High and low temperature circulation all-in-one machine with good safety

Abstract

The utility model relates to the technical field of circulation all-in-one machines, in particular to a high-low temperature circulation all-in-one machine with good safety, which comprises a body, a liquid circulation port is arranged on the left side of the body, the left side of the liquid circulation port is connected with an external connecting pipe, and an outer sealing ring is rotatably mounted on the liquid circulation port; the sliding shaft slides in the axial direction of the liquid flowing opening, the sliding shaft drives the clamping blocks to expand outwards in the radial direction, so that the clamping blocks abut against the inner wall of the external connecting pipe, the external connecting pipe makes close contact with the outer sealing ring, and therefore the sealing performance of the pipe opening is improved; therefore, the outer sealing ring and the sliding shaft are further fixed, the sealing performance is prevented from being affected by sliding at the connecting position when equipment vibrates, the stability of a pipe connector is improved, the safety of the equipment is improved, and the situation that liquid leaks and hurts workers when the high-low temperature circulation all-in-one machine cyclically debugs the temperature is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of integrated circulation machines, in particular to a high and low temperature integrated circulation machine with good safety. Background Art

[0002] The high and low temperature all-in-one machine is a laboratory instrument with both rapid cooling and heating functions. The entire system adopts a fully closed cycle, which will not produce oil mist at high temperatures and will not absorb moisture at low temperatures. It can accurately and linearly control the temperature of the material in the kettle, and can select the program control mode. The temperature difference between the heat transfer medium and the material can also be set. It can also be used alone for heating and cooling other equipment.

[0003] The utility model with application number 202321757407.X discloses a protective device for a high and low temperature integrated circulation machine, which fixes the hose by the pressure exerted by the compression spring on the inner ring. However, in actual situations, the compression spring will deform when subjected to a small force, and the hose will swing when subjected to a small force, which offsets the force exerted by the compression spring, causing the hose launch tube to swing, resulting in poor fixing effect on the hose and unsatisfactory fixing effect on the pipe mouth; the utility model with application number 202321315701.5 discloses an interface assembly structure for the circulation pipeline of a high and low temperature integrated machine. Since the equipment is susceptible to vibration, the extrusion plate in the structure is deformed by the extrusion of multiple circular blocks, and the fixing effect on the circular blocks becomes poor, affecting the sealing of the pipe interface. Therefore, the pipe interface needs to be redesigned. Utility Model Content

[0004] The utility model aims to provide a high and low temperature circulation integrated machine with good safety, which can realize double clamping and fixing of the pipe interface to prevent the pipe interface from vibrating and falling off or detaching when the equipment vibrates, thereby affecting the sealing of the pipe interface.

[0005] The utility model adopts the following technical scheme: the high and low temperature circulation integrated machine with good safety comprises a main body, a liquid circulation port is arranged on the left side of the main body, an external connecting pipe is connected to the left side of the liquid circulation port, an outer sealing ring is rotatably installed on the liquid circulation port, a clamping device for clamping the external connecting pipe is slidably installed in the outer sealing ring, the clamping device comprises a sliding shaft slidably installed in the outer sealing ring, a plurality of clamping blocks are rotatably installed on the sliding shaft, the outer end portion of the clamping block is in abutment with the inside of the external connecting pipe, a first threaded hole is arranged at the part of the outer sealing ring in contact with the liquid circulation port, a first threaded layer is arranged at the part of the liquid circulation port in contact with the outer sealing ring, a second threaded hole is arranged at the part of the outer sealing ring in contact with the sliding shaft, and a second threaded layer is arranged at the part of the sliding shaft in contact with the outer sealing ring.

[0006] A further solution of the utility model is that a polygonal hole is opened in the liquid flow port tube, and a polygonal connecting shaft is arranged on the right side of the sliding shaft, and the shape of the polygonal connecting shaft is adapted to the shape of the polygonal hole.

[0007] A further solution of the utility model is that an elastic member is installed on the surface of the clamping block facing the sliding shaft, a plurality of connecting grooves are provided on the circumference of the sliding shaft, the clamping block is rotatably installed in the connecting groove, and the other end of the elastic member is connected to the sliding shaft.

[0008] A further solution of the utility model is that an external connecting tube is provided on the main body, an anti-friction bearing is rotatably mounted on the external connecting tube, an inner ring surface of the anti-friction bearing is provided with a smooth layer with an arc transition, and the anti-friction bearing is in close contact with the external connecting tube.

[0009] A further solution of the utility model is that the first threaded hole is adapted to the first threaded layer, the second threaded hole is adapted to the second threaded layer, the first threaded hole and the second threaded hole have opposite rotation directions, and the first threaded layer and the second threaded layer have opposite rotation directions.

[0010] A further solution of the utility model is that the pitch of the first threaded hole is smaller than the pitch of the second threaded hole.

[0011] Beneficial effects of the utility model:

[0012] The sliding shaft slides along the axial direction of the liquid flow port, and the sliding shaft drives the clamping block to open radially outward, thereby contacting the inner wall of the external connecting pipe, and making the external connecting pipe in close contact with the outer sealing ring, thereby improving the sealing of the pipe mouth. When the equipment is subjected to external vibration, since the rotation directions of the first threaded hole and the second threaded hole are opposite, the outer sealing ring and the sliding shaft are further fixed to avoid sliding of the connection when the equipment vibrates to affect the sealing, thereby improving the stability of the pipe interface, improving the safety of the equipment, and avoiding liquid leakage and harm to workers when the high and low temperature circulation integrated machine is circulating and debugging the temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the overall structure diagram of the utility model;

[0014] Figure 2 This is the second structural diagram of the utility model;

[0015] Figure 3 This is an exploded structural diagram of the sliding shaft portion of the utility model;

[0016] Figure 4 This is an exploded structural diagram of the external connecting pipe of the utility model;

[0017] Figure 5This is a structural diagram of the outer sealing ring of the utility model;

[0018] Figure 6 This is a cross-sectional structural diagram of the installation of the liquid flow port of the utility model.

[0019] Figure numerals: 1. main body; 11. liquid flow port; 12. first threaded layer; 13. polygonal hole; 14. external connecting pipe; 141. anti-friction bearing; 2. external connecting pipe; 3. external sealing ring; 31. first threaded hole; 32. second threaded hole; 4. sliding shaft; 401. connecting groove; 41. clamping block; 42. second threaded layer; 43. polygonal connecting shaft; 44. elastic member. DETAILED DESCRIPTION

[0020] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0021] Reference Figure 1-6 The utility model discloses a high and low temperature circulation integrated machine with good safety, comprising: a main body 1, a liquid circulation port 11 is arranged on the left side of the main body 1, an external connecting pipe 2 is connected to the left side of the liquid circulation port 11, the external connecting pipe 2 can be connected to the liquid circulation port 11, an outer sealing ring 3 is rotatably installed on the liquid circulation port 11, a clamping device for clamping the external connecting pipe 2 is slidably installed in the outer sealing ring 3, the clamping device comprises a sliding shaft 4 slidably installed in the outer sealing ring 3, the interior of the outer sealing ring 3 is a stepped hole, the diameter of the sliding shaft 4 is smaller than the diameter of the external connecting pipe 2, and the sliding shaft 4 is rotatably mounted with a plurality of clamping blocks 41, the outer end of the clamping block 41 is in contact with the inside of the external connecting pipe 2, the portion of the outer sealing ring 3 in contact with the liquid circulation port 11 is provided with a first threaded hole 31, the portion of the liquid circulation port 11 in contact with the outer sealing ring 3 is provided with a first threaded layer 12, the portion of the outer sealing ring 3 in contact with the sliding shaft 4 is provided with a second threaded hole 32, the portion of the sliding shaft 4 in contact with the outer sealing ring 3 is provided with a second threaded layer 42, the first threaded hole 31 and the second threaded hole 32 have opposite rotation directions, and the first threaded layer 12 and the second threaded layer 42 have opposite rotation directions;

[0022] When the outer sealing ring 3 is rotated in the counterclockwise direction, the outer sealing ring 3 is rotated to the left relative to the liquid circulation port 11. The sliding shaft 4 will not rotate synchronously with the outer sealing ring 3. At the same time, the two are threadedly connected, and the rotation direction of the threads is opposite. The sliding shaft 4 slides along the axial direction of the liquid circulation port 11, and the sliding shaft 4 drives the clamping block 41 to open radially outward, thereby contacting the inner wall of the external connecting pipe 2, and the external connecting pipe 2 is in close contact with the outer sealing ring 3, thereby improving the sealing of the pipe mouth. When the equipment is vibrated by external force, since the rotation directions of the first threaded hole 31 and the second threaded hole 32 are opposite, the outer sealing ring 3 and the sliding shaft 4 are further fixed to avoid sliding of the connection when the equipment vibrates and affecting the sealing, thereby improving the stability of the pipe interface, improving the safety of the equipment, and avoiding liquid leakage during the circulation and debugging of the high and low temperature circulation integrated machine to cause harm to workers.

[0023] A polygonal hole 13 is provided in the liquid flow port 11, and a polygonal connecting shaft 43 is provided on the right side of the sliding shaft 4. The shape of the polygonal connecting shaft 43 is adapted to the shape of the polygonal hole 13. When the sliding shaft 4 rotates counterclockwise in the outer sealing ring 3, due to the threaded connection with the outer sealing ring 3, the sliding shaft 4 slides to the right under the action of the polygonal connecting shaft 43 and the polygonal hole 13.

[0024] An elastic member 44 is installed on the side of the clamping block 41 facing the sliding shaft 4, and a plurality of connecting grooves 401 are provided on the circumference of the sliding shaft 4. The clamping block 41 is rotatably installed in the connecting groove 401, and the other end of the elastic member 44 is connected to the sliding shaft 4. When the outer sealing ring 3 rotates counterclockwise to clamp the external connecting tube 2, the outer sealing ring 3 rotates to the left, driving the sliding shaft 4 to move along the axial direction of the polygonal hole 13, and the sliding shaft 4 pulls the clamping block 41 to open outward, thereby contacting the inner wall of the external connecting tube 2, and bringing the external connecting tube 2 close to the inner wall of the outer sealing tube 3, thereby ensuring the sealing of the device; when the outer sealing ring 3 rotates clockwise to disassemble the external connecting tube 2, the outer sealing ring slides to the right side, driving the sliding shaft 4 to move along the axial direction of the polygonal hole 13, and the sliding shaft 4 pulls the clamping block 41 to shrink inward, thereby releasing the contact with the inner wall of the external connecting tube 2, thereby directly disassembling the external connecting tube 2.

[0025] An external connecting tube 14 is provided on the main body 1, and an anti-friction bearing 141 is rotatably installed on the external connecting tube 14. The inner ring surface of the anti-friction bearing 141 is provided with a smooth layer with an arc transition. The anti-friction bearing 141 is in close contact with the external connecting tube 2, which facilitates the swing of the external connecting tube 2 during the vibration of the equipment and avoids the wear of the external connecting tube 2 and the equipment during the swinging process, thereby affecting the life of the external connecting tube 2.

[0026] It should be specially noted that the first threaded hole 31 is adapted to the first threaded layer 12, the second threaded hole 32 is adapted to the second threaded layer 42, the pitch of the first threaded hole 31 is smaller than the pitch of the second threaded hole 32, and when the outer sealing ring 3 rotates, the moving distance of the sliding shaft 4 is greater than the moving distance of the outer sealing ring 3, thereby facilitating improving the resistance effect of the clamping block 41 on the external connecting pipe 2.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] The above description is only for illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various variations that conform to the concept of the present invention are within the protection scope of the present invention.

Claims

1. A high and low temperature cycle integrated machine with good safety, characterized by: The invention comprises a body (1), a liquid circulation port (11) is arranged on the left side of the body (1), an external connection pipe (2) is connected to the left side of the liquid circulation port (11), an outer sealing ring (3) is rotatably mounted on the liquid circulation port (11), a clamping device for clamping the external connection pipe (2) is slidably mounted inside the outer sealing ring (3), the clamping device comprises a sliding shaft (4) slidably mounted inside the outer sealing ring (3), a plurality of clamping blocks (41) are rotatably mounted on the sliding shaft (4), and the clamping device is used to clamp the external connection pipe (2). The outer end of the tightening block (41) is in contact with the inside of the external connecting pipe (2); the portion of the outer sealing ring (3) in contact with the liquid circulation port (11) is provided with a first threaded hole (31); the portion of the liquid circulation port (11) in contact with the outer sealing ring (3) is provided with a first threaded layer (12); the portion of the outer sealing ring (3) in contact with the sliding shaft (4) is provided with a second threaded hole (32); the portion of the sliding shaft (4) in contact with the outer sealing ring (3) is provided with a second threaded layer (42).

2. A high and low temperature cycle integrated machine with good safety according to claim 1, characterized in that: A polygonal hole (13) is provided in the liquid circulation port (11), and a polygonal connecting shaft (43) is provided on the right side of the sliding shaft (4), wherein the shape of the polygonal connecting shaft (43) matches the shape of the polygonal hole (13).

3. A high and low temperature cycle integrated machine with good safety according to claim 2, characterized in that: An elastic member (44) is installed on the surface of the clamping block (41) facing the sliding shaft (4); a plurality of connecting grooves (401) are provided on the circumference of the sliding shaft (4); the clamping block (41) is rotatably installed in the connecting grooves (401); and the other end of the elastic member (44) is connected to the sliding shaft (4).

4. A high and low temperature cycle integrated machine with good safety according to claim 3, characterized in that: The body (1) is provided with an external connection tube (14), an anti-friction bearing (141) is rotatably mounted on the external connection tube (14), the inner ring surface of the anti-friction bearing (141) is provided with a smooth layer with an arc transition, and the anti-friction bearing (141) is in close contact with the external connection tube (2).

5. The high and low temperature cycle integrated machine with good safety according to claim 1, characterized in that: The first threaded hole (31) is adapted to the first threaded layer (12), the second threaded hole (32) is adapted to the second threaded layer (42), the first threaded hole (31) and the second threaded hole (32) have opposite rotation directions, and the first threaded layer (12) and the second threaded layer (42) have opposite rotation directions.

6. A high and low temperature cycle integrated machine with good safety according to claim 5, characterized in that: The pitch of the first threaded hole (31) is smaller than the pitch of the second threaded hole (32).

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