CN217153085U

CN217153085U - High-stability fluid control diaphragm valve

Info

Publication number: CN217153085U
Application number: CN202220317330.3U
Authority: CN
Inventors: 余凯迪; 陈建飞; 陈攀; 葛之谦
Original assignee: Zhejiang Amy Fluid Technology Co ltd
Current assignee: Zhejiang Amy Fluid Technology Co ltd
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2022-08-09
Anticipated expiration: 2032-02-16

Abstract

The utility model provides a high stable fluid control diaphragm valve, which belongs to the technical field of diaphragm valves and comprises a valve body, a valve rod, a diaphragm and a bracket, wherein a cylinder component is arranged on the bracket, an indicating rod is arranged on the cylinder component, a transparent shell is arranged outside the indicating rod, and a scale is arranged on the transparent shell; the valve rod is internally provided with a rack inside the bracket, the inner wall of the bracket is provided with a gear, a gear fixing frame is arranged between the gear and the bracket, and the bracket is provided with a locking device which comprises an adjusting screw rod, a screw rod fixing block, a gear clamping ring and a sealing cover; the utility model is provided with the scale on the transparent shell outside the indicating rod, and the scale is arranged according to the flow between the diaphragm and the valve body, thereby controlling the flow; meanwhile, the gear and rack transmission is arranged between the valve rod and the support to improve the moving stability of the valve rod, and the locking device is arranged to lock the valve rod through the locking device after the flow is adjusted, so that the valve rod is prevented from moving, and the flow can be stably controlled.

Description

High-stability fluid control diaphragm valve

Technical Field

The utility model relates to a diaphragm valve technical field, in particular to high stable fluid control diaphragm valve.

Background

The diaphragm valve is a stop valve which uses a diaphragm as an opening and closing part to close a flow passage, cut off fluid and separate an inner cavity of the valve body from an inner cavity of the valve cover; the diaphragm is made of elastic, corrosion-resistant and non-permeable materials such as rubber, plastic and the like; the valve body is made of multipurpose plastic, glass fiber reinforced plastic, ceramic or metal lining rubber material; the structure is simple, the sealing and corrosion resistance performance is good, and the fluid resistance is small; the medium is used for low pressure, low temperature, high corrosivity and suspended matter-containing medium; the structure is divided into a ridge type, a stop type, a gate plate type and the like; the driving modes are manual, pneumatic and electric.

The sealing principle of the diaphragm valve is that the diaphragm or the diaphragm assembly is pressed down by the downward movement of the operating mechanism to be tightly fit with the channel of the weir-type lining valve body or the straight-through type lining valve body, so that the sealing is realized; the magnitude of the specific sealing pressure is realized by the magnitude of the downward pressure of the closing member.

The existing pneumatic diaphragm valve can not control the fluid flow generally in the sealing process that the valve rod pushes the diaphragm to abut against the valve body, and the valve rod has poor stability in the moving process and can influence the sealing performance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the shortcoming and not enough that prior art exists, and provide a high stable fluid control diaphragm valve.

The utility model discloses the technical scheme who takes as follows: a high-stability fluid control diaphragm valve comprises a valve body, a valve rod, a diaphragm and a support, wherein a cylinder assembly is arranged on the support, an indicating rod is arranged on the cylinder assembly, a transparent shell is arranged outside the indicating rod, and a scale is arranged on the transparent shell;

the valve rod is located the support internal part is equipped with the rack, the support inner wall be equipped with rack complex gear, the gear with be equipped with the gear mount between the support, it is right to be equipped with on the support the locking device that the gear goes on locking, locking device includes adjusting screw, screw rod fixed block, gear snap ring and sealed cowling, the screw rod fixed block set up in the support outer wall, adjusting screw with the gear snap ring is connected, the screw rod fixed block is used for making adjusting screw is fixed and can rotate the messenger the gear snap ring orientation the gear direction removes and forms the locking.

The rack is symmetrically arranged on the valve rod by taking the valve rod as a center, and the gear is matched with the rack to enable the valve rod to stably move.

The sealing cover is arranged on the outer wall of the support and used for sealing the locking device.

The air cylinder assembly is used for pushing the valve rod to enable the diaphragm to abut against the valve body to form sealing, and comprises a piston, an air cylinder upper cover, an air cylinder lower cover, a spring and an air faucet.

The piston is arranged in the first inner cavity, one end of the spring is abutted to the piston, and the other end of the spring is abutted to the upper cover of the cylinder.

The piston circumference lateral wall is equipped with the seal groove, be equipped with the sealing ring in the seal groove.

The valve body comprises two medium inlets and outlets, the peripheral wall of each medium inlet and outlet is provided with a thread section, and the thread sections are provided with connecting sleeves used for being connected with pipelines.

And one end of the valve rod is provided with a valve clack, and the valve clack is connected with the diaphragm.

The diaphragm is compressed between the bracket and the valve body.

The utility model has the advantages as follows: the utility model is provided with the scale on the transparent shell outside the indicating rod, and the scale is arranged according to the flow between the diaphragm and the valve body, so the flow between the diaphragm and the valve body can be controlled; meanwhile, the gear rack transmission is arranged between the valve rod and the support to improve the stability of the valve rod in the process of pushing the membrane by the valve rod, the locking device is arranged, the valve rod is locked by the locking device after the flow is adjusted, the valve rod is prevented from moving, and the flow can be stably controlled.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings obtained from these drawings still belong to the scope of the present invention without inventive laboriousness.

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is a schematic view of the locking device of the present invention;

in the figure, 1-a valve body, 2-a bracket, 3-a cylinder component, 31-a cylinder upper cover, 32-a spring, 33-a piston, 331-a first inner cavity, 332-a second inner cavity, 34-a cylinder lower cover, 35-a sealing groove, 36-a sealing ring, 4-an indicating rod, 5-a transparent shell, 6-a scale, 7-a gear, 8-a locking device, 81-a screw rod fixing piece, 82-a gear clamping ring, 83-an adjusting screw rod, 84-a sealing cover, 9-a rack, 10-a diaphragm, 11-a thread section, 12-a connecting sleeve, 13-a valve clack and 14-a valve rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are only used for convenience of expression and should not be understood as limitations to the embodiments of the present invention, and the following embodiments do not describe any more.

The terms of direction and position in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the invention.

As shown in fig. 1 to fig. 3, for the present invention, an embodiment is provided:

a high-stability fluid control diaphragm valve comprises a valve body 1, a valve rod 14, a diaphragm 10 and a support 2, wherein a cylinder assembly 3 is arranged on the support 2, an indicating rod 4 is arranged on the cylinder assembly 3, a transparent shell 5 is arranged outside the indicating rod 4, and a scale 6 is arranged on the transparent shell; the transparent shell 5 outside the indicating rod 4 is provided with the scale 6, the scale 6 is arranged according to the flow between the membrane 10 and the valve body 1, so the flow between the membrane 10 and the valve body 1 can be controlled, and particularly, the moving distance of the valve rod 14 can be controlled by observing the position of the indicating rod 4 relative to the scale 6 through the transparent shell 5 and controlling the amount of the introduced gas.

The valve rod 14 is positioned inside the support 2 and is respectively provided with a rack 9, the inner wall of the support 2 is provided with a gear 7 matched with the rack 9, a gear fixing frame 71 is arranged between the gear 7 and the support 2, the support 2 is provided with a locking device 8 for locking the gear 7, the locking device 8 comprises an adjusting screw 83, a screw fixing block 81, a gear snap ring 82 and a sealing cover 84, the screw fixing block 81 is arranged on the outer wall of the support 2, the adjusting screw 83 is connected with the gear snap ring 82, and the screw fixing block 81 is used for fixing the adjusting screw 83 and can rotate to enable the gear snap ring 82 to move towards the gear 7 to form locking; a gear and rack transmission structure is arranged between the valve rod 14 and the support 2 to improve the stability of the valve rod 14 in the process that the valve rod 14 pushes the diaphragm 10, and a locking device 8 is arranged, so that the valve rod 14 is locked by the locking device 8 after the flow is adjusted, the movement of the valve rod is prevented, and the flow can be stably controlled.

The rack 9 is symmetrically arranged on the valve rod 14 by taking the valve rod 14 as a center, the gear 7 is matched with the rack 9 to enable the valve rod 14 to stably move, and at least two sides are symmetrically arranged to further improve the stability of the valve rod 14 in the moving process.

The sealing cover 84 is arranged on the outer wall of the support 2 and used for sealing the locking device 8, the sealing cover 84 can be specially set to be of a structure capable of guaranteeing sealing when the adjusting screw 83 rotates, specifically, the sealing cover 84 is divided into a first cover body and a second cover body, the first cover body is connected with the support 2 to cover the exposed locking device 8, the second cover body is arranged on the adjusting screw 83, the first cover body and the second cover body are in rotatable fit, namely, a through hole is formed in the first cover body, one end of the second cover body is connected with the adjusting screw 83, and the other end of the second cover body is embedded into the through hole to form rotatable fit.

The cylinder assembly 3 is used for pushing the valve rod 14 to push the diaphragm 10 to the valve body 1 to form a seal, the cylinder assembly 3 comprises a piston 33, an upper cylinder cover 31, a lower cylinder cover 34, a spring 32 and an air tap, in a normal state, under the action of the spring 32, the diaphragm 10 and the valve body 1 form a seal, gas is introduced into the second inner cavity 332 through the air tap, the pressure in the second inner cavity 332 is increased, the piston 33 drives the valve rod 14 to move upwards, and therefore the diaphragm 10 is separated from the valve body 1; in addition, the cylinder assembly 3 may be selected as is well known to those skilled in the art.

In this embodiment, the cylinder top cover 31 and the cylinder bottom cover 34 form a sealed inner cavity, the piston divides the inner cavity into a first inner cavity 331 and a second inner cavity 332, the spring 32 is disposed in the first inner cavity 331, and one end of the spring abuts against the piston 33, and the other end of the spring abuts against the cylinder top cover 31; the circumferential side wall of the piston 33 is provided with a sealing groove 35, and a sealing ring 36 is arranged in the sealing groove 35 to improve the sealing performance of each cavity of the cylinder.

The valve body includes two medium access & exit, the periphery wall of medium access & exit is equipped with screw thread section 11, screw thread section 11 department is equipped with the adapter sleeve 12 that is used for with the pipe connection, connects convenient and fast.

Valve rod 14 one end is equipped with valve clack 13, valve clack 13 with diaphragm 10 is connected, valve clack 13 can adopt double-screw bolt and screw hole to be connected with diaphragm 10, convenient to detach changes.

The diaphragm 10 is pressed between the support 2 and the valve body 1, and the diaphragm 10 is made of an elastic material and has sealing and buffering functions.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.

Claims

1. A high-stability fluid control diaphragm valve comprises a valve body (1), a valve rod (14), a diaphragm (10) and a support (2), wherein a cylinder assembly (3) is arranged on the support (2), and is characterized in that an indication rod (4) is arranged on the cylinder assembly (3), a transparent shell (5) is arranged outside the indication rod (4), and a scale (6) is arranged on the transparent shell;

the valve rod (14) is positioned inside the bracket (2) and is provided with a rack (9), a gear (7) matched with the rack (9) is arranged on the inner wall of the bracket (2), a gear fixing frame (71) is arranged between the gear (7) and the bracket (2), a locking device (8) for locking the gear (7) is arranged on the bracket (2), the locking device (8) comprises an adjusting screw rod (83), a screw rod fixing block (81), a gear snap ring (82) and a sealing cover (84), the screw fixing block (81) is arranged on the outer wall of the bracket (2), the adjusting screw (83) is connected with the gear snap ring (82), the screw fixing block (81) is used for fixing the adjusting screw (83) and enabling the adjusting screw to rotate so that the gear clamping ring (82) moves towards the direction of the gear (7) to form locking.

2. A highly stable fluid controlled diaphragm valve according to claim 1 wherein said rack (9) is arranged symmetrically on the valve stem (14) centered on said valve stem (14), said gear (7) cooperating with said rack (9) for stable movement of said valve stem (14).

3. A highly stable fluid control diaphragm valve according to claim 1 wherein said sealing cover (84) is provided on the outer wall of said support (2) for sealing said locking means (8).

4. A highly stable fluid control diaphragm valve according to claim 1 wherein the cylinder assembly (3) is used to push the valve stem (14) to seal the diaphragm (10) against the valve body (1), the cylinder assembly (3) comprising a piston (33), a cylinder upper cover (31), a cylinder lower cover (34), a spring (32) and an air tap.

5. A highly stable fluid control diaphragm valve according to claim 4, wherein said cylinder upper cover (31) and cylinder lower cover (34) form a sealed inner chamber, said piston divides said inner chamber into a first inner chamber (331) and a second inner chamber (332), said spring (32) is disposed in said first inner chamber (331) with one end abutting said piston (33) and the other end abutting said cylinder upper cover (31).

6. A high stability fluid control diaphragm valve according to claim 5, wherein said piston (33) circumferential side wall is provided with a sealing groove (35), and a sealing ring (36) is provided in said sealing groove (35).

7. A diaphragm valve with high stability for fluid control according to claim 1, wherein said valve body comprises two medium inlets and outlets, the peripheral wall of said medium inlet and outlet is provided with a threaded section (11), and a connecting sleeve (12) for connecting with a pipeline is arranged at the threaded section (11).

8. A highly stable fluid control diaphragm valve according to claim 1 wherein said valve stem (14) is provided with a flap (13) at one end, said flap (13) being connected to said diaphragm (10).

9. A highly stable fluid control diaphragm valve according to claim 1 wherein the diaphragm (10) is compressed between the support (2) and the valve body (1).