A dual-stop combination valve with locking function

Abstract

This utility model relates to a dual-stop structure combination valve with a locking function. At least one unit stop valve has a handle locking component and a handle unlocking component disposed between its bushing assembly and the drive handle. The handle locking component includes a magnetic stop and a spring. The drive handle has a mounting groove, and the magnetic stop and spring are located within the mounting groove. The two ends of the spring are connected to the bottom wall of the mounting groove and the magnetic stop, respectively. The handle unlocking component includes a control unit and a coil arranged around the mounting groove. The control unit controls the coil to be energized, attracting the magnetic stop and compressing the spring to disengage from the first locking groove / second locking groove. The cooperation of the handle locking component and the handle unlocking component enables locking and unlocking of the handle in a second open position and a second blocked position, ensuring the stability of the stop and preventing accidental opening.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a double-stop structure combination valve with locking function. Background Technology

[0002] Valves with a single shut-off structure are prone to problems such as wear of the sealing structure and failure of the shut-off function during use. Combination valves with a double shut-off structure can effectively ensure the reliability of the shut-off function.

[0003] The existing double-stop combination valve lacks a locking mechanism in its drive handle, making the valve prone to accidental opening and closing, thus lacking safety. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a dual-stop structure combination valve with a locking function.

[0005] The technical solution adopted by this utility model is as follows: A double-stop structure combination valve with locking function includes a valve body pipeline, wherein the valve body pipeline includes a fluid inlet, a fluid outlet, and a main medium flow channel connecting the fluid inlet and the fluid outlet, and at least two unit stop valves controlling the opening and closing of the main medium flow channel are sequentially arranged on the valve body pipeline from the fluid inlet to the fluid outlet. The unit shut-off valve includes a valve stem, a valve core, a valve seat, and a bushing assembly. One end of the bushing assembly is fixedly connected to the valve body pipeline. The center of the bushing assembly has a moving channel that is threadedly connected to the valve stem. The valve stem is located within the moving channel, with one end connected to the valve core, and the other end extending out of the moving channel and fixed with a drive handle. The drive handle drives the valve stem to rotate around its center, causing the valve stem and valve core to move axially relative to the moving channel. This results in a first blocking position where the valve core and valve seat seal together to block the flow of the main medium, and a first open position where the valve core moves away from the valve seat. At least one unit shut-off valve has a handle locking assembly and a handle unlocking assembly provided between its bushing assembly and the drive handle. The handle locking assembly includes a magnetic stop and a spring. The drive handle has a mounting groove, and the magnetic stop and spring are located within the mounting groove. The two ends of the spring are respectively connected to the bottom wall of the mounting groove and the magnetic stop. The magnetic stop block rotates around the center of the valve stem and has a second blocking position corresponding to the first blocking position of the valve core and a second open position corresponding to the first open position of the valve core. The bushing assembly is provided with a first locking groove and a second locking groove corresponding to the second blocking position and the second open position of the magnetic stop block, respectively. When the magnetic stop block is in the second blocking position / second open position, the end of the magnetic stop block away from the spring passes through the mounting groove and extends into the first locking groove / second locking groove to restrict the rotation of the drive handle. The handle unlocking assembly includes a control unit and a coil arranged around the mounting slot. The control unit controls the coil to be energized to attract the magnetic stop block and compress the spring to disengage from the first locking slot / second locking slot.

[0006] Preferably, the lower end of the magnetic block is provided with a slot, and the first locking slot and the second locking slot are respectively fixed with an upwardly extending plug that is adapted to the shape of the slot. When the magnetic block is in the second blocking position / second open position, the slot and the plug are engaged.

[0007] Preferably, when the magnetic stop is in the second blocking position / second open position, the bottom end of the slot abuts against the top end of the insert.

[0008] Preferably, both the upper ends of the first locking groove and the second locking groove are provided with flared openings.

[0009] Preferably, the bushing assembly includes an outer bushing and an inner bushing arranged concentrically. The inner bushing surrounds the valve stem, and the moving channel is located at the center of the inner bushing. The outer bushing is sleeved outside the inner bushing and fixedly fitted with it. The lower end of the outer bushing is fixed to the valve body pipe. The upper end of the inner bushing extends out of the outer bushing and the upper end extends outward in a circumferential direction to form an extension ring corresponding to the drive handle. The first locking groove and the second locking groove are located on the extension ring.

[0010] The valve stem is provided with a limiting groove at one end corresponding to the valve core, and the upper end of the valve core is limited within the limiting groove and is clearance-fitted with it.

[0011] Preferably, the handle unlocking assembly further includes a fingerprint sensing unit electrically connected to the control unit. The fingerprint sensing unit includes a fingerprint collector, a fingerprint processor, and a power supply device. The fingerprint collector is used to collect fingerprints. The fingerprint processor is used to compare whether the collected fingerprint and the preset fingerprint are consistent and convert the result of the comparison into an electrical signal and transmit it to the control unit. After receiving the signal from the fingerprint sensing unit, the control unit energizes the coil to attract the magnetic stop and compress the spring to disengage from the first locking groove / second locking groove.

[0012] Preferably, the fingerprint collector is equipped with a protective cover.

[0013] The beneficial effects of this utility model are as follows: the cooperation of the handle locking component and the handle unlocking component can realize the locking and unlocking of the second open position and the second blocking position of the handle, ensuring the stability of the cut-off and avoiding accidental opening. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0015] Figure 1 This is a front view structural diagram of an embodiment of the present utility model; Figure 2 This is a front sectional view of the unit shut-off valve in this embodiment of the present invention when the valve core is in the first blocking position and the magnetic stop block is in the first locking groove; Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 A partial front sectional view of the valve core in the embodiment of this utility model when the valve core is in the first blocking position and the magnetic block is disengaged from the first locking groove. Figure 5 This is a front sectional view of the unit shut-off valve in this embodiment of the present invention when the valve core is in the first open position and the magnetic stop is in the second locking groove; Figure 6 for Figure 5 Enlarged view of the structure at point B in the middle; In the diagram, 1. Valve body pipe; 2. Unit shut-off valve; 3. Magnetic stop block; 4. Spring; 5. Coil; 6. Fingerprint collector; 7. Protective cover; 21. Valve stem; 22. Valve core; 23. Valve seat; 24. Drive handle; 25. Outer bushing; 26. Inner bushing; 31. Slot; 101. Fluid inlet; 102. Fluid outlet; 211. Limiting groove; 241. Mounting groove; 260. Extension ring; 261. Moving channel; 262. First locking groove; 263. Second locking groove; 2621. Insert block; 2622. Flaring. Detailed Implementation

[0016] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0017] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0018] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0019] like Figures 1 to 6 As shown in the figure, a dual-stop structure combination valve with locking function is provided in an embodiment of the present invention. The valve body pipe 1 includes a fluid inlet 101, a fluid outlet 102, and a main medium flow channel connecting the fluid inlet 101 and the fluid outlet 102. At least two unit stop valves 2 for controlling the opening and closing of the main medium flow channel are sequentially arranged on the valve body pipe 1 from the fluid inlet 101 to the fluid outlet 102. The unit shut-off valve 2 includes a valve stem 21, a valve core 22, a valve seat 23, and a bushing assembly. One end of the bushing assembly is fixedly connected to the valve body pipe 1. The bushing assembly has a moving channel 261 at its center, which is threadedly connected to the valve stem 21. The valve stem 21 is located in the moving channel 261, with one end connected to the valve core 22, and the other end extending out of the moving channel 261 and fixed with a drive handle 24. The drive handle 24 drives the valve stem 21 to rotate around its center, causing the valve stem 21 and the valve core 22 to move axially relative to the moving channel 261. This results in a first blocking position where the valve core 22 and the valve seat 23 are sealed together, blocking the flow of the main medium, and a first open position where the valve core 22 is away from the valve seat 23. At least one unit shut-off valve has a handle locking assembly and a handle unlocking assembly provided between its bushing assembly and the drive handle 24. The handle locking assembly includes a magnetic stop 3 and a spring 4. The drive handle 24 has a mounting groove 241, and the magnetic stop 3 and the spring 4 are located within the mounting groove 241. Both ends of the spring 4 are connected to the bottom wall of the mounting groove 241 and the magnetic stop 3, respectively. The magnetic stop 3 rotates around the center of the valve stem 21 and has a second blocking position corresponding to the first blocking position of the valve core 22 and a second open position corresponding to the first open position of the valve core 22. The bushing assembly is provided with a first locking groove 262 and a second locking groove 263 corresponding to the second blocking position and the second open position of the magnetic stop 3, respectively. When the magnetic stop 3 is in the second blocking position / second open position, the end of the magnetic stop 3 away from the spring 4 passes through the mounting groove 241 and extends into the first locking groove 262 / second locking groove 263 to restrict the rotation of the drive handle 24. The handle unlocking assembly includes a control unit and a coil 5 arranged around the mounting slot 241. The control unit controls the coil 5 to be energized to attract the magnetic stop 3 and compress the spring 4 to disengage from the first locking slot 262 / second locking slot 263.

[0020] This setting allows the controller locking and unlocking components to work together to lock and unlock the controller in its second open and second blocked positions, ensuring the stability of the cutoff and preventing accidental opening.

[0021] The path length of the threaded engagement between the valve stem and bushing assembly can be adjusted so that the second blocking position and the second opening position of the magnetic stop are the same, thus requiring only one locking slot. The control unit is specifically a PLC control module.

[0022] The magnetic block 3 has a slot 31 at its lower end. The first locking slot 262 and the second locking slot 263 are respectively fixed with an upwardly extending plug 2621 that is adapted to the shape of the slot 31. When the magnetic block 3 is in the second blocking position / second open position, the slot 31 and the plug 2621 are engaged.

[0023] This design guides the entry of the magnetic stop, while also restricting its radial movement and improving the stability of the handle's locked position.

[0024] When the magnetic stop 3 is in the second blocking position / second open position, the bottom end of the slot 31 abuts against the top end of the insert 2621.

[0025] This setting allows the insert to limit the magnetic stop, further improving the stability of the handle lock.

[0026] The upper ends of the first locking groove 262 and the second locking groove 263 are both provided with flared openings 2622.

[0027] This setting reduces wear between the magnetic stop and the locking slot, while also making it easier for the magnetic stop to enter the locking slot without being obstructed.

[0028] The bushing assembly includes an outer bushing 25 and an inner bushing 26 arranged concentrically. The inner bushing 26 surrounds the valve stem 21, and the moving channel 261 is located at the center of the inner bushing 26. The outer bushing 25 is sleeved on the inner bushing 26 and fixedly fitted with it. The lower end of the outer bushing 25 is fixed to the valve body pipe 1. The upper end of the inner bushing 26 extends through the outer bushing 25 and extends outward around the circumference to form an extension ring 260 corresponding to the drive handle 24. The first locking groove 262 and the second locking groove 263 are located on the extension ring 260.

[0029] The valve stem 21 is provided with a limiting groove 211 at one end corresponding to the valve core 22, and the upper end of the valve core 22 is limited within the limiting groove 211 and is clearance-fitted with it.

[0030] With this setting, when the valve stem rotates and rises, the valve core rises and falls with it but does not rotate with it, reducing wear and tear between the valve core and the valve seat. At the same time, during the process of the valve core descending and forming a seal with the valve seat, it has an automatic sealing compensation effect, improving the stability of the seal.

[0031] The handle unlocking assembly also includes a fingerprint sensing unit electrically connected to the control unit. The fingerprint sensing unit includes a fingerprint collector 6, a fingerprint processor, and a power supply device. The fingerprint collector 6 is used to collect fingerprints. The fingerprint processor is used to compare whether the collected fingerprint and the preset fingerprint are consistent and convert the result of the comparison into an electrical signal and transmit it to the control unit. After receiving the signal from the fingerprint sensing unit, the control unit energizes the coil 5 to attract the magnetic stop 3 and compress the spring 4 to disengage from the first locking groove 262 / second locking groove 263.

[0032] This setting adds the ability to identify the object to be unlocked, preventing the valve from being maliciously opened or closed.

[0033] The fingerprint collector 6 is equipped with a protective cover 7.

[0034] This design provides a dustproof effect, preventing dust from entering the fingerprint scanner.

[0035] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A double-stop structure combination valve with locking function, comprising a valve body pipe (1), wherein the valve body pipe (1) includes a fluid inlet (101), a fluid outlet (102) and a main medium flow channel connecting the fluid inlet (101) and the fluid outlet (102), and at least two unit stop valves (2) for controlling the opening and closing of the main medium flow channel are sequentially provided on the valve body pipe (1) from the fluid inlet (101) to the fluid outlet (102). The unit shut-off valve (2) includes a valve stem (21), a valve core (22), a valve seat (23), and a bushing assembly. One end of the bushing assembly is fixedly connected to the valve body pipe (1). The center of the bushing assembly is provided with a moving channel (261) that is threadedly connected to the valve stem (21). The valve stem (21) is located in the moving channel (261) and one end is connected to the valve core (22). The other end extends out of the moving channel (261) and is fixed with a drive handle (24). The drive handle (24) drives the valve stem (21) to rotate around its center, causing the valve stem (21) and valve core (22) to move axially relative to the moving channel (261). This results in a first blocking position where the valve core (22) and valve seat (23) are sealed together, blocking the flow of the main medium, and a first open position where the valve core (22) is away from the valve seat (23). The characteristic feature is that: At least one unit shut-off valve has a handle locking assembly and a handle unlocking assembly provided between its bushing assembly and the drive handle (24). The handle locking assembly includes a magnetic stop (3) and a spring (4). The drive handle (24) has a mounting groove (241). The magnetic stop (3) and the spring (4) are located in the mounting groove (241). The two ends of the spring (4) are connected to the bottom wall of the mounting groove (241) and the magnetic stop (3), respectively. The magnetic stop (3) rotates around the center of the valve stem (21) and has a second blocking position corresponding to the first blocking position of the valve core (22) and a second open position corresponding to the first open position of the valve core (22). The bushing assembly is provided with a first locking groove (262) and a second locking groove (263) corresponding to the second blocking position and the second open position of the magnetic stop (3). When the magnetic stop (3) is in the second blocking position / second open position, the end of the magnetic stop (3) away from the spring (4) passes through the mounting groove (241) and extends into the first locking groove (262) / second locking groove (263) to restrict the rotation of the drive handle (24). The handle unlocking assembly includes a control unit and a coil (5) arranged around the mounting slot (241). The control unit controls the coil (5) to be energized to attract the magnetic stop (3) and compress the spring (4) to disengage from the first locking slot (262) / second locking slot (263).

2. The dual-stop structure combination valve with locking function according to claim 1, characterized in that: The magnetic stop (3) has a slot (31) at its lower end. The first locking slot (262) and the second locking slot (263) are respectively fixed with an upwardly extending plug (2621) that is adapted to the shape of the slot (31). When the magnetic stop (3) is in the second blocking position / second open position, the slot (31) and the plug (2621) are engaged.

3. A dual-stop structure combination valve with locking function according to claim 2, characterized in that: When the magnetic stop (3) is in the second blocking position / second open position, the bottom end of the slot (31) abuts against the top end of the plug (2621).

4. A dual-stop structure combination valve with locking function according to claim 1, characterized in that: The upper ends of the first locking groove (262) and the second locking groove (263) are both provided with flared openings (2622).

5. A dual-stop structure combination valve with locking function according to claim 1, characterized in that: The bushing assembly includes an outer bushing (25) and an inner bushing (26) arranged concentrically. The inner bushing (26) surrounds the valve stem (21), and the moving channel (261) is located at the center of the inner bushing (26). The outer bushing (25) is sleeved on the inner bushing (26) and fixedly fitted with it. The lower end of the outer bushing (25) is fixed to the valve body pipe (1). The upper end of the inner bushing (26) extends out of the outer bushing (25) and the upper end extends outward in a circumferential direction to form an extension ring (260) corresponding to the drive handle (24). The first locking groove (262) and the second locking groove (263) are located on the extension ring (260).

6. A dual-stop structure combination valve with locking function according to claim 1, characterized in that: The valve stem (21) is provided with a limiting groove (211) at one end corresponding to the valve core (22), and the upper end of the valve core (22) is limited to the limiting groove (211) and is clearance-fitted with it.

7. A dual-stop structure combination valve with locking function according to any one of claims 1-6, characterized in that: The handle unlocking assembly also includes a fingerprint sensing unit electrically connected to the control unit. The fingerprint sensing unit includes a fingerprint collector (6), a fingerprint processor, and a power supply device. The fingerprint collector (6) is used to collect fingerprints. The fingerprint processor is used to compare whether the collected fingerprint and the preset fingerprint are consistent and convert the consistent result into an electrical signal and transmit it to the control unit. After receiving the signal from the fingerprint sensing unit, the control unit energizes the coil (5) to attract the magnetic block (3) and compress the spring (4) to disengage from the first locking groove (262) / second locking groove (263).

8. A dual-stop structure combination valve with locking function according to claim 7, characterized in that: The fingerprint collector (6) is equipped with a protective cover (7).

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