A filter membrane mounting structure for a screw compressor

Abstract

This utility model belongs to the field of screw compressor accessory installation technology, and particularly relates to a filter membrane installation structure for a screw compressor, including: a screw compressor body, a fixing ring seat, a mounting ring, an elastic element, and a quick-release element; the screw compressor body is provided with an air inlet; the fixing ring seat is disposed on the side wall of the screw compressor body and located at the air inlet, the inner ring of the fixing ring seat can position the filter membrane, the inner wall of the fixing ring seat is provided with a connecting groove, the connecting groove penetrates the end face of the fixing ring seat, and the arc surface of the arc groove is provided with a retaining groove; installation... The mounting ring can enter the inner ring of the fixed ring seat. The mounting ring is provided with a locking block, which is slidably disposed on the mounting ring along the radial direction of the mounting ring. The locking block can enter the connecting groove and the locking slot. When the locking block is on the arc surface of the arc groove, the mounting ring abuts against the filter membrane. An elastic element is disposed between the mounting ring and the locking block. When the locking block is on the arc surface of the arc groove, the elastic element is squeezed. A quick-release element can remove the locking block from the locking slot. Compared with the prior art, the filter membrane mounting structure of this utility model is easy to quickly assemble and disassemble and has a simple structure. It relies entirely on the mechanical structure and is reliable in installation.

Description

Technical Field

[0001] This utility model belongs to the field of screw compressor accessory installation technology, and particularly relates to a filter membrane installation structure for a screw compressor. Background Technology

[0002] A screw compressor is a positive displacement gas compression machine with a rotating working volume. Gas compression is achieved by changes in volume, which in turn is achieved by the rotating motion of a pair of rotors within the compressor casing. When a screw compressor is working, it needs to draw in air from the outside. The air passes through a filter membrane at the air inlet, then through an air filter to remove dust, before being compressed.

[0003] During operation, screw compressors often experience filter membrane clogging due to impurities, necessitating periodic filter membrane replacement. Utility model patent CN220470217U discloses a screw air compressor with an easy filter membrane replacement mechanism. This technology utilizes an electromagnet, magnetic plate, telescopic column, spring, movable plate, limiting rod, and limiting hole. During filter membrane replacement, the energized electromagnet, attracted by the magnetic plate, moves the movable plate, causing the limiting rod to separate from the limiting hole, thus releasing the filter membrane from its fixation. After replacement, the electromagnet is de-energized, and the telescopic column and spring automatically reset the components. While this technology allows for rapid filter membrane replacement, the process relies on the electromagnet's energization. This requires a dedicated power supply for the electromagnet and control over its operation. Furthermore, checking for electromagnet malfunction is necessary. Although the filter membrane replacement process is simple, the complex installation structure adds extra workload for operators. Therefore, improvements to the existing screw compressor filter membrane installation structure are needed. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned technical problems by providing a filter membrane mounting structure for a screw compressor. This filter membrane mounting structure is easy to assemble and disassemble quickly, has a simple structure, relies entirely on mechanical structure, and is reliable in installation.

[0005] In view of this, the present invention provides a filter membrane mounting structure for a screw compressor, comprising:

[0006] The screw compressor body has an air inlet.

[0007] The fixed ring seat is located on the side wall of the screw compressor body and at the air inlet. The inner ring of the fixed ring seat can position the filter membrane. The inner wall of the fixed ring seat is provided with a connecting groove that penetrates the end face of the fixed ring seat. The inner wall of the fixed ring seat is provided with an arc-shaped groove. One side of the arc-shaped groove is connected to the connecting groove, and the other side of the arc-shaped groove smoothly transitions to the inner wall of the fixed ring seat. A retaining groove is provided on the arc-shaped surface of the arc-shaped groove.

[0008] The mounting ring can enter the inner ring of the fixed ring seat. The mounting ring is equipped with a locking block, which slides radially on the mounting ring. The locking block can enter the connecting groove and the locking slot. When the locking block is on the arc surface of the arc groove, the mounting ring abuts against the filter membrane.

[0009] The elastic element is positioned between the mounting ring and the locking block. When the locking block is located on the arc-shaped surface of the arc-shaped groove, the elastic element is compressed.

[0010] Quick-release mechanism: This mechanism allows the card to be ejected from the slot.

[0011] In this technical solution, when installing the filter membrane, first place the filter membrane into the inner ring of the fixing ring seat and position it. Then, place the mounting ring into the inner ring of the fixing ring seat. During this process, the locking block enters the connecting groove. Next, rotate the mounting ring to move the locking block on the arc surface of the arc groove. During this process, the elastic element is squeezed. When the locking block moves to the position opposite to the slot, the elastic force of the elastic element pushes the locking block into the slot, thereby locking the mounting ring at the current angle position. At this time, the mounting ring is also fixed in the inner ring of the fixing ring seat, and the mounting ring presses the filter membrane tightly in the inner ring of the fixing ring seat, completing the installation of the filter membrane. When it is necessary to remove the filter membrane, use the quick-release piece to remove the locking block from the slot. Then, rotate the mounting ring to return the locking block to the connecting groove, and the mounting ring can be removed from the inner ring of the fixing ring seat. Then, remove the filter membrane to complete the removal of the filter membrane.

[0012] In the above technical solution, there are multiple arc-shaped grooves, which are arranged in a circumferential array on the inner wall of the fixed ring seat. Each arc-shaped groove corresponds to a connecting groove, and multiple locking blocks and elastic elements are provided on the mounting ring corresponding to the multiple arc-shaped grooves.

[0013] In the above technical solution, furthermore, the card slot is only provided on the arc-shaped surface of an arc-shaped groove.

[0014] In the above technical solution, the bottom surface of the slot is provided with a through hole, which penetrates the outer wall of the fixing ring seat, and the quick release part is a rod that can pass through the through hole and enter the slot.

[0015] In the above technical solution, the bottom surface of the slot is provided with a threaded through hole, which penetrates the outer wall of the fixing ring seat. The quick-release part is a screw that can be threadedly engaged with the threaded through hole and can enter the slot.

[0016] In the above technical solution, a positioning block is further provided on the side wall of the filter membrane, and a positioning groove adapted to the positioning block is provided on the inner wall of the fixing ring seat.

[0017] In the above technical solution, a mounting groove is further provided on the end face of the mounting ring, one end of the locking block is provided in the mounting groove, the elastic element is provided in the mounting groove, and an annular cover that can cover the mounting groove is provided on the mounting ring, and the annular cover is detachably connected to the mounting ring.

[0018] In the above technical solution, the ring-shaped cover and the mounting ring are further connected by threaded fasteners.

[0019] In the above technical solution, a handle is further provided at the end of the mounting ring away from the filter membrane, and the handle extends out of the fixing ring seat when the mounting ring abuts against the filter membrane.

[0020] The beneficial effects of this utility model are:

[0021] 1. Through the cooperation of fixed ring seat, connecting groove, arc groove, card slot, mounting ring, card block, elastic element and quick release part, the filter membrane can be quickly installed, fixed and quickly disassembled. No power drive is required, the structure is simple and reliable and the maintenance cost is reduced.

[0022] 2. The multiple arc-shaped grooves and circumferentially distributed locking blocks improve the stability of the installation of the mounting ring and the fixing ring seat, and make the filter membrane subjected to uniform stress, avoiding single-point stress concentration, and improving sealing and stability.

[0023] 3. By setting a slot in only one arc-shaped groove, the filter membrane can be removed by simply releasing one locking block, simplifying the disassembly operation.

[0024] 4. The detachable design of the mounting ring and ring cover facilitates the installation and maintenance of the locking blocks and elastic components, while the threaded fastener connection ensures structural stability.

[0025] 5. The handheld design makes it easy for operators to apply force without the need for tools, thus improving the efficiency of installing and removing the mounting ring. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the filter membrane installation state in this utility model.

[0028] Figure 2 This is a schematic diagram of the filter membrane in the disassembled state in this utility model.

[0029] Figure 3 This is a schematic diagram of the three-dimensional structure of the mounting ring in this utility model.

[0030] Figure 4 This is a schematic diagram showing the disassembled state of the mounting ring and the ring-shaped cover in this utility model.

[0031] Figure 5 for Figure 2 A magnified view of a portion of point A in the middle.

[0032] Figure 6 This is a schematic diagram of the fit between the mounting ring and the fixing ring seat in this utility model.

[0033] The markings in the diagram are as follows:

[0034] 1. Screw compressor body; 2. Air inlet; 3. Fixing ring seat; 301. Connecting groove; 302. Arc groove; 303. Slot; 304. Threaded through hole; 305. Positioning groove; 4. Mounting ring; 401. Mounting groove; 402. Ring cover; 5. Locking block; 6. Elastic element; 7. Quick release part; 8. Positioning block; 9. Hand-held part; L. Filter membrane; Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] In the description of this utility model, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0037] This utility model mainly improves the filter membrane L installation structure of the screw compressor, and does not involve any improvement to the function or structure of the screw compressor. Therefore, this utility model will not describe the specific structure and working principle of the screw compressor in detail.

[0038] Example 1

[0039] like Figures 1-6 As shown, this embodiment provides a filter membrane mounting structure for a screw compressor, including: a screw compressor body 1, a fixing ring seat 3, a mounting ring 4, an elastic element 6, and a quick-release element 7;

[0040] The screw compressor body 1 is provided with an air inlet 2, through which the screw compressor body 1 draws in outside air. Please refer to [link / reference]. Figure 2 In this embodiment, the cross-section of the air inlet 2 is circular;

[0041] Please see Figure 1 and Figure 2 The fixing ring seat 3 is disposed on the side wall of the screw compressor body 1 and located at the air inlet 2. The fixing ring seat 3 is a circular ring structure, and the inner ring of the fixing ring seat 3 is adapted to the diameter of the air inlet 2. The fixing ring seat 3 is fixed to the air inlet 2 of the screw compressor body 1 by welding or bolts to ensure the sealing and stability of the installation. The inner ring of the fixing ring seat 3 can position the filter membrane L. For example, please refer to [reference needed]. Figure 2 The inner ring of the fixed ring seat 3 has an annular boss with an inner diameter slightly smaller than that of the filter membrane L. The filter membrane L can abut against the annular boss, thereby restricting the filter membrane L from moving further toward the air inlet 2. A positioning block 8 is provided on the side wall of the filter membrane L. A positioning groove 305 that matches the positioning block 8 is provided on the inner wall of the fixed ring seat 3. When installing the filter membrane L, the positioning block 8 is aligned with the positioning groove 305 and pushed into the inner ring of the fixed ring seat 3, thereby reducing the difficulty of positioning the filter membrane L.

[0042] Please see Figure 5 The inner wall of the fixed ring seat 3 is provided with a connecting groove 301, which penetrates the end face of the fixed ring seat 3 away from the air inlet 2. The inner wall of the fixed ring seat 3 is also provided with an arc-shaped groove 302, which does not penetrate the end face of the fixed ring seat 3. The arc-shaped groove 302 has an arc-shaped surface located away from the axis of the fixed ring seat 3, and two sidewalls located axially on the fixed ring seat 3. The two sidewalls of the arc-shaped groove 302 perpendicular to the axial direction of the fixed ring seat 3 communicate with the connecting groove 301 and the inner wall of the fixed ring seat 3, respectively. Please refer to [link / reference]. Figure 6 One side of the arc-shaped groove 302 is connected to the connecting groove 301, and the other side of the arc-shaped groove 302 smoothly transitions to the inner wall of the fixed ring seat 3. A slot 303 is provided on the arc-shaped surface of the arc-shaped groove 302.

[0043] Please see Figure 6The mounting ring 4 is a circular ring structure. The mounting ring 4 can enter the inner ring of the fixed ring seat 3 and can rotate relative to the fixed ring seat 3. The mounting ring 4 is provided with a locking block 5. The locking block 5 is slidably disposed on the mounting ring 4 along the radial direction of the mounting ring 4. The mounting ring 4 can only enter the inner ring of the fixed ring seat 3 after one end of the locking block 5 is aligned with the radial groove. When the locking block 5 is on the arc surface of the arc groove 302, the mounting ring 4 abuts against the filter membrane L. The side wall of the arc groove 302 will restrict the locking block 5 from the mounting ring 4 and can enter the connecting groove 301 and the locking groove 303. During installation, the locking block 5 and the connecting groove are moved upward to prevent the mounting ring 4 from coming out of the inner ring of the fixed ring seat 3. When the locking block 5 enters the locking groove 303, the mounting ring 4 cannot rotate relative to the fixed ring seat 3.

[0044] The elastic element 6 is disposed between the mounting ring 4 and the locking block 5. When the locking block 5 is located on the arc surface of the arc groove 302, the elastic element 6 is compressed. For example, the elastic element 6 can compress a spring or an elastic block.

[0045] The quick-release component 7 is used during the disassembly of the filter membrane L. The quick-release component 7 can remove the locking block 5 from the locking groove 303. After the locking block 5 is removed from the locking groove 303, the mounting ring 4 can rotate relative to the fixed ring seat 3. Any structure in the prior art that can push the locking block 5 out of the locking groove 303 can be used as the quick-release component 7 in this embodiment.

[0046] In this embodiment, when the filter membrane L needs to be installed, the filter membrane L is first placed into the inner ring of the fixing ring seat 3 and positioned. Then, the mounting ring 4 is placed into the inner ring of the fixing ring seat 3. During this process, the locking block 5 enters the communicating groove 301. Then, the mounting ring 4 is rotated to move the locking block 5 on the arc surface of the arc groove 302. During this process, the elastic element 6 is squeezed. When the locking block 5 moves to the position opposite to the locking groove 303, the elastic force of the elastic element 6 pushes the locking block 5 into the locking groove 303, thereby locking the mounting ring 4 at the current angle position. At this time, the mounting ring 4 is also fixed in the inner ring of the fixing ring seat 3, and the mounting ring 4 presses the filter membrane L in the inner ring of the fixing ring seat 3, thus completing the installation of the filter membrane L. When the filter membrane L needs to be removed, the locking block 5 is removed from the locking groove 303 by the quick release part 7. At this time, the mounting ring 4 is rotated to make the locking block 5 return to the communicating groove 301, so that the mounting ring 4 can be removed from the inner ring of the fixing ring seat 3. Then the filter membrane L can be removed, thus completing the removal of the filter membrane L.

[0047] Example 2

[0048] This embodiment further optimizes the installation structure based on Embodiment 1;

[0049] Please see Figure 6In this embodiment, there are multiple arc-shaped grooves 302, which are arranged in a circumferential array on the inner wall of the fixing ring seat 3. Each arc-shaped groove 302 corresponds to a connecting groove 301. The mounting ring 4 is provided with multiple locking blocks 5 and elastic elements 6 corresponding to the multiple arc-shaped grooves 302. The attached figure shows two arc-shaped grooves 302 as an example. Of course, the number of arc-shaped grooves 302 can be more. The circumferential distribution of multiple arc-shaped grooves 302 and locking blocks 5 improves the stability of the installation of the mounting ring 4 and the fixing ring seat 3, and makes the filter membrane L subjected to uniform force, avoiding single-point stress concentration, and improving sealing and stability.

[0050] In this embodiment, a slot 303 can be provided only on the arc surface of an arc groove 302. This can restrict the rotation of the mounting ring 4 relative to the fixed ring seat 3, thus completing the stable installation of the filter membrane L, and also improve the efficiency of disassembling the filter membrane L. When disassembling the mounting ring 4, only one quick-release piece 7 needs to be operated.

[0051] Example 3

[0052] Based on Embodiment 1, this embodiment also discloses a first structure of the quick-release component 7;

[0053] Please see Figure 6 In this embodiment, the bottom surface of the slot 303 is provided with a through hole. The axis of the through hole is parallel to the direction in which the block 5 enters the slot 303. The through hole penetrates the outer wall of the fixing ring seat 3. The quick release part 7 is a rod that can pass through the through hole and enter the slot 303. The rod here is a rod-shaped structure that matches the diameter of the through hole, such as a pin structure. When disassembling and installing the ring 4, the rod is inserted through the through hole into the slot 303 to contact the block 5, and the rod is pushed towards the block 5 to push the block 5 out of the slot 303.

[0054] In this embodiment, the quick-release piece 7 can be separated from the through hole, so that the quick-release piece 7 can be inserted into the through hole to push the locking block 5 only when it is necessary to remove the mounting ring 4.

[0055] Example 4

[0056] Based on Embodiment 1, this embodiment also discloses a second structure for the quick-release component 7;

[0057] The difference from Embodiment 3 is that in this embodiment, the through hole is replaced by a threaded through hole 304. The threaded through hole 304 penetrates the outer wall of the fixing ring seat 3. The axis of the threaded through hole 304 is parallel to the direction in which the locking block 5 enters the locking groove 303. The quick release part 7 is a screw that can be threadedly engaged with the threaded through hole 304 and can enter the locking groove 303.

[0058] In this embodiment, the quick-release piece 7 can be installed in the threaded through hole 304. This eliminates the need to locate the quick-release piece 7 when disassembling the mounting ring 4. After rotating the quick-release piece 7 to push the locking block 5 out of the slot 303, the threaded engagement between the quick-release piece 7 and the threaded through hole 304 keeps the quick-release piece 7 in its current position. At this point, no operation is required on the quick-release piece 7; simply rotating the mounting ring 4 will move the locking block 5 back into the slot 301.

[0059] Example 5

[0060] Based on Embodiment 1, this embodiment also discloses a method for connecting the card block 5 and the mounting ring 4;

[0061] Please see Figure 4 In this embodiment, an installation groove 401 is provided on the end face of the mounting ring 4, one end of the locking block 5 is slidably connected in the installation groove 401, the elastic element 6 is provided in the installation groove 401, and an annular cover 402 that can cover the installation groove 401 is provided on the mounting ring 4. The annular cover 402 is detachably connected to the mounting ring 4.

[0062] For example, the annular cover 402 and the mounting ring 4 are connected by threaded fasteners. A threaded hole is provided on the end face of the mounting ring 4, and a through hole is provided on the annular cover 402. The through hole passes through the two opposite end faces of the annular cover 402. The end of the threaded fastener, such as a screw, passes through the through hole and is threadedly connected to the threaded hole, thereby fixing the annular cover 402 and the mounting ring 4.

[0063] Preferably, a countersunk hole is provided on the end face of the annular cover 402 away from the mounting ring 4 and coaxial with the through hole. Please refer to [link to relevant documentation]. Figure 3 With the ring cover 402 and the mounting ring 4 fixed in place, the threaded fasteners are completely hidden in the countersunk hole, which protects the threaded fasteners and ensures that the mounting ring 4 stably abuts against the filter membrane L.

[0064] Example 6

[0065] Based on Example 1, this embodiment further optimizes the structure of the mounting ring 4;

[0066] Please see Figure 2 In this embodiment, a handle 9 is provided at the end of the mounting ring 4 away from the filter membrane L. When the mounting ring 4 abuts against the filter membrane L, the handle 9 extends out of the fixing ring seat 3. The operator can apply force to the handle 9 by hand to rotate the mounting ring 4, which does not require the use of tools and improves the efficiency of mounting ring 4 assembly and disassembly.

[0067] The embodiments of the present invention have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A filter membrane mounting structure for a screw compressor, characterized in that, include: A screw compressor body (1) is provided with an air inlet (2); A fixed ring seat (3) is provided on the side wall of the screw compressor body (1) and located at the air inlet (2). The inner ring of the fixed ring seat (3) can position the filter membrane (L). A connecting groove (301) is provided on the inner wall of the fixed ring seat (3). The connecting groove (301) penetrates the end face of the fixed ring seat (3). An arc-shaped groove (302) is provided on the inner wall of the fixed ring seat (3). One side of the arc-shaped groove (302) is connected to the connecting groove (301), and the other side of the arc-shaped groove (302) smoothly transitions to the inner wall of the fixed ring seat (3). A slot (303) is provided on the arc-shaped surface of the arc-shaped groove (302). The mounting ring (4) can enter the inner ring of the fixed ring seat (3). The mounting ring (4) is provided with a locking block (5). The locking block (5) is slidably disposed on the mounting ring (4) along the radial direction of the mounting ring (4). The locking block (5) can enter the connecting groove (301) and the slot (303). When the locking block (5) is on the arc surface of the arc groove (302), the mounting ring (4) abuts against the filter membrane (L). An elastic element (6) is disposed between the mounting ring (4) and the locking block (5), and the elastic element (6) is squeezed when the locking block (5) is located on the arc surface of the arc groove (302); Quick-release component (7) that can eject the card block (5) from the card slot (303).

2. The filter membrane mounting structure of the screw compressor according to claim 1, characterized by: There are multiple arc-shaped grooves (302), and the multiple arc-shaped grooves (302) are arranged in a circumferential array on the inner wall of the fixed ring seat (3). Each arc-shaped groove (302) corresponds to a connecting groove (301). The mounting ring (4) is provided with multiple locking blocks (5) and elastic elements (6) corresponding to the multiple arc-shaped grooves (302).

3. The filter membrane mounting structure of the screw compressor according to claim 2, characterized in that: The slot (303) is provided only on the arc surface of one of the arc grooves (302).

4. The filter membrane mounting structure of the screw compressor according to claim 2 or 3, characterized in that: The bottom surface of the slot (303) is provided with a through hole, which penetrates the outer wall of the fixing ring seat (3). The quick release part (7) is a rod that can pass through the through hole and enter the slot (303).

5. The filter membrane mounting structure of the screw compressor according to claim 2 or 3, characterized in that: The bottom surface of the slot (303) is provided with a threaded through hole (304), which penetrates the outer wall of the fixing ring seat (3). The quick release part (7) is a screw that can be threadedly engaged with the threaded through hole (304) and can enter the slot (303).

6. The filter membrane mounting structure of the screw compressor according to claim 1, characterized in that: The filter membrane (L) has a positioning block (8) on its side wall, and the fixing ring seat (3) has a positioning groove (305) that matches the positioning block (8) on its inner wall.

7. The filter membrane mounting structure of the screw compressor according to claim 1, characterized in that: The mounting ring (4) has a mounting groove (401) on its end face. One end of the locking block (5) is located in the mounting groove (401). The elastic element (6) is located in the mounting groove (401). The mounting ring (4) has an annular cover (402) that can cover the mounting groove (401). The annular cover (402) is detachably connected to the mounting ring (4).

8. The filter membrane mounting structure of the screw compressor according to claim 7, characterized in that: The annular cover (402) and the mounting ring (4) are connected by threaded fasteners.

9. The filter membrane mounting structure of the screw compressor according to claim 1, characterized in that: The mounting ring (4) is provided with a handle (9) at the end away from the filter membrane (L). When the mounting ring (4) abuts against the filter membrane (L), the handle (9) extends out of the fixing ring seat (3).

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