can be fixed with the limiting sleeve 46, and in this state, the valve disc 5 can be quickly installed.
[0031] Working principle: the swing check valve with the valve disc convenient to replace can be used in water supply and drainage systems, and the valve body 1 is arranged in the water supply and drainage system. Figure 2 In the state shown in the figure, at this time, the valve disc 5 can block the channels of the water inlet and outlet of the valve body 1, and at this time, the throttling effect can be achieved; and in the state shown in the figure Figure 3In the shown state, the valve disc 5 is separated from the blockage of the water flow inlet and outlet of the valve body 1, at this time, the water flow can quickly pass through; when the valve disc 5 is replaced, the connecting piece 3 and the boss 2 are separated, the adjacent push rods 44 are manually pushed from the outside to the inside at the same time, so that the reset spring 45 is stretched, at this time, the adjacent limiting rods 43 can be moved to the inside at the same time, and then the limiting rods 43 are separated from the inside of the fixed support 40, in this state, the rocker 41 and the fixed support 40 can be separated, so that the valve disc 5 is separated from the inside of the valve body 1, the valve disc 5 is separated from the inside of the boss 2 and the valve body 1 along with the swing assembly 4; the limiting sleeve 46 is rotated, so that the limiting block 47 and the guide groove on the limiting sleeve 46 correspond to the left and right positions at this time, at this time, the valve disc 5 can be quickly separated from the swing assembly 4, and the valve disc 5 can be replaced.
[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A swing check valve with convenient replacement of the valve disc, comprising a valve body (1), a valve disc (5) and a boss (2) arranged in the middle of the valve body (1), a connecting piece (3) being connected to the boss (2) by bolts, characterized in that: The valve body (1) and the boss (2) are integrally machined, and the valve body (1) and the boss (2) are internally communicated, the boss (2) is internally provided with a swing assembly (4), the swing assembly (4) comprises fixed supports (40) and a rocker (41), the fixed supports (40) are spaced apart from each other, and the fixed supports (40) and the boss (2) are fixedly installed, the rocker (41) is arranged between the fixed supports (40), T-shaped guide rods (42) are threadedly connected to both sides of the rocker (41), the T-shaped guide rods (42) are movably sleeved with limit rods (43) at outer ends, the limit rods (43) are internally provided with return springs (45), the return springs (45) are movably sleeved on the T-shaped guide rods (42), a valve clack (5) is fixedly installed at a lower end of the rocker (41), the valve clack (5) is provided with a connecting shaft (48) on one side corresponding to the rocker (41), the connecting shaft (48) is annularly provided with a limit block (47) at an end, a limit sleeve (46) is rotatably connected to the lower end of the rocker (41), and the limit sleeve (46) is sleeved on the outer side of the connecting shaft (48).
2. A swing check valve with a conveniently replaceable disc according to claim 1, characterized in that: The valve clack (5) and the rocker (41) are provided with a sealing ring (6) therebetween, and the sealing ring (6) is hollow.
3. A swing check valve with a conveniently replaceable disc according to claim 1, characterized in that: The maximum distance between the T-shaped guide rods (42) is smaller than the minimum distance between the fixed supports (40).
4. A swing check valve with a conveniently replaceable disc according to claim 1, characterized in that: The limit rods (43) are provided with a pushing rod (44) on the upper side, and the pushing rod (44) is arranged between the fixed supports (40).
5. A swing check valve with a convenient replacement disc according to claim 1, characterized in that: Holes are formed in the fixed supports (40) for inserting the limit rods (43).
6. A swing check valve with a convenient replacement disc according to claim 1, characterized in that: A guide groove is annularly formed in the limit sleeve (46) for guiding the limit block (47).
7. A swing check valve with a convenient replacement disc according to claim 1, characterized in that: The limit sleeve (46) is arranged on the side of the rocker (41) away from the valve clack (5).
8. A swing check valve with a convenient replacement disc according to claim 1, characterized in that: The inner diameter of the boss (2) is greater than the outer diameter of the valve clack (5).