Flow control valve with multiple adjusting modes

Abstract

The utility model discloses a flow control valve with multiple adjusting modes, which belongs to the technical field of valves and comprises a valve body, a valve seat, a valve port, a valve core and a valve cover. A support is fixedly installed at the upper end of the valve deck, and the support is provided with a dual-mode flow control mechanism with a flow coarse adjustment mode and a flow fine adjustment mode. The dual-mode flow control mechanism comprises a coarse adjustment assembly and a fine adjustment assembly, and the output end of the fine adjustment assembly is fixedly connected with the valve element. The flow control limiting mechanism is arranged at the driving ends of the coarse adjustment assembly and the fine adjustment assembly. By means of the mode, the coarse adjustment hand wheel and the fine adjustment hand wheel are matched to adjust the opening degree of the valve port so as to control the flow, rapid control over the flow can be achieved through matching of the two adjustment modes, accurate control over the flow can also be achieved, and the coarse adjustment hand wheel and the fine adjustment hand wheel both rotate in situ and do not have displacement in the vertical direction; therefore, connection of the two with the output end of the electric execution unit or the pneumatic execution unit is facilitated, and automatic control is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a flow control valve with multiple regulation modes. BACKGROUND

[0002] In the chemical industry, flow control valves are key equipment for regulating the flow, pressure or flow direction of fluids (liquids, gases or slurries), directly affecting process stability, safety and efficiency.

[0003] Chinese patent CN217481996U discloses a flow control valve, which includes a valve body and a valve stem, a water inlet and a water outlet are provided on the valve body, the valve stem is used to block the water inlet, an adjusting block is rotatably connected in the valve body, the valve stem is provided in the adjusting block and is slidingly connected to the adjusting block, a clearance groove is provided on the adjusting block, a plurality of water passages are provided on the inner wall of the clearance groove, the water outlet is located on the rotating path of the adjusting block, the water outlet is used to communicate with the water passages, when the valve stem is separated from the water inlet, the water inlet and the water passages are communicated, the valve stem is moved away from the water inlet, then the adjusting block is rotated, so that the water passages of different sizes are aligned and communicated with the water outlet, at this time, the water inlet, the water passages and the water outlet are communicated with each other, and the size of the flow can be controlled, but when the control valve is used to adjust the flow size, it is not convenient to control the small amplitude movement of the valve stem, so multiple adjustments are usually required to obtain the required flow.

[0004] Therefore, the utility model discloses a flow control valve with multiple regulation modes is designed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the above shortcomings of the prior art, the utility model provides a flow control valve with multiple regulation modes.

[0006] To achieve the above purpose, the utility model is realized by the following technical scheme:

[0007] A flow control valve with multiple regulation modes, comprising a valve body, a valve seat, a valve port, a valve core and a valve cover;

[0008] The valve seat is fixedly installed in the valve body, a plurality of valve ports are uniformly and equidistantly arranged on the side surface of the valve seat in a circular array, and the inner side of the valve seat is provided with a valve core matched with the valve seat and used for blocking the valve port;

[0009] The upper end of the valve cover is fixedly installed with a support, and the support is provided with a double-mode flow control mechanism having two modes of coarse regulation and fine regulation of flow;

[0010] The double-mode flow control mechanism comprises a coarse adjustment assembly and a fine adjustment assembly, the coarse adjustment assembly is arranged on a support, the fine adjustment assembly is arranged inside the coarse adjustment assembly, and an output end of the fine adjustment assembly is fixedly connected with a valve core; a flow control limiting mechanism is arranged at driving ends of the coarse adjustment assembly and the fine adjustment assembly, and is used for controlling locking and fixing of the driving ends of the coarse adjustment assembly and the fine adjustment assembly.

[0011] Further, the coarse adjustment assembly comprises a coarse adjustment hand wheel, an outer sleeve and a coarse adjustment seat, the outer sleeve is rotatably connected with the support through a bearing, and an outer wall of the coarse adjustment seat is limitingly and slidably connected with an inner wall of a valve cover; an upper end of the outer sleeve is fixedly connected with the coarse adjustment hand wheel, a lower end of the outer sleeve extends into an inside of the coarse adjustment seat, and threads for threadedly connecting the outer sleeve and the coarse adjustment seat are arranged between the outer sleeve and the coarse adjustment seat.

[0012] Further, the fine adjustment assembly comprises a fine adjustment hand wheel, an inner sleeve, a fine adjustment rod and a connecting rod, the inner sleeve is rotatably installed at an inside of the outer sleeve, an upper end of the inner sleeve is fixedly connected with the fine adjustment hand wheel, the fine adjustment rod is arranged at an inside of the coarse adjustment seat, and threads for threadedly connecting the fine adjustment rod and the coarse adjustment seat are arranged between the fine adjustment rod and the coarse adjustment seat; a lower end of the fine adjustment rod is fixedly connected with the connecting rod, and the connecting rod is limitingly and slidably connected with the inner sleeve.

[0013] Further, a lower end of the fine adjustment rod is fixedly connected with the valve core.

[0014] Further, a pitch of the threads between the fine adjustment rod and the coarse adjustment seat is smaller than a pitch of the threads between the outer sleeve and the coarse adjustment seat.

[0015] Further, the flow control limiting mechanism comprises a coarse adjustment limiting assembly and a fine adjustment limiting assembly, the coarse adjustment limiting assembly is arranged between the support and the outer sleeve, is used for locking and fixing rotation of the coarse adjustment hand wheel, and the fine adjustment limiting assembly is arranged between the coarse adjustment hand wheel and the inner sleeve, and is used for locking and fixing rotation of the inner sleeve.

[0016] Further, the coarse adjustment limiting assembly comprises a connecting wheel, a clamping block, a fixing seat, a spring and a pull plate, the connecting wheel is fixedly connected with the outer sleeve, the fixing seat is fixedly connected with the support, the clamping block is limitingly and slidably connected with the fixing seat, a periphery of the connecting wheel is uniformly provided with a toothed structure, an end of the clamping block close to the connecting wheel is clamped with the toothed structure, and the other end of the clamping block is fixedly connected with the pull plate through the fixing seat; the clamping block is sleeved with the spring at an outside, and two ends of the spring are fixedly connected with the fixing seat and the pull plate respectively.

[0017] Further, the fine adjustment limiting assembly also comprises a connecting wheel, a clamping block, a fixing seat, a spring and a pull plate, the connecting wheel is fixedly connected with the inner sleeve, the fixing seat is fixedly connected with the upper end of the coarse adjustment hand wheel, the clamping block is limitingly and slidably connected with the fixing seat, the outer edge of the connecting wheel is uniformly provided with a toothed structure, one end of the clamping block close to the connecting wheel is clamped with the toothed structure, and the other end of the clamping block is fixedly connected with the pull plate through the fixing seat; the outer side of the clamping block is provided with the spring, and the two ends of the spring are fixedly connected with the fixing seat and the pull plate respectively.

[0018] Compared with the prior art, the utility model has the advantages that: 1. In the utility model, the vertical movement of the valve core is controlled by the coarse adjustment hand wheel and the fine adjustment hand wheel, which realizes the function of adjusting the valve opening to control the flow size, and the two adjustment modes can realize the rapid control of the flow and the accurate control of the flow, and the coarse adjustment hand wheel and the fine adjustment hand wheel are rotated in the original position without vertical displacement, so that the connection of the two with the output end of the electric or pneumatic actuating unit is facilitated, and the automatic control is facilitated.

[0019] 2. The flow control limiting mechanism can quickly lock and fix the driving end of the coarse adjustment assembly and the fine adjustment assembly, so that the flow remains in the current state, and the stability of the flow control is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0021] Figure 1 It is a perspective view of a flow control valve with multiple adjustment modes of the utility model;

[0022] Figure 2 It is a front view of a flow control valve with multiple adjustment modes of the utility model;

[0023] Figure 3 It is a front half-section view of a flow control valve with multiple adjustment modes of the utility model;

[0024] Figure 4 It is Figure 1 It is an enlarged view of A in the figure.

[0025] The numbers in the figure respectively represent:

[0026] 10, valve body; 11, valve seat; 12, valve port; 13, valve core; 14, valve cover; 15, bracket; 2, dual-mode flow control mechanism; 21, coarse adjustment hand wheel; 22, outer sleeve; 23, coarse adjustment seat; 24, fine adjustment hand wheel; 25, inner sleeve; 26, fine adjustment rod; 27, connecting rod; 3, flow control limiting mechanism; 31, connecting wheel; 32, clamping block; 33, fixing seat; 34, spring; 35, pull plate. DETAILED DESCRIPTION

[0027] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0028] In the following description, "left", "right", "front", "back", "up", "down" are oriented with the perspective of the front view.

[0029] Embodiment one: in some embodiments, referring to the drawings of the specification Figures 1-4 A flow control valve with multiple adjustment modes, comprising a valve body 10, a valve seat 11, a valve port 12, a valve core 13 and a valve cover 14,

[0030] The valve seat 11 is fixedly installed in the valve body 10, and a plurality of valve ports 12 are uniformly and equidistantly arranged on the side surface of the valve seat 11 in a circular array, and the inner side of the valve seat 11 is provided with a valve core 13 matched with the valve seat 11 and used for plugging the valve port 12;

[0031] The upper end of the valve cover 14 is fixedly installed with a bracket 15, and the bracket 15 is provided with a dual-mode flow control mechanism 2 having two modes of coarse adjustment and fine adjustment of flow;

[0032] The dual-mode flow control mechanism 2 comprises a coarse adjustment assembly and a fine adjustment assembly, the coarse adjustment assembly is arranged on the bracket 15, the fine adjustment assembly is arranged on the inner side of the coarse adjustment assembly, and the output end of the fine adjustment assembly is fixedly connected with the valve core 13; a flow control limiting mechanism 3 is arranged at the driving end of the coarse adjustment assembly and the fine adjustment assembly, and is used for controlling the locking and fixing of the driving end of the coarse adjustment assembly and the fine adjustment assembly.

[0033] In the utility model, through the coarse adjustment assembly can realize the quick adjustment to valve core 13, through the fine adjustment assembly can realize the fine adjustment to valve core 13, and the cooperation of coarse adjustment assembly and fine adjustment assembly realizes the accurate and quick control to flow, and convenient operation, and when not needing to adjust flow, the driving end of coarse adjustment assembly and fine adjustment assembly can be locked and fixed through flow control limiting mechanism 3, so that flow keeps the current state.

[0034] Please refer to Figure 2 And Figure 3 Coarse adjustment assembly includes coarse adjustment hand wheel 21, outer sleeve 22 and coarse adjustment seat 23, outer sleeve 22 is rotatably connected with support 15 by bearing, and the outer wall of coarse adjustment seat 23 is limitingly and slidably connected with the inner wall of valve cover 14, so that coarse adjustment seat 23 can be limitingly and slidably moved vertically;Outer sleeve 22 upper end is fixedly connected with coarse adjustment hand wheel 21, outer sleeve 22 lower end extends into the inside of coarse adjustment seat 23, and thread connection is provided between outer sleeve 22 and coarse adjustment seat 23.

[0035] Fine adjustment assembly includes fine adjustment hand wheel 24, inner sleeve 25, fine adjustment rod 26 and connecting rod 27, inner sleeve 25 is rotatably installed in the inside of outer sleeve 22, inner sleeve 25 upper end is fixedly connected with fine adjustment hand wheel 24, fine adjustment rod 26 is arranged in the inside of coarse adjustment seat 23, and thread connection is provided between fine adjustment rod 26 and coarse adjustment seat 23;Fine adjustment rod 26 upper end is fixedly connected with connecting rod 27, connecting rod 27 is limitingly and slidably connected with inner sleeve 25, inner sleeve 25 is arranged as a regular polygon, so that inner sleeve 25 and fine adjustment rod 26 can be synchronously rotated and moved vertically relative;Fine adjustment rod 26 lower end is fixedly connected with valve core 13;

[0036] The pitch of the thread between fine adjustment rod 26 and coarse adjustment seat 23 is less than the pitch of the thread between outer sleeve 22 and coarse adjustment seat 23, so that when coarse adjustment hand wheel 21 and fine adjustment hand wheel 24 rotate the same number of turns, the vertical displacement of coarse adjustment seat 23 is greater than the vertical displacement of fine adjustment rod 26.

[0037] Please refer to Figure 2 And Figure 4 Flow control limiting mechanism 3 includes coarse adjustment limiting assembly and fine adjustment limiting assembly, coarse adjustment limiting assembly is arranged between support 15 and outer sleeve 22, and is used for locking and fixing the rotation of coarse adjustment hand wheel 21, and fine adjustment limiting assembly is arranged between coarse adjustment hand wheel 21 and inner sleeve 25, and is used for locking and fixing the rotation of inner sleeve 25.

[0038] The coarse adjustment limiting assembly comprises a connecting wheel 31, a clamping block 32, a fixed seat 33, a spring 34 and a pull plate 35. The connecting wheel 31 is fixedly connected with the outer sleeve 22, the fixed seat 33 is fixedly connected with the support 15, the clamping block 32 is limitingly and slidably connected with the fixed seat 33, the outer edge of the connecting wheel 31 is uniformly provided with a toothed structure, one end of the clamping block 32 close to the connecting wheel 31 is clamped with the toothed structure, and the other end of the clamping block 32 is fixedly connected with the pull plate 35 through the fixed seat 33. The outer side of the clamping block 32 is sleeved with the spring 34, and the two ends of the spring 34 are fixedly connected with the fixed seat 33 and the pull plate 35 respectively. In the natural state, the clamping block 32 is clamped with the toothed structure of the connecting wheel 31. By pulling the clamping block 32 through the pull plate 35 to control the clamping state of the clamping block 32 and the toothed structure of the connecting wheel 31, the rotation of the coarse adjustment hand wheel 21 can be limited, and the locking effect of the coarse adjustment assembly can be realized.

[0039] The fine adjustment limiting assembly also comprises a connecting wheel 31, a clamping block 32, a fixed seat 33, a spring 34 and a pull plate 35. The connecting wheel 31 is fixedly connected with the inner sleeve 25, the fixed seat 33 is fixedly connected with the upper end of the coarse adjustment hand wheel 21, the clamping block 32 is limitingly and slidably connected with the fixed seat 33, the outer edge of the connecting wheel 31 is uniformly provided with a toothed structure, one end of the clamping block 32 close to the connecting wheel 31 is clamped with the toothed structure, and the other end of the clamping block 32 is fixedly connected with the pull plate 35 through the fixed seat 33. The outer side of the clamping block 32 is sleeved with the spring 34, and the two ends of the spring 34 are fixedly connected with the fixed seat 33 and the pull plate 35 respectively. In the natural state, the clamping block 32 is clamped with the toothed structure of the connecting wheel 31. By pulling the clamping block 32 through the pull plate 35 to control the clamping state of the clamping block 32 and the toothed structure of the connecting wheel 31, the rotation of the fine adjustment hand wheel 24 can be limited, and the locking effect of the fine adjustment assembly can be realized.

[0040] The clamping block 32 and the fixed seat 33 of the coarse adjustment limiting assembly and the fine adjustment limiting assembly are provided with matched pin holes. When the pin holes of the clamping block 32 and the fixed seat 33 are inserted with the pin, the clamping block 32 is separated from the toothed structure of the connecting wheel 31.

[0041] When the flow needs to be adjusted, first, the coarse adjustment limiting assembly and the fine adjustment limiting assembly are controlled to respectively release the locking effect on the outer sleeve 22 and the inner sleeve 25, then the outer sleeve 22 is rotated by the coarse adjustment hand wheel 21 to control the vertical movement of the coarse adjustment seat 23, at this time, the coarse adjustment seat 23 drives the fine adjustment rod 26 to move vertically, the connecting rod 27 slides vertically in the inner sleeve 25, so that the vertical position of the valve core 13 is quickly adjusted, and after the quick adjustment, the coarse adjustment limiting assembly is controlled to fix the outer sleeve 22; then the inner sleeve 25 is rotated by the fine adjustment hand wheel 24, the inner sleeve 25 drives the fine adjustment rod 26 to rotate through the connecting rod 27, so that the fine adjustment rod 26 moves vertically relative to the coarse adjustment seat 23 while rotating, the vertical position of the valve core 13 is accurately adjusted, and after the accurate adjustment is completed, the fine adjustment limiting assembly is controlled to fix the inner sleeve 25, so as to avoid the movement of the valve core 13;

[0042] In the utility model, the vertical movement of the valve core 13 is controlled by the coarse adjustment hand wheel 21 and the fine adjustment hand wheel 24, the valve port 12 opening is adjusted to control the flow size, the two kinds of adjustment modes are matched to realize the quick control of the flow and the accurate control of the flow, and the coarse adjustment hand wheel 21 and the fine adjustment hand wheel 24 are all rotated in situ without vertical displacement, so that the connection of the two with the output end of the electric or pneumatic execution unit is facilitated, and the automatic control is facilitated.

[0043] The above embodiment is only used to illustrate the technical scheme of the utility model, rather than limit it; although the utility model is described in detail with reference to the foregoing embodiment, those skilled in the art should understand that the technical scheme recorded in the foregoing embodiment can be modified, or part of the technical features can be replaced equivalently; and the modification or replacement does not make the essence of the corresponding technical scheme deviate from the spirit and range of the technical scheme of the utility model.

Claims

1. A flow control valve with multiple adjustment modes, comprising a valve body (10), a valve seat (11), a valve port (12), a valve core (13) and a valve cover (14), characterized in that: the valve seat (11) is fixedly installed in the valve body (10), and a plurality of valve ports (12) are uniformly and equidistantly arranged in a circumferential array on the side of the valve seat (11); the valve core (13) is arranged on the inner side of the valve seat (11) and cooperates with the valve seat (11) to block the valve ports (12); a bracket (15) is fixedly installed on the upper end of the valve cover (14), and a double-mode flow control mechanism (2) with two modes of coarse adjustment and fine adjustment of flow is arranged on the bracket (15); the double-mode flow control mechanism (2) comprises a coarse adjustment assembly and a fine adjustment assembly, the coarse adjustment assembly is arranged on the bracket (15), the fine adjustment assembly is arranged on the inner side of the coarse adjustment assembly, and the output end of the fine adjustment assembly is fixedly connected with the valve core (13); a flow control limiting mechanism (3) is arranged at the driving end of the coarse adjustment assembly and the fine adjustment assembly and is used for locking and fixing the driving end of the coarse adjustment assembly and the fine adjustment assembly.

2. The flow control valve with multiple regulation modes according to claim 1, characterized in that, the coarse adjustment assembly comprises a coarse adjustment hand wheel (21), an outer sleeve (22) and a coarse adjustment seat (23), the outer sleeve (22) is rotatably connected with the bracket (15) through a bearing, and the outer wall of the coarse adjustment seat (23) is limitingly and slidably connected with the inner wall of the valve cover (14); the upper end of the outer sleeve (22) is fixedly connected with the coarse adjustment hand wheel (21), and the lower end of the outer sleeve (22) extends into the inner side of the coarse adjustment seat (23), and a thread is arranged between the outer sleeve (22) and the coarse adjustment seat (23) to enable the two to be threadedly connected.

3. The flow control valve with multiple regulation modes according to claim 2, characterized in that, the fine adjustment assembly comprises a fine adjustment hand wheel (24), an inner sleeve (25), a fine adjustment rod (26) and a connecting rod (27), the inner sleeve (25) is rotatably installed on the inner side of the outer sleeve (22) through a bearing, the upper end of the inner sleeve (25) is fixedly connected with the fine adjustment hand wheel (24), the fine adjustment rod (26) is arranged on the inner side of the coarse adjustment seat (23), and a thread is arranged between the fine adjustment rod (26) and the coarse adjustment seat (23) to enable the two to be threadedly connected; the upper end of the fine adjustment rod (26) is fixedly connected with the connecting rod (27), and the connecting rod (27) is limitingly and slidably connected with the inner sleeve (25).

4. The flow control valve with multiple regulation modes according to claim 3, characterized in that, the lower end of the fine adjustment rod (26) is fixedly connected with the valve core (13).

5. The flow control valve with multiple regulation modes according to claim 4, characterized in that, the pitch of the thread between the fine adjustment rod (26) and the coarse adjustment seat (23) is smaller than the pitch of the thread between the outer sleeve (22) and the coarse adjustment seat (23).

6. The flow control valve with multiple regulation modes according to claim 5, characterized in that, the flow control limiting mechanism (3) comprises a coarse adjustment limiting assembly and a fine adjustment limiting assembly, the coarse adjustment limiting assembly is arranged between the bracket (15) and the outer sleeve (22) and is used for locking and fixing the rotation of the coarse adjustment hand wheel (21), and the fine adjustment limiting assembly is arranged between the coarse adjustment hand wheel (21) and the inner sleeve (25) and is used for locking and fixing the rotation of the inner sleeve (25).

7. The flow control valve with multiple regulation modes according to claim 6, characterized in that, The coarse adjustment limiting component comprises a connecting wheel (31), a clamping block (32), a fixing seat (33), a spring (34) and a pull plate (35), the connecting wheel (31) is fixedly connected with the outer sleeve (22), the fixing seat (33) is fixedly connected with the support (15), the clamping block (32) is limitingly and slidably connected with the fixing seat (33), the outer edge of the connecting wheel (31) is uniformly provided with a toothed structure, one end of the clamping block (32) close to the connecting wheel (31) is clamped with the toothed structure, the other end of the clamping block (32) passes through the fixing seat (33) and is fixedly connected with the pull plate (35); the outer side of the clamping block (32) is sleeved with the spring (34), and the two ends of the spring (34) are fixedly connected with the fixing seat (33) and the pull plate (35) respectively.

8. The flow control valve with multiple regulation modes according to claim 7, characterized in that, The fine adjustment limiting component also comprises a connecting wheel (31), a clamping block (32), a fixing seat (33), a spring (34) and a pull plate (35), the connecting wheel (31) is fixedly connected with the inner sleeve (25), the fixing seat (33) is fixedly connected with the upper end of the coarse adjustment hand wheel (21), the clamping block (32) is limitingly and slidably connected with the fixing seat (33), the outer edge of the connecting wheel (31) is uniformly provided with a toothed structure, one end of the clamping block (32) close to the connecting wheel (31) is clamped with the toothed structure, the other end of the clamping block (32) passes through the fixing seat (33) and is fixedly connected with the pull plate (35); the outer side of the clamping block (32) is sleeved with the spring (34), and the two ends of the spring (34) are fixedly connected with the fixing seat (33) and the pull plate (35) respectively.

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