Adjustable enamel diaphragm valve

Abstract

The utility model relates to the technical field of diaphragm valves, in particular to an adjustable enamel diaphragm valve which comprises a valve body, a valve cover is fixedly installed at the top end of the valve body, and a blocking mechanism is arranged between the valve cover and the interior of the valve body. The support is arranged at the top end of the valve cover, a pneumatic actuator is arranged at the upper end of the support, and the pneumatic actuator is in transmission connection with the blocking mechanism. The support, the valve rod, the fixing piece, the pointer and the scale plate are used in cooperation, the pneumatic actuator is controlled to be started, the valve rod is driven to descend after the pneumatic actuator is started, the diaphragm body is controlled to extend downwards after the valve rod descends, a channel in the valve body is blocked, and when the valve rod descends, the valve rod drives the fixing piece to descend synchronously, so that the valve body is prevented from being damaged. When the fixing piece descends, the pointer on one side is controlled to descend synchronously, the scale plate is installed on one side of the support through the screw, the pointer is matched with the scale plate when moving, the adjustment position can be accurately known, and therefore the purpose of convenient adjustment is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm valves, in particular to an adjustable enamel diaphragm valve. Background Art

[0002] The structure of the diaphragm valve is very different from that of general valves. It is a new type of valve and a special form of cut-off valve. Its opening and closing parts are a diaphragm made of soft material, which separates the inner cavity of the valve body from the inner cavity of the valve cover and the driving components. It is now widely used in various fields.

[0003] At present, when adjusting the flow rate, the existing diaphragm valves on the market usually adjust the size of the valve opening flow rate by rotating the handwheel device of the manual diaphragm valve. The number of rotations is related to the size of the valve opening flow rate. However, precise control cannot be achieved when rotating the handwheel. Utility Model Content

[0004] The purpose of the utility model is to provide an adjustable enamel diaphragm valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable enameled diaphragm valve, comprising a valve body, a valve cover is fixedly installed on the top of the valve body, and a blocking mechanism is arranged between the valve cover and the inside of the valve body; a bracket, the bracket is arranged at the top of the valve cover, a pneumatic actuator is arranged on the upper end of the bracket, and the pneumatic actuator is transmission-connected to the blocking mechanism; a positioning mechanism is arranged between the bracket and the pneumatic actuator.

[0006] Preferably, the blocking mechanism comprises a diaphragm body, the diaphragm body is arranged between the valve body and the inside of the valve cover, the inside of the valve cover is provided with a valve plate, and the valve plate is arranged at the upper end of the diaphragm body.

[0007] Preferably, a corrosion-resistant layer is further provided on the inner wall of the valve body, and the corrosion-resistant layer is made of enamel material.

[0008] Preferably, a valve stem is provided at the output shaft end of the pneumatic actuator, and the bottom end of the valve stem is fixedly connected to the top end of the valve plate.

[0009] Preferably, the positioning mechanism includes a fixing member, which is fixedly sleeved on the outer upper end of the valve stem, a pointer is provided on the left side of the fixing member, a scale plate is provided on the side of the bracket close to the pointer, and a mounting groove is vertically opened on the side of the scale plate away from the pointer, and the bracket and the mounting groove are fixedly connected by screws.

[0010] Preferably, a compression sleeve is fixedly mounted on the middle part of the top end of the valve cover by bolts, and packing is arranged outside the valve cover and the compression sleeve on the valve stem.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the adjustable enamel diaphragm valve controls the start of the pneumatic actuator through the cooperation between the bracket, valve stem, fixing part, pointer and scale plate. After the pneumatic actuator is started, it drives the valve stem to descend. After the valve stem descends, it controls the diaphragm body to extend downward, blocking the passage inside the valve body. When the valve stem descends, the valve stem drives the fixing part to descend synchronously. When the fixing part descends, the pointer on one side is controlled to descend synchronously. A scale plate is installed on one side of the bracket by screws. When the pointer moves, it cooperates with the scale plate to accurately understand the adjustment position, thereby achieving the purpose of easy adjustment.

[0012] The adjustable enamel diaphragm valve is used in conjunction with the valve body and the corrosion-resistant layer. A corrosion-resistant layer is enameled at the flow-through part inside the valve body. The corrosion-resistant layer is made of enamel material. The enamel coating is very strong and can effectively resist chemical corrosion and physical wear, making the coated objects more durable. The enamel surface is not easy to breed bacteria, thereby achieving the purpose of antibacterial and corrosion resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall main structure of the utility model.

[0014] Figure 2 For the utility model Figure 1 Enlarged schematic diagram at point A in the middle.

[0015] Figure 3 For the utility model Figure 1 Enlarged schematic diagram of point B in the middle.

[0016] In the figure: 1. valve body; 2. valve cover; 3. bracket; 4. pneumatic actuator; 5. diaphragm body; 6. valve plate; 7. corrosion-resistant layer; 8. valve stem; 9. fixing part; 10. pointer; 11. scale plate; 12. mounting groove; 13. screw; 14. bolt; 15. pressing sleeve; 16. packing. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1-3As shown, the utility model provides a technical solution: an adjustable enamel diaphragm valve, including a valve body 1, a valve cover 2 is fixedly installed on the top of the valve body 1, a blocking mechanism is arranged between the valve cover 2 and the inside of the valve body 1, the blocking mechanism includes a diaphragm body 5, the diaphragm body 5 is arranged between the valve body 1 and the inside of the valve cover 2, a valve plate 6 is arranged inside the valve cover 2, and the valve plate 6 is arranged at the upper end of the diaphragm body 5; a bracket 3, the bracket 3 is arranged at the top of the valve cover 2, a pneumatic actuator 4 is arranged on the upper end of the bracket 3, the pneumatic actuator 4 is transmission-connected to the blocking mechanism, and a valve stem 8 is arranged at the output shaft end of the pneumatic actuator 4. The bottom end of the valve stem 8 is fixedly connected to the top end of the valve plate 6, and a compression sleeve 15 is fixedly installed in the middle of the top end of the valve cover 2 by bolts 14. A packing 16 is arranged on the outside of the valve stem 8 between the valve cover 2 and the compression sleeve 15. A positioning mechanism is arranged between the bracket 3 and the pneumatic actuator 4. The positioning mechanism includes a fixing part 9, and the fixing part 9 is fixedly sleeved on the outside of the upper end of the valve stem 8. A pointer 10 is arranged on the left side of the fixing part 9. A scale plate 11 is arranged on the side of the bracket 3 close to the pointer 10, and a mounting groove 12 is vertically opened on the side of the scale plate 11 away from the pointer 10. The bracket 3 and the mounting groove 12 are fixedly connected by screws 13.

[0019] In this embodiment, when in use, the pneumatic actuator 4 is controlled to start. After the pneumatic actuator 4 is started, the valve stem 8 is driven to descend. After the valve stem 8 descends, the diaphragm body 5 is controlled to extend downward to block the passage inside the valve body 1. When the valve stem 8 descends, the valve stem 8 drives the fixing part 9 to descend synchronously. When the fixing part 9 descends, the pointer 10 on one side is controlled to descend synchronously. A scale plate 11 is installed on one side of the bracket 3 through a screw 13. When the pointer 10 moves, it cooperates with the scale plate 11 to accurately understand the adjustment position, thereby achieving the purpose of easy adjustment.

[0020] like Figure 3 As shown, a corrosion-resistant layer 7 is further provided on the inner wall of the valve body 1, and the corrosion-resistant layer 7 is made of enamel material.

[0021] In this embodiment, a corrosion-resistant layer 7 is enameled at the flow-through part inside the valve body 1 of the device. The corrosion-resistant layer 7 is made of enamel material. The enamel coating is very strong and can effectively resist chemical corrosion and physical wear, making the coated objects more durable. The enamel surface is not easy to breed bacteria, thereby achieving the purpose of antibacterial and corrosion resistance.

[0022] Working principle: When the device is in use, the pneumatic actuator 4 is controlled to start. After the pneumatic actuator 4 is started, the valve stem 8 is driven to descend. After the valve stem 8 descends, the diaphragm body 5 is controlled to extend downward to block the passage inside the valve body 1. When the valve stem 8 descends, the valve stem 8 drives the fixing part 9 to descend synchronously. When the fixing part 9 descends, the pointer 10 on one side is controlled to descend synchronously. A scale plate 11 is installed on one side of the bracket 3 through a screw 13. When the pointer 10 moves, it cooperates with the scale plate 11 to accurately understand the adjustment position; and the device enameles a corrosion-resistant layer 7 at the flow-through part inside the valve body 1. The corrosion-resistant layer 7 is made of enamel material. The enamel coating is very strong and can effectively resist chemical corrosion and physical wear, making the coated objects more durable and the enamel surface less likely to breed bacteria.

[0023] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. Adjustable enamel diaphragm valve, characterized by: include A valve body (1), a valve cover (2) being fixedly mounted on the top end of the valve body (1), and a blocking mechanism being arranged between the valve cover (2) and the interior of the valve body (1); A bracket (3), the bracket (3) being arranged at the top end of the valve cover (2), a pneumatic actuator (4) being arranged at the upper end of the bracket (3), and the pneumatic actuator (4) being in driving connection with the blocking mechanism; The inner wall of the valve body (1) is further provided with a corrosion-resistant layer (7), and the corrosion-resistant layer (7) is made of enamel material; A positioning mechanism is provided between the bracket (3) and the pneumatic actuator (4), the positioning mechanism comprising a fixing member (9), the fixing member (9) being fixedly sleeved on the outer upper end of the valve stem (8), a pointer (10) being provided on the left side of the fixing member (9), a scale plate (11) being provided on the side of the bracket (3) close to the pointer (10), a mounting groove (12) being vertically provided on the side of the scale plate (11) away from the pointer (10), and the bracket (3) and the mounting groove (12) being fixedly connected by screws (13).

2. The adjustable enamel diaphragm valve according to claim 1 is characterized in that: The blocking mechanism comprises a diaphragm body (5), wherein the diaphragm body (5) is arranged between the valve body (1) and the inside of the valve cover (2), and a valve plate (6) is arranged inside the valve cover (2), and the valve plate (6) is arranged at the upper end of the diaphragm body (5).

3. The adjustable enamel diaphragm valve according to claim 1 is characterized in that: The output shaft end of the pneumatic actuator (4) is provided with a valve stem (8), and the bottom end of the valve stem (8) is fixedly connected to the top end of the valve plate (6).

4. The adjustable enamel diaphragm valve according to claim 1 is characterized in that: A press sleeve (15) is fixedly mounted on the middle part of the top end of the valve cover (2) by means of bolts (14); and a packing (16) is arranged outside the valve stem (8) between the valve cover (2) and the press sleeve (15).

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