Flange type rising stem gate valve

Abstract

The utility model relates to the related field of rising stem gate valves, in particular to a flange type rising stem gate valve which comprises a valve body, a hand wheel, a valve rod nut, a valve rod, a valve plate, a fixing sleeve, a sliding cylinder, a sliding ring, clamping teeth, a clamping groove, a spring, a supporting block, an extrusion rod, a signal switch and the like. The clamping teeth, the clamping groove and the signal switch are arranged, the clamping teeth are matched with the clamping groove to fix the position of the hand wheel, the situation that the valve is opened and closed due to the fact that the hand wheel is accidentally touched is reduced, the sliding cylinder needs to be pulled downwards firstly when the rising stem gate valve is opened and closed, and the sliding cylinder drives the sliding ring and the extrusion rod to move downwards. The extrusion rod extrudes the signal switch to generate an electric signal, the electric signal is transmitted to the control background connected with the extrusion rod, background personnel can quickly know that the valve is possibly in the operation process or is ready to operate, the system maintenance and inspection efficiency can be improved, and therefore the state of the rising stem gate valve can be remotely monitored conveniently; and the safety of the rising stem gate valve can be improved.

Description

Technical Field

[0001] The utility model relates to the field of rising stem gate valves, in particular to a flange type rising stem gate valve. Background Art

[0002] Rising stem gate valve, also known as rising stem gate valve, is a common type of valve, mainly used to regulate the flow of fluids (such as water, oil, gas, etc.) in pipeline systems. Its main feature is that the movement of the valve stem can be directly observed, because the valve stem and the hand wheel or operating device are usually exposed and not wrapped inside the valve body. This design allows the user to intuitively understand the degree of opening or closing of the valve. Rising stem gate valves have the advantages of intuitive display, easy maintenance and adjustment, and are widely used in petroleum, chemical, water conservancy, electric power, urban construction and other fields.

[0003] Existing rising-stem gate valves usually open and close the valve plate by directly turning the handwheel. There is a lack of a locking assembly for the handwheel, which makes it easy for unauthorized personnel or accidental touches to cause the valve to open and close. In addition, it is difficult to remotely monitor the status of the rising-stem gate valve, which can easily reduce the safety of the gate valve. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a flange type rising stem gate valve to solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a flange type rising stem gate valve, comprising a valve body, a hand wheel rotatably mounted on the top of the valve body, a valve stem nut fixed in the hand wheel, a valve stem threadedly connected to the valve stem nut is arranged in the valve stem nut, the valve stem movably passes through the top of the valve body, and the bottom of the valve stem is connected to a valve plate slidably mounted in the valve body, a fixing sleeve located below the hand wheel is mounted on the valve body, and a plurality of annularly distributed latch teeth are mounted on the bottom end surface of the hand wheel;

[0006] A sliding cylinder and a sliding ring are slidably mounted on the fixed sleeve, the sliding cylinder is fitted with the top of the sliding ring, and the inner ring of the sliding cylinder is provided with a plurality of slots around the circumference, and a plurality of latch teeth are movably extended into the plurality of slots in a one-to-one corresponding manner;

[0007] The inner ring of the sliding cylinder is provided with a limit block located below the clamping groove, and the limit block movably extends into the limit groove opened on the side surface of the fixed sleeve;

[0008] A spring is installed at the bottom of the sliding ring, and one end of the spring away from the sliding ring is connected to a support block fixed at the bottom of the fixed sleeve;

[0009] The bottom end surface of the sliding ring is fixed with an extrusion rod, which movably penetrates the inner side of the spring and the top end surface of the supporting block. A signal switch connected to the valve body is arranged below the extrusion rod.

[0010] Preferably, a flange is provided at each of the left and right ends of the outer side of the valve body.

[0011] Preferably, the width of the limit block in the horizontal direction is slightly smaller than the inner width of the limit slot, and the length of the limit block in the vertical direction is smaller than the inner length of the limit slot.

[0012] Preferably, a group of springs, support blocks and extrusion rods are respectively provided at the left and right ends of the bottom of the sliding ring.

[0013] Preferably, a spacing is provided between the bottom end surface of the extrusion rod and the top end surface of the signal switch, and the spacing is smaller than the thickness of the latching tooth in the up-down direction.

[0014] Preferably, the sliding cylinder is provided with anti-skid stripes along the circumferential outer surface, and the side surface of the sliding cylinder is provided with a plurality of anti-skid stripes.

[0015] Beneficial effects of the utility model:

[0016] The utility model is provided with latch teeth, latch grooves and signal switches, and the position of the hand wheel is fixed by the latch teeth cooperating with the latch grooves, thereby reducing the possibility of valve switching caused by accidentally touching the hand wheel. When opening and closing the rising stem gate valve, the sliding cylinder needs to be pulled downward first, and the sliding cylinder drives the sliding ring and the extrusion rod to move downward. The extrusion rod squeezes the signal switch to generate an electrical signal, and the electrical signal is transmitted to the connected control background. The background personnel can quickly understand that the valve may be in the operation process or is ready to be operated, which helps to improve the efficiency of system maintenance and inspection, thereby facilitating remote monitoring of the status of the rising stem gate valve and helping to improve the safety of the rising stem gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the front cross-sectional connection structure of the fixing sleeve of the utility model;

[0019] Figure 3 It is a schematic diagram of the top view cross-sectional connection structure of the fixing sleeve of the utility model.

[0020] Among them: valve body-1, handwheel-2, valve stem nut-3, valve stem-4, valve plate-5, flange-6, fixing sleeve-7, sliding cylinder-8, sliding ring-9, latching teeth-10, latching groove-11, limit block-12, limit groove-13, spring-14, support block-15, extrusion rod-16, signal switch-17, anti-slip stripes-18. DETAILED DESCRIPTION

[0021] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0022] like Figure 1 As shown, the utility model provides a flange type rising stem gate valve, comprising a valve body 1, a hand wheel 2 rotatably mounted on the top of the valve body 1, a valve stem nut 3 fixed in the hand wheel 2, a valve stem 4 threadedly connected to the valve stem nut 3 is arranged in the valve stem nut 3, the valve stem 4 vertically moves through the top of the valve body 1, and the bottom of the valve stem 4 is connected to a valve plate 5 slidably mounted in the valve body 1, and the valve plate 5 can move vertically up and down along the inside of the valve body 1 to realize the opening and closing of the rising stem gate valve;

[0023] In this embodiment, a flange 6 is provided at both ends of the outer side of the valve body 1, so as to facilitate the connection of the rising stem gate valve with the external pipeline through the flange 6;

[0024] Specifically, when in use, the flange on the pipeline is connected through the flange 6 on the valve body 1 to realize the connection of the rising stem gate valve to the external pipeline. When using the rising stem gate valve, the valve stem nut 3 is driven to rotate by turning the hand wheel 2, and the valve stem nut 3 drives the valve stem 4 to move vertically in the valve body 1, and the valve stem 4 drives the valve plate 5 to move up and down synchronously to realize the opening and closing of the rising stem gate valve.

[0025] like Figure 2 and Figure 3 As shown, in this embodiment, a fixing sleeve 7 located below the hand wheel 2 is locked and fixed on the valve body 1, and a plurality of annularly distributed latch teeth 10 are installed on the bottom end surface of the hand wheel 2;

[0026] A sliding cylinder 8 and a sliding ring 9 are slidably mounted on the fixed sleeve 7. Both the sliding cylinder 8 and the sliding ring 9 can move vertically up and down along the side surface of the fixed sleeve 7. The sliding cylinder 8 fits the top of the sliding ring 9, and the inner ring of the sliding cylinder 8 is provided with a plurality of slots 11 around the circumferential direction. A plurality of latch teeth 10 are movably extended into the plurality of slots 11 in a one-to-one corresponding manner. The latch teeth 10 cooperate with the latch grooves 11 to limit the hand wheel 2 to prevent the hand wheel 2 from being rotated at will.

[0027] A spring 14 is installed at the bottom of the sliding ring 9. The end of the spring 14 away from the sliding ring 9 is connected to a support block 15 fixed to the bottom of the fixed sleeve 7, so that the sliding cylinder 8 and the sliding ring 9 can be moved upward and reset by the elastic force of the spring 14.

[0028] The bottom end surface of the sliding ring 9 is fixed with an extrusion rod 16, which movably penetrates the inner side of the spring 14 and the top end surface of the support block 15. A signal switch 17 connected to the valve body 1 is arranged below the extrusion rod 16. The extrusion rod 16 faces the input end of the signal switch 17, so that the extrusion rod 16 squeezes the signal switch 17 to generate an electrical signal and transmits it to the control backend;

[0029] In this embodiment, the inner ring of the sliding cylinder 8 is provided with a limit block 12 located below the clamping groove 11, and the limit block 12 movably extends into the limit groove 13 provided on the side surface of the fixed sleeve 7, and the limit block 12 cooperates with the limit groove 13 to provide a limit to the position of the sliding cylinder 8, thereby providing a limit to the position of the hand wheel 2;

[0030] The horizontal width of the limit block 12 is slightly smaller than the inner width of the limit slot 13, and the vertical length of the limit block 12 is smaller than the inner length of the limit slot 13, so that the position of the limit block 12 can be slightly adjusted to align the slot 11 with the latching tooth 10;

[0031] Among them, a group of springs 14, a support block 15 and an extrusion rod 16 are respectively arranged at the left and right ends of the bottom of the sliding ring 9, so that the sliding cylinder 8 and the sliding ring 9 can be stably reset by the action of the two groups of springs 14;

[0032] There is a gap between the bottom end surface of the extrusion rod 16 and the top end surface of the signal switch 17, and the gap is smaller than the thickness of the latch 10 in the vertical direction, so that the extrusion rod 16 can squeeze and turn on the signal switch 17 after the latch 11 is separated from the latch 10;

[0033] In this embodiment, the sliding cylinder 8 is provided with anti-skid stripes 18 along the outer surface of the circumference, and the side surface of the sliding cylinder 8 is provided with a plurality of anti-skid stripes 18 to prevent slipping when the sliding cylinder 8 is pulled;

[0034] In this embodiment, the signal switch 17 is connected to the external control background through a transmission cable, so that the electrical signal generated by the signal switch 17 is transmitted to the control background, so that the background staff can find out in time that someone is operating the rising stem gate valve;

[0035] Specifically, before operating the hand wheel, it is necessary to push the sliding cylinder 8 downward, the sliding cylinder 8 drives the sliding ring 9 and the extrusion rod 16 to move downward, the extrusion rod 16 squeezes the opening signal switch 17 to generate an electrical signal, and the electrical signal is transmitted to the control background. At this time, the background personnel know that someone is operating the rising stem gate valve, so as to realize remote monitoring of the state of the rising stem gate valve, prevent unauthorized personnel from operating the rising stem gate valve, and improve the safety performance of the rising stem gate valve;

[0036] When the sliding cylinder 8 moves downward, it drives the slot 11 to move downward and separate from the latch tooth 10, and the sliding ring 9 squeezes the spring 14 to contract when it moves downward. Only when the slot 11 is separated from the latch tooth 10 can the hand wheel 2 be rotated to operate the rising stem gate valve to open and close. After the operation of the rising stem gate valve is completed, the thrust on the sliding cylinder 8 is canceled, and the sliding cylinder 8 is subjected to the elastic force of the spring 14 to drive the slot 11 to move upward and reset. The slot 11 cooperates with the latch tooth 10 to provide a limit for the hand wheel 2 again to prevent the valve from being opened and closed due to accidental touch. If the slot 11 is not aligned with the latch tooth 10, the sliding cylinder 8 can be slightly rotated to drive the slot 11 to rotate slightly horizontally for a certain distance, so that the slot 11 can be aligned with the latch tooth 10 for placement, thereby improving the flexibility of the slot 11 and the latch tooth 10 during use.

[0037] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is 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 flange type rising stem gate valve, comprising a valve body, a hand wheel rotatably mounted on the top of the valve body, a valve stem nut fixed in the hand wheel, a valve stem threadedly connected to the valve stem nut is arranged in the valve stem nut, the valve stem movably passes through the top of the valve body, and the bottom of the valve stem is connected to a valve plate slidably mounted in the valve body; It is characterized in that The valve body is provided with a fixed sleeve located below the hand wheel, and the bottom end surface of the hand wheel is provided with a plurality of annularly distributed latch teeth; A sliding cylinder and a sliding ring are slidably mounted on the fixed sleeve, the sliding cylinder is fitted with the top of the sliding ring, and the inner ring of the sliding cylinder is provided with a plurality of slots around the circumference, and a plurality of latch teeth are movably extended into the plurality of slots in a one-to-one corresponding manner; The inner ring of the sliding cylinder is provided with a limit block located below the clamping groove, and the limit block movably extends into the limit groove opened on the side surface of the fixed sleeve; A spring is installed at the bottom of the sliding ring, and one end of the spring away from the sliding ring is connected to a support block fixed at the bottom of the fixed sleeve; The bottom end surface of the sliding ring is fixed with an extrusion rod, which movably penetrates the inner side of the spring and the top end surface of the supporting block. A signal switch connected with the valve body is arranged below the extrusion rod.

2. According to claim 1, a flange type rising stem gate valve is characterized in that: A flange is respectively arranged at the left and right ends of the outer side of the valve body.

3. According to claim 1, a flange type rising stem gate valve is characterized in that: The width of the limit block in the horizontal direction is slightly smaller than the inner width of the limit slot, and the length of the limit block in the vertical direction is smaller than the inner length of the limit slot.

4. According to claim 1, a flange type rising stem gate valve is characterized in that: A group of springs, support blocks and extrusion rods are respectively arranged at the left and right ends of the bottom of the sliding ring.

5. According to claim 1, a flange type rising stem gate valve is characterized in that: A spacing is provided between the bottom end surface of the extrusion rod and the top end surface of the signal switch, and the spacing is smaller than the thickness of the latching teeth in the up-down direction.

6. A flange type rising stem gate valve according to claim 1, characterized in that: The sliding cylinder is provided with anti-skid stripes along the circumferential outer surface, and the side surface of the sliding cylinder is provided with a plurality of anti-skid stripes.

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