An electronic expansion valve connecting pipe assembly

Abstract

This utility model discloses an electronic expansion valve connecting pipe assembly, including a valve body, an inlet pipe, an outlet pipe, a connecting pipe one, and a connecting pipe two, and also includes several connecting discs, which are fixedly installed at the connection ends of the inlet pipe, the outlet pipe, and the connecting pipe one and the connecting pipe two, for fixing the inlet pipe to the connecting pipe one and the outlet pipe to the connecting pipe two; a pair of fixing sleeves, which are respectively snapped into flange one and flange three, and the top ends are located outside flange one and flange three; the outer diameter of the fixing sleeves is smaller than the inner diameter of the connecting discs; a sealing ring, which is movably sleeved outside the fixing sleeves; the sealing ring is located at the connection between flange one and flange two, and flange three and flange four; a filter screen, which is fixedly installed at the top end of the fixing sleeve located on flange one; the top end of the filter screen is movably located inside the connecting pipe one. Through the setting of several flanges, the inlet pipe, the outlet pipe and the external pipeline can be conveniently fixedly connected, and the pipeline connection is sealed by setting the sealing ring in the flange.

Description

Technical Field

[0001] This utility model belongs to the field of electronic expansion valve technology, and in particular relates to an electronic expansion valve connecting pipe assembly. Background Technology

[0002] An electronic expansion valve is a throttling element that allows the refrigerant flow into a refrigeration unit according to a preset program. An expansion valve connector is used to connect an external pipe to the electronic expansion valve, so that the electronic expansion valve can regulate the flow rate of the refrigerant flowing in the pipe. For example, an easy-to-install electronic expansion valve with patent publication number CN222837158U is not convenient to connect to an external pipe during installation. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art and to provide an electronic expansion valve connecting pipe assembly to realize convenient connection between the electronic expansion valve and the external pipeline.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] An electronic expansion valve connecting pipe assembly includes a valve body, an inlet pipe, an outlet pipe, a first connecting pipe, and a second connecting pipe, characterized in that it further includes:

[0006] Several connecting discs are fixedly installed at the connection ends of the inlet pipe, the outlet pipe, the connecting pipe one and the connecting pipe two, to realize the fixed connection between the inlet pipe and the connecting pipe one, and the outlet pipe and the connecting pipe two.

[0007] A pair of seals, located within the connecting disc, are used to seal the connection.

[0008] Furthermore, the connecting disk includes:

[0009] Flange 1, which is fixed to the inlet pipe connection end;

[0010] Flange 2 is fixed to the connecting end of connecting pipe 1 and is fixedly connected to flange 1;

[0011] Flange 3, which is fixed to the connection end of the liquid outlet pipe;

[0012] Flange 4 is fixed to the connecting end of connecting pipe 2 and is also fixedly connected to flange 3.

[0013] Furthermore, it also includes:

[0014] Several positioning holes are evenly distributed on flange one and flange three;

[0015] Several elastic elements are fixedly installed in the positioning holes:

[0016] Several locating pins are evenly distributed on flange two and flange four, and are aligned with the locating holes one by one.

[0017] Furthermore, the elastic element includes:

[0018] The positioning rod is fixed inside the positioning hole;

[0019] A sliding sleeve, which is slidably mounted on a positioning rod;

[0020] A fixing plate is fixed to the top of the sliding sleeve;

[0021] The spring has its two ends fixed to the inner wall of the positioning hole and the fixing plate.

[0022] Furthermore, the seal includes:

[0023] A pair of fixed sleeves are respectively snapped into flange one and flange three, and their top ends are located outside flange one and flange three;

[0024] The outer diameter of the fixed sleeve is smaller than the inner diameter of the connecting plate;

[0025] The sealing ring is movably fitted outside the fixed sleeve;

[0026] The sealing ring is located at the connection between flange one and flange two, and flange three and flange four.

[0027] Furthermore, it also includes:

[0028] The filter screen is fixed to the top of the fixed sleeve located on the flange.

[0029] The top of the filter screen is movably located inside the connecting pipe.

[0030] Furthermore, it also includes:

[0031] The slots are symmetrically located on the inner walls of flange one and flange three;

[0032] The locking blocks are symmetrically fixed on both sides of the fixed sleeve;

[0033] The active card is connected to the corresponding card slot.

[0034] Furthermore, it also includes:

[0035] Several connecting holes are evenly distributed on the connecting plate;

[0036] Several bolts, each corresponding to and moving through the connecting holes on flange one and flange three, and flange two and flange four;

[0037] Several nuts, which are detachably mounted on the bolt.

[0038] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0039] 1. In this utility model, by setting up several flanges, the inlet pipe, outlet pipe and external pipeline can be conveniently and fixedly connected, thereby improving the convenience of installing the electronic expansion valve.

[0040] 2. In this utility model, by setting a sealing ring in the flange, the pipe connection is sealed to prevent liquid leakage during liquid transmission and improve the sealing performance of the pipeline transmission.

[0041] 3. In this utility model, by setting a filter screen at the liquid inlet pipe of the electronic expansion valve, the transmitted liquid is filtered to prevent impurities carried in the transmitted liquid from damaging the internal parts of the electronic expansion valve, thereby protecting the electronic expansion valve and improving its service life. Attached Figure Description

[0042] The present invention will be further described below with reference to the accompanying drawings:

[0043] Figure 1 This is a schematic diagram of the structure of an electronic expansion valve connecting pipe assembly according to the present invention;

[0044] Figure 2 This is a front sectional view of the liquid inlet pipe and the connecting pipe in this utility model;

[0045] Figure 3 This is a three-dimensional structural diagram of the flange in this utility model;

[0046] Figure 4 This is a schematic diagram of the two-dimensional structure of the flange in this utility model;

[0047] Figure 5 This is a front sectional view of the flange in this utility model;

[0048] Figure 6 for Figure 2 A magnified schematic diagram of the local structure at point A in the middle.

[0049] In the diagram: 1-Valve body; 2-Inlet pipe; 3-Outlet pipe; 4-Connecting pipe one; 5-Connecting pipe two; 6-Connecting disc; 7-Seal; 61-Flange one; 62-Flange two; 63-Flange three; 64-Flange four; 8-Positioning hole; 9-Elastic element; 10-Positioning pin; 91-Positioning rod; 92-Sliding sleeve; 93-Fixing plate; 94-Spring; 11-Fixing sleeve; 12-Sealing ring; 13-Filter screen; 14-Slot; 15-Slot; 16-Connecting hole; 17-Bolt; 18-Nut. Detailed Implementation

[0050] like Figures 1 to 6As shown, this utility model discloses an electronic expansion valve connecting pipe assembly, including a valve body 1, an inlet pipe 2, an outlet pipe 3, a first connecting pipe 4, and a second connecting pipe 5. It also includes several connecting discs 6, which are fixedly disposed at the connection ends of the inlet pipe 2, the outlet pipe 3, the first connecting pipe 4, and the second connecting pipe 5, for the purpose of fixing the inlet pipe 2 to the first connecting pipe 4 and the outlet pipe 3 to the second connecting pipe 5; and a pair of sealing elements 7, which are disposed in the connecting discs 6, for the purpose of sealing the connection.

[0051] The connecting plate 6 includes flange 1 61, which is fixed to the connection end of the inlet pipe 2; flange 2 62, which is fixed to the connection end of the connecting pipe 1 4 and is fixedly connected to flange 1 61; flange 3 63, which is fixed to the connection end of the outlet pipe 3; and flange 4 64, which is fixed to the connection end of the connecting pipe 2 5 and is fixedly connected to flange 3 63.

[0052] It also includes several positioning holes 8, which are evenly distributed on flange 1 61 and flange 3 63; several elastic elements, which are respectively fixed in the positioning holes 8; and several positioning pins 10, which are evenly distributed on flange 2 62 and flange 4 64, and are one-to-one opposite to the positioning holes 8.

[0053] The elastic element includes a positioning rod 91, which is fixed in the positioning hole 8; a sliding sleeve 92, which is slidably disposed on the positioning rod 91; a fixing plate 93, which is fixed at the top of the sliding sleeve 92; and a spring 94, whose two ends are fixed to the inner wall of the positioning hole 8 and the fixing plate 93.

[0054] The sealing element 7 includes a pair of fixed sleeves 11, which are respectively snapped into flange 1 61 and flange 3 63, and the top ends are located outside flange 1 61 and flange 3 63; wherein, the outer diameter of the fixed sleeve 11 is smaller than the inner diameter of the connecting plate 6; and a sealing ring 12, which is movably sleeved outside the fixed sleeves 11; wherein, the sealing ring 12 is located at the connection between flange 1 61 and flange 2 62, and flange 3 63 and flange 4 64.

[0055] It also includes a filter screen 13, which is fixed to the top of a fixed sleeve 11 located on a flange 61; wherein the top of the filter screen 13 is movably located inside a connecting pipe 4.

[0056] It also includes a slot 14, which is symmetrically arranged on the inner walls of flange 1 61 and flange 3 63; and a locking block 15, which is symmetrically fixed on both sides of the fixing sleeve 11; wherein the locking block 15 is movably engaged into the corresponding slot 14.

[0057] It also includes several connecting holes 16, which are evenly distributed on the connecting plate 6; several bolts 17, which correspond one-to-one with the connecting holes 16 on flange 1 61 and flange 3 63, flange 2 62 and flange 4 64; and several nuts 18, which are detachably disposed on the bolts 17.

[0058] The output end and input end of valve body 1 are fixedly connected to inlet pipe 2 and outlet pipe 3, and flange 61 and flange 63 are fixedly installed on the connection ends of inlet pipe 2 and outlet pipe 3, respectively; external pipe connecting pipe 4 and connecting pipe 5 are connected to inlet pipe 2 and outlet pipe 3, respectively, to realize the circulation and transmission of refrigerant in electronic expansion valve; flange 62 and flange 64 are fixedly installed on the connection ends of connecting pipe 4 and connecting pipe 5, respectively; flange 61, flange 62, flange 63 and flange 64 are provided with several evenly distributed connecting holes 16, and the positions of connecting holes 16 on flange 61 and flange 62, and flange 63 and flange 64 correspond to each other. Bolts 17 are movably inserted through the connecting holes 16 on flange 61 and flange 62, and flange 63 and flange 64, respectively, and the inlet pipe 2 and connecting pipe 4, and the outlet pipe 3 and connecting pipe 2 are fixedly connected by nuts 18.

[0059] Several positioning holes 8 are provided on the inner surfaces of flange 1 61 and flange 3 63, and positioning rods 91 are provided in the positioning holes 8. Sliding sleeves 92 are slidably provided on the outside of the positioning rods 91. The top of the sliding sleeves 92 is fixed to the fixing plate 93. The two ends of the springs 94 are fixedly connected to the fixing plate 93 and the inner wall of the positioning holes 8. Several positioning pins 10 are fixedly installed on the inner surfaces of flange 2 62 and flange 4 64, and the positions of the positioning pins 10 and the positioning holes 8 are corresponding. By sliding the positioning pins 10 into the positioning holes 8, the quick positioning and alignment of the connecting holes 16 on both sides can be achieved. At the same time, by installing bolts 17 and nuts 18, the positioning pins 10 slide in the positioning holes 8, and push the fixing plate 93 and the sliding sleeve 92 to slide in the positioning holes 8, and compress the springs 94. The elastic force generated by the deformation of the springs 94 increases the force on the bolts 17 and nuts 18, and prevents the nuts 18 from loosening.

[0060] Slots 14 are provided on both sides of the inner walls of flange 61 and flange 63. Locking blocks 15 are fixedly installed on both sides of the bottom of the fixing sleeve 11. By moving the locking blocks 15 on the fixing sleeve 11 into the slots 14, a pair of fixing sleeves 11 are respectively locked into flange 61 and flange 63. Simultaneously, the top of the fixing sleeve 11 extends outside flange 61 and flange 63. A sealing ring 12 is provided on the outside of the fixing sleeve 11. A filter screen 13 is fixedly installed on the top of the fixing sleeve 11 on flange 61. When flange 61... When fixedly connected to flange 2 62, filter screen 13 is movably installed inside flange 2 62 to filter the liquid flowing in inlet pipe 2 and connecting pipe 1 4; at the same time, when fixedly connected to flange 1 61 and flange 2 62, and flange 3 63 and flange 4 64, sealing ring 12 is provided at the connection between flange 1 61 and flange 2 62, and flange 3 63 and flange 4 64. Through the setting of sealing ring 12, the sealing connection between inlet pipe 2 and connecting pipe 1 4, and between outlet pipe 3 and connecting pipe 2 5 are achieved to prevent liquid leakage.

[0061] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. An electronic expansion valve connection pipe assembly comprising a valve body, a liquid inlet pipe, a liquid outlet pipe, a connection pipe 1 and a connection pipe 2, characterized in that, Also includes: A plurality of connecting discs are fixedly disposed at the connection ends of the inlet pipe, the outlet pipe, and connecting pipe one and connecting pipe two, for fixing the inlet pipe to connecting pipe one and the outlet pipe to connecting pipe two; a pair of sealing elements are disposed within the connecting discs for sealing the connection points; the connecting discs include: flange one, fixedly disposed at the connection end of the inlet pipe; flange two, fixedly disposed at the connection end of connecting pipe one and fixedly connected to flange one; flange three, fixedly disposed at the connection end of the outlet pipe; flange four, fixedly disposed at the connection end of connecting pipe two and fixedly connected to flange three; the sealing elements include: a pair of fixing sleeves, respectively snapped into flange one and flange three, with their top ends disposed outside flange one and flange three; wherein the outer diameter of the fixing sleeves is smaller than the inner diameter of the connecting discs; a sealing ring, movably disposed outside the fixing sleeves; wherein the sealing ring is disposed at the connection points of flange one and flange two, and flange three and flange four.

2. An electronic expansion valve connection tube assembly according to claim 1, wherein Also includes: A number of positioning holes are evenly distributed on flange one and flange three; a number of elastic elements are respectively fixed in the positioning holes; a number of positioning pins are evenly distributed on flange two and flange four, and are one-to-one with the positioning holes.

3. The electronic expansion valve connecting pipe assembly according to claim 2, characterized in that, The elastic element includes: a positioning rod fixedly disposed in the positioning hole; a sliding sleeve slidably disposed on the positioning rod; a fixing plate fixedly disposed at the top end of the sliding sleeve; and a spring whose two ends are fixedly connected to the inner wall of the positioning hole and the fixing plate.

4. The electronic expansion valve connecting pipe assembly according to claim 1, characterized in that, Also includes: A filter screen is fixed to the top of a fixed sleeve located on the flange; wherein the top of the filter screen is movably disposed inside the connecting pipe.

5. The electronic expansion valve connecting pipe assembly according to claim 4, characterized in that, Also includes: The slots are symmetrically arranged on the inner walls of flange one and flange three; The locking blocks are symmetrically fixed on both sides of the fixed sleeve; wherein the locking blocks are movably engaged into the corresponding locking slots.

6. The electronic expansion valve connecting pipe assembly according to claim 1, characterized in that, Also includes: A number of connecting holes are evenly distributed on the connecting plate; a number of bolts are movably inserted through the connecting holes on flange one and flange three, and flange two and flange four, respectively; and a number of nuts are detachably attached to the bolts.

Images