Feed water regulating valve

Abstract

The utility model relates to the technical field of valves, and discloses a feed water regulating valve which comprises a valve body and a rotary switch, the top of the valve body is fixedly connected with a valve cover, a valve rod is arranged in the valve body, and the top of the valve rod penetrates through the valve cover and then is fixedly connected with the rotary switch. The slide rail is fixedly arranged at the top of the valve cover and is arranged along the circumferential direction of the valve rod; the locking mechanism comprises a shell and an abutting unit; one end of the shell is fixedly connected to the side face of the valve rod. An abutting unit is arranged in the shell, the abutting unit and the sliding rail are oppositely arranged, and the abutting unit is used for abutting against the side face of the sliding rail to limit rotation of the valve rod; and the unlocking mechanism is used for adjusting the distance between the tail end of the abutting unit and the side face of the sliding rail so as to lock or unlock the locking mechanism. The water supply regulating valve has the effect of preventing the running state of the water supply regulating valve from being changed due to mistaken touch.

Description

Technical Field

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

[0002] The high-pressure differential feedwater regulating valve is a control and regulating throttle valve used in high-pressure working conditions. It is widely used in high-pressure and high-temperature feedwater pipelines in thermal power plants, nuclear power plants, petroleum, chemical industry, pharmaceuticals, fertilizers and other systems to control and adjust the amount of water sprayed to achieve the purpose of regulating the temperature of boiler superheated steam. It can also be used in other boiler feedwater pipelines to adjust the feedwater flow rate. It is an indispensable key valve in the boiler steam pipeline.

[0003] The regulating handle of the existing water supply regulating valve is exposed to the outside, and there is a possibility that non-staff members may accidentally touch it, thereby changing the operating state of the valve and causing an operating accident. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a water supply regulating valve to solve the problem that the regulating handle of the existing water supply regulating valve is easily touched by mistake.

[0005] The utility model solves the above technical problems through the following technical means:

[0006] A water supply regulating valve comprises a valve body and a rotary switch, wherein a valve cover is fixedly connected to the top of the valve body, a valve stem is arranged in the valve body, and the top of the valve stem penetrates the valve cover and is fixedly connected to the rotary switch, and further comprises:

[0007] A slide rail, which is fixedly arranged on the top of the valve cover and arranged circumferentially along the valve stem;

[0008] The locking mechanism comprises a housing and an abutment unit; one end of the housing is fixedly connected to the side of the valve stem; an abutment unit is arranged in the housing, the abutment unit is arranged opposite to the slide rail, and the abutment unit is used to abut against the side of the slide rail to limit the rotation of the valve stem;

[0009] The unlocking mechanism is used to adjust the distance between the end of the abutting unit and the side of the slide rail to lock or unlock the locking mechanism.

[0010] Further, the abutment unit comprises a shaft sleeve, an abutment shaft and an abutment block;

[0011] The shaft sleeve is fixedly connected in the housing and arranged radially along the slide rail; a window is provided on the side of the shaft sleeve along the axial direction of the shaft sleeve, and a plurality of stoppers are provided at one edge of the window along the length direction of the window;

[0012] The abutment shaft is inserted into the shaft sleeve, one end of the abutment shaft is fixedly connected to the abutment block, the other end of the abutment shaft is provided with a slot for the unlocking mechanism to be inserted and fixed, and a lever is fixedly connected to the side of the abutment shaft, and the lever passes through the window;

[0013] After the unlocking mechanism is inserted into the slot and fixed, the abutment shaft is rotated so that the shifting rod cooperates with a plurality of stoppers to fix the abutment shaft.

[0014] Furthermore, the unlocking mechanism comprises: a handle, two elastic insertion rods, two clamping blocks and a limiting ring;

[0015] The limiting ring is provided with two slideways, the two elastic plug rods respectively penetrate the two slideways, the clamping blocks correspond to the elastic plug rods one by one, one end of the elastic plug rod is fixedly connected to the handle, and one side of the other end is fixedly connected to the corresponding clamping block;

[0016] After the two elastic insertion rods are inserted into the slots, the two clamping blocks are clamped and fixed with the two clamping grooves in a one-to-one correspondence, and the limiting ring is slid to limit the two elastic insertion rods.

[0017] Furthermore, a movable cover is provided on the top of the shell, the movable cover is located directly above the window on the shaft sleeve, and the movable cover is locked with the shell through a detachable locking mechanism.

[0018] Further, the detachable locking mechanism includes a lead lock.

[0019] The beneficial effects of the utility model are:

[0020] The utility model locks and unlocks the valve stem by arranging a slide rail, a locking mechanism and a corresponding unlocking mechanism, thereby avoiding accidental touch by non-staff without affecting the normal operation of the water supply regulating valve and improving the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0022] Figure 1 This is a structural schematic diagram of a water supply regulating valve of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the locking mechanism of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the unlocking mechanism of the utility model;

[0025] In the above drawings: 1. valve body; 2. water inlet; 3. valve core; 4. valve stem; 5. valve cover; 6. slide rail; 7. rotary switch; 8. locking mechanism; 81. movable cover; 82. abutment unit; 821. abutment shaft; 822. bushing; 823. abutment block; 824. lever; 825. stopper; 83. housing; 9. water outlet; 10. unlocking mechanism; 101. elastic plug rod; 102. handle; 103. limiting ring; 104. clamping block. DETAILED DESCRIPTION

[0026] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are only for exemplary descriptions, and they are only schematic diagrams, not physical diagrams, and cannot be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the figures may be omitted.

[0027] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the figure. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the figures are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. In the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0028] like Figure 1-3 As shown, the embodiment of the utility model proposes a water supply regulating valve, including a valve body 1 and a rotary switch 7, the top of the valve body 1 is fixedly connected with a valve cover 5, a valve stem 4 is arranged in the valve body 1, and the top of the valve stem 4 passes through the valve cover 5 and is fixedly connected with the rotary switch 7; and also includes:

[0029] The slide rail 6 is fixedly arranged on the top of the valve cover 5 and arranged in a circle along the circumference of the valve stem 4;

[0030] The locking mechanism 8 includes a housing 83 and an abutment unit 82; one end of the housing 83 is fixedly connected to the side of the valve stem 4; the housing 83 is provided with an abutment unit 82, the abutment unit 82 is arranged opposite to the slide rail 6, and the abutment unit 82 is used to abut against the side of the slide rail 6 to limit the rotation of the valve stem 4;

[0031] The unlocking mechanism 10 is used to adjust the distance between the end of the abutting unit 82 and the side of the slide rail 6 to lock or unlock the locking mechanism 8 .

[0032] In this embodiment, a water inlet 2 is provided on one side of the valve body 1, a water outlet 9 is provided on the other side of the valve body 1, a valve core 3 is further provided in the valve body 1, and the valve core 3 is fixedly connected to the valve stem 4. The valve stem 4 is rotated by rotating the rotary switch 7, so as to adjust the position of the valve core 3 to adjust the opening. In this embodiment, the slide rail 6 is circular, the valve stem 4 is located at the center of the circular slide rail 6, one end of the housing 83 of the locking mechanism 8 is fixedly connected to the valve stem 4, and the other end is slidably connected to the slide rail 6, and an abutment unit 82 abutting against the slide rail 6 is provided in the housing 83. When the locking mechanism 8 is in an unlocked state, the abutment unit 82 does not abut against the slide rail 6, the rotating handle 102 rotates to drive the valve stem 4 to rotate, and the valve stem 4 drives the unlocking mechanism 10 to slide along the slide rail 6; when the locking mechanism 8 is in a locked state, the abutment unit 82 abuts against the slide rail 6 to limit the rotation of the valve stem 4.

[0033] The locking mechanism 8 is provided with a corresponding unlocking mechanism 10 . In this embodiment, the unlocking mechanism 10 adjusts the distance between the end of the abutting unit 82 in the locking mechanism 8 and the side of the slide rail 6 to put the locking mechanism 8 in a locked state or an unlocked state.

[0034] In this embodiment, the abutment unit 82 includes: a shaft sleeve 822, an abutment shaft 821 and an abutment block 823;

[0035] The shaft sleeve 822 is fixedly connected in the housing 83 and arranged radially along the slide rail 6; a window is opened on the side of the shaft sleeve 822 along the axial direction of the shaft sleeve, and a plurality of stoppers 825 are arranged at one edge of the window along the length direction of the window;

[0036] The abutment shaft 821 is inserted into the shaft sleeve 822, one end of the abutment shaft 821 is fixedly connected to the abutment block 823, and the other end of the abutment shaft 821 is provided with a slot for the unlocking mechanism 10 to be inserted and fixed; a lever 824 is fixedly connected to the side of the abutment shaft 821, and the lever 824 passes through the window;

[0037] After the unlocking mechanism 10 is inserted into the slot and fixed, the abutting shaft 821 is rotated so that the lever 824 cooperates with a plurality of stoppers 825 to fix the abutting shaft 821 .

[0038] The sleeve 822 is fixedly arranged in the shell 83 and faces the slide rail 6. After the abutment shaft 821 extends along the sleeve 822 toward the slide rail 6, the abutment block 823 located at the end of the abutment shaft 821 abuts against the side of the slide rail 6; a window is opened on the side of the sleeve 822 along the axial direction of the sleeve, and a plurality of blocks 825 are distributed on the side of the window along the length direction of the window. In this embodiment, there are two blocks 825; a lever 824 is arranged on the side of the abutment shaft 821, and the lever 824 passes through the window and cooperates with the block 825 to limit the sliding of the abutment shaft 821 along the length direction of the sleeve 822; in some embodiments, a bayonet is formed between two adjacent blocks 825, so that the rod body of the lever 824 is fixed in the bayonet, thereby limiting the rotation of the abutment shaft 821 in the sleeve 822.

[0039] In this embodiment, two oppositely arranged clamping grooves are provided on the inner wall of the slot, and the two clamping grooves are used for the unlocking mechanism 10 to be clamped and fixed.

[0040] The unlocking mechanism 10 includes: a handle 102, two elastic inserting rods 101, two clamping blocks 104 and a limiting ring 103;

[0041] The limiting ring 103 is provided with two slideways, and two elastic plug rods are respectively inserted into the two slideways, and the clamping blocks correspond to the elastic plug rods one by one. One end of the elastic plug rod is fixedly connected to the handle, and the outer side of the other end is fixedly connected to the corresponding clamping block;

[0042] After the two elastic rods 101 are inserted into the slots, the two clamping blocks 104 are clamped and fixed with the two clamping grooves one by one, and the sliding limiting ring 103 is used to limit the two elastic rods 101. In this embodiment, before the two elastic rods 101 are inserted into the slots, the limiting ring 103 is moved along the two elastic rods 101 to a position close to the handle 102, so that the range of movement of the ends of the two elastic rods 101 is larger, which facilitates the clamping blocks 104 at the ends of the two elastic rods 101 to be clamped and fixed with the corresponding clamping grooves, and then the limiting ring 103 is moved along the shafts of the two elastic rods 101 to a position away from the handle 102, thereby limiting the range of movement of the ends of the elastic rods 101 and preventing the clamping blocks 104 from being separated from the corresponding clamping grooves. The rotation angle and sliding distance of the abutment shaft 821 are adjusted through the handle 102.

[0043] After unlocking, move the limiting ring 103 along the two elastic rods 101 to a position close to the handle 102, and then use your hands to move the two elastic rods 101 closer together so that the clamping blocks 104 at the ends of the two elastic rods 101 disengage from the corresponding clamping grooves, so that the elastic rods 101 can be withdrawn from the slots.

[0044] In this embodiment, a movable cover 81 is also provided on the top of the housing 83. The movable cover 81 is located directly above the window on the sleeve 822, and the movable cover 81 is locked with the housing 83 through a detachable locking mechanism. By providing the movable cover 81, when the water supply regulating valve needs to be adjusted urgently and the unlocking mechanism 10 is not carried, an external force can be used to open the detachable locking mechanism to open the movable cover 81, so that the lever 824 can be manually adjusted to move the abutment shaft 821 and the abutment block 823 away from the slide rail 6, and the locking mechanism 8 is adjusted to the unlocked state. In this embodiment, the detachable locking mechanism includes a lead lock. The lead lock is easy to operate and has strong anti-counterfeiting properties. It is convenient for daily operation and maintenance personnel to check the locking mechanism 8.

[0045] Working principle:

[0046] One end of the housing 83 in the locking mechanism 8 is fixedly connected to the valve stem 4, and the other end of the housing 83 is slidably connected to the slide rail 6; the housing 83 as a whole can slide along the slide rail 6 as the valve stem 4 rotates. The abutment unit 82 provided in the housing 83 is used to abut and cooperate with the slide rail 6 to limit the rotation of the valve stem 4; the end of the abutment unit 82 is adjusted to abut or stay away from the slide rail 6, thereby adjusting the locking mechanism 8 to lock or unlock; by setting a dedicated unlocking mechanism 10 for adjustment, it is possible to prevent non-staff members from accidentally touching the rotary switch 7 and causing an accident; the detachable lock structure can also be artificially destroyed, and the lever 824 of the abutment unit 82 can be directly manually adjusted to make the end of the abutment unit 82 abut or stay away from the slide rail 6, thereby enhancing the emergency handling capability.

[0047] The above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model. The technology, shape, and structure that are not described in detail in the utility model are all well-known technologies.

Claims

1. A water supply regulating valve, comprising a valve body and a rotary switch, wherein a valve cover is fixedly connected to the top of the valve body, a valve stem is arranged in the valve body, and the top of the valve stem passes through the valve cover and is fixedly connected to the rotary switch, characterized in that: Also includes: A slide rail, which is fixedly arranged on the top of the valve cover and arranged circumferentially along the valve stem; A locking mechanism, the locking mechanism comprising a housing and an abutment unit, one end of the housing is fixedly connected to the side of the valve stem, the abutment unit is located in the housing, the abutment unit is arranged opposite to the slide rail, and the abutment unit is used to abut against the side of the slide rail to limit the rotation of the valve stem; The unlocking mechanism is used to adjust the distance between the end of the abutting unit and the side of the slide rail to lock or unlock the locking mechanism.

2. A water supply regulating valve according to claim 1, characterized in that: The abutment unit comprises a shaft sleeve, an abutment shaft and an abutment block; The shaft sleeve is fixedly connected in the housing and arranged radially along the slide rail; a window is provided on the side of the shaft sleeve along the axial direction of the shaft sleeve, and a plurality of stoppers are provided at one edge of the window along the length direction of the window; The abutment shaft is inserted into the shaft sleeve, one end of the abutment shaft is fixedly connected to the abutment block, the other end of the abutment shaft is provided with a slot for the unlocking mechanism to be inserted and fixed, and a lever is fixedly connected to the side of the abutment shaft, and the lever passes through the window; After the unlocking mechanism is inserted into the slot and fixed, the abutment shaft is rotated so that the shifting rod cooperates with a plurality of stoppers to fix the abutment shaft.

3. A water supply regulating valve according to claim 2, characterized in that: Two oppositely arranged clamping grooves are arranged on the inner wall of the slot, and the two clamping grooves are used for clamping and fixing the unlocking mechanism.

4. A water supply regulating valve according to claim 3, characterized in that: The unlocking mechanism also includes: a handle, two elastic insertion rods, two clamping blocks and a limiting ring; The limiting ring is provided with two slideways, the two elastic plug rods respectively penetrate the two slideways, the clamping blocks correspond to the elastic plug rods one by one, one end of the elastic plug rod is fixedly connected to the handle, and one side of the other end is fixedly connected to the corresponding clamping block; After the two elastic insertion rods are inserted into the slots, the two clamping blocks are clamped and fixed with the two clamping grooves in a one-to-one correspondence, and the limiting ring is slid to limit the two elastic insertion rods.

5. A water supply regulating valve according to claim 2, characterized in that: A movable cover is also arranged on the top of the shell. The movable cover is located just above the window on the shaft sleeve and is locked with the shell through a detachable locking mechanism.

6. A water supply regulating valve according to claim 5, characterized in that: The removable locking mechanism includes a lead lock.

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