Check valve capable of switching circulation channels

Abstract

The utility model relates to the technical field of flow stop valves, in particular to a flow stop valve capable of switching circulation channels, which comprises a flow stop valve and is used for shunting or intercepting flow, the flow stop valve comprises a main body assembly, a valve seat fixed at the upper end of a T-shaped three-way valve body, a valve rod rotatably mounted in the valve seat in a penetrating manner, and a valve rod fixed at the lower end of the valve seat, a three-way spherical valve core is fixed at the lower end of the valve rod and used for changing the flow direction of fluid; the flow stopping assembly comprises a cylinder base fixed to the front end of the T-shaped three-way valve body, notches are formed in the two sides of the surface of the front end of the cylinder base, clamping grooves are formed in one sides of the notches and communicate with the notches, a plug is installed in the cylinder base in an inserted mode, a rotary knob is fixed to the front end of the plug, and clamping heads are fixed to the two sides of the surface of the rear end of the rotary knob; the auxiliary assembly comprises a handle rotationally mounted on the outer wall of the upper end of the valve rod; during maintenance or emergency shutdown, the valve element is rotated to enable the opening to face forwards, and the rotary knob is pressed to fix the chock plug for closure; during normal shunting, the knob is reversely rotated, the spring resets the plug, and shunting interference is avoided.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, specifically a check valve with switchable flow channels. Background Technology

[0002] A check valve is a type of valve used to control the flow of fluid. Its main function is to prevent or allow fluid to pass through a pipeline. It is typically used in situations where a quick shut-off of fluid is required to prevent backflow or leakage.

[0003] According to CN215806551U, a check valve with an easy-to-replace handle is disclosed. This technology discloses "a check valve with an easy-to-replace handle, including a check valve body, a rotating rod, a pulling structure, and an anti-rotation structure. The internal part of the check valve body is movably connected to a rotating rod with one end penetrating and extending to the top of the check valve body. A handle disassembly assembly is fixedly connected to the outside of the rotating rod. The bottom of the handle disassembly assembly is fixedly connected to the rotating rod. A pulling structure is fixedly connected to the left side of the check valve body. An anti-rotation structure is fixedly connected to the top of the pulling structure. The inner wall of the anti-rotation structure is movably connected to the rotating rod. The handle disassembly assembly includes an outer ring fixedly connected to the inner wall of the rotating rod. An installation block is fixedly connected to the top of the rotating rod. The outer side of the installation block is movably connected to the handle body." This technology has the technical effect of "a check valve with an easy-to-replace handle, which does not require external tools for disassembly, greatly improving the efficiency of check valve handle replacement."

[0004] Existing three-way valves change the direction of fluid flow by rotating the valve core. However, due to the shape of the valve core (such as T-type or L-type), it is not possible to cover the openings of all three channels at the same time. Therefore, it can only switch the fluid flow path for diversion or merging, but cannot completely cut off the fluid. As a result, in situations where complete fluid cut-off is required (such as during maintenance, cleaning, or emergency shutdown), the T-type three-way valve cannot meet the requirements, and an additional shut-off valve may be needed to achieve complete fluid closure. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a flow-stop valve with switchable flow channels. During maintenance or emergency shutdown, rotating the valve core to face forward and pressing the knob to fix the plug and cut off the flow; during normal flow diversion, rotating the knob in reverse and the spring resets the plug, thus avoiding interference with flow diversion.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flow-stop valve with switchable flow channels, comprising a flow-stop valve for diverting or blocking flow, the flow-stop valve comprising:

[0007] The main components include a valve seat fixed at the upper end of a T-type three-way valve body, a valve stem rotatably mounted inside the valve seat, and a three-way ball valve core fixed at the lower end of the valve stem for changing the fluid flow direction;

[0008] The flow-stopping assembly includes a cylinder seat fixed to the front end of the T-type three-way valve body. The cylinder seat has slots on both sides of the front end surface. A slot is provided on one side of the slot and communicates with the slot. A plug is inserted and installed inside the cylinder seat. A knob is fixed to the front end of the plug. A lock is fixed to both sides of the rear end surface of the knob.

[0009] The auxiliary components include a handle that is rotatably mounted on the outer wall of the upper end of the valve stem.

[0010] Preferably, the flow-stopping assembly further includes a first spring sleeved and installed on the cylinder seat, and the first spring is located between the front end of the T-type three-way valve body and the rear end of the knob.

[0011] Preferably, the auxiliary component further includes a lower toothed ring fixed to the outer wall of the valve stem, and the lower toothed ring is rotatably mounted on the upper end of the valve seat. An upper toothed ring is fixed to the bottom of the handle. A second spring is sleeved on the lower toothed ring, and the second spring is located between the lower end of the upper toothed ring and the upper end of the lower toothed ring.

[0012] Preferably, the top of the handle has three indicator arrows, and each indicator arrow corresponds to a channel in three directions on the T-type three-way valve body.

[0013] Preferably, the front end of the plug is a hemispherical structure, and the outer surface of the plug is covered with a rubber sleeve.

[0014] Preferably, the main component further includes an inlet fixed at the rear end of the stop valve, and a first outlet and a second outlet are fixed at both ends of the T-type three-way valve body, respectively.

[0015] Beneficial effects

[0016] This invention provides a flow-stop valve with switchable flow channels. Compared with the prior art, it has the following advantages:

[0017] 1. When maintenance, cleaning, or emergency shutdown is required, necessitating flow throttling of the check valve, the auxiliary component rotates the three-way ball valve core on the valve stem, aligning the central opening of the three-way ball valve core with the front facing forward. Pressing the knob then inserts the plug into the central opening of the three-way ball valve core, while simultaneously rotating the knob inserts the locking head into the slot. Retracting the knob and rotating it again slides the locking head from the slot into the locking groove, thus fixing the knob to the cylinder seat and securing the internal plug position. Through the pressing and rotating operation of the check valve component, a rapid switch from flow diversion to flow throttling is achieved.

[0018] 2. When the check valve needs to operate normally, rotate the knob counterclockwise. The knob will cause the locking head to slide from the slot to the opening. The pressure of the first spring will push the knob to move the locking head through the opening and outward. At the same time, the knob will also cause the plug to extend outward and detach from the three-way ball valve core. This allows the check valve assembly to automatically reset during normal flow diversion, avoiding interference with the normal flow diversion operation of the check valve. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a partial cross-sectional view of the present invention;

[0021] Figure 3 This is a half-sectional view of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the T-type three-way valve body in this utility model;

[0023] Figure 5 This is a schematic diagram of the plug head in this utility model.

[0024] In the diagram: 1. Check valve; 11. Main assembly; 111. T-type three-way valve body; 112. Valve seat; 113. Valve stem; 114. Three-way ball valve core; 115. Inlet; 116. First outlet; 117. Second outlet; 12. Check assembly; 121. Cylinder seat; 122. Groove; 123. Slot; 124. Plug; 125. Knob; 126. Clip; 127. First spring; 13. Auxiliary assembly; 131. Lower toothed ring; 132. Handle; 133. Upper toothed ring; 134. Second spring; 135. Indicator arrow. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a flow-stop valve with switchable flow channels, including a flow-stop valve 1 for diverting or blocking flow, wherein the flow-stop valve 1 includes:

[0027] The main component 11 includes a valve seat 112 fixed at the upper end of a T-type three-way valve body 111, a valve stem 113 rotatably mounted inside the valve seat 112, and a three-way ball valve core 114 fixed at the lower end of the valve stem 113 for changing the fluid flow direction.

[0028] The flow-stopping assembly 12 includes a cylinder seat 121 fixed to the front end of the T-type three-way valve body 111. The front end surface of the cylinder seat 121 has slots 122 on both sides. A slot 123 is provided on one side of the slot 122 and communicates with the slot 122. A plug 124 is inserted and installed inside the cylinder seat 121. A knob 125 is fixed to the front end of the plug 124. A lock 126 is fixed to both sides of the rear end surface of the knob 125.

[0029] The auxiliary component 13 includes a handle 132 that is rotatably mounted on the outer wall of the upper end of the valve stem 113.

[0030] In this embodiment, when maintenance, cleaning, or emergency shutdown is required, necessitating flow throttling of the stop valve 1, the auxiliary component 13 rotates the three-way ball valve core 114 on the valve stem 113, causing the central opening of the three-way ball valve core 114 to face forward. Then, pressing the knob 125 causes the plug 124 to insert into the central opening of the three-way ball valve core 114. Simultaneously, the knob 125 causes the locking head 126 to insert into the slot 122. Retracting the knob 125 and rotating it causes the locking head 126 to slide from the slot 122 into the slot 123, thus fixing the knob 125 onto the cylinder seat 121 and securing the internal plug 124. Through the pressing and rotating operation of the stop valve component 12, a rapid switch from flow diversion to flow throttling is achieved.

[0031] Specifically, the flow-stopping assembly 12 also includes a first spring 127 sleeved and installed on the cylinder seat 121, and the first spring 127 is located between the front end of the T-type three-way valve body 111 and the rear end of the knob 125.

[0032] In this embodiment, when the flow control valve 1 needs to operate normally, the knob 125 is rotated counterclockwise. The knob 125 drives the locking head 126 to slide from the slot 123 to the opening 122. The pressure of the first spring 127 pushing the knob 125 pushes the locking head 126 through the opening 122 and outward. At the same time, the knob 125 also drives the plug 124 to extend outward and disengage it from the three-way ball valve core 114. This allows the flow control assembly 12 to automatically reset during normal flow control, avoiding interference with the normal flow control operation of the flow control valve 1.

[0033] Specifically, the auxiliary component 13 also includes a lower toothed ring 131 fixed to the outer wall of the valve stem 113, and the lower toothed ring 131 is rotatably mounted on the upper end of the valve seat 112. An upper toothed ring 133 is fixed to the bottom of the handle 132. A second spring 134 is sleeved on the lower toothed ring 131, and the second spring 134 is located between the lower end of the upper toothed ring 133 and the upper end of the lower toothed ring 131.

[0034] In this embodiment, when the flow direction needs to be adjusted, the handle 132 is pressed down, causing the upper toothed ring 133 on the handle 132 to engage with the lower toothed ring 131. Then, the handle 132 is rotated, and the upper toothed ring 133, in conjunction with the lower toothed ring 131, drives the three-way ball valve core 114 on the valve stem 113 to rotate. When not adjusting, the handle 132 is released, and the pressure of the second spring 134 pushes the upper toothed ring 133 to move the handle 132 upward, causing the upper toothed ring 133 to separate from the lower toothed ring 131. This prevents the valve stem 113 from being driven when the handle 132 is accidentally touched, thus avoiding the rotation of the three-way ball valve core 114 and improving the stability and safety of the operation.

[0035] Specifically, the top of the handle 132 has three indicator arrows 135, and each indicator arrow 135 corresponds to one of the three channels on the T-type three-way valve body 111.

[0036] In this embodiment, the three indicator arrows 135 on the handle 132 can be pointed to the channels in each direction on the T-type three-way valve body 111, which makes it easier for users to intuitively judge the fluid flow direction and improves the accuracy and convenience of operation.

[0037] Specifically, the front end of the plug 124 has a hemispherical structure, and the outer surface of the plug 124 is covered with a rubber sleeve.

[0038] In this embodiment, after the plug 124 is fully inserted into the middle port of the three-way ball valve core 114, its interior can be completely sealed to prevent fluid leakage.

[0039] Specifically, the main component 11 also includes an inlet 115 fixed to the rear end of the check valve 1, and a first outlet 116 and a second outlet 117 fixed to both ends of the T-type three-way valve body 111.

[0040] The working principle and usage process of this utility model are as follows: First, when it is necessary to adjust the flow direction, press the handle 132 downwards to engage the upper toothed ring 133 and the lower toothed ring 131 on the handle 132. Then, rotate the handle 132 so that the upper toothed ring 133 and the lower toothed ring 131 can drive the three-way ball valve core 114 on the valve stem 113 to rotate. When not adjusting, release the pressed handle 132 and the pressure of the second spring 134 pushes the upper toothed ring 133 to move the handle 132 upwards, so that the upper toothed ring 133 and the lower toothed ring 131 are separated. This prevents the valve stem 113 from being driven when the handle 132 is accidentally touched, thus avoiding the rotation of the three-way ball valve core 114 and improving the stability and safety of operation.

[0041] When maintenance, cleaning, or emergency shutdown is required, necessitating flow throttling of the stop valve 1, the auxiliary component 13 rotates the three-way ball valve core 114 on the valve stem 113, causing the central opening of the three-way ball valve core 114 to face forward. Then, pressing the knob 125 causes the plug 124 to insert into the central opening of the three-way ball valve core 114. Simultaneously, the knob 125 causes the locking head 126 to insert into the slot 122. Retracting the knob 125 and rotating it again causes the locking head 126 to slide from the slot 122 into the slot 123, thus fixing the knob 125 onto the cylinder seat 121 and securing the internal plug 124. Through the pressing and rotating operation of the stop valve component 12, a rapid switch from flow diversion to flow throttling is achieved.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A check valve with switchable flow channels, characterized in that: Includes a check valve (1) for diverting or shutting off flow, the check valve (1) comprising: The main component (11) includes a valve seat (112) fixed at the upper end of a T-type three-way valve body (111), a valve stem (113) is rotatably mounted inside the valve seat (112), and a three-way ball valve core (114) is fixed at the lower end of the valve stem (113) and used to change the fluid flow direction; The flow-stopping assembly (12) includes a cylinder seat (121) fixed to the front end of the T-type three-way valve body (111). The cylinder seat (121) has slots (122) on both sides of the front end surface. A slot (123) is provided on one side of the slot (122) and communicates with the slot (122). A plug (124) is inserted and installed inside the cylinder seat (121). A knob (125) is fixed to the front end of the plug (124). A slot (126) is fixed to both sides of the rear end surface of the knob (125). The auxiliary component (13) includes a handle (132) that is rotatably mounted on the outer wall of the upper end of the valve stem (113).

2. The check valve with switchable flow channels according to claim 1, characterized in that: The flow-stopping assembly (12) also includes a first spring (127) sleeved on the cylinder seat (121), and the first spring (127) is located between the front end of the T-type three-way valve body (111) and the rear end of the knob (125).

3. A check valve with switchable flow channels according to claim 1, characterized in that: The auxiliary component (13) also includes a lower toothed ring (131) fixed to the outer wall of the valve stem (113), and the lower toothed ring (131) is rotatably mounted on the upper end of the valve seat (112). An upper toothed ring (133) is fixed to the bottom of the handle (132). A second spring (134) is sleeved on the lower toothed ring (131), and the second spring (134) is located between the lower end of the upper toothed ring (133) and the upper end of the lower toothed ring (131).

4. A check valve with switchable flow channels according to claim 1, characterized in that: The handle (132) has three indicator arrows (135) on its top, and each indicator arrow (135) corresponds to one of the three channels on the T-type three-way valve body (111).

5. A check valve with switchable flow channels according to claim 1, characterized in that: The front end of the plug (124) is a hemispherical structure, and the outer surface of the plug (124) is covered with a rubber sleeve.

6. A check valve with switchable flow channels according to claim 1, characterized in that: The main component (11) also includes an inlet (115) fixed at the rear end of the stop valve (1), and a first outlet (116) and a second outlet (117) are fixed at both ends of the T-type three-way valve body (111).

Images