Spherical check valve

Abstract

The utility model discloses a ball check valve which is characterized by comprising a valve body, a sealing rubber ring and a check mechanism, the sealing rubber ring and the check mechanism are arranged in the valve body, the sealing rubber ring is arranged on a water inlet of the valve body, the check mechanism comprises a check plate and a spring, the bottom of the check plate is correspondingly installed on the inner wall of the bottom of the valve body through a rotating shaft, and the spring is arranged in the valve body. One end of the spring is connected to the side wall of the check plate, the other side of the spring is connected with a fixing strip, the fixing strip is arranged at the bottom of the inner wall of the valve body, and a rubber ball is arranged on the check plate and corresponds to the sealing rubber ring. The utility model has a simple structure, is convenient to use, and solves the problem that the use is influenced by water leakage due to no small-water-flow automatic closing structure.

Description

Technical Field

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

[0002] With the continuous development of industry, the discharge of sewage has become a necessary process in the operation of modern industry. Check valves are generally required for sewage discharge, which can prevent water from flowing back.

[0003] The above device does not have the function of automatically closing when a small water flow is used. If the water flow is small during use, the valve body cannot be closed, resulting in water leakage affecting use. Based on the existing technology, the utility model designs a ball check valve. Utility Model Content

[0004] In view of the above problems, the utility model provides a ball check valve which has the characteristic of automatically closing when there is a small water flow, and is used to solve the problem of water leakage caused by a small water flow where the speed and buoyancy of the water flow are unable to drive the valve body to close.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A ball check valve, characterized in that it includes a valve body, a sealing rubber ring arranged inside the valve body, and a check mechanism, the sealing rubber ring is arranged on the water inlet of the valve body, the check mechanism includes a check plate and a spring, the bottom of the check plate is correspondingly installed on the bottom inner wall of the valve body through a rotating shaft, one end of the spring is connected to the side wall of the check plate, and the other side is connected to a fixing strip, the fixing strip is arranged at the bottom of the inner wall of the valve body, a rubber ball is arranged on the check plate, and the rubber ball corresponds to the sealing rubber ring.

[0007] A rotating groove is provided at the bottom of the inner wall of the valve body for installing a rotating shaft.

[0008] The limiting mechanism includes a first connecting ring, a limiting rod, a second connecting ring, a clamping ring and a clamping rod. The first connecting ring is arranged on the front side of the clamping ring, and the second connecting ring is arranged on the rear side. The first connecting ring, the clamping ring and the second connecting ring are connected in series through a plurality of limiting rods to form a cage-shaped structure. The cage-shaped structure is arranged in the valve body. A check plate and a rubber ball are arranged in the cage-shaped structure, so that the check plate and the rubber ball can move axially along the inner wall of the cage-shaped structure to prevent the rubber ball from running off.

[0009] A plurality of clamping rods are cross-arranged inside the clamping ring to increase the strength of the clamping ring.

[0010] An annular groove and a sliding hole are provided inside the valve body, which are used for limiting the second connecting ring and the limiting rod respectively.

[0011] Among the plurality of limit rods, the limit rod at the bottom is slidably connected to the through slot on the non-return plate, so that the non-return plate can slide linearly along the limit rod.

[0012] The beneficial effects of the utility model are:

[0013] (1) When the utility model is in use, the check plate is used. When the amount of water inside the valve body is small, the impact on the check plate is smaller than the elastic force of the spring. The spring will drive the check plate to rotate and retract and drive the rubber ball to contact the sealing rubber ring, thereby preventing the water inside the valve body from flowing out and achieving the closure of the rubber ball when the amount of water inside the valve body is small.

[0014] (2) When the utility model is in use, the rotating shaft is installed in the rotating groove at the bottom of the inner wall of the valve body, and the rotating connecting check plate pushes the rubber ball to close when the water flow in the valve body is small.

[0015] (3) When the utility model is in use, the rubber ball moves in the cage-shaped structure formed by the first connecting ring, the limiting rod, the second connecting ring, the clamping ring and the clamping rod. The limiting rod supports the rubber ball, which can prevent the impact force of the water flow from impacting the rubber ball against the inner wall of the valve body, ensure that the rubber ball and the sealing rubber ring are on the same axis, and enhance the airtightness of the check valve.

[0016] (4) When the utility model is in use, a plurality of clamping rods are cross-arranged inside the clamping ring to increase the strength of the clamping ring and ensure the restrictive effect on the rubber ball when the valve body is draining water normally.

[0017] (5) When the utility model is in use, an annular groove and a sliding hole are provided inside the valve body, which are used for limiting the second connecting ring and the limiting rod respectively.

[0018] (6) When the utility model is in use, the bottommost limit rod of the limit rod is slidably connected to the through groove on the non-return plate, so that the non-return plate can slide linearly along the limit rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the valve body structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the rubber ball structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the sealing rubber ring structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the limiting mechanism of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the non-return mechanism of the utility model;

[0024] Figure numerals: valve body 1, valve cover 101, left neck 102, right neck 103, rubber ball 104, sealing rubber ring 2, rotating groove 201, annular groove 202, sliding hole 203, limiting mechanism 3, first connecting ring 301, limiting rod 302, second connecting ring 303, clamping ring 304, clamping rod 305, check mechanism 4, check plate 401, rotating shaft 402, through groove 403, fixing strip 404, spring 405. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 2 , Figure 3 , Figure 5 As shown, a ball check valve is characterized in that it includes a valve body 1, a sealing rubber ring 2 and a check mechanism 4 arranged inside the valve body 1, the sealing rubber ring 2 is arranged on the water inlet of the valve body 1, the check mechanism 4 includes a check plate 401 and a spring 405, the bottom of the check plate 401 is correspondingly installed on the bottom inner wall of the valve body 1 through a rotating shaft 402, one end of the spring 405 is connected to the side wall of the check plate 401, and the other side is connected to a fixing strip 404, the fixing strip 404 is arranged at the bottom of the inner wall of the valve body, a rubber ball 104 is arranged on the check plate 401, and the rubber ball 104 corresponds to the sealing rubber ring 2.

[0027] like Figure 4 As shown, a rotation groove 201 is provided at the bottom of the inner wall of the valve body 1 for mounting a rotation shaft 402 .

[0028] like Figure 2 , Figure 4 As shown, the limiting mechanism 3 includes a first connecting ring 301, a limiting rod 302, a second connecting ring 303, a clamping ring 304 and a clamping rod 305. The first connecting ring 301 is arranged on the front side of the clamping ring 304, and the second connecting ring 303 is arranged on the rear side. The first connecting ring 301, the clamping ring 304 and the second connecting ring 303 are connected in series through a plurality of limiting rods 302 to form a cage structure. The cage structure is arranged in the valve body 1. A check plate 401 and a rubber ball 104 are arranged in the cage structure, so that the check plate 401 and the rubber ball 104 can move axially along the inner wall of the cage structure to prevent the rubber ball 104 from running off.

[0029] like Figure 4 As shown, a plurality of clamping rods 305 are cross-arranged inside the clamping ring 304 to increase the strength of the clamping ring 304 .

[0030] like Figure 4 As shown, the valve body 1 is provided with an annular groove 202 and a sliding hole 203 inside, which are used for limiting the second connecting ring 303 and the limiting rod 302 respectively.

[0031] like Figure 4 , Figure 5 As shown, among the plurality of limiting rods 302 , the bottom limiting rod 302 is slidably connected to the through slot 403 on the non-return plate 401 , so that the non-return plate 401 can slide linearly along the limiting rod 302 .

[0032] like Figure 1 , Figure 2 As shown, a valve cover 101 is arranged on the top of the valve body 1 , a left neck 102 is fixedly connected to one side of the valve body 1 , a right neck 103 is fixedly connected to one side of the valve body 1 , and a rubber ball 104 is arranged inside the valve body 1 .

[0033] When the utility model is used, a sealing rubber ring 2 is arranged inside the valve body 1. The sealing rubber ring 2 is arranged to facilitate contact with the valve body 1 and seal to prevent backflow. A limiting mechanism 3 is arranged inside the valve body 1. The limiting mechanism 3 prevents the impact force of the water flow from impacting the rubber ball 104 on the inner wall of the valve body 1. A clamping rod 305 is fixed inside the limiting rod 302 through a clamping ring 304. The rubber ball 104 is limited by the limiting rod 302 and the clamping rod 305, and the distance between the rubber ball 104 and the valve body 1 can be controlled. The gap is maximized and the flow resistance is minimized, so that the rubber ball 104 and the sealing rubber ring 2 can be coaxial; when the valve body 1 is in use, water flows from the right neck 103 to the left neck 102 and impacts the rubber ball 104, driving the check plate 401 to rotate through the rubber ball 104 and stretching the spring 405; when the amount of water inside the valve body 1 is small, the impact on the check plate 401 is smaller than the elastic force of the spring 405, and the spring drives the check plate 401 to rotate and retract and drives the rubber ball 104 to contact the sealing rubber ring 2.

[0034] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A ball check valve, characterized in that: The invention comprises a valve body (1), a sealing rubber ring (2) arranged inside the valve body (1), and a check mechanism (4); the sealing rubber ring (2) is arranged on the water inlet of the valve body (1); the check mechanism (4) comprises a check plate (401) and a spring (405); the bottom of the check plate (401) is correspondingly mounted on the bottom inner wall of the valve body (1) via a rotating shaft (402); one end of the spring (405) is connected to the side wall of the check plate (401), and the other end is connected to a fixing strip (404); the fixing strip (404) is arranged at the bottom of the inner wall of the valve body; a rubber ball (104) is arranged on the check plate (401), and the rubber ball (104) corresponds to the sealing rubber ring (2).

2. A ball check valve according to claim 1, characterized in that: The bottom of the inner wall of the valve body (1) is provided with a rotation groove (201) for mounting a rotation shaft (402).

3. A ball check valve according to claim 1, characterized in that: The valve also comprises a limiting mechanism (3), the limiting mechanism (3) comprising a first connecting ring (301), a limiting rod (302), a second connecting ring (303), a clamping ring (304) and a clamping rod (305), the first connecting ring (301) being arranged on the front side of the clamping ring (304), and the second connecting ring (303) being arranged on the rear side, and the first connecting ring (301), the clamping ring (304) and the second connecting ring (303) being connected in series via a plurality of limiting rods (302) to form a cage-shaped structure, the cage-shaped structure being arranged in the valve body (1), and a check plate (401) and a rubber ball (104) being arranged in the cage-shaped structure, so that the check plate (401) and the rubber ball (104) can move axially along the inner wall of the cage-shaped structure, thereby preventing the rubber ball (104) from running off.

4. A ball check valve according to claim 3, characterized in that: A plurality of clamping rods (305) are cross-arranged inside the clamping ring (304) to increase the strength of the clamping ring (304).

5. A ball check valve according to claim 1, characterized in that: The valve body (1) is provided with an annular groove (202) and a sliding hole (203) inside, which are used for limiting the second connecting ring (303) and the limiting rod (302) respectively.

6. A ball check valve according to claim 3, characterized in that: Among the plurality of limit rods (302), the limit rod (302) at the bottom is slidably connected to the through slot (403) on the non-return plate (401), so that the non-return plate (401) can slide linearly along the limit rod (302).

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