Disassembling and assembling assembly and disassembling and assembling tool for valve core of refrigeration equipment

Abstract

The utility model belongs to the technical field of refrigeration equipment maintenance, and particularly relates to a disassembly and assembly component and a disassembly and assembly tool for a valve core of refrigeration equipment. In order to overcome the defects that a pull rod and a dismounting head of an existing dismounting tool for the valve core of the refrigeration equipment are fixed through a pin shaft, and the pin shaft can be loosened or broken during pulling, the technical scheme adopted by the utility model is as follows: the dismounting assembly for the valve core of the refrigeration equipment comprises a dismounting shaft which is provided with a pull rod part; a force application groove which is in clearance fit with a rotary stress part of the valve core is formed in the first end of the pull rod part; the elastic piece forms a deformation anti-falling part matched with a movable rod of the valve core; and the elastic piece is arranged at the first end of the drawing rod part of the dismounting shaft. The utility model has the beneficial effects that the detachable pin shaft can be formed by only assembling the detachable shaft and the elastic piece, compared with a split pin shaft structure, the detachable pin shaft cannot be disassembled due to the failure of the pin shaft, and the assembly is easier.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration equipment maintenance, and in particular relates to a refrigeration equipment valve core disassembly and assembly component and a disassembly and assembly tool. Background Art

[0002] In order to prevent refrigerant leakage, common refrigeration equipment has valve cores at the refrigerant inlet and outlet interfaces. The valve core often needs to be replaced during the use of refrigeration equipment. Since the valve core is usually connected to the body of the refrigeration equipment through threads, it is necessary to rotate the valve core when disassembling. At the same time, since the valve core is usually set vertically, the disassembly tool also needs to be able to fix with the valve core so as to lift the valve core.

[0003] The rotating fixing structures of existing valve core removal tools are mainly divided into two types: one is to fix the valve core with an elastic member. In order to prevent the elastic member from separating from the shaft, the removal tool includes a pull rod, a removal head (a groove matching the valve core is provided, and the groove is usually a straight groove), a pin and an elastic member. The elastic member is installed between the pull rod and the removal head, and the pull rod and the removal head are connected by a pin (refer to Chinese patents CN215470903U-a vehicle air conditioning valve core removal tool, CN201535599U-a valve core replacer without releasing refrigerant); the other does not use an elastic member, and directly opens a clamping groove of a specific shape at the end of the clamping rod, and fixes the valve core by deformation of the two metal flaps forming the clamping groove (refer to U.S. Patent US10478953B2-Valve core removal tool).

[0004] The problems with the first split pin structure are: 1. After long-term use, the pin will loosen or break, causing the product to disintegrate; 2. There are a large number of parts; 3. The pin assembly is more troublesome. The problems with the second integrated structure are: 1. Due to processing and assembly reasons, the valve core may not be concentric with the clamping groove, so the material requirements for the clamping shaft are high, the processing requirements for the clamping groove are high, and the requirements for the valve core are also high; 2. The clamping groove and the valve core are interference fit and the clamping groove is small on the outside and large on the inside. The valve core needs to be stretched open and enter the clamping groove of the clamping rod, which is more laborious to operate; 3. The clamping groove needs to be precisely aligned with the valve core, which is more difficult to operate; 4. After long-term use, the clamping groove is prone to fatigue deformation and loses its clamping function, and the entire clamping shaft needs to be replaced after failure.

[0005] In addition, directly disassembling the valve core will cause the refrigerant in the refrigeration equipment to leak, which will not only cause economic losses but also pollute the environment. The relevant structure of the disassembly tool can avoid or reduce the refrigerant leakage during the replacement of the valve core, for example, CN201535599U-Valve core replacer without releasing refrigerant. Summary of the invention

[0006] The utility model aims at the existing refrigeration equipment valve core disassembly and assembly tool which uses elastic parts to fix the valve core when pulling and pulling, and the draw rod and the disassembly head are fixed by a pin shaft, which may loosen or break. The utility model provides a refrigeration equipment valve core disassembly and assembly assembly which still uses elastic parts but omits the pin shaft. The utility model also provides a disassembly and assembly tool using the refrigeration equipment valve core disassembly and assembly assembly.

[0007] To achieve the above purpose, the utility model adopts the following technical solution: a refrigeration equipment valve core disassembly and assembly assembly, the valve core includes a rotating force-bearing part and a movable rod, and the refrigeration equipment valve core disassembly and assembly assembly includes:

[0008] A disassembly shaft, wherein the disassembly shaft has a pull rod portion, and a force-applying groove is provided at a first end of the pull rod portion to be gap-matched with a rotating force-bearing portion of the valve core;

[0009] An elastic member, the elastic member forming a deformation anti-slip portion cooperating with a movable rod of the valve core, the elastic member being farther away from the valve core than the force application groove;

[0010] Wherein, the elastic member is installed on the first end of the pull rod portion of the disassembly shaft.

[0011] The refrigeration equipment valve core disassembly assembly of the utility model is used to rotate and fix the valve core. It can be composed of only two parts, a disassembly shaft and an elastic member. The disassembly shaft and the elastic member are clamped. Compared with the split pin shaft structure composed of a pull rod, a disassembly head, a pin shaft, and a clamping core rubber ring, it has the following advantages: 1. There will be no disassembly problem caused by the failure of the pin shaft, 2. The number of parts is less, and 3. It is easier to assemble; compared with the direct integrated structure, it has the following advantages: 1. The processing accuracy requirement is low, and it will not be unusable due to the displacement of the valve core; 2. The operation is more labor-saving. The diameter of the disassembly shaft head is usually 4.4mm, and the head has a chamfer, which can be easily aligned and inserted into the threaded hole of the valve core mouth (the bottom diameter of the threaded hole is usually 4.7mm), and the axis of the disassembly shaft and the threaded hole of the valve core mouth can be reliably aligned (through the disassembly cap assembly of the refrigeration equipment valve core disassembly tool and the external thread of the valve core mouth); the straight groove at the end of the disassembly head is wider than the straight boss of the valve core, and the boss can be easily clamped. The first end of the draw rod is provided with a force-applying groove that is clearance-matched with the rotating force-bearing part of the valve core, that is, the force-applying groove is integrated with the draw rod (the force-applying groove is directly formed on the draw rod, or in other words, the force-applying groove is directly processed on the draw rod), instead of providing a force-applying groove on the disassembly head as in the prior art, and the disassembly head is then assembled with the draw rod through a pin. The entire disassembly shaft including the draw rod is usually formed in one piece. In other schemes, the draw rod of the disassembly shaft can also be assembled.

[0012] As an improvement, the elastic member is installed on the first end of the disassembly shaft by one or a combination of the following methods: clamping, bonding, tight fitting, and threaded connection;

[0013] The deformation anti-slip portion forms a deformation groove that is interference-fitted with the movable rod of the valve core, or the deformation anti-slip portion forms a clamping groove that is clamped with the movable rod of the valve core. The elastic member can be installed in the first end of the disassembly shaft by means of single clamping, bonding, interference fit or threaded connection, or can be installed in the first end of the disassembly shaft by means of a combination of clamping and bonding, a combination of clamping and interference fit, a combination of bonding and interference fit, a combination of bonding and threaded connection, a combination of interference fit and threaded connection, or bonding plus interference fit (tight fit) plus threaded connection.

[0014] As an improvement, the elastic member is clamped on the first end of the disassembly and assembly shaft, a radial clamping hole is opened on the extension wall formed by the axial extension of the side wall of the force-applying groove of the disassembly and assembly shaft, and the elastic member has a clamping block adapted to the clamping hole.

[0015] As an improvement, there are two clamping holes, which are respectively located on two side walls of the force-applying groove, and there are two clamping blocks, which are respectively clamped in the two clamping holes;

[0016] The elastic member is clamped on the first end of the disassembly shaft, and the clamping hole radially penetrates the side wall of the force-applying groove; the force-applying groove of the disassembly shaft is in a straight line shape; the force-applying groove of the disassembly shaft is radially penetrated.

[0017] As an improvement, the elastic member is clamped on the first end of the disassembly and assembly shaft, and the extended wall formed by the axial extension of the side wall of the force-applying groove of the disassembly and assembly shaft forms a clamping block, the cross-section of the clamping block is roughly a right-angled triangle, and the deformation anti-slip portion of the elastic member includes a columnar base and an anti-slip groove portion radially extending from the columnar base and cooperating with the clamping block.

[0018] As an improvement, a processed circular hole is opened at the first end of the disassembly and assembly shaft, the inner end of the processed circular hole is conical, the depth of the processed circular hole is greater than the length of the force groove, the deformation anti-detachment part is cylindrical and adapted to the processed circular hole, and the aperture of the processed circular hole is greater than the width of the force groove.

[0019] As an improvement, one or more axially distributed clamping grooves are formed on the deformation anti-slip portion to be clamped with the movable rod of the valve core, and the clamping grooves include a necking section, an arc section and a radial section.

[0020] As an improvement, the elastic member forms a guide portion adapted to the force application groove;

[0021] The outer end of the deformation groove of the elastic member is chamfered;

[0022] The first end of the disassembly shaft forms an annular anti-slip convex portion, and the anti-slip convex portion is axially staggered with the deformation groove;

[0023] The disassembly and assembly shaft is integrally formed.

[0024] A refrigeration equipment valve core disassembly and assembly tool, the refrigeration equipment valve core disassembly and assembly tool comprising the aforementioned refrigeration equipment valve core disassembly and assembly component.

[0025] As an improvement of the refrigeration equipment valve core disassembly and assembly tool, the refrigeration equipment valve core disassembly and assembly tool also includes:

[0026] A pipeline assembly, wherein the pipeline assembly has a pipeline passage for the disassembly shaft to enter and exit, the first end of the pipeline assembly has an internal thread with a diameter greater than that of the disassembly shaft, and the second end of the pipeline assembly has an external thread;

[0027] a ball valve, the ball valve opening and closing the pipeline channel;

[0028] An operating member, the operating member is fixedly connected to the second end of the disassembly shaft, and the operating member is located outside the pipeline channel;

[0029] A disassembly cap assembly comprises a threaded cap threadedly connected to the external thread of the pipeline assembly, an anti-slip ring and a sealing ring installed in the threaded cap.

[0030] The beneficial effects of the refrigeration equipment valve core disassembly and assembly component of the utility model are as follows: the refrigeration equipment valve core disassembly and assembly component is used to rotate and fix the valve core, and the refrigeration equipment valve core disassembly and assembly component can be composed of only two parts, a disassembly shaft and an elastic part, and the disassembly shaft and the elastic part are clamped together. Compared with the split pin shaft structure composed of a pull rod, a disassembly head, a pin shaft, and a clamping core rubber ring, it has the following advantages: 1. There will be no disassembly problem caused by pin shaft failure, 2. The number of parts is smaller, and 3. Assembly is easier; compared with the direct integrated structure, it has the following advantages: 1. The processing accuracy requirement is low, and the valve core will not be unusable due to displacement; 2. The operation is more labor-saving.

[0031] The refrigeration equipment valve core disassembly and assembly tool of the utility model adopts the refrigeration equipment valve core disassembly and assembly component of the utility model and has all the beneficial effects of the refrigeration equipment valve core disassembly and assembly component of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a refrigeration equipment valve core disassembly and assembly tool according to Embodiment 1 of the utility model.

[0033] Figure 2 It is a cross-sectional view of a refrigeration equipment valve core disassembly and assembly tool according to Embodiment 1 of the utility model.

[0034] Figure 3 It is a structural schematic diagram of a disassembly and assembly component of a refrigeration equipment valve core disassembly and assembly tool according to Embodiment 1 of the utility model.

[0035] Figure 4 It is a structural exploded view of the disassembly and assembly components of the refrigeration equipment valve core disassembly and assembly tool according to the first embodiment of the utility model (the valve core is also shown).

[0036] Figure 5 2 is a cross-sectional view of a disassembly and assembly assembly of a refrigeration equipment valve core disassembly and assembly tool according to the first embodiment of the utility model (with Figure 2 different perspectives).

[0037] Figure 6 It is a structural schematic diagram of a disassembly shaft of a disassembly assembly component of a refrigeration equipment valve core disassembly tool according to Embodiment 1 of the utility model.

[0038] Figure 7 It is a structural schematic diagram of an elastic member of a disassembly and assembly assembly of a refrigeration equipment valve core disassembly and assembly tool according to Embodiment 1 of the utility model.

[0039] Figure 8 It is a structural schematic diagram of a disassembly and assembly component of a refrigeration equipment valve core disassembly and assembly tool according to a second embodiment of the utility model.

[0040] Fig. 9 It is a cross-sectional view of a disassembly and assembly component of a refrigeration equipment valve core disassembly and assembly tool according to a second embodiment of the utility model.

[0041] Fig.10 It is a structural schematic diagram of a disassembly shaft of a disassembly assembly component of a refrigeration equipment valve core disassembly tool according to a second embodiment of the utility model.

[0042] Fig.11 It is a structural schematic diagram of the elastic member of the disassembly and assembly assembly of the refrigeration equipment valve core disassembly and assembly tool of the second embodiment of the utility model.

[0043] Fig.12 It is a structural schematic diagram of a disassembly and assembly component of a refrigeration equipment valve core disassembly and assembly tool according to a third embodiment of the utility model.

[0044] Fig.13 It is a cross-sectional view of a disassembly and assembly component of a refrigeration equipment valve core disassembly and assembly tool according to Embodiment 3 of the present utility model.

[0045] Fig.14 It is a structural schematic diagram of a disassembly and assembly component of a refrigeration equipment valve core disassembly and assembly tool according to a fourth embodiment of the utility model.

[0046] Fig.15 It is a cross-sectional view of a disassembly and assembly component of a refrigeration equipment valve core disassembly and assembly tool according to a fourth embodiment of the utility model.

[0047] In the figure, 1, disassembly and assembly shaft; 10, pull rod; 11, force groove; 12, clamping hole; 13, processed round hole; 14, guide groove; 15, anti-drop convex part; 16, clamping block;

[0048] 2. elastic member; 21. deformation anti-slip portion; 22. clamping block; 23. guide portion; 24. deformation groove; 25. anti-slip groove portion; 251. necking section; 252. arc section; 253. radial section; 26. clamping groove portion; 261. necking section; 262; arc section; 263. radial section;

[0049] 3. Pipeline components;

[0050] 4. Ball valve;

[0051] 5. Operating parts;

[0052] 6. Disassembly cap assembly; 61. Threaded cap; 62. Anti-slip ring; 63. Sealing ring;

[0053] 7. Valve core. DETAILED DESCRIPTION

[0054] The technical solutions of the embodiments of the present invention are explained and described below, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0055] See also Figures 1 to 15 The refrigeration equipment valve core disassembly and assembly assembly of the utility model embodiment, the valve core includes a rotating force-bearing part and a movable rod, and the refrigeration equipment valve core disassembly and assembly assembly includes:

[0056] A disassembly shaft, wherein the disassembly shaft has a pull rod portion, and a force-applying groove is provided at a first end of the pull rod portion to be gap-matched with a rotating force-bearing portion of the valve core;

[0057] An elastic member, the elastic member forming a deformation anti-slip portion cooperating with a movable rod of the valve core, the elastic member being farther away from the valve core than the force application groove;

[0058] Wherein, the elastic member is installed on the first end of the pull rod portion of the disassembly shaft.

[0059] The refrigeration equipment valve core disassembly and assembly component of the utility model embodiment is used to rotate and fix the valve core, and can be composed of only two parts: a disassembly shaft and an elastic part. The disassembly shaft and the elastic part are clamped together. Compared with the split pin shaft structure composed of a pull rod, a disassembly head, a pin shaft, and a clamping core rubber ring, it has the following advantages: 1. There will be no disassembly problem due to pin shaft failure, 2. The number of parts is smaller, and 3. Assembly is easier; compared with the direct integrated structure, it has the following advantages: 1. The processing accuracy requirement is low, and the valve core will not be unusable due to displacement; 2. The operation is more labor-saving.

[0060] Embodiment 1

[0061] See also Figures 1 to 7 The refrigeration equipment valve core 7 disassembly and assembly tool of the first embodiment of the utility model comprises:

[0062] A disassembly shaft 1, wherein a force-applying groove 11 is provided at a first end thereof and is clearance-matched with a rotating force-bearing portion of a valve core 7;

[0063] An elastic member 2, wherein the elastic member 2 is provided with a deformation groove 24 which is interference-fitted with the movable rod of the valve core 7; the elastic member 2 is clamped to the first end of the disassembly shaft 1;

[0064] A pipeline assembly 3, wherein the pipeline assembly 3 has a pipeline passage for the disassembly shaft 1 to enter and exit, the first end of the pipeline assembly 3 has an internal thread with a diameter greater than that of the disassembly shaft 1, and the second end of the pipeline assembly 3 has an external thread;

[0065] A ball valve 4, the ball valve 4 opens and closes the pipeline channel;

[0066] An operating member 5, wherein the operating member 5 is fixedly connected to the second end of the disassembly shaft 1, and the operating member 5 is located outside the pipeline channel;

[0067] The disassembly cap assembly 6 includes a threaded cap 61 threadedly connected to the external thread of the pipeline assembly 3 , an anti-slip ring 62 and a sealing ring 63 installed in the threaded cap 61 .

[0068] In this embodiment, the valve core 7 includes a rotating force-bearing portion and a movable rod. The rotating force-bearing portion rotates with the valve core 7 as a whole, and air intake is achieved when the movable rod is pressed down by an external force. The rotating force-bearing portion of the valve core 7 is usually in the shape of a straight boss. The outer end of the movable rod is usually T-shaped. In this embodiment, the structure of the valve core 7 is only briefly illustrated, and the specific structure of the valve core 7 can refer to the prior art.

[0069] In this embodiment, the force-applying groove 11 of the disassembling shaft 1 is in a straight line shape; the force-applying groove 11 of the disassembling shaft 1 is radially continuous.

[0070] In this embodiment, a radial engaging hole 12 is formed on the side wall of the force-applying groove 11 of the disassembly / assembly shaft 1 , and the elastic member 2 has an engaging block 22 adapted to the engaging hole 12 .

[0071] In this embodiment, the deformation anti-slip portion 21 of the elastic member 2 includes a columnar base, and the end of the columnar base away from the valve core 7 is conical.

[0072] In this embodiment, there are two engaging holes 12 respectively located on two side walls of the force-applying groove 11 , and there are two engaging blocks 22 respectively engaged in the two engaging holes 12 ; the engaging holes 12 are radially through.

[0073] In this embodiment, the elastic member 2 forms a guide portion 23 adapted to the force application groove 11, and there are two guide portions 23, and the connecting line of the two guide portions 23 is perpendicular to the connecting line of the two clamping blocks 22. The outer surface of the guide portion 23 is an arc surface adapted to the size of the disassembly shaft 1. The outer end of the clamping block 22 is chamfered.

[0074] In this embodiment, a processing circular hole 13 is provided at the first end of the disassembly shaft 1, the inner end of the processing circular hole 13 is in a conical shape, the depth of the processing circular hole 13 is greater than the length of the force-applying groove 11, the deformation anti-slip portion 21 is adapted to the processing circular hole 13, the aperture of the processing circular hole 13 is greater than the width of the force-applying groove 11, and a guide groove 14 is formed on the side wall of the force-applying groove 11. The shape of the deformation anti-slip portion 21 of the elastic member 2 is adapted to the shape of the processing circular hole 13. The processing circular hole 13 is a blind hole, and a conical shape is inevitably formed at the inner end when it is processed by a drill. By forming the guide groove 14 on the side wall of the force-applying groove 11, the guide groove 14 can also enable the elastic member 2 to obtain a larger wall thickness and / or volume to ensure the performance of the elastic member 2. When the volume of the elastic member 2 is too small and / or the wall thickness is too thin, the clamping force generated by the deformation of the elastic member 2 is small, and the elastic member 2 is easy to break.

[0075] In this embodiment, the first end of the disassembly shaft 1 forms an annular anti-slip convex portion 15, and the anti-slip convex portion 15 is axially offset from the deformation groove 24. The anti-slip convex portion 15 cooperates with the anti-slip ring 62 of the disassembly cap assembly 6 to prevent the disassembly shaft from separating from the disassembly cap assembly 6. The anti-slip convex portion 15 also cooperates with the pipeline channel gap of the pipeline assembly 3 to reduce refrigerant leakage and reduce the resistance when the disassembly shaft moves. The radial dimension of the anti-slip convex portion 15 of the disassembly shaft 1 is greater than the radial dimension of the valve core 7.

[0076] In this embodiment, the outer end of the deformation groove 24 of the elastic member 2 is chamfered so that the T-shaped portion of the outer end of the movable rod of the valve core 7 can easily enter the deformation groove 24 of the elastic member 2. The shape of the portion where the deformation groove 24 and the valve core 7 are tightly matched can be circular, elliptical, polygonal, etc., as long as the size can be tightly matched with the valve core 7.

[0077] In this embodiment, the disassembly shaft 1 is an integrated part, which reduces the assembly process.

[0078] For other unfinished structures of the tool for disassembling and assembling the valve core 7 of the refrigeration equipment of this embodiment, reference may be made to the prior art.

[0079] In this embodiment, the elastic member 2 includes a deformation anti-slip portion 21, a pair of clamping blocks 22 extending radially outward from the deformation anti-slip portion 21, and a pair of guide portions 23 extending radially outward from the deformation anti-slip portion 21 and perpendicular to the clamping blocks 22. The deformation anti-slip portion 21 is provided with a deformation groove 24, and the end of the deformation anti-slip portion 21 away from the valve core 7 is conical. The material of the elastic member 2 can be rubber, plastic, polyurethane, etc., as long as it can produce a certain elastic deformation.

[0080] The working process of the refrigeration equipment valve core 7 disassembly tool of this embodiment when replacing the valve core 7 is:

[0081] 1. Slightly pull up the disassembly shaft 1 (avoid interfering with the valve core 7 when the disassembly shaft 1 is located closest to the refrigeration equipment), and connect the air inlet of the tool to the refrigerant interface of the refrigeration equipment (the refrigerant interface has an external thread) by rotating to achieve sealing between the tool and the refrigerant interface (the first end of the pipe assembly 3 of the tool has an internal thread that matches the external thread of the refrigerant interface);

[0082] 2. Press down the disassembly shaft to make the straight boss (rotation force-bearing part) of the valve core 7 enter the force-bearing groove of the disassembly shaft;

[0083] 3. Rotate the knob (operating part 5) counterclockwise to make the disassembly shaft drive the valve core 7 to rotate;

[0084] 4. After rotating to the right position, pull out the disassembly shaft. Since the movable rod of the valve core 7 is tightly matched with the deformation groove 24 of the elastic member 2, the valve core 7 moves together with the elastic member 2 and the disassembly shaft. Due to the presence of the anti-drop ring 62 of the disassembly cap assembly 6, the disassembly shaft cannot be completely pulled out at this time.

[0085] 5. Close the ball valve 4. At this time, the refrigerant in the refrigeration equipment is blocked at the valve and cannot leak;

[0086] 6. Rotate the disassembly cap assembly 6 counterclockwise to completely remove the disassembly cap assembly 6 and the disassembly shaft, the elastic member 2, and the valve core 7 from the pipeline assembly 3;

[0087] 7. Replace the valve core 7 on the disassembly shaft 1, and re-rotate the disassembly shaft 1 assembly onto the pipeline assembly 3;

[0088] 8. Open ball valve 4;

[0089] 9. Press down the operating member 5 to make the disassembly shaft, elastic member 2, and valve core 7 reach the refrigerant interface of the refrigeration equipment;

[0090] 10. Rotate the knob (operating part 5) clockwise to install the valve core 7 into the refrigerant interface of the refrigeration equipment;

[0091] 11. Rotate the pipeline assembly 3 counterclockwise, remove the refrigeration equipment valve core 7 disassembly tool from the refrigerant interface of the refrigeration equipment, and the work is completed.

[0092] After the valve core 7 is removed, operations such as adding refrigerant can also be performed.

[0093] The beneficial effects of the refrigeration equipment valve core 7 disassembly and assembly assembly of the first embodiment of the utility model are: the refrigeration equipment valve core 7 disassembly and assembly assembly is used to rotate and fix the valve core 7, and the refrigeration equipment valve core 7 disassembly and assembly assembly can be composed of only two parts, the disassembly and assembly shaft 1 and the elastic member 2, and the disassembly and assembly shaft 1 and the elastic member 2 are clamped. Compared with the split pin shaft structure composed of a pull rod, a disassembly head, a pin shaft, and a clamping core rubber ring, it has the following advantages: 1. There will be no disassembly problem caused by pin shaft failure, 2. The number of parts is smaller, and 3. Assembly is easier; compared with the direct integrated structure, it has the following advantages: 1. The processing accuracy requirement is low, and the valve core 7 will not be unusable due to displacement; 2. The operation is relatively labor-saving; the unique clamping structure of the elastic member 2 and the disassembly shaft can effectively prevent the elastic member 2 from separating from the disassembly shaft.

[0094] The beneficial effect of the tool for disassembling and assembling the valve core 7 of the refrigeration equipment of the first embodiment of the utility model is to prevent or reduce the leakage of the refrigerant during disassembly.

[0095] In other embodiments, the elastic member can be installed in the disassembly shaft by means of snap-fitting and bonding, or one or more combinations of other methods such as bonding, interference fit, and threaded connection.

[0096] In other embodiments, the elastic member may be anti-detachment connected to the valve core by a snap-fitting manner, such as forming a T-shaped anti-detachment groove in the elastic member.

[0097] Embodiment 2

[0098] See also Figures 8 to 11 The disassembly assembly of the second embodiment of the utility model is different from the first embodiment in the connection structure between the elastic member 2 and the disassembly shaft 1.

[0099] In this embodiment, the elastic member 2 and the disassembly and assembly shaft 1 also use a clamping structure, but the specific clamping structure is different. In this embodiment, a radially penetrating force groove 1 is formed on the disassembly and assembly shaft 1, and the force groove 1 extends axially in the direction away from the valve core 7 to form an extension wall, and a clamping block 16 is formed on the extension wall, and the cross-section of the clamping block 16 is roughly a right triangle. The disassembly and assembly shaft 1 also has a machined circular hole 13, and the diameter of the machined circular hole 13 is greater than the width of the force groove 1. The deformation anti-slip portion 21 of the elastic member 2 includes a columnar base adapted to the machined circular hole 13 and an anti-slip groove portion 25 formed by radially extending from the columnar base, and the anti-slip groove portion 25 has a triangular groove that cooperates with the clamping block 16 of the disassembly and assembly shaft 1.

[0100] In this embodiment, the structure of the elastic member 2 connected to the valve core 7 is the same as that in the first embodiment.

[0101] Embodiment 3

[0102] See also Fig.12 and Fig.13 The disassembly assembly of the third embodiment of the present invention is different from the first embodiment in the connection structure between the elastic member 2 and the disassembly shaft 1.

[0103] In this embodiment, the elastic member 2 is tightly matched with the disassembly shaft 1. To install the elastic member 2, only a circular hole is needed to be processed at the end of the disassembly shaft 1 where the valve core 7 is located. The elastic member 2 has only a columnar base 21 (with a deformation groove 24), and the processing of the elastic member 2 and the disassembly shaft 1 is easier than in other embodiments.

[0104] In this embodiment, the structure of the elastic member 2 connecting the valve core 7 is the same as that in the first embodiment.

[0105] Embodiment 4

[0106] See also Fig.14 and Fig.15 The disassembly and assembly components of the fourth embodiment of the utility model are different from the first embodiment in the structure of the elastic member 2 connected to the valve core 7.

[0107] In this embodiment, the elastic member 2 is provided with a clamping groove 26 that cooperates with the valve core 7 (the cylindrical portion of the T-shaped movable rod), and the clamping groove 26 can be one or multiple clamping grooves distributed along the axial direction. In this embodiment, there are two clamping grooves 26. The clamping groove 26 includes a constricted section 261, an arc section 262, and a radial section 263, and the constricted section 261 is larger at one end close to the valve core 7 than at one end away from the valve core 7.

[0108] In this embodiment, the clamping structure between the elastic member 2 and the disassembly shaft 1 is the same as that in the first embodiment.

[0109] The above is only a specific implementation of the invention, but the protection scope of the invention is not limited thereto. Those skilled in the art should understand that the invention includes but is not limited to the contents described in the above specific implementation. Any modification that does not deviate from the functional and structural principles of the invention will be included in the scope of the claims.

Claims

1. A refrigeration equipment valve core disassembly and assembly assembly, the valve core (7) comprising a rotating force-bearing portion and a movable rod, characterized in that: The refrigeration equipment valve core disassembly and assembly assembly comprises: A disassembly shaft (1), the disassembly shaft (1) comprising a pull rod portion (10), a first end of the pull rod portion (10) being provided with a force application groove (11) which is clearance-matched with a rotating force-bearing portion of a valve core (7); An elastic member (2), the elastic member (2) forming a deformation-preventing portion (21) cooperating with a movable rod of a valve core (7), the elastic member (2) being farther away from the valve core (7) than the force-applying groove (11); Wherein, the elastic member (2) is installed on the first end of the pull-out rod portion (10) of the disassembly shaft (1).

2. The refrigeration equipment valve core disassembly and assembly assembly according to claim 1, characterized in that: The elastic member (2) is mounted on the first end of the disassembly shaft (1) by one or a combination of the following methods: snap connection, bonding, tight fit, or threaded connection; The deformation anti-slip portion (21) is formed with a deformation groove (24) which is interference-fitted with the movable rod of the valve core (7), or the deformation anti-slip portion (21) is formed with a clamping groove (26) which is clamped with the movable rod of the valve core (7).

3. The refrigeration equipment valve core disassembly and assembly assembly according to claim 2, characterized in that: The elastic member (2) is clamped to the first end of the disassembly and assembly shaft (1), and a radial clamping hole (12) is provided on an extended wall formed by axially extending the side wall of the force-applying groove (11) of the disassembly and assembly shaft (1), and the elastic member (2) has a clamping block (22) adapted to the clamping hole (12).

4. The refrigeration equipment valve core disassembly and assembly assembly according to claim 3, characterized in that: There are two clamping holes (12) and they are respectively located on two side walls of the force application groove (11); there are two clamping blocks (22) and they are respectively clamped in the two clamping holes (12); The elastic member (2) is clamped on the first end of the disassembly shaft (1), and the clamping hole (12) radially penetrates the side wall of the force-applying groove (11); the force-applying groove (11) of the disassembly shaft (1) is in a straight line shape; the force-applying groove (11) of the disassembly shaft (1) is radially penetrated.

5. The refrigeration equipment valve core disassembly and assembly assembly according to claim 2, characterized in that: The elastic member (2) is clamped on the first end of the disassembly and assembly shaft (1); the extended wall formed by the axial extension of the side wall of the force-applying groove (11) of the disassembly and assembly shaft (1) forms a clamping block (16); the cross-section of the clamping block (16) is roughly a right-angled triangle; the deformation anti-slip portion (21) of the elastic member (2) comprises a columnar base and an anti-slip groove portion (25) formed by radially extending from the columnar base and cooperating with the clamping block (16).

6. The refrigeration equipment valve core disassembly and assembly assembly according to claim 2, characterized in that: A machining circular hole (13) is provided at the first end of the disassembly and assembly shaft (1), the inner end of the machining circular hole (13) is conical, the depth of the machining circular hole (13) is greater than the length of the force-applying groove (11), the deformation anti-slip portion (21) is cylindrical and is adapted to the machining circular hole (13), and the diameter of the machining circular hole (13) is greater than the width of the force-applying groove (11).

7. The refrigeration equipment valve core disassembly and assembly assembly according to claim 2, characterized in that: One or more axially distributed clamping grooves (26) are formed on the deformation anti-slip portion (21) and are clamped with the movable rod of the valve core (7). The clamping grooves (26) include a constricted section (261), an arc section (262) and a radial section (263).

8. The refrigeration equipment valve core disassembly and assembly assembly according to claim 1, characterized in that: The elastic member (2) forms a guide portion (23) adapted to the force application groove (11); A deformation groove (24) is formed on the deformation anti-slip portion (21) and is interference-fitted with a movable rod of the valve core (7), and the outer end of the deformation groove (24) is chamfered; The first end of the disassembly shaft (1) forms an annular anti-slip convex portion (15), and the anti-slip convex portion (15) is axially staggered from the deformation groove (24); The disassembly shaft (1) is integrally formed.

9. Refrigeration equipment valve core disassembly and assembly tool, characterized by: The refrigeration equipment valve core disassembly and assembly tool comprises the refrigeration equipment valve core disassembly and assembly component according to any one of claims 1 to 8.

10. The refrigeration equipment valve core disassembly and assembly tool according to claim 9, characterized in that: The disassembly shaft (1) is integrally formed; The refrigeration equipment valve core disassembly and assembly tool also includes: A pipeline assembly (3), the pipeline assembly (3) having a pipeline passage for the disassembly shaft (1) to enter and exit, the first end of the pipeline assembly (3) having an internal thread having a diameter greater than that of the disassembly shaft (1), and the second end of the pipeline assembly (3) having an external thread; A ball valve (4), the ball valve (4) opens and closes the pipeline channel; An operating member (5), the operating member (5) being fixedly connected to the second end of the disassembly and assembly shaft (1), and the operating member (5) being located outside the pipeline channel; A disassembly cap assembly (6), the disassembly cap assembly (6) comprising a threaded cap (61) threadedly connected to the external thread of the pipeline assembly (3), an anti-slip ring (62) and a sealing ring (63) installed in the threaded cap (61); The first end of the disassembly shaft (1) forms an annular anti-slip convex portion (15), the anti-slip convex portion (15) is axially offset from the deformation groove (24), and the anti-slip ring (62) and the anti-slip convex portion (15) cooperate to prevent the disassembly shaft (1) and the disassembly cap assembly (6) from separating.

Images