Proportional valve shaft core locking structure

Abstract

The utility model discloses a proportional valve shaft core locking structure, which comprises a valve body and an electromagnetic driving mechanism arranged on the valve body, the electromagnetic driving mechanism comprises a base, the base is arranged on the valve body; the electromagnetic coil is arranged in the base; the shaft core is arranged in the electromagnetic coil, and a part of the shaft core extends out of the base; wherein a clamping piece is detachably installed on a part of the shaft core, the clamping piece is provided with an elastic part, and the elastic part abuts against the base so that the clamping piece and the shaft core can be locked. According to the utility model, the shaft core is locked through the clamping sheet, so that the opening degree adjustment accuracy of the valve plug is increased, the target opening degree is successfully adjusted once, the production efficiency is improved, and the product precision and performance consistency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of proportional valves, in particular to a proportional valve shaft core locking structure. Background Art

[0002] In the prior art, the moving magnet type proportional valve pushes the valve plug assembly open through the interaction between the electromagnetic field generated when the coil is energized and the magnet, thereby opening the passage. The electromagnetic field loop is from the bracket to the shaft core. After the shaft core is adjusted into place and locked by the nut, the shaft core changes from being unstressed to being stressed, which will change the relative position of the shaft core and the bracket. At the same time, the gap between the nut and the bracket changes, causing the magnetic resistance in the bracket shaft core nut to change, affecting the change of electromagnetic force, making it difficult to adjust the valve plug opening. Utility Model Content

[0003] In view of the above-mentioned problems existing in the existing shaft core locking, the present invention aims to provide a proportional valve shaft core locking structure, which locks the shaft core by a card to increase the accuracy of valve plug opening adjustment, successfully adjusts to the target opening in one time, improves production efficiency, and improves product accuracy and performance consistency.

[0004] The specific technical solutions are as follows:

[0005] A proportional valve shaft core locking structure comprises: a valve body and an electromagnetic drive mechanism installed on the valve body, wherein the electromagnetic drive mechanism comprises:

[0006] A base, the base being mounted on the valve body;

[0007] An electromagnetic coil, wherein the electromagnetic coil is disposed in the base;

[0008] An axis core, the axis core is disposed in the electromagnetic coil, and a portion of the axis core extends out of the base;

[0009] Wherein, a card is detachably mounted on a portion of the shaft core, and the card is limitedly matched with the base along the axial direction of the shaft core so that the card is locked with the shaft core.

[0010] In the above-mentioned proportional valve shaft core locking structure, the card has an elastic part, and the elastic part abuts against the base to lock the card and the shaft core.

[0011] In the above-mentioned proportional valve shaft core locking structure, the card is clamped on the shaft core, and the card is locked with the base along the axial direction of the shaft core through the elastic part.

[0012] In the above-mentioned proportional valve shaft core locking structure, the card and / or the elastic part cooperates with the base in a circumferential limiting manner along the shaft core.

[0013] The above-mentioned proportional valve shaft core locking structure, wherein the shaft core has a card slot, and the card is engaged with the card slot;

[0014] The card includes a card board and two first feelers arranged on the card board, and the two first feelers are engaged with the card slot;

[0015] A groove is formed between the clamping plate and the two first antennae, and a groove wall of the groove abuts against the clamping groove.

[0016] The above-mentioned proportional valve shaft core locking structure, wherein the base is provided with at least one card block, and the card and / or the elastic part cooperates with the card block in a circumferential limit direction of the shaft core;

[0017] The base is provided with two clamping blocks, and the card and / or the elastic part is clamped between the two clamping blocks to limit the card from rotating along the circumferential direction of the shaft core.

[0018] In the above-mentioned proportional valve shaft core locking structure, the end of the clamping plate away from the first feeler has a curved structure.

[0019] The above-mentioned proportional valve shaft core locking structure, wherein the elastic part comprises: at least one second feeler, the second feeler abuts against the base;

[0020] The second antenna is arranged in a bent manner;

[0021] The elastic part includes: two second feelers, and the two second feelers are respectively arranged on two sides of the card.

[0022] In the above-mentioned proportional valve shaft core locking structure, the two first feelers, the clamping plate and the two second feelers are an integrated structure.

[0023] The above-mentioned proportional valve shaft core locking structure, wherein the two clamping blocks and the base are an integrated structure;

[0024] The base is provided with two through slots, and the two through slots are matched with the two block structures respectively.

[0025] In the above-mentioned proportional valve shaft core locking structure, the card and the elastic part are made of stainless steel.

[0026] Compared with the prior art, the above technical solution has the following positive effects:

[0027] The shaft core of the utility model is always subjected to the elastic force of the elastic part during the process of adjusting up and down. When the shaft core is adjusted to the right position, it is automatically locked synchronously, the magnetic resistance does not change, the valve plug opening does not change, the adjustment accuracy is increased, the adjustment is convenient, and the production efficiency is improved;

[0028] The card and the elastic part of the utility model are made of non-magnetic stainless steel material. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of a proportional valve shaft core locking structure of the utility model;

[0030] Figure 2 This is a front view of the overall structure of a proportional valve shaft core locking structure of the utility model;

[0031] Figure 3 This is a sectional view of the overall structure of a proportional valve shaft core locking structure of the utility model;

[0032] Figure 4 This is a structural schematic diagram of a card of a proportional valve shaft core locking structure of the utility model;

[0033] In the accompanying drawings: 1. valve body; 2. electromagnetic drive mechanism; 3. card; 4. elastic part; 11. valve chamber; 12. valve plug assembly; 13. valve port; 21. base; 22. electromagnetic coil; 23. shaft core; 24. card slot; 25. card block; 26. through slot; 31. card plate; 32. first feeler; 33. groove; 34. bending structure; 41. second feeler. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0035] like Figures 1 to 4 , a preferred embodiment of a proportional valve shaft core locking structure is shown, comprising: a valve body 1 and an electromagnetic drive mechanism 2 installed on the valve body 1 .

[0036] Further, as a preferred embodiment, the electromagnetic drive mechanism 2 includes: a base 21, an electromagnetic coil 22 and a shaft core 23, the base 21 is installed on the valve body 1, the electromagnetic coil 22 is arranged in the base 21, the shaft core 23 is arranged in the electromagnetic coil 22, and part of the shaft core 23 extends out of the base 21.

[0037] Further, as a preferred embodiment, a card 3 is detachably mounted on the shaft core 23 , and the card 3 has an elastic portion 4 , which abuts against the base 21 to lock the card 3 and the shaft core 23 .

[0038] The elastic portion provides elastic force along the axial direction of the shaft core.

[0039] Preferably, the card 3 and the elastic part 4 are an integrated structure.

[0040] Further, as a preferred embodiment, the card 3 is clamped on the shaft core 23 , and the card 3 is locked with the base 21 along the axial direction of the shaft core 23 through the elastic part 4 .

[0041] The snap-on structure makes installation easy.

[0042] Further, as a preferred embodiment, the card 3 and / or the elastic portion 4 cooperates with the base 21 in a circumferential limiting manner along the shaft core 23 .

[0043] In addition, the card 3 is limited along the circumferential direction of the shaft core 23 to prevent the card 3 from falling off.

[0044] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention.

[0045] The utility model also has the following implementation methods based on the above:

[0046] In further embodiments of the present invention, please continue to refer to Figures 1 to 4 As shown, the shaft core 23 has a card slot 24 , and the card 3 is engaged with the card slot 24 .

[0047] Preferably, the groove 24 is an annular groove.

[0048] In a further embodiment of the present invention, the card 3 includes a card plate 31 and two first feelers 32 disposed on the card plate 31 , and the two first feelers 32 are engaged with the card slot 24 .

[0049] Preferably, the clamping plate 31 and the first antenna 32 are both flat plate structures.

[0050] In a further embodiment of the present invention, a groove 33 is formed between the clamping plate 31 and the two first feelers 32 , and a groove wall of the groove 33 abuts against the clamping groove 24 .

[0051] Preferably, one end of the clamping plate 31 located in the groove 33 is clamped with the clamping slot 24 .

[0052] In a further embodiment of the utility model, at least one block 25 is provided on the base 21 , and the card 3 and / or the elastic portion 4 cooperate with the block 25 in a circumferential limiting manner along the shaft core 23 .

[0053] In a further embodiment of the present invention, the base 21 has two clamping blocks 25 , and the card 3 and / or the elastic portion 4 are clamped between the two clamping blocks 25 to limit the card 3 from rotating along the circumferential direction of the shaft core 23 .

[0054] Preferably, the block 25 structure is provided so that the block 25 limits the elastic part 4 , or the block 25 limits the card 3 , or the block 25 limits both the card 3 and the elastic part 4 .

[0055] In a further embodiment of the present invention, one end of the clamping plate 31 away from the first feeler 32 has a bent structure 34 .

[0056] The structural strength of the card 3 can be improved, and at the same time, it is convenient to grasp during manual installation.

[0057] In a further embodiment of the present invention, the elastic portion 4 includes: at least one second feeler 41 , and the second feeler 41 abuts against the base 21 .

[0058] In a further embodiment of the present invention, the second antenna 41 is bent.

[0059] The curved structure has tension after compression and is elastic.

[0060] In a further embodiment of the present invention, the elastic portion 4 includes two second feelers 41 , and the two second feelers 41 are respectively arranged on two sides of the card 3 .

[0061] In a further embodiment of the present invention, the two first feelers 32, the clamping plate 31 and the two second feelers 41 are an integrated structure.

[0062] In a further embodiment of the present invention, the two clamping blocks 25 and the base 21 are an integrated structure.

[0063] In a further embodiment of the present invention, the base 21 has two through slots 26 , and the two through slots 26 are matched with the structures of the two clamping blocks 25 respectively.

[0064] Preferably, the portion in the through groove 26 on the base 21 can be pushed out and bent to form a clamping block 25 on the base 21 .

[0065] In a further embodiment of the present invention, the card 3 and the elastic part 4 are made of stainless steel.

[0066] The card 3 and the elastic part 4 of the utility model are made of non-magnetic stainless steel material.

[0067] The valve body 1 has a valve cavity 11 in it, and a valve plug assembly 12 is movably arranged in the valve cavity 11 . The electromagnetic driving mechanism 2 is used for driving the valve plug assembly 12 to move.

[0068] The valve body 1 is provided with a valve port 13 , and the valve plug assembly 12 is in sealing cooperation with the valve port 13 .

[0069] The shaft core 23 of the utility model is always subjected to the elastic force of the elastic part 4 during the up and down adjustment process. When the shaft core 23 is adjusted into place, it is automatically locked synchronously, the magnetic resistance does not change, the valve plug opening does not change, the adjustment accuracy is increased, the adjustment is convenient, and the production efficiency is improved.

[0070] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A proportional valve shaft core locking structure, comprising: A valve body and an electromagnetic drive mechanism installed on the valve body, wherein the electromagnetic drive mechanism comprises: A base, the base being mounted on the valve body; An electromagnetic coil, wherein the electromagnetic coil is disposed in the base; An axis core, the axis core is disposed in the electromagnetic coil, and a portion of the axis core extends out of the base; Wherein, a card is detachably mounted on the shaft core, and the card and the base are limitedly matched along the axial direction of the shaft core so that the card and the shaft core are locked; The card has an elastic part, which abuts against the base to lock the card and the shaft core; The shaft core is provided with a card slot, and the card is engaged with the card slot; The card includes a card board and two first feelers arranged on the card board, and the two first feelers are engaged with the card slot; A groove is formed between the clamping plate and the two first antennae, and a groove wall of the groove abuts against the clamping groove.

2. The proportional valve shaft core locking structure according to claim 1, characterized in that: The card is clamped on the shaft core, and the card is locked with the base along the axial direction of the shaft core through the elastic part.

3. The proportional valve shaft core locking structure according to claim 2, characterized in that: The card and / or the elastic portion is / are in limited position cooperation with the base along the circumference of the shaft core.

4. The proportional valve shaft core locking structure according to claim 1, characterized in that: The base is provided with at least one card block, and the card and / or the elastic part cooperate with the card block in a circumferential limiting manner along the axis core; The base is provided with two clamping blocks, and the card and / or the elastic part is clamped between the two clamping blocks to limit the card from rotating along the circumferential direction of the shaft core.

5. The proportional valve shaft core locking structure according to claim 1, characterized in that: One end of the card plate away from the first feeler has a bent structure.

6. The proportional valve shaft core locking structure according to claim 5, characterized in that: The elastic portion includes: at least one second feeler, the second feeler abutting against the base; The second antenna is arranged in a bent manner; The elastic part includes: two second feelers, which are respectively arranged on two sides of the card; The two first antennae, the clamping plate and the two second antennae are an integrated structure.

7. The proportional valve shaft core locking structure according to claim 4, characterized in that: The two card blocks and the base are an integrated structure; The base is provided with two through slots, and the two through slots are matched with the two block structures respectively.

8. The proportional valve shaft core locking structure according to claim 1, characterized in that: The card and the elastic part are made of stainless steel.

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