Check spring fixing device

Abstract

The utility model discloses a non-return spring fixing device which comprises an installation seat and a non-return mechanism, a valve body is embedded in the inner wall of the installation seat, a splicing pipe is welded to the top end of the valve body, a sealing ring is arranged at the bottom end of the outer wall of the splicing pipe in a sleeved mode, and a fixing nut is arranged on the outer wall of the splicing pipe. According to the non-return spring fixing device, the fixing pipe and the non-return mechanism are arranged, the mechanism is simple in structure, the whole non-return valve and a water inlet of a self-priming pump can be rotated, tightened and fixed through the fixing pipe, installation is convenient, and when the non-return spring fixing device is used, when water flow enters the self-priming pump, the water flow is not prone to falling off. Water flow impact force can impact a non-return plug in the non-return mechanism to retreat, so that water flow enters the self-priming pump, when no water flow enters the self-priming pump, a non-return spring body drives the non-return plug to reset, a water inlet of the self-priming pump is blocked through the non-return plug, water backflow is avoided, and the service life of the self-priming pump is prolonged. And the check spring body can be conveniently and regularly maintained and replaced through the fixing cover and the fixing rod.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a check spring fixing device. Background Technique

[0002] A check valve refers to a valve whose closing member is a circular valve flap and which blocks the reverse flow of the medium by its own weight and the pressure of the medium. It belongs to the category of automatic valves and is also called a non-return valve, a one-way valve, a reflux valve or an isolation valve. The movement mode of the valve flap is divided into a lifting type and a swing type. The lifting check valve is similar in structure to a globe valve, only lacking a valve stem to drive the valve flap. The medium enters from the inlet end (the swing check valve has an inclined valve flap that can rotate around an axis, and its working principle is similar to that of the lifting check valve). The check valve is commonly used as the bottom valve of a pumping device to prevent the backflow of water. When the check valve is used in combination with a globe valve, it can play a role in safety isolation. A check spring is usually provided in the check valve, so there is an urgent need for a check spring fixing device.

[0003] The currently used check spring fixing device is not convenient for maintaining and replacing the check spring, and the problem that the check spring falls off will occur after the check valve is used for a long time. Content of the Utility Model

[0004] The purpose of the utility model is to provide a check spring fixing device to solve the problems in the above background technique that the currently used check spring fixing device is not convenient for maintaining and replacing the check spring, and the problem that the check spring falls off will occur after the check valve is used for a long time.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A check spring fixing device includes a mounting seat and a check mechanism. The inner wall of the mounting seat is inlaid with a valve body, and a splicing pipe is welded to the top end of the valve body. A sealing ring is sleeved on the bottom end of the outer wall of the splicing pipe, and a fixing nut is arranged on the outer wall of the splicing pipe. A fixing pipe is welded to the bottom end of the valve body, and a base is welded to the top end inner wall of the valve body. The check mechanism is arranged inside the valve body. The check mechanism includes a check spring body, a check plug, a movable frame, a fixing cover and a fixing rod. The check spring body is welded to the bottom end of the base. A check plug is installed at the bottom end of the check spring body, and movable frames are arranged around the top end of the check plug. A fixing cover is arranged at the bottom end of the check plug, and a fixing rod is installed at the bottom end of the fixing cover.

[0006] Preferably, the inner wall of the sealing ring is in close fit with the outer wall of the splicing pipe, and the inner wall size of the sealing ring is consistent with the outer wall size of the splicing pipe.

[0007] Preferably, the fixing nut is in threaded connection with the splicing pipe, and the inner wall of the fixing nut and the outer wall of the splicing pipe are both thread-shaped.

[0008] Preferably, the outer wall of the fixed pipe is provided with a thread, and the fixed pipe is perpendicular to the mounting seat.

[0009] Preferably, the check plug forms a movable telescopic structure with the fixed pipe through the check spring body, and the check plug is perpendicular to the check spring body.

[0010] Preferably, the fixed cover is threadedly connected to the check plug through a fixing rod, and the outer wall of the fixing rod and the inner wall of the check plug are both provided with threads.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. For this check spring fixing device, through the set fixed pipe and check mechanism, this mechanism has a simple structure. The overall check valve can be rotationally tightened and fixed to the water inlet of the self-priming pump through the fixed pipe, which is convenient for installation. And when in use, when water flows into the self-priming pump, the water flow impact force can impact the check plug in the check mechanism to retreat, so that the water can flow into the self-priming pump. When there is no water flow, the check spring body drives the check plug to reset, and the check plug is used to block the water inlet of the self-priming pump to prevent water from flowing back. And it is convenient to regularly maintain and replace the check spring body through the fixed cover and the fixing rod;

[0013] 2. For this check spring fixing device, through the set sealing ring and fixing nut, it is convenient to splice an additional water suction pipe with the check valve during installation. The splicing pipe of the water suction pipe and the check valve can be spliced and fixed through the fixing nut, and the sealing ring can provide a sealing effect at the splicing place to prevent liquid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view of the present utility model;

[0015] Figure 2 is the top view part drawing of the splicing pipe of the present utility model;

[0016] Figure 3 is the part drawing of the check mechanism of the present utility model.

[0017] In the figure: 1. Mounting seat; 2. Valve body; 3. Splicing pipe; 4. Sealing ring; 5. Fixing nut; 6. Fixed pipe; 7. Base; 8. Check mechanism; 801. Check spring body; 802. Check plug; 803. Movable frame; 804. Fixed cover; 805. Fixing rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1-3 , the present invention provides a technical solution: a check spring fixing device, including a mounting base 1 and a check mechanism 8. The inner wall of the mounting base 1 is inlaid with a valve body 2, and the top of the valve body 2 is welded with a splicing pipe 3. A sealing ring 4 is sleeved on the bottom end of the outer wall of the splicing pipe 3. The inner wall of the sealing ring 4 is in close fit with the outer wall of the splicing pipe 3, and the inner wall size of the sealing ring 4 is consistent with the outer wall size of the splicing pipe 3. A fixing nut 5 is arranged on the outer wall of the splicing pipe 3. The fixing nut 5 is threadedly connected with the splicing pipe 3, and the inner wall of the fixing nut 5 and the outer wall of the splicing pipe 3 are both thread-shaped. By providing the sealing ring 4 and the fixing nut 5, when an additional water suction pipe is spliced with the check valve during installation, the fixing nut 5 can be used to splice and fix the water suction pipe and the splicing pipe 3 of the check valve, and the sealing ring 4 can provide a sealing effect at the splicing position to prevent liquid leakage.

[0020] A fixed pipe 6 is welded to the bottom end of the valve body 2. The outer wall of the fixed pipe 6 is provided with threads, and the fixed pipe 6 is vertically arranged with the mounting seat 1. A base 7 is welded to the top end inner wall of the valve body 2. A check mechanism 8 is arranged on the inner wall of the valve body 2. The check mechanism 8 includes a check spring body 801, a check plug 802, a movable frame 803, a fixed cover 804 and a fixed rod 805. The check spring body 801 is welded to the bottom end of the base 7. A check plug 802 is installed at the bottom end of the check spring body 801. Movable frames 803 are arranged around the top end of the check plug 802. A fixed cover 804 is arranged at the bottom end of the check plug 802. A fixed rod 805 is installed at the bottom end of the fixed cover 804. The check plug 802 forms a movable telescopic structure with the fixed pipe 6 through the check spring body 801, and the check plug 802 is vertically arranged with the check spring body 801. The fixed cover 804 is threadedly connected to the check plug 802 through the fixed rod 805, and the outer wall of the fixed rod 805 and the inner wall of the check plug 802 are both provided with threads. By arranging the fixed pipe 6 and the check mechanism 8, this mechanism has a simple structure. The whole check valve can be rotationally tightened and fixed to the water inlet of the self-priming pump through the fixed pipe 6, which is convenient for installation. And when in use, when water flows into the self-priming pump, the water flow impact force can impact the check plug 802 in the check mechanism 8 to retreat, so that the water can flow into the self-priming pump. When there is no water flow, the check spring body 801 drives the check plug 802 to reset, and the water inlet of the self-priming pump is blocked by the check plug 802 to prevent water from flowing back. And it is convenient to regularly maintain and replace the check spring body 801 through the fixed cover 804 and the fixed rod 805.

[0021] Working principle: During installation, first, the whole check valve can be rotationally tightened and fixed to the water inlet of the self-priming pump through the fixed pipe 6. Then, when splicing an additional water suction pipe to the check valve, the water suction pipe can be spliced and fixed to the splicing pipe 3 of the check valve through the fixing nut 5, and the sealing ring 4 can provide a sealing effect for the splicing part to prevent liquid leakage. It is convenient for installation. And when in use, when the self-priming pump pumps water into the self-priming pump through the additional water suction pipe, the water flow impact force can impact the check plug 802 in the check mechanism 8 to retreat, so that the water can flow into the self-priming pump. When there is no water flow, the check spring body 801 drives the check plug 802 to reset, and the water inlet of the self-priming pump is blocked by the check plug 802 to prevent water from flowing back. And it is convenient to regularly maintain and replace the check spring body 801 through the fixed cover 804 and the fixed rod 805. In this way, the operation process of a check spring fixing device is completed.

[0022] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A check spring fixing device, characterized in that, It includes a mounting base (1) and a check mechanism (8). The inner wall of the mounting base (1) is inlaid with a valve body (2), and a splicing pipe (3) is welded to the top end of the valve body (2). A sealing ring (4) is sleeved on the bottom end of the outer wall of the splicing pipe (3), and a fixing nut (5) is arranged on the outer wall of the splicing pipe (3). A fixing pipe (6) is welded to the bottom end of the valve body (2), and a base (7) is welded to the top end inner wall of the valve body (2). The check mechanism (8) is arranged inside the valve body (2). The check mechanism (8) includes a check spring body (801), a check plug (802), a movable frame (803), a fixing cover (804) and a fixing rod (805). The check spring body (801) is welded to the bottom end of the base (7). A check plug (802) is installed at the bottom end of the check spring body (801), and movable frames (803) are arranged around the top end of the check plug (802). A fixing cover (804) is arranged at the bottom end of the check plug (802), and a fixing rod (805) is installed at the bottom end of the fixing cover (804).

2. The one-way spring fixing device according to claim 1, characterized in that: The inner wall of the sealing ring (4) is in close fit with the outer wall of the splicing pipe (3), and the inner wall size of the sealing ring (4) is in accordance with the outer wall size of the splicing pipe (3).

3. A check spring fixing device according to claim 1, characterized in that: The fixing nut (5) is in threaded connection with the splicing pipe (3), and the inner wall of the fixing nut (5) and the outer wall of the splicing pipe (3) are both provided with threads.

4. A check spring fixing device according to claim 1, characterized in that: The outer wall of the fixing pipe (6) is provided with threads, and the fixing pipe (6) is vertically arranged with the mounting base (1).

5. A check spring fixing device according to claim 1, characterized in that: The check plug (802) and the fixing pipe (6) form a movable telescopic structure through the check spring body (801), and the check plug (802) is vertically arranged with the check spring body (801).

6. The check spring fixing device according to claim 1, characterized in that: The fixing cover (804) is in threaded connection with the check plug (802) through the fixing rod (805), and the outer wall of the fixing rod (805) and the inner wall of the check plug (802) are both provided with threads.

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