Gate valve with flow fine adjustment function

Abstract

The utility model discloses a gate valve with a flow fine adjustment function, which comprises a valve body structure, an adjusting structure is arranged in the valve body structure, the valve body structure comprises a valve body internally provided with a sealing ring, a valve cover is fixedly mounted above the valve body through a fixing nut, a hand wheel threaded rod is rotatably mounted on the valve cover, and the hand wheel threaded rod is fixedly connected with the valve body. A spline groove is formed in the hand wheel threaded rod in a penetrating mode, the bottom of the hand wheel threaded rod and a connecting frame are fixedly installed through a connecting bearing seat, the connecting frame is fixedly connected with a valve plate, a matching hole facilitating matched connection of an adjusting structure is formed in the upper portion of the valve plate, and meanwhile a through hole is formed in the surface of the valve plate in a penetrating mode. The adjusting structure comprises a spline shaft, a holding wheel is fixed to the upper portion of the spline shaft, and an adjusting column connected with the matching hole in a matched mode is fixedly installed at the bottom of the spline shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a gate valve with a flow rate fine-tuning function. Background Art

[0002] Gate valves not only have a simple structure and excellent sealing performance, but also have advantages such as low fluid resistance, low driving torque required for opening and closing, simple operation, and easy opening and closing. They can be used in ring network pipelines where media flows in both directions. In recent years, they have experienced rapid development and are widely used. The up and down movement of the gate disc can achieve fluid flow regulation. The variety and number of gate valves used are still expanding, and they are developing in the direction of high temperature, high pressure, large diameter, high sealing, and long life. Their reliability and adaptability are important indicators and directions for enterprise development. With the development of the petrochemical industry, especially in oil and natural gas pipelines, refinery cracking units, offshore oil, direct coal liquefaction units, and the nuclear industry, gate valves have been widely used. Currently, most gate valves have a large flow range during flow regulation, especially under low flow conditions. However, industrial production industries require precise flow values, so continuous adjustment is required to achieve the required flow value. The adaptability of gate valves is increasingly difficult to meet market demand. Utility Model Content

[0003] The purpose of the present utility model is to address the deficiencies of the prior art and provide a gate valve with a flow fine-tuning function to solve the problem proposed in the above background technology that most current gate valves have a large flow range variation during the flow regulation process, especially under low flow conditions. However, the industrial production industry requires precise flow values, so continuous adjustment is required to achieve the required flow value, and the adaptability of gate valves is increasingly difficult to meet market demand.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a gate valve with a flow fine-tuning function, comprising a valve body structure, wherein an adjustment structure is provided inside the valve body structure;

[0005] The valve body structure includes a valve body with a sealing ring arranged inside, and a valve cover is fixedly installed on the valve body through a fixing nut, and a handwheel threaded rod is rotatably installed on the valve cover;

[0006] A spline groove is formed through the handwheel threaded rod, and the bottom of the handwheel threaded rod is fixedly connected to the connecting frame through a bearing seat.

[0007] By adopting the above technical solution, the connecting bearing seat is provided to achieve fixed and rotating matching connection installation.

[0008] Preferably, the connecting frame is fixedly connected to the valve plate, and a matching hole is opened above the valve plate to facilitate the matching connection of the adjustment structure, and a through hole is opened through the surface of the valve plate.

[0009] By adopting the technical scheme, the matching hole is arranged, so that the matching connection is achieved.

[0010] Preferably, the adjusting structure comprises a spline shaft with a handle wheel fixed thereon, and the spline shaft is fixedly installed with an adjusting column matched with the matching hole, and the surface of the spline shaft is engraved with scale lines for facilitating observation by the operator.

[0011] By adopting the technical scheme, the adjusting column is arranged, so that the lifting adjustment is achieved.

[0012] Preferably, the connecting frame is arranged in one group, and the connecting frame is symmetrically fixed about the axis of the connecting bearing seat.

[0013] By adopting the technical scheme, the connecting frame is arranged, so that the mounting and fixing are achieved.

[0014] Preferably, the through hole is arranged in 20 groups, and each group of through holes is arranged through the surface of the valve plate.

[0015] By adopting the technical scheme, the valve plate is arranged, so that the inside and outside are arranged.

[0016] Preferably, the spline shaft and the spline groove form a sliding matching structure, and the spline shaft and the spline groove are coaxially and concentrically matched and connected.

[0017] By adopting the technical scheme, the spline shaft is arranged, so that the sliding matching is achieved.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] (1) The adjusting structure is arranged, so that the current most gate valves are difficult to meet the market demand in the process of flow regulation, especially under the condition of small flow, the flow range changes greatly, the flow value needs to be accurately regulated in the industrial production industry, and the adaptability of the gate valve is more and more difficult to meet the market demand. When the flow is finely adjusted, the operator holds the handle wheel, drives the adjusting column to move through the spline shaft, and adjusts the valve plate when the adjusting column moves under the action of force. When the adjusting column and the valve plate are adjusted, the operator finely adjusts the flow in the valve body.

[0020] (2) The valve body structure is arranged, so that the valve plate cannot be adjusted under the condition of large flow. When large flow adjustment is needed, the operator rotates the handle screw rod to drive the valve plate to move. When the valve plate moves up and down, the adjusting column and the spline shaft move synchronously. When the valve plate carries the adjusting column and the spline shaft to move synchronously, the large flow adjustment in the valve body is changed. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a front view sectional structure schematic view of the utility model;

[0022] Figure 2 It is a valve body, sealing ring, valve cover, hand wheel threaded rod, connecting bearing seat, connecting frame and valve plate structure schematic view of the utility model;

[0023] Figure 3 It is a hand wheel threaded rod and spline groove local structure schematic view of the utility model;

[0024] Figure 4 It is a connecting bearing seat, matching hole, through hole, connecting frame and valve plate structure schematic view of the utility model;

[0025] Figure 5 It is an adjusting structure schematic view of the utility model.

[0026] In the drawing: 1, valve body structure; 101, valve body; 102, sealing ring; 103, valve cover; 104, hand wheel threaded rod; 105, spline groove; 106, connecting bearing seat; 107, matching hole; 108, through hole; 109, connecting frame; 1010, valve plate; 2, adjusting structure; 201, spline shaft; 202, handle wheel; 203, adjusting column. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a gate valve with flow fine adjustment function, such as Figure 1 、 Figure 2 、 Figure 3 And Figure 4As shown, including the valve body structure 1, the valve body structure 1 includes the valve body 101 provided with a sealing ring 102, and the valve cover 103 is fixedly installed on the valve body 101 through the fixing nut, and the hand wheel threaded rod 104 is rotatably installed on the valve cover 103, the spline groove 105 is provided on the hand wheel threaded rod 104, and the hand wheel threaded rod 104 is fixedly installed on the connecting bearing seat 106 through the connecting bearing seat 106. The connecting frame 109 is provided with one group, and the connecting frame 109 is fixedly connected about the axis of the connecting bearing seat 106. By setting one group of two parts, the fixed installation of the above-mentioned parts is realized, and the symmetry of the installation of the above-mentioned parts is realized. And by setting one group of two parts, the practicality and synchronous force driving adjustment of the installation of the above-mentioned parts are realized.

[0029] Further, the connecting frame 109 is fixedly connected with the valve plate 1010, and the valve plate 1010 is provided with a matching hole 107 for facilitating the adjustment of the structure 2, and the through hole 108 is provided on the surface of the valve plate 1010. There are 20 groups, and a single group of through holes 108 is provided on the surface of the valve plate 1010. By setting 20 groups of 8 structures, the intercommunication of the structure is realized, and the liquid flowability of the structure is realized. And by setting 20 groups of 40 structures, the practicality and equal distance distribution of the structure are realized.

[0030] As shown in the figure, Figure 5 The valve body structure 1 is provided with an adjusting structure 2, the adjusting structure 2 includes a spline shaft 201 fixedly provided with a handle 202, and the spline shaft 201 is fixedly installed with an adjusting column 203 matched with the matching hole 107, and the spline shaft 201 is engraved with scale lines for facilitating the observation of the operator. The spline shaft 201 and the spline groove 105 constitute a sliding matching structure, and the spline shaft 201 and the spline groove 105 are coaxially and concentrically matched. By constituting the sliding matching structure of the above-mentioned two, the connection of the sliding matching of the above-mentioned two is realized, and the sliding matching practicality of the above-mentioned two is realized. And by constituting the sliding matching structure of the above-mentioned two, the sliding matching lifting adjustment of the above-mentioned two is realized, and the spline shaft 201 and the spline groove 105 are coaxially and concentrically matched. At the same time, the symmetry of the axis and the axial symmetry of the above-mentioned two is realized.

[0031] In the above scheme, when fine adjustment of flow is needed, the operator holds the handle 202 to drive the adjusting column 203 through the spline shaft 201, when the adjusting column 203 is forced to move, it moves in opposite direction with the valve plate 1010, when the adjusting column 203 moves in opposite direction with the valve plate 1010, the operator fine adjusts the flow inside the valve body 101, when large flow adjustment is needed, the operator rotates the handle screw rod 104 to drive the valve plate 1010 to move, when the valve plate 1010 moves up and down, the adjusting column 203 and the spline shaft 201 move synchronously, when the valve plate 1010 carries the adjusting column 203 and the spline shaft 201 to move synchronously, the large flow inside the valve body 101 is adjusted.

[0032] The terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only a simplified description for the convenience of describing the utility model, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the protection scope of the utility model.

[0033] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A gate valve with flow trimming function, comprising a valve body structure (1), characterized in that: The valve body structure (1) is internally provided with an adjusting structure (2); The valve body structure (1) comprises a valve body (101) internally provided with a sealing ring (102), and a valve cover (103) is fixedly installed above the valve body (101) through a fixing nut, and a hand wheel threaded rod (104) is rotatably installed on the valve cover (103); A spline groove (105) is formed through the hand wheel threaded rod (104), and the hand wheel threaded rod (104) is fixedly installed on a connecting bracket (109) through a connecting bearing seat (106).

2. A gate valve with flow trim function according to claim 1, characterized in that: The connecting bracket (109) is fixedly connected with a valve plate (1010), and a matching hole (107) for matching connection of the adjusting structure (2) is formed through the valve plate (1010), and a through hole (108) is formed through the surface of the valve plate (1010).

3. A gate valve with flow trim function according to claim 1, characterized in that: The adjusting structure (2) comprises a spline shaft (201) fixedly provided with a hand wheel (202) at the top, and the spline shaft (201) is fixedly installed at the bottom with an adjusting column (203) matched with the matching hole (107), and the surface of the spline shaft (201) is engraved with scale lines for convenient observation of the operator.

4. The gate valve with flow trimming function according to claim 1, characterized in that: The connecting bracket (109) is provided with one set, and the connecting bracket (109) is symmetrically fixed about the axis of the connecting bearing seat (106).

5. A gate valve with flow trim function according to claim 2, characterized in that: The through hole (108) is provided with 20 groups, and a single group of through holes (108) is formed through the surface of the valve plate (1010).

6. A gate valve with flow trim function according to claim 3, characterized in that: The spline shaft (201) and the spline groove (105) constitute a sliding matching structure, and the spline shaft (201) and the spline groove (105) are coaxially and concentrically matched.

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