NSCV shaft sleeve

Abstract

The utility model relates to the technical field of shaft sleeves, in particular to an NSCV shaft sleeve which comprises a valve body, a flow guide body, a flow guide frame, a copper guide sleeve, a valve rod, a connecting base, a sealing ring, a valve head, a gasket, a limiting piece and a second spring. A through hole is formed in the flow guide body, and a copper guide sleeve is arranged in the through hole; according to the utility model, two short copper guide sleeves assembled in the flow guide body are changed into a whole copper guide sleeve, and the whole copper guide sleeve penetrates through the interior of the whole flow guide body, so that the problem that the middle section of the flow guide body between the original guide sleeves is rusted and scaled for a long time can be prevented, the valve rod always moves smoothly in the copper guide sleeve, and the service life of the valve rod is prolonged. Meanwhile, the problems of upper and lower concentricity and clearance in integral assembly of the valve body are solved, the valve is opened and closed more smoothly, the guide sleeve is not prone to being clamped by the valve rod, and the performance of the valve is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shaft sleeve technical field, concretely relates to a NSCV shaft sleeve. BACKGROUND

[0002] The valve is a kind of device for controlling fluid flow, can cut off or communicate the flow of fluid in pipe, this is its most basic function. By the opening and closing of valve, the on-off of fluid can be controlled, to meet various process requirements, widely used in various industries, commercial and household scenes.

[0003] At present, the original guide fluid of existing NSCV valve is equipped with two short copper guide sleeves for the guidance of valve stem, and rust and scale problems are prone to occur in the middle section of guide fluid between copper guide sleeves after long-term use, which can increase surface roughness and increase friction, make the opening and closing of valve difficult, and the valve stem can be stuck in guide sleeve during the opening and closing of valve.

[0004] Based on this, the utility model designs a kind of NSCV shaft sleeve to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a kind of NSCV shaft sleeve.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of NSCV shaft sleeve, including valve body, guide fluid, guide frame, copper guide sleeve, valve stem, connecting seat, sealing ring, valve head, gasket, limit piece and second spring, the valve port inside fixed mounting of valve body upper end is equipped with guide frame, the center of guide frame is fixedly connected with guide fluid, the inside of guide fluid is equipped with through-hole, and copper guide sleeve is provided in through-hole, the inside of copper guide sleeve is movably installed with valve stem, the lower end of valve stem is installed with connecting seat, the connecting seat is fixedly installed in valve head, the valve head is arranged at the valve port of valve body lower end, the outside valve head of connecting seat is placed with limit piece above, second spring is provided between limit piece and guide fluid.

[0007] As a preferred technical scheme of the utility model, recess is symmetrically provided in the inside of guide fluid through-hole upper end, limit mechanism is connected in the recess, the limit mechanism includes limit block, first spring and camber, camber is opened in the limit block, the limit block is movably arranged in recess, one end of two first springs is fixedly connected with limit block, and the other end is fixedly connected in recess.

[0008] As a preferred technical scheme of the utility model, the upper and lower ends of copper guide sleeve are provided with matching end, the matching end of copper guide sleeve upper end is equipped with clamping slot.

[0009] As a preferred technical scheme of the utility model, the clamping groove opened on the copper guide sleeve is connected with the limiting mechanism arranged in the through hole of the flow guide body.

[0010] As a preferred technical scheme of the utility model, the sealing groove is arranged in the inside of the connecting seat and the valve rod connecting part.

[0011] As a preferred technical scheme of the utility model, the gasket is arranged at the abutting part of the valve head and the valve rod, and the outer layer of the valve head is wrapped with a rubber sleeve.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The two short copper guide sleeves arranged in the flow guide body are improved to a whole copper guide sleeve in the utility model, the whole copper guide sleeve penetrates the inside of the flow guide body, the problem of rust and scale accumulation in the middle section of the flow guide body between the original guide sleeves is prevented, the movement of the valve rod in the copper guide sleeve is always smooth, the concentricity and gap problems of the whole valve body assembly are improved, the valve opening and closing are smoother, the valve rod is not easy to be stuck in the guide sleeve, and the performance of the valve is improved.

[0014] The limiting mechanism arranged symmetrically in the inside of the flow guide body can be matched with the clamping groove opened on the copper guide sleeve, the installation of the copper guide sleeve and the flow guide body is limited, and the copper guide sleeve can be installed in the flow guide body. DRAWINGS

[0015] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model.

[0016] Figure 1 It is the whole front view structural schematic diagram of the utility model;

[0017] Figure 2 It is the whole bottom view structural schematic diagram of the utility model;

[0018] Figure 3 It is the whole explosion structural schematic diagram of the utility model;

[0019] Figure 4 It is the whole vertical section structural schematic diagram of the utility model;

[0020] Figure 5 It is the connecting seat local section view enlarged structural schematic diagram of the utility model;

[0021] Figure 6 It is the flow guide body local section view enlarged structural schematic diagram of the utility model;

[0022] Figure 7 It is the cross section structure schematic view of the flow guide body of the utility model;

[0023] Figure 8 It is the copper guide sleeve structure schematic view of the utility model;

[0024] Figure 9 It is the limiting mechanism structure schematic view of the utility model.

[0025] In the drawing: 1, valve body; 2, flow guide body; 201, recess; 202, limiting mechanism; 2021, limiting block; 2022, first spring; 2023, camber surface; 3, flow guide frame; 4, copper guide sleeve; 401, matching end; 402, clamping groove; 5, valve rod; 6, connecting seat; 7, sealing ring; 8, valve head; 801, rubber sleeve; 9, gasket; 10, limiting piece; 11, second spring. DETAILED DESCRIPTION

[0026] The utility model will be described below in conjunction with the drawings in the embodiments of the utility model Figures 1-9 It is obvious that the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] EMBODIMENT

[0028] Please refer to Figure 1 , Figure 2 , Figure 3 And Figure 4 The utility model provides the following technical scheme: a NSCV bushing, including valve body 1, flow guide body 2, flow guide frame 3, copper guide sleeve 4, valve rod 5, connecting seat 6, sealing ring 7, valve head 8, gasket 9, limiting piece 10 and second spring 11, the valve port inside the upper end of valve body 1 is fixedly installed with flow guide frame 3, the center of flow guide frame 3 is fixedly connected with flow guide body 2, the inside of flow guide body 2 is provided with through hole, and copper guide sleeve 4 is arranged in the through hole, valve rod 5 is movably installed in the inside of copper guide sleeve 4, connecting seat 6 is installed in valve head 8, valve head 8 is arranged at the valve port of the lower end of valve body 1, limiting piece 10 is placed above valve head 8 on the outside of connecting seat 6, and second spring 11 is arranged between limiting piece 10 and flow guide body 2.

[0029] By the copper guide sleeve 4 of the whole root arranged in the flow guide body 2, the middle section of flow guide body 2 can be prevented from rusting and scaling for a long time, the overall assembly concentricity and gap problem of valve body are improved, and valve rod 5 is not easy to be stuck in the guide sleeve, so that the valve opening and closing are more smooth.

[0030] Please refer to Figure 4 , Figure 6 , Figure 7 , Figure 8 and Figure 9 , the inner part of the upper end of the through hole of the flow guide body 2 is symmetrically provided with a groove 201, the groove 201 is connected with a limiting mechanism 202, the limiting mechanism 202 includes a limiting block 2021, a first spring 2022 and an arc surface 2023, the arc surface 2023 is provided on the limiting block 2021, the limiting block 2021 is movably arranged in the groove 201, one end of the two first springs 2022 is fixedly connected with the limiting block 2021, and the other end is fixedly connected in the groove 201.

[0031] The upper and lower ends of the copper guide sleeve 4 are provided with a matching end 401, and the matching end 401 of the upper end of the copper guide sleeve 4 is provided with a clamping groove 402.

[0032] The clamping groove 402 provided on the copper guide sleeve 4 is connected with the limiting mechanism 202 provided in the through hole of the flow guide body 2.

[0033] Through the cooperation of the limiting mechanism 202 and the clamping groove 402 provided in the flow guide body 2, the copper guide sleeve 4 can be limited when the copper guide sleeve 4 is installed with the flow guide body 2, and the installation of the copper guide sleeve 4 can be easily determined.

[0034] Please refer to Figure 1 , Figure 4 and Figure 5 , a sealing groove is provided in the inner part of the connection between the connecting seat 6 and the valve rod 5, and the sealing ring 7 is placed in the sealing groove provided in the connecting seat 6.

[0035] The gasket 9 is provided at the contact position of the valve head 8 and the valve rod 5, and the outer layer of the valve head 8 is wrapped with a rubber sleeve 801.

[0036] The sealing ring 7 is provided at the connection between the valve rod 5 and the connecting seat 6, which can enhance the sealing performance of the connection, and the rubber sleeve 801 provided on the outer layer of the valve head 8 can seal the valve port.

[0037] The working principle and use process of the utility model: when installing cooperatively copper guide sleeve 4 and guide body 2, the end of copper guide sleeve 4 with clamping slot 402 is installed cooperatively from the lower end of the internal through hole of guide body 2 upward, when the upper end of copper guide sleeve 4 reaches the position of limiting mechanism 202, the upper movement of copper guide sleeve 4 will generate extrusion force on arc surface 2023 to press limiting block 2021 into recess 201, when clamping slot 402 reaches the position of limiting mechanism 202, limiting block 2021 loses extrusion force and is bounced into clamping slot 402 under the action of the rebound force of two first springs 2022, the impact sound can determine that copper guide sleeve 4 has been installed in place, the installation of copper guide sleeve 4 has the limiting effect, and the design that copper guide sleeve 4 penetrates through the whole guide body 2 can prevent the problem of rust and scale in the middle section of guide body 2 for a long time, improve the concentricity and gap of the whole valve body, make the opening and closing of the valve more smooth, the valve stem 5 is not easy to be stuck in the guide sleeve, and the performance of the valve is improved.

[0038] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and not for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A NSCV bushing, comprising a valve body (1), a flow guide (2), a flow guide frame (3), a copper guide bushing (4), a valve stem (5), a connecting seat (6), a sealing ring (7), a valve head (8), a gasket (9), a limiting piece (10) and a second spring (11), characterized in that: The valve body (1) upper end valve mouth inside fixed installation has flow guide frame (3), the flow guide frame (3) center place fixedly connected with flow guide body (2), the flow guide body (2) inside is provided with through-hole, and the through-hole is provided with copper guide sleeve (4), the copper guide sleeve (4) inside movably installs valve stem (5), the valve stem (5) lower end is installed with connecting seat (6), the connecting seat (6) is fixedly installed in valve head (8), the valve head (8) is arranged at the valve body (1) lower end valve mouth, the connecting seat (6) outside valve head (8) above is placed with limiting piece (10), the limiting piece (10) and flow guide body (2) between be provided with second spring (11).

2. A NSCV bushing according to claim 1, wherein: The inside of the through-hole of the flow guide body (2) is symmetrically provided with a recess (201), the recess (201) is connected with a limiting mechanism (202), the limiting mechanism (202) includes a limiting block (2021), a first spring (2022) and an arc surface (2023), the limiting block (2021) is provided with an arc surface (2023), the limiting block (2021) is movably arranged in the recess (201), one end of the first spring (2022) is fixedly connected with the limiting block (2021), and the other end is fixedly connected in the recess (201).

3. The NSCV bushing of claim 1, wherein: The upper and lower ends of the copper guide sleeve (4) are provided with a matching end (401), and the matching end (401) of the upper end of the copper guide sleeve (4) is provided with a clamping groove (402).

4. The NSCV bushing of claim 1, wherein: The clamping groove (402) provided on the copper guide sleeve (4) is connected with the limiting mechanism (202) provided in the through-hole of the flow guide body (2).

5. The NSCV bushing of claim 1, wherein: The connecting seat (6) is connected with the valve stem (5), and the inside of the connecting seat (6) is provided with a sealing groove, and the sealing ring (7) is placed in the sealing groove of the connecting seat (6).

6. The NSCV bushing of claim 1, wherein: The valve head (8) is provided with a gasket (9) at the contact position with the valve stem (5), and the outer layer of the valve head (8) is wrapped with a rubber sleeve (801).

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