Precise control iodine vapor piezoelectric ceramic valve

Abstract

The utility model provides a precise control iodine vapor piezoelectric ceramic valve which comprises an air pressure electric ceramic valve, the air pressure electric ceramic valve comprises a valve seat, a valve sleeve is sleeved in the valve seat in a matched mode, a first piezoelectric ceramic is arranged in the valve sleeve, and a valve rod is connected in the first piezoelectric ceramic in a matched and sliding mode. The first piezoelectric ceramic deforms when the first piezoelectric ceramic is electrified, so that the valve rod tends to be pulled outwards, the top end of the valve rod breaks away from blocking of a channel opening of the air guide channel, air channel circulation is achieved, and meanwhile the temperature of the air channel can be effectively controlled through work adjustment of the semiconductor chilling plate and a cold semiconductor tube in the temperature control insertion hole. And the working temperature of the first piezoelectric ceramic is kept stable, so that the stability of the deformation quantity and the reaction accuracy of the first piezoelectric ceramic are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to piezoelectric ceramic valve technical field especially relates to a kind of precision control iodine vapor piezoelectric ceramic valve. BACKGROUND

[0002] Iodine vapor piezoelectric ceramic valve utilizes the inverse piezoelectric effect of piezoelectric ceramic, and the opening and closing of valve are controlled by applying voltage.When a certain voltage is applied, piezoelectric ceramic material will produce deformation, thereby pushing the valve core of valve to move, change the opening size of valve, and further control the flow of iodine vapor.Piezoelectric ceramic has the advantages of fast response speed, high control precision, etc., so that iodine vapor piezoelectric ceramic valve can realize fast and accurate flow control.However, piezoelectric ceramic material is affected by external working temperature environment, which affects the energized deformation of piezoelectric ceramic, thereby causing inaccurate flow control or leakage. SUMMARY

[0003] In order to solve the above problems, the utility model provides a kind of precision control iodine vapor piezoelectric ceramic valve, to more exactly solve the above-mentioned problems.

[0004] The utility model is realized by the following technical scheme:

[0005] The utility model provides a kind of precision control iodine vapor piezoelectric ceramic valve, including gas pressure piezoelectric ceramic valve, the gas pressure piezoelectric ceramic valve includes valve seat, and the inside of valve seat is equipped with valve sleeve, and the inside of valve sleeve is equipped with first piezoelectric ceramic, and the first piezoelectric ceramic is equipped with valve stem in cooperation with sliding connection, the inside of valve seat and the position of the top head end of valve stem are equipped with air inlet chamber, and valve stem and the valve stem diaphragm in air inlet chamber are equipped, and the valve stem diaphragm is sealed and clamped between valve seat and valve sleeve, one side of valve seat is equipped with air inlet channel that is connected with air inlet chamber, the inside of valve seat is equipped with gas guide channel that is connected with air inlet chamber, and one side of valve seat is equipped with exhaust channel that is connected with gas guide channel, the outer end of valve stem is screw head end, and the screw head end of outer end of valve stem is connected with nut, and gasket is arranged between the outer end of first piezoelectric ceramic and nut.

[0006] Further, the gas guide channel penetrates the outside of valve seat in the direction consistent with the sliding direction of valve stem, and the outer end of gas guide channel is equipped with plug.

[0007] Further, the valve sleeve and the outside of the position of first piezoelectric ceramic are equipped with refrigeration fin groove, and semiconductor refrigeration fin is matched in refrigeration fin groove.

[0008] Further, the outside of valve seat is equipped with temperature insulation sleeve, and temperature control insertion hole for inserting refrigeration semiconductor tube is arranged in the inside of valve stem.

[0009] Further, the valve seat is internally provided with a movable block matched with the top head end of the valve rod, the movable block is slidably connected in the valve seat, and the second piezoelectric ceramic is arranged on the side of the movable block away from the valve rod and connected with the movable block.

[0010] Further, the sliding direction of the movable block is consistent with the sliding direction of the valve rod, the movable block is externally provided with a piston ring, and the piston ring is slidably connected with the inner wall of the sliding cavity.

[0011] The utility model discloses beneficial effect has:

[0012] 1, the utility model discloses the deformation under the first piezoelectric ceramic electrification, thereby has the tendency of the valve rod to the outside, thereby makes the top head end of the valve rod to separate the block of the air passage channel mouth, realizes the gas circuit flow, passes through the working adjustment under the inside cold semiconductor tube of semiconductor refrigerating sheet and temperature control jack, makes the working temperature of the first piezoelectric ceramic keep stable, thereby guarantees the stability of the deformation of the first piezoelectric ceramic and reaction accuracy,

[0013] 2, the utility model discloses when the gas circuit of the piezoelectric ceramic valve needs to be closed in the emergency, through the deformation of the second piezoelectric ceramic electrification, makes the movable block slide to the direction close to the valve rod, combines the deformation of the first piezoelectric ceramic and pulls the movement of the valve rod, thereby reaches the quick closure of the air passage. ACCURACY

[0014] Figure 1 It is the structure sectional view of the utility model;

[0015] Figure 2 It is Figure 1 The enlarged view of A in the middle.

[0016] In the drawing: 1, piezoelectric ceramic valve; 101, valve seat; 1011, air inlet chamber; 1012, air guide; 1013, air inlet; 1014, air outlet; 1015, plug; 102, valve sleeve; 103, valve rod; 1031, valve rod diaphragm; 1032, temperature control jack; 104, gasket; 105, nut; 106, first piezoelectric ceramic; 107, semiconductor refrigerating sheet; 1071, temperature isolation sleeve; 108, movable block; 1081, piston ring; 109, second piezoelectric ceramic. DETAILED DESCRIPTION

[0017] 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. Apparently, 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 protection scope of the utility model.

[0018] Embodiment 1

[0019] A precision control iodine vapor piezoelectric ceramic valve, comprising a piezoelectric ceramic valve 1, the piezoelectric ceramic valve 1 comprises a valve seat 101, the inside of the valve seat 101 is matched with a valve sleeve 102, the inside of the valve sleeve 102 is provided with a first piezoelectric ceramic 106, and the first piezoelectric ceramic 106 is matched with a valve rod 103 in sliding connection, the inside of the valve seat 101 and the position of the top head end of the valve rod 103 are provided with an air inlet chamber 1011, the valve rod 103 and the position of the air inlet chamber 1011 are provided with a valve rod diaphragm 1031, the valve rod diaphragm 1031 is sealed and clamped between the valve seat 101 and the valve sleeve 102, one side of the valve seat 101 is provided with an air inlet channel 1013 which is in communication with the air inlet chamber 1011, the inside of the valve seat 101 is provided with a gas guide channel 1012 which is in communication with the air inlet chamber 1011, one side of the valve seat 101 is provided with an exhaust channel 1014 which is in communication with the gas guide channel 1012, the gas guide channel 1012 penetrates out of the outside of the valve seat 101 in the same direction as the sliding direction of the valve rod 103, and the outer end of the gas guide channel 1012 is provided with a plug 1015, the outer end of the valve rod 103 is a threaded head end, and the threaded head end of the outer end of the valve rod 103 is connected with a nut 105, and the nut 105 and the outer end of the first piezoelectric ceramic 106 are matched with a gasket 104. When the piezoelectric ceramic valve 1 works, the first piezoelectric ceramic 106 deforms under the action of electricity, so as to have a tendency to pull the valve rod 103 outward, so that the top head end of the valve rod 103 is separated from the blockage of the channel port of the gas guide channel 1012, the gas circuit is realized, the flow control has the advantages of fast response speed, high control precision, etc., and fast and accurate flow control is realized.

[0020] The valve sleeve 102 and the outside of the position of the first piezoelectric ceramic 106 are provided with a refrigeration fin groove, and the refrigeration fin groove is matched with a semiconductor refrigeration fin 107, the inside of the valve rod 103 is provided with a temperature control insertion hole 1032 for inserting a refrigeration semiconductor tube, and through the work adjustment of the semiconductor refrigeration fin 107 and the cold semiconductor tube in the temperature control insertion hole 1032, the working temperature of the first piezoelectric ceramic 106 is kept stable, so as to ensure the stability of the deformation amount and the reaction accuracy of the first piezoelectric ceramic 106, and the outside of the valve seat 101 is provided with a temperature isolation sleeve 1071, so as to reduce the influence of the external environment on the first piezoelectric ceramic 106.

[0021] The technical scheme in the embodiment of the application has at least the following technical effects or advantages: the first piezoelectric ceramic 106 deforms under power-on, thereby having a tendency to pull the valve rod 103 outward, so that the top end of the valve rod 103 is separated from the blockage of the passage of the air guide 1012, air passage is realized, and meanwhile, the working temperature of the first piezoelectric ceramic 106 is kept stable through the working adjustment of the semiconductor refrigerating sheet 107 and the cold semiconductor tube inside the temperature control jack 1032, so that the stability of the deformation amount of the first piezoelectric ceramic 106 and the reaction accuracy are ensured.

[0022] Embodiment 2

[0023] The valve seat 101 is internally provided with a movable block 108 matched with the top end of the valve rod 103, the movable block 108 is slidably connected in the valve seat 101, and the side, away from the valve rod 103, of the movable block 108 is provided with a second piezoelectric ceramic 109 connected with the movable block 108. When it is necessary to close the air passage of the piezoelectric ceramic valve 1 in an emergency, the second piezoelectric ceramic 109 is powered to deform, so that the movable block 108 slides towards the valve rod 103, and the movement of the valve rod 103 is pulled by the deformation of the first piezoelectric ceramic 106, so that the air passage is quickly closed.

[0024] The sliding direction of the movable block 108 is consistent with the sliding direction of the valve rod 103, the movable block 108 is externally provided with a piston ring 1081 slidably connected with the inner wall of the sliding cavity where the movable block 108 is located, so as to ensure the sealing performance of the sliding gap where the movable block 108 is located.

[0025] The technical scheme in the embodiment of the application has at least the following technical effects or advantages: when it is necessary to close the air passage of the piezoelectric ceramic valve 1 in an emergency, the second piezoelectric ceramic 109 is powered to deform, so that the movable block 108 slides towards the valve rod 103, and the movement of the valve rod 103 is pulled by the deformation of the first piezoelectric ceramic 106, so that the air passage is quickly closed.

[0026] Of course, the utility model also can have other various implementation manners, and based on the present embodiment, other implementation manners obtained by the person skilled in the art without any creative labor all belong to the range protected by the utility model.

Claims

1. A precision controlled iodine vapor piezoelectric ceramic valve comprising a piezoelectric ceramic valve (1), characterized in that, The air pressure piezoelectric ceramic valve (1) comprises a valve seat (101), the inside of the valve seat (101) is sleeved with a valve sleeve (102), the inside of the valve sleeve (102) is provided with a first piezoelectric ceramic (106), and the first piezoelectric ceramic (106) is slidably connected with a valve rod (103), the inside of the valve seat (101) and the top end of the valve rod (103) are provided with an air inlet chamber (1011), the valve rod (103) and the air inlet chamber (1011) are provided with a valve rod diaphragm (1031), the valve rod diaphragm (1031) is sealed and clamped between the valve seat (101) and the valve sleeve (102), one side of the valve seat (101) is provided with an air inlet channel (1013) connected with the air inlet chamber (1011), the inside of the valve seat (101) is provided with a gas guide channel (1012) connected with the air inlet chamber (1011), one side of the valve seat (101) is provided with an air outlet channel (1014) connected with the gas guide channel (1012), the outer end of the valve rod (103) is a threaded head end, and the threaded head end of the outer end of the valve rod (103) is connected with a nut (105), and the nut (105) and the outer end of the first piezoelectric ceramic (106) are provided with a gasket (104).

2. The precision controlled iodine vapor piezoelectric ceramic valve according to claim 1, wherein, The gas guide channel (1012) penetrates the outside of the valve seat (101) in the same direction as the sliding direction of the valve rod (103), and the outer end of the gas guide channel (1012) is provided with a plug (1015).

3. The precision controlled iodine vapor piezoelectric ceramic valve according to claim 1, wherein, The valve sleeve (102) is provided with a refrigeration fin groove outside the position of the first piezoelectric ceramic (106), and the refrigeration fin groove is provided with a semiconductor refrigeration fin (107).

4. The precision controlled iodine vapor piezoelectric ceramic valve according to claim 1, wherein, The outside of the valve seat (101) is provided with a temperature isolation sleeve (1071), and the inside of the valve rod (103) is provided with a temperature control insertion hole (1032) for inserting a refrigeration semiconductor tube.

5. The precision controlled iodine vapor piezoelectric ceramic valve according to claim 1, wherein, The inside of the valve seat (101) is provided with a movable block (108) matched with the top end of the valve rod (103), the movable block (108) is slidably connected in the valve seat (101), one side of the movable block (108) away from the valve rod (103) is provided with a second piezoelectric ceramic (109), and the second piezoelectric ceramic (109) is connected with the movable block (108).

6. A precision controlled iodine vapor piezoelectric ceramic valve according to claim 5, wherein, The sliding direction of the movable block (108) is consistent with the sliding direction of the valve rod (103), the outside of the movable block (108) is provided with a piston ring (1081), and the piston ring (1081) is slidably connected with the inner wall of the sliding cavity of the movable block (108).

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