Height pilot valve

Abstract

The utility model relates to the technical field of height pilot valves, in particular to a height pilot valve which comprises a first valve body, a second valve body, a column body, a bolt, a valve rod, a limiting disc, a spring, a valve disc, a screw, a small diaphragm, a sealing ring, a large diaphragm, a valve seat, a guide sleeve and an adjusting rod. According to the height pilot valve, the design of a double-diaphragm structure is adopted, under the combined action of the small diaphragm and the large diaphragm, the flexibility of the diaphragms is utilized, the opening and closing sensitivity of the pilot valve is more sensitive, the diaphragms are improved, nylon is arranged in the middle of the diaphragms, the pressure resistance performance of the diaphragms is improved, the diaphragms are not prone to being damaged, and the service life of the pilot valve is prolonged. An adjusting rod of the pilot valve is made of 304 stainless steel, a guide sleeve of the pilot valve is made of aluminum bronze, the matching precision between the adjusting rod and the guide sleeve is improved, the guide sleeve made of the copper is more sensitive and durable in guide movement, and the pilot valve is more stable in operation. And the performance of the pilot valve is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to height pilot valve technical field, concretely relates to a height pilot valve. BACKGROUND

[0002] The height pilot valve is an important auxiliary valve, which has a wide application and an important role in the fluid control system. It has precise control and adjustment functions, safety protection, multi-functionality and modular structure, etc., so that it has been widely applied in various industrial fields.

[0003] At present, the existing height pilot valve used for precisely controlling the water level height of the water tank on the high tower water tank is mostly single diaphragm structure, and the opening and closing sensitivity of the pilot valve has error value when in use, and the existing diaphragm has poor compression resistance, and the guide sleeve of the existing pilot valve is usually made of polytetrafluoroethylene resin and has low cooperation precision with the adjusting rod, and has the problem of not being sensitive enough when doing guiding movement.

[0004] Based on this, the utility model discloses a height pilot valve to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a height pilot valve.

[0006] To achieve the above object, the utility model provides the following technical scheme: a height pilot valve, including first valve body, second valve body, column, bolt, valve rod, limit disc, spring, valve disc, screw, small diaphragm, sealing ring, big diaphragm, valve seat, guide sleeve and adjusting rod, the inside upper end of first valve body is fixedly installed with valve disc through screw, the valve disc and first valve body junction are provided with small diaphragm, the small diaphragm is connected with valve rod, the valve rod is movably arranged at the center of valve disc, the lower end of valve disc is provided with sealing ring, the sealing ring is connected with valve rod, the lower end of valve rod is connected in valve seat, the valve seat is fixedly arranged in the inside of second valve body, big diaphragm is arranged between valve seat and sealing ring.

[0007] As a preferred technical scheme of the utility model, the inside center of second valve body is provided with through hole, the column is fixedly installed at the lower end of second valve body and is provided with through hole, the inside of column is provided with guide sleeve, the inside cooperation of guide sleeve is connected with adjusting rod, and the top end of adjusting rod is arranged in the through hole.

[0008] As a preferred technical scheme of the utility model, nylon is arranged at the middle of small diaphragm and big diaphragm.

[0009] As a preferred technical scheme of the utility model, the first valve body and the second valve body are fixedly connected through a plurality of bolts, and the edge of the large diaphragm is fixed between the first valve body and the second valve body.

[0010] As a preferred technical scheme of the utility model, the movable installation of the valve rod upper end is limited to the limit disc, the limit disc is provided with a spring between the first valve body, one end of the spring is fixedly connected with the first valve body, and the other end is fixedly connected with the limit disc.

[0011] As a preferred technical scheme of the utility model, the adjusting rod is integrally made of 304 stainless steel material, and the guide sleeve is integrally made of aluminum bronze material.

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

[0013] 1. The height pilot valve structure of the utility model adopts the design of double diaphragm structure, under the joint action of the small diaphragm and the large diaphragm, the softness of the diaphragm is utilized, the sensitivity of the opening and closing of the pilot valve is more sensitive, the diaphragm is improved and nylon is arranged in the middle, the performance of the diaphragm in the pressure resistance aspect is improved, the diaphragm is not easy to damage, thereby the error value of the on-off valve is reduced, accurate control is realized, and the pilot valve performance is improved.

[0014] 2. The pilot valve adjusting rod in the utility model is integrally made of 304 stainless steel material, and the guide sleeve is integrally made of aluminum bronze material, the cooperation precision between the adjusting rod and the guide sleeve is improved, the cooperation effect of the adjusting rod and the guide sleeve is ensured, the guide sleeve made of copper material is more sensitive and durable in the guiding movement, and the performance of the pilot valve is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings are used to provide further understanding of the utility model, 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. In the drawings:

[0016] Fig. 1 It is the whole front view structure schematic view of the utility model;

[0017] Fig. 2 It is the whole left view structure schematic view of the utility model;

[0018] Fig. 3 It is the whole cross section structure schematic view of the utility model;

[0019] Fig. 4 It is the positive cross section local enlarged structure schematic view of the utility model;

[0020] Fig. 5 It is the side cross section local enlarged structure schematic view of the utility model;

[0021] Fig. 6 The utility model discloses a column body positive section amplification structure schematic diagram.

[0022] In the drawing: 1, first valve body;2, second valve body;201, through -hole;3, column body;4, bolt;5, valve rod;6, limit disc;7, spring;8, valve disc;9, screw;10, small diaphragm;11, sealing ring;12, big diaphragm;13, valve seat;14, guide sleeve;15, adjusting rod. DETAILED DESCRIPTION

[0023] The utility model discloses an embodiment of the utility model will be combined below Figs. 1-6 The embodiments described are merely a part of the embodiments of the utility model, and 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 range of the utility model protection.

[0024] EMBODIMENT

[0025] Please refer to Figs. 1-6 The utility model provides the following technical scheme: a height pilot valve includes first valve body 1, second valve body 2, column body 3, bolt 4, valve rod 5, limit disc 6, spring 7, valve disc 8, screw 9, small diaphragm 10, sealing ring 11, big diaphragm 12, valve seat 13, guide sleeve 14 and adjusting rod 15, and the upper end in the inside of first valve body 1 is fixedly installed with valve disc 8 through screw 9, is provided with small diaphragm 10 at the junction of valve disc 8 and first valve body 1, and small diaphragm 10 is connected with valve rod 5, and valve rod 5 is movably arranged at the center of valve disc 8, and the lower end of valve disc 8 is provided with sealing ring 11, and sealing ring 11 is connected with valve rod 5, and the lower end of valve rod 5 is connected in valve seat 13, and valve seat 13 is fixedly arranged in the inside of second valve body 2, and is provided with big diaphragm 12 between valve seat 13 and sealing ring 11.

[0026] The inside center of second valve body 2 is provided with through -hole 201, and column body 3 is fixedly installed at the through -hole 201 at the lower end of second valve body 2, and the inside of column body 3 is provided with guide sleeve 14, and adjusting rod 15 is connected in the cooperation of guide sleeve 14, and the top of adjusting rod 15 is arranged in through -hole 201.

[0027] Small diaphragm 10 and big diaphragm 12 are all provided with nylon at the middle.

[0028] Through the double diaphragm structure design in the valve body, the sensitivity of the opening and closing of the pilot valve is more sensitive, and the performance of the diaphragm in the pressure resistance is improved by setting nylon in the middle of the diaphragm, so that the error value of the opening and closing of the switch valve is reduced, and the performance of the pilot valve is improved.

[0029] The first valve body 1 and the second valve body 2 are fixedly connected through a plurality of bolts 4, and the edge of the large diaphragm 12 is fixed between the first valve body 1 and the second valve body 2.

[0030] The movable mounting of the upper end of the valve stem 5 is a limiting disc 6, and a spring 7 is arranged between the limiting disc 6 and the first valve body 1, one end of the spring 7 is fixedly connected with the first valve body 1, and the other end is fixedly connected with the limiting disc 6.

[0031] The adjusting rod 15 is made of 304 stainless steel, and the guide sleeve 14 is made of aluminum bronze.

[0032] Through the selection of the materials of the guide sleeve 14 and the adjusting rod 15, the cooperation precision of the guide sleeve 14 and the adjusting rod 15 is improved, meanwhile, the guide sleeve is made of copper, and the guide movement is more sensitive and durable, and the performance of the pilot valve is improved.

[0033] The working principle and use process of the utility model are as follows: in specific use, based on the interaction of fluid pressure and spring force, when the fluid pressure reaches or exceeds the set value, the pilot valve will be automatically opened, the excessive pressure is released, the system safety is protected, through the double diaphragm structure design of the pilot valve, the opening and closing of the pilot valve is more sensitive, the error value of the on-off valve is reduced, the pilot valve performance is improved, the nylon is arranged in the diaphragm, the pressure resistance of the diaphragm is improved, the overflow pressure can be adjusted through the pressure regulating spring of the pilot valve, so that the accurate control of the fluid medium is realized, in the use process, the adjusting rod 15 can be adjusted according to the actual situation, so that the opening of the valve is changed, and then the flow or pressure of the fluid is controlled, the adjusting rod 15 is made of 304 stainless steel, the guide sleeve 14 is made of aluminum bronze, the cooperation precision between the adjusting rod 15 and the guide sleeve 14 is improved, the cooperation effect of the adjusting rod 15 and the guide sleeve 14 is ensured, and the guide sleeve made of copper is more sensitive and durable in guide movement.

[0034] Finally, it should be pointed out that: the above only for preferred embodiments of the utility model have been described, and are not used for limiting the utility model, although the utility model is 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 each embodiment, or make equivalent replacement to part technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A high pilot valve, comprising a first valve body (1), a second valve body (2), a cylinder (3), a bolt (4), a valve rod (5), a limit disc (6), a spring (7), a valve disc (8), a screw (9), a small diaphragm (10), a sealing ring (11), a large diaphragm (12), a valve seat (13), a guide sleeve (14) and an adjusting rod (15), characterized in that: A valve disc (8) is fixedly installed at the upper end of the interior of the first valve body (1) by screws (9). A small diaphragm (10) is provided at the connection between the valve disc (8) and the first valve body (1). The small diaphragm (10) is connected to the valve stem (5). The valve stem (5) is movably disposed at the center of the valve disc (8). A sealing ring (11) is provided at the lower end of the valve disc (8). The sealing ring (11) is connected to the valve stem (5). The lower end of the valve stem (5) is connected to the valve seat (13). The valve seat (13) is fixedly disposed inside the second valve body (2). A large diaphragm (12) is provided between the valve seat (13) and the sealing ring (11).

2. A high pilot valve according to claim 1, characterized in that: The second valve body (2) has a through hole (201) at its center. The column (3) is fixedly installed at the through hole (201) at the lower end of the second valve body (2). The column (3) has a guide sleeve (14) inside. The guide sleeve (14) is connected to an adjusting rod (15). The top of the adjusting rod (15) is located in the through hole (201).

3. A high pilot valve according to claim 1, characterized in that: Nylon is provided at the middle of both the small diaphragm (10) and the large diaphragm (12).

4. A high pilot valve according to claim 1, characterized in that: The first valve body (1) and the second valve body (2) are fixedly connected by multiple bolts (4), and the edge of the large diaphragm (12) is fixed between the first valve body (1) and the second valve body (2).

5. A height pilot valve according to claim 1, characterized in that: A limiting plate (6) is movably installed on the upper end of the valve stem (5). A spring (7) is provided between the limiting plate (6) and the first valve body (1). One end of the spring (7) is fixedly connected to the first valve body (1), and the other end is fixedly connected to the limiting plate (6).

6. A height pilot valve according to claim 1, characterized in that: The adjusting rod (15) is made of 304 stainless steel, and the guide sleeve (14) is made of aluminum bronze.

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