Cavitation-preventing connecting structure of liquid-ring vacuum pump

Abstract

The utility model discloses an anti-cavitation connecting structure of a liquid ring vacuum pump, and relates to the technical field of liquid ring vacuum pumps. The internal pipe comprises a main pipe body and an internal pipe positioned in the main pipe body, rotating blocks are arranged at the two ends of the main pipe body, U-shaped plates rotationally connected with the rotating blocks in a sleeving mode are arranged on the end faces, opposite to the main pipe body, of the rotating blocks, symmetrical tooth openings are formed in the middles of the two end faces of the rotating blocks, and tooth plates are arranged in the tooth openings in a meshed mode; rotating pipes are fixed to the opposite end faces of the two rotating blocks, and T-shaped ring plates rotationally matched with the T-shaped ring openings are fixed to the other end faces of the rotating pipes. Through rotary connection of the U-shaped plate and the rotary block and rotary matching use of the T-shaped ring plate and the T-shaped ring opening, angle position adjustment can be carried out according to installation requirements, meanwhile, the toothed plate is meshed with the toothed opening, stability of angle adjustment of the U-shaped block is guaranteed, and rotary movement of the U-shaped plate and the rotary block is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field related to liquid ring vacuum pumps, and particularly relates to an anti-cavitation connection structure of a liquid ring vacuum pump. Background Art

[0002] Liquid ring vacuum pump is a roughing pump that uses liquid as working medium. The one that uses water as working medium is called water ring vacuum pump, and others can use oil, sulfuric acid and acetic acid as working medium. Water ring vacuum pumps are mostly used in industry, so in order to ensure the normal use of liquid ring vacuum pumps, it is generally necessary to use an anti-cavitation connection structure, so as to connect the liquid ring vacuum pump with external equipment through the connection structure.

[0003] However, the existing connection structure cannot be used to adapt the connection structure to different installation environments because it does not have the function of adjusting the angle of the two ports of the connection structure when in use, and thus it is not convenient to connect the liquid ring vacuum pump with external equipment. At the same time, the existing connection structure cannot be used to stabilize the position of the rotating structure used by it, so the connection structure is prone to multi-angle rotation, which makes the connection structure prone to damage. To this end, we provide an anti-cavitation connection structure for a liquid ring vacuum pump to solve the above problems. Utility Model Content

[0004] The utility model aims to provide an anti-cavitation connection structure of a liquid ring vacuum pump, which can realize angle position adjustment according to installation requirements through the rotational connection of a U-shaped plate and a rotating block and the rotational cooperation of a T-shaped ring plate and a T-shaped ring mouth, while the meshing of a tooth plate and a tooth mouth ensures the stability of the angle adjustment of the U-shaped block, avoids the rotational movement of the U-shaped plate and the rotating block, and avoids structural damage.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is an anti-cavitation connection structure of a liquid ring vacuum pump, comprising a main body and an internal pipe located inside the main body; rotating blocks are arranged at both ends of the main body, and the end faces of the rotating blocks opposite to the main body are arranged with U-shaped plates rotatably sleeved therewith, the middle parts of the two end faces of the rotating blocks are provided with symmetrical tooth openings, the insides of the tooth openings are meshed with tooth plates, and the inner side faces of the U-shaped plates are provided with receiving openings of the same size as the tooth plates at positions corresponding to the tooth plates, the two end portions of the internal pipe are fixed with bellows, the two end faces of the main body are fixed with assembly pipes connected with the inside thereof, the end faces of the assembly pipes opposite to the main body are provided with T-shaped ring openings, the opposite end faces of the two rotating blocks are fixed with rotating pipes, and the other end faces of the rotating pipes are fixed with T-shaped ring plates rotatably matched with the T-shaped ring openings.

[0007] The utility model is further configured that a connecting pipe is fixed to the end face of the U-shaped plate opposite to the rotating block, and the interior of the connecting pipe is connected to the interior of the U-shaped plate, the other end face of the connecting pipe is provided with a recess, and the end face of the rotating pipe is provided with a through hole that penetrates the circumference of the rotating block.

[0008] The utility model is further configured such that a positioning ring plate is fixed to the other end surface of the bellows, and the two positioning ring plates are respectively rotatably arranged at the inner positions of the recesses.

[0009] The utility model is further configured that round blocks are fixed at the middle of both end surfaces outside the two U-shaped plates, and movable openings are opened inside the round blocks.

[0010] The utility model is further configured such that the middle of the inner end surface of the receiving port is connected with the inside of the moving port through a through hole, and the middle of the end surface of the round block opposite to the U-shaped plate is provided with a pulling hole connected with the inside of the moving port.

[0011] The utility model is further configured such that the end faces of the toothed plates are fixed with pull rods that slide through the inner position of the through holes, the other end faces of the pull rods are fixed with positioning plates that are slidably arranged in the inner position of the moving opening, and the positioning plates are connected to the end faces of the U-shaped plates.

[0012] The utility model is further configured that a moving rod sliding through the inner position of the pulling hole is fixed to the other end surface of the positioning plate, and a pulling plate connected to the end surface of the round block is fixed to the other end surface of the moving rod.

[0013] The utility model is further configured such that the end face of the positioning plate is provided with four positioning holes evenly distributed in a ring shape, the inner end face of the moving mouth is fixed with a positioning rod slidably inserted in the inner position of the positioning hole, the end face of the positioning plate is fixed with a spring slidably sleeved on the circumferential side of the moving rod, and the spring abuts against the inner end face of the moving mouth.

[0014] The utility model has the following beneficial effects:

[0015] 1. When the utility model is in use, the tooth plate is moved out of the tooth mouth, so that the U-shaped plate and the rotating block can rotate. Therefore, the angle between the U-shaped plate and the rotating block is controlled at this time. When the entire rotating block and the U-shaped plate are rotated at the same time, the rotating block can be directly rotated, so that the rotating block will drive the T-shaped ring plate to rotate inside the T-shaped ring mouth, so that the angle position can be adjusted according to the installation requirements.

[0016] 2. When the utility model is in use, in order to control the assembly stability of the U-shaped plate and prevent the U-shaped plate from rotating, the tooth plate can be reinserted into the tooth mouth. At the same time, the tooth plate and the U-shaped plate cannot rotate alternately. Therefore, the tooth plate will limit the rotating block, making it impossible for the U-shaped plate and the rotating block to rotate, thereby ensuring the stability of the angle adjustment of the U-shaped block and preventing the rotation of the U-shaped plate and the rotating block.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 The figure is a schematic diagram of the structure of an anti-cavitation connection structure of a liquid ring vacuum pump.

[0020] Figure 2 It is an assembly drawing of the transfer block, U-shaped plate and tooth plate of the utility model.

[0021] Figure 3 It is a structural diagram of the built-in pipe in the utility model.

[0022] Figure 4 It is a structural diagram of the main pipe body in the utility model.

[0023] Figure 5 It is the structural diagram of the transfer block of the utility model.

[0024] Figure 6 It is a structural diagram of the tooth plate in the utility model.

[0025] Figure 7 It is a cross-sectional structural diagram of the U-shaped plate in the utility model.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1-main body, 101-assembly tube, 102-T-shaped ring mouth, 2-rotating block, 201-rotating tube, 202-tooth mouth, 203-T-shaped ring plate, 204-through hole, 3-U-shaped plate, 301-connecting tube, 302-notch, 303-round block, 304-pull hole, 305-moving mouth, 306-through hole, 307-positioning rod, 308-storage mouth, 4-built-in tube, 401-corrugated tube, 402-positioning ring plate, 5-tooth plate, 501-pull plate, 502-pull rod, 503-positioning plate, 504-positioning hole, 505-moving rod, 506-spring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1

[0030] See also Figure 1-Figure 7 The utility model is an anti-cavitation connection structure of a liquid ring vacuum pump. Through the rotational connection between the U-shaped plate 3 and the rotating block 2 and the rotational coordination between the T-shaped ring plate 203 and the T-shaped ring mouth 102, the angle position can be adjusted according to the installation requirements. At the same time, the engagement between the tooth plate 5 and the tooth mouth 202 ensures the stability of the angle adjustment of the U-shaped block and avoids the rotation of the U-shaped plate 3 and the rotating block 2.

[0031] Specifically, a main body 1 and an internal tube 4 located inside the main body 1; a rotating block 2 is provided at both ends of the main body 1, and a U-shaped plate 3 rotatably sleeved thereon is provided on the end face of the rotating block 2 opposite to the main body 1, symmetrical tooth openings 202 are provided in the middle of the two end faces of the rotating block 2, and tooth plates 5 are meshed inside the tooth openings 202, and receiving openings 308 of the same size as the tooth plates 5 are provided on the inner side surface of the U-shaped plate 3 corresponding to the position of the tooth plate 5, and bellows 401 are fixed at both ends of the internal tube 4, and an assembly tube 101 connected to the inside is fixed on both end faces of the main body 1, and a T-shaped ring opening 102 is provided on the end face of the assembly tube 101 opposite to the main body 1, and a rotating tube 201 is fixed on the opposite end faces of the two rotating blocks 2, and a T-shaped ring plate 203 rotatably matched with the T-shaped ring opening 102 is fixed on the other end face of the rotating tube 201.

[0032] The operation process of this embodiment is as follows: through the setting and use of the above-mentioned structure, when the angle of the U-shaped plate 3 needs to be adjusted, the tooth plate 5 can be moved out of the tooth opening 202, so that the U-shaped plate 3 and the rotating block 2 can be rotated. Therefore, at this time, the angle between the U-shaped plate 3 and the rotating block 2 is controlled, and when the entire rotating block 2 and the U-shaped plate 3 are rotated, the rotating block 2 can be directly rotated, so that the rotating block 2 will drive the T-shaped ring plate 203 to rotate inside the T-shaped ring opening 102, so as to achieve the angle position adjustment according to the installation requirements. At the same time, in order to control the assembly stability of the U-shaped plate 3 and prevent the U-shaped plate 3 from rotating, the tooth plate 5 can be reinserted into the tooth opening 202. At the same time, the tooth plate 5 and the U-shaped plate 3 cannot rotate alternately, so the tooth plate 5 will limit the rotating block 2, so that the U-shaped plate 3 and the rotating block 2 cannot rotate, thereby ensuring the stability of the angle adjustment of the U-shaped block. Specific embodiment 2

[0034] See also Figure 3 and Figure 7 On the basis of the first specific embodiment, the positioning ring plate 402 is located inside the recess 302 to ensure the stability of the installation and assembly of the built-in tube 4.

[0035] Specifically, a connecting pipe 301 is fixed to the end face of the U-shaped plate 3 opposite to the rotating block 2, and the interior of the connecting pipe 301 is connected to the interior of the U-shaped plate 3, a recess 302 is provided on the other end face of the connecting pipe 301, a through hole 204 penetrating the circumference of the rotating block 2 is provided on the end face of the rotating tube 201, a positioning ring plate 402 is fixed to the other end face of the bellows 401, and the two positioning ring plates 402 are respectively rotatably set in the internal positions of the recess 302.

[0036] The operation process of this embodiment is: by positioning the ring plate 402 in the internal position of the recess 302, the two ends of the built-in tube 4 are limited to ensure that the built-in tube 4 will not fall out of the main body 1, and by using the connecting pipe 301, the U-shaped plate 3 can be easily connected to the port position of the vacuum pump. Specific embodiment three

[0038] Please refer to the figure Figure 2 , Figure 6 and Figure 7 On the basis of the specific embodiment 1, the tooth plate 5 is driven to move by the pull plate 501, so as to facilitate the control of the tooth plate 5.

[0039] Specifically, round blocks 303 are fixed in the middle of the two end surfaces on the outside of the two U-shaped plates 3, and movable openings 305 are opened inside the round blocks 303. The middle of the inner end surface of the storage opening 308 is connected with the inside of the movable opening 305 through the through hole 306 opened therein. The middle of the end surface of the round block 303 opposite to the U-shaped plate 3 is opened with a pulling hole 304 connected with the inside of the movable opening 305. The end surface of the tooth plate 5 is fixed with a pulling rod 502 that slides through the internal position of the through hole 306. The other end surface of the pulling rod 502 is fixed with a positioning plate 503 that is slidably set in the internal position of the movable opening 305, and the positioning plate 503 is connected to the end surface of the U-shaped plate 3. The other end surface of the positioning plate 503 is fixed with a moving rod 505 that slides through the internal position of the pulling hole 304, and the other end surface of the moving rod 505 is fixed with a pulling plate 501 connected with the end surface of the round block 303.

[0040] The operation process of this embodiment is: in order to facilitate the control of the tooth plate 5 to move out of the internal position of the tooth mouth 202, the user can directly control the pull plate 501 to move in the opposite direction of the round block 303, and then the pull plate 501 will control the moving rod 505 to move out inside the moving hole and the pulling hole 304, so that the moving rod 505 will drive the positioning plate 503 to move, and the positioning plate 503 will directly pull the tooth plate 5 in the internal position of the tooth mouth 202 to the storage port 308 through the pull rod 502, so that the tooth plate 5 can be quickly controlled. Specific embodiment 4

[0042] See also Figure 2 , Figure 6 and Figure 7 On the basis of the first specific embodiment, the spring 506 and the positioning rod 307 are used in combination to facilitate the resetting of the tooth plate 5 and prevent the tooth plate 5 from rotating.

[0043] Specifically, the end surface of the positioning plate 503 is provided with four positioning holes 504 evenly distributed in a ring shape, the inner end surface of the moving opening 305 is fixed with a positioning rod 307 slidably inserted in the internal position of the positioning hole 504, and the end surface of the positioning plate 503 is fixed with a spring 506 slidably sleeved on the circumferential side of the moving rod 505, and the spring 506 is in contact with the inner end surface of the moving opening 305.

[0044] The operation process of this embodiment is as follows: when the positioning plate 503 is driven by the moving rod 505, the positioning plate 503 will slide along the positioning rod 307 through the positioning hole 504, and the positioning rod 307 will limit the positioning plate 503 in the positioning hole 504 to prevent the positioning plate 503 from rotating inside the moving mouth 305. At the same time, the positioning plate 503 will compress the spring 506 when moving. Therefore, when the user releases the pull plate 501, the spring 506 at this time will push the positioning plate 503 to reset, so that the tooth plate 5 can be reset to the tooth mouth 202.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An anti-cavitation connection structure of a liquid ring vacuum pump, comprising a main pipe body (1) and an internal pipe (4) located inside the main pipe body (1); characterized in that: A rotating block (2) is disposed at both ends of the main pipe body (1); a U-shaped plate (3) rotatably sleeved therewith is disposed on the end surface of the rotating block (2) opposite to the main pipe body (1); symmetrical tooth openings (202) are provided in the middle of both end surfaces of the rotating block (2); a tooth plate (5) is meshedly disposed inside the tooth openings (202); and a receiving opening (308) having the same size as the tooth plate (5) is provided on the inner side surface of the U-shaped plate (3) at a position corresponding to the tooth plate (5). The two ends of the built-in tube (4) are fixed with bellows (401), the two end surfaces of the main tube (1) are fixed with assembly tubes (101) connected with the interior thereof, the end surface of the assembly tube (101) opposite to the main tube (1) is provided with a T-shaped ring opening (102), the opposite end surfaces of the two rotating blocks (2) are fixed with rotating tubes (201), and the other end surface of the rotating tube (201) is fixed with a T-shaped ring plate (203) rotatably matched with the T-shaped ring opening (102).

2. The anti-cavitation connection structure of a liquid ring vacuum pump according to claim 1, characterized in that: A connecting pipe (301) is fixed to the end surface of the U-shaped plate (3) opposite to the rotating block (2), and the interior of the connecting pipe (301) is connected to the interior of the U-shaped plate (3). A notch (302) is provided on the other end surface of the connecting pipe (301), and a through hole (204) penetrating the circumference of the rotating block (2) is provided on the end surface of the rotating tube (201).

3. The anti-cavitation connection structure of a liquid ring vacuum pump according to claim 2, characterized in that: A positioning ring plate (402) is fixed to the other end surface of the bellows (401), and the two positioning ring plates (402) are respectively rotatably arranged at the inner position of the recess (302).

4. The anti-cavitation connection structure of a liquid ring vacuum pump according to claim 1, characterized in that: Round blocks (303) are fixed in the middle of both end surfaces outside the two U-shaped plates (3), and movable openings (305) are opened inside the round blocks (303).

5. The anti-cavitation connection structure of a liquid ring vacuum pump according to claim 4, characterized in that: The middle part of the inner end surface of the receiving opening (308) is connected to the inside of the moving opening (305) through a through hole (306) provided therein, and the middle part of the end surface of the round block (303) opposite to the U-shaped plate (3) is provided with a pulling hole (304) connected to the inside of the moving opening (305).

6. The anti-cavitation connection structure of a liquid ring vacuum pump according to claim 5, characterized in that: The end faces of the toothed plates (5) are fixed with pull rods (502) that slide through the internal position of the through holes (306), and the other end faces of the pull rods (502) are fixed with positioning plates (503) that slide in the internal position of the moving opening (305), and the positioning plates (503) are connected to the end faces of the U-shaped plates (3).

7. The anti-cavitation connection structure of a liquid ring vacuum pump according to claim 6, characterized in that: The other end surface of the positioning plate (503) is fixed with a moving rod (505) that slides through the inner position of the pulling hole (304), and the other end surface of the moving rod (505) is fixed with a pulling plate (501) that is connected to the end surface of the round block (303).

8. The anti-cavitation connection structure of a liquid ring vacuum pump according to claim 7, characterized in that: The end surface of the positioning plate (503) is provided with four positioning holes (504) evenly distributed in a ring shape, the inner end surface of the moving opening (305) is fixed with a positioning rod (307) slidably inserted into the inner position of the positioning hole (504), and the end surface of the positioning plate (503) is fixed with a spring (506) slidably sleeved on the circumference of the moving rod (505), and the spring (506) is in contact with the inner end surface of the moving opening (305).

Images